Patents > Guidance, Tools, and Manuals >> Classification >>> Class Definition

Class Numbers & Titles   | Class Numbers Only   | USPC Index   | International   | HELP

You are viewing a Class definition.

CLASS 351,	OPTICS: EYE EXAMINING, VISION TESTING AND CORRECTING
Click here for a printable version of this file

SECTION I - CLASS DEFINITION

This class corresponds generally in subject matter to optometry, and includes eye examining and vision testing instruments. These instruments must include some optical structure or they must operate in conjunction with the optical or vision path of the eye. Included also are these instruments combined with eye exercising and/or training devices. Included also are certain accessories such as test charts and/or targets which may involve projection, illuminators and supports which are peculiar to these instruments. Included also are methods of operating or using these instruments and not generally classifiable.

Included also are spectacles and eyeglasses, which may include the frames or mountings, per se, or the frames or mountings with fitted opthalmic lenses. Included also are spectacles and eyeglasses combined with other structural elements when not otherwise classifiable, such as spectacles combined with holders for microphotographs, telescopes or face protecting masks.

Included also are perfecting features with these spectacles and eyeglasses such as antiglare or light absorption, rear view reflectors, decorations moisture prevention or absorption, and supports or holders. Included also are parts of spectacles and eyeglasses when not otherwise classifiable, such as temples, bridges, connectors, lens linings or rims, and nose pads or cushions.

Included also are opthalmic lenses or blanks, including the eye-contact type. Included also are perfecting features in these lenses such as with light filtering or with protecting layers. Included also are methods of making the spectacles and eyeglasses and the opthalmic lenses. Included also are lens repair devices.

SECTION II - LINES WITH OTHER CLASSES AND WITHIN THIS CLASS

A. EYE EXAMINING AND TESTING INSTRUMENTS CLASSIFIED ELSEWHERE

Eye testing instruments and such instruments combined with eye training devices are classified here as a residual home. Eye treatment appliances and methods intended to aid in the diagnosis of diseased eyes or during surgical operations of the eye are elsewhere. (See References to Other Classes, below.

B. SPECTACLE AND EYE GLASS MOUNTINGS COMBINED WITH OTHER STRUCTURE

This class provides for opthalmic lenses combined with the mountings or frames; and also provides residually for such mountings or frames, per se, even when the sole indicated use is to mount nonopthalmic lenses or other structure which may be nonoptical. Examples of such nonopthalmic lenses are in telescopes, microscopes, and general magnifiers; and examples of this other structure are eye shades and goggle components (such as cups, masks, or shields), artificial body members, and electrical hearing aids. However, when these nonopthalmic lenses or other structures are claimed either broadly or specifically with the mounting, classification is not here, but in the class providing for the particular lens or other structure. See References to Other Classes, below.

As between this class, Class 2, and Class 623 the claiming of opthalmic structure in such example terms as "opthalmic lens", "correcting lens" and "astigmatic lens" is sufficient for classification in this Class 351 regardless of any eye shielding or artificial body structure included. However, as between this Class 351, Class 381, and Class 359 the inclusion of opthalmic structure together with other structure, per se, classifiable in Class 381 and Class 359 is not sufficient to classify in this Class 351.

The term "lens" due to its wide use is not sufficient to control classification. The combination of the lens broadly claimed together with the spectacle- type frame is classifiable in this Class 351 regardless of the indicated use of the lens.

C. GOGGLES

Goggles, which may include frames similar to the opthalmic lens mountings as classified with spectacles, but which in addition, have some structure whose purpose is protection of the wearer from mechanical injury such as cups, masks, shields, or hoods are classified elsewhere (see References to Other Classes). When this goggle structure includes lenses or transparent elements with some optical limitation such as vision correcting or light intensity modifying opthalmic elements, curved, spherical or meniscus lenses, light filters or polarizing lenses, classification is with the spectacles in this Class 351. However the broad recitation of a lens or transparent element is not sufficient to include otherwise goggle structure in this Class 351.

Goggles with no optical limitations but formed as spectacle lens mountings, but omitting any body protection structure, are classified in this Class 351. Where both the optical and body protecting structure are claimed classification is with the spectacles in this Class 351.

D. LENSES

Single lenses or lens combinations are classified elsewhere, and are primarily used in the category of optical instruments such as cameras, binoculars, magnifiers, telescopes, microscopes and oculars, principally for the purpose of forming or projecting a real or virtual image or images. (See References to Other Classes, below.)

In contrast to the above lenses used in instruments the opthalmic lenses including contact lenses classified in this Class 351 act as vision correcting organs and are specially adapted for use in spectacles or eyeglasses for the purpose of producing a clear image in conjunction with the eye lens on the sensitive screen in the eye known as the retina. For example, if the eye is myopic (near-sightedness) a negative lens is necessary to produce a proper image on the retina, and if the eye is hyperopic (far-sightedness) a positive lens is added to bring the light rays into correct focus on the retina. If the eye is astigmatic a cylindrical lens is added. These opthalmic lenses are essentially useful with the eye lens for aiding and correcting any visual defects of the eye lens.

SECTION III - REFERENCES TO OTHER CLASSES

SEE OR SEARCH CLASS:

SECTION IV - GLOSSARY

ANISEIKONIA

The inequality in shape and size between the two ocular images seen in binocular vision.

ASTIGMATISM

Defect of vision caused by unequal curvature of the refracting surfaces of the eye.

BINOCULAR COORDINATION

Fusion of the sight responses of both eyes, or correct space perception.

BRACE ARM

A relatively long and slender temple supporting arm or arc substantially identical to the shape of the upper contour edge of a lens.

BRIDGE

The connecting part between the lens supporting members of spectacles or eyeglasses.

CATARACT CORRECTION LENS

A lens, usually with cylindrical correction, to optically compensate for diminution of vision or opacity of the lens of the eye.

CHARTS

A light reflecting or transmitting panel with symbols or pictures of varying size for testing the refraction of the eye.

CHROMATICITY TEST

Determination of the visual sensitivity or adaptation to color.

ELEMENT

Component part of an optical instrument unless otherwise indicated.

EYEGLASSES

Spectacles, pince-nez or other mountings with lenses to correct defects of vision of the human eye.

EYE CONTACT LENSES

Opthalmic lenses that fit over the cornea of the eye and which float on the tear of the eye or are held in place by the eyelids.

FRAME

Mechanical parts, not including lenses, which serve to surround or support or which serve to interconnect elements of the frame.

INTERPUPILLARY DISTANCE

The distance between the centers of rotation of a pair of human eyes.

LENS

Ophthalmic lens or transparent material in goggles unless otherwise indicated.

LENS REPAIR DEVICES

Structure embracing the broken portion of a lens by a metal or plastic strip so that the lens can be restored to the mounting.

LIGHT POLARIZING LENSES

Lenses comprising a polarizing element which reduces light losses due to reflection.

MOUNTING

A frame structure completely or partially surrounding a lens or utilizing a bridge and nose pads for supporting vision-aids in front of the eyes of a user. This term is broader than "frame", in that it includes the pince-nez type.

MULTIFOCAL LENSES

Fused or onepiece lenses having areas of different refracting powers, usually one area part being intended for distant vision and the other for close work.

MUSCULAR IMBALANCE

Abnormal eye muscle functioning, tending the eyes to cross or diverge.

OPTHALMIC LENSES

Lenses usually mounted in spectacle frames, in eyeglass mountings or in trial frames having cylindrical, spherical or prismatic power for testing or correcting visual deficiencies of the eye. These lenses cooperate with the refracting medium of the eye to form on the retina a clear image of the object viewed, or in strabismus to modify the imbalanced visual axis of the eye to make the eye gradually resume normal status to correctly superimpose deviated images. The lenses may be spherical (plus or minus) to correct for fairly simple defective near or far sightedness, or they may be cylindrical to correct for astigmatism, or they may be prismatic to correct for strabismus, or they may be any of these in combination. The magnification or minification power of these lenses serves primarily to produce clear images on the retina of an eye with poor vision rather than to produce any telescopic, microscopic or pictorial effects.

OPTICS, OPTICAL

The science of light and vision and the construction of optical instruments.

OPTICAL PATH

Imaginary lines passing on the principal and secondary axes from the center of the retina to the object viewed.

OPTOMETRY

The art of investigating vision defects such as refraction and ocular muscle function-defects and correcting or aiding them by optical means such as opthalmic lenses, prisms, muscle training and other optical measures.

PRISMATIC LENS

A light-deflecting medium which diverges or converges the lightrays entering the eyes.

RIM

A grooved-optical element made from metal or plastic material for framing lenses.

SPECTACLES

Instruments for aiding vision consisting of lenses and supports therefor.

STEREOSCOPIC VISION

The ability to perceive distance and the three dimensional properties of a viewed object.

TEMPLES

The parts of a spectacle which are secured to the end of lenses or the frame and maintain the glasses on the user"s head.

TRIAL FRAME

Adjustable lens holding frames for supporting lenses interchangeably during vision testing.

VISION CORRECTING

Remedying vision defects by means of sight correcting lenses, eye muscle training devices, etc.

SUBCLASSES

41	SPECTACLES AND EYEGLASSES
	This subclass is indented under the class definition.  Subject matter including an ophthalmic element or elements such as a spherical or cylindrical lens, a filter, polarizing element, or prism interposed in the path of vision of one or both eyes for correcting vision defects or abnormalities or protecting the eyes from undesired rays together with structure for positioning or supporting these elements from or on the head of the user in correct operative position. (1) Note. The lenses of this subclass give usually a particular ophthalmic result in cooperation with the eye as opposed to lens systems such as used in cameras, microscopes or telescopes which may operate independently and without producing a corrective reaction in the eye or its element. SEE OR SEARCH THIS CLASS, SUBCLASS: 227, for trial frames. SEE OR SEARCH CLASS: 2,  Apparel,   subclass 13 for spectacle attached shades, and subclasses 426+ for goggle-type spectacles. See the class definition for the line between spectacles as classified here and goggles as classified in Class 2. 359,  Optical: Systems and Elements,   subclass 465 for light polarizing devices as used in stereoscopic viewing, subclasses 466+ for stereoscopic viewers; subclasses 642+ for lenses as used in photography, binoculars and telescopes; subclasses 409+ for opera glass holders; subclass 481 for binocular loupes; subclass 816 for monocular loupes, and subclasses 350+ and 885+ for optical filters.

42	Lens repair devices
	This subclass is indented under subclass 41.  Subject matter limited to eyeglass repairing devices whereby a broken lens of a pair of eyeglasses may be temporarily repaired until a new lens is available, as for example a metal member or a transparent wafer strongly clamped onto or cemented to the broken lens parts. SEE OR SEARCH THIS CLASS, SUBCLASS: 177, and 178, for methods of making spectacle lenses and spectacles not otherwise classifiable.

43	Floating or underwater type
	This subclass is indented under subclass 41.  Subject matter wherein a light-weight float is removable attached to a spectacle frame for recovering glasses accidentally dropped into the water, or wherein the spectacles are especially adapted for underwater use as to enable the human eye to accommodate for distortionless viewing of objects under water. SEE OR SEARCH THIS CLASS, SUBCLASS: 62, for spectacles with moisture prevention as absorption. SEE OR SEARCH CLASS: 2,  Apparel,   subclasses 426+ , and particularly 428+ and 440+ for goggles which protect the eyes from the water.

44	With antiglare or shading
	This subclass is indented under subclass 41.  Subject matter including light absorbing lenses such as polarizing or colored lenses either framed or rimless, to shield the eyes of a wearer from the glare of the sun or from other undesirable or harmful light rays. (1) Note. For classification here the lenses need not have diopter characteristics, but only general light modifying characteristics such as light filtering, polarizing, or absorbing. See Class 359, subclasses 483+ for polarizers, subclasses 601+ for optical elements and systems for reducing glare and subclasses 885+ for optical filters. SEE OR SEARCH CLASS: 2,  Apparel,   subclasses 10 through 15for eye shades and subclasses 426+ for goggles. See Lines With Other Classes and Within This Class in the Class Definition of this class (351) for the line between the subject matter classified here and in subclasses 426+ of Class 2. 359,  Optical: Systems and Elements,   see (1) Note above.

45	Partially occluding the light-path area
	This subclass is indented under subclass 44.  Subject matter wherein antiglare spectacles are provided with lenses having combined a clear-glass section and a section or sections of different light absorption, the latter covering only a part of the field of sight, so that without imparting the general vision the eyes may be screened from an undesirable light source by a slight movement of the head. SEE OR SEARCH THIS CLASS, SUBCLASS: 49, for eye protection devices utilizing polarizing lenses.

46	Perforated opaque plates or shields
	This subclass is indented under subclass 44.  Subject matter wherein antiglare spectacles comprise semitransparent or opaque plates having adjustable or fixed perforations or slits therein. SEE OR SEARCH CLASS: 2,  Apparel,   subclass 433 for eye protecting goggles, which may include apertured opaque members, having no significant optical characteristics but being solely for providing mechanical eye protection.

47	Removable and/or adjustable filters or screens (e.g., clip-on type)
	This subclass is indented under subclass 44.  Subject matter including colored or other antiglare filter screens removably or adjustably connected with spectacle frames of various styles or sizes. (1) Note. The filters or shades may be rimmed or rimless and they may cover portions of the glasses only or the entire glasses. The filters or screens classified here are usually combined with the spectacles. Subclass 13 of Class 2 provides for eye shades, per se, which are attachable to spectacles. Semiopague or tinted transparancies which swing selectively between the shading and viewing position are classified in this subclasses 47+. SEE OR SEARCH CLASS: 2,  Apparel,   subclass 13 for spectacle attached shades. See also (1) Note above.

48	Spring biased
	This subclass is indented under subclass 47.  Subject matter wherein the filters or screens are securely mounted on or readily attached to spectacles by integral or bridge-type spring means which hold the light absorbing mediums in different operative positions desired by the wearer. (1) Note. See (1) Note under subclass 47 above.

49	Polarizing
	This subclass is indented under subclass 44.  Subject matter wherein variable density lenses or viewing screens comprise fixed or adjustable superimposed light polarizing bodies which may be adjusted to filter any amount of light from a predetermined maximum to a predetermined minimum. (1) Note. The above noted lenses with light polarizing characteristics may be rotatably mounted in one frame of the general shape of a conventional spectacle frame, or may be in a submounting held detachably adjacent and overlying lenses fixed in an ordinary spectacle frame. SEE OR SEARCH CLASS: 359,  Optical: Systems and Elements,   subclass 465 for polarizing devices used in viewing stereoscopic pictures; and subclasses 483+ for polarizing devices generally.

50	With rear-view reflectors
	This subclass is indented under subclass 41.  Subject matter including one or more mirrors together with structure for supporting or attaching the mirror or mirrors on a part of the spectacle to provide rear vision for the spectacle wearer. (1) Note. For classification here the spectacle must be claimed broadly or specifically with the mirror. For mirrors which are adapted for use with spectacles as by being supported thereon, or attached thereto, no spectacle structure being positively claimed, see Class 248, subclasses 466+. SEE OR SEARCH CLASS: 2,  Apparel,   subclasses 426+ , and particularly 438 for goggles which may include rear vision mirrors. 248,  Supports,   subclasses 466+ for mirrors generally with supports.

51	With decoration or ornamentation
	This subclass is indented under subclass 41.  Subject matter wherein a spectacle frame or its ophthalmic lens is ornamented with decorative attachments or inserts. (1) Note. The above noted ornamental attachments may be colored stripes, decorated plates, pendant jewels or imitations thereof, and may be placed on any selected portion of the spectacle frame or lens. SEE OR SEARCH THIS CLASS, SUBCLASS: 105, for brace arm mountings with detachable brace arm. SEE OR SEARCH CLASS: 63,  Jewelry,   subclasses 1.1 and 2, for combination articles and various jewelry articles. 428,  Stock Material or Miscellaneous Articles,   subclasses 3 through 32for miscellaneous ornamented articles and subclass 67 for a element embedded in a substrate (e.g., spectacle frame) and visible.

52	Detachably secured
	This subclass is indented under subclass 51.  Subject matter wherein the decorative devices are so attached to the various frame or lens parts as to be readily removable therefrom.

53	Shooting type
	This subclass is indented under subclass 41.  Subject matter is limited to spectacles peculiarly adapted for the aiming of firearms. (1) Note. Included here are "shooting" spectacles having screens with slots or diaphragms, discs with rotatably and movably arranged openings, adjustable aiming lenses or stenopaic disc apertures.

54	Invertible or reversible multifocal type
	This subclass is indented under subclass 41.  Subject matter wherein spectacles with multifocal lenses may be inverted or turned upside down as a unit, or in which the lenses, per se, may be revolved inside the frame so that bifocal segments may stand at the top or bottom of the lenses. SEE OR SEARCH THIS CLASS, SUBCLASS: 115, for reversible or axially rotatable temples.

55	With vertical adjustment of multifocal lenses
	This subclass is indented under subclass 41.  Subject matter wherein the mounting is adjustable to permit vertical movement of multifocal lenses to selectively position the near and distance vision portions in the line of vision. (1) Note. The adjustment of the lenses may be made by changing the position of the nose pads on their supporting arms or by varying the distance between the pads by moving rotatable portions of the bridge to adjusted positions. SEE OR SEARCH THIS CLASS, SUBCLASS: 54, for spectacles whose lenses are inverted by rotation. 107, for adjustable brace or mountings. 137, for adjustable nose pads or cushions. 148, for adjusting or slidable connectors.

56	Lorgnette type
	This subclass is indented under subclass 41.  Subject matter including an elongated handle attached to the frame for holding the glasses in the viewing position, the handle constituting the sole support for the glasses in this viewing position. (1) Note. The eyeglasses of this type are usually folding. SEE OR SEARCH THIS CLASS, SUBCLASS: 63+, for foldable spectacles and eyeglasses. 155+, for eyeglass supports or holders.

57	With auxiliary lenses movable in and out of the optical path (e.g., clip-on type attachments)
	This subclass is indented under subclass 41.  Subject matter wherein supplemental lenses or glasses without temples are movably attached to permanent reading or farsight main spectacles. (1) Note. The above noted supplemental glasses may comprise U-shape or half moon lenses below eye level. They may be pivotable or magnetically attached to normal spectacles. The subject matter does not include supplemental glasses attached to frames without permanent lenses. See subclass 59 for this subject matter. The lenses may be plain glass as for protecting purposes. SEE OR SEARCH THIS CLASS, SUBCLASS: 44+, for eyeglasses and spectacles with antiglare or shading structure. 61, for spectacles with U-shape or half-moon lenses below eye level. SEE OR SEARCH CLASS: 359,  Optical: Systems and Elements,   subclass 481 for binocular loupes and subclass 816 for monocular loupes.

58	Spring biased or secured by friction members
	This subclass is indented under subclass 57.  Subject matter wherein the supplemental lenses or glasses are retained on the main eyeglasses by spring loaded clamping members or by circumferentially secured friction clips. SEE OR SEARCH THIS CLASS, SUBCLASS: 47+, for clip-on antiglare or shading spectacles.

59	Lens pivots in and out of optical path
	This subclass is indented under subclass 41.  Subject matter wherein mounted or rimless lenses are movably connected to glassless spectacle frames or glassless support rods to swing from an operative position in the line of vision to an inoperative position above the eyes. SEE OR SEARCH THIS CLASS, SUBCLASS: 57+, for spectacles including lenses with additional lenses which pivot in and out of the optical path. 60, for spectacles whose lenses are mounted on or suspended from rods or bars, and which may be adjusted along the rod or bar.

60	With lens suspension bar (e.g., torsion bar)
	This subclass is indented under subclass 41.  Subject matter wherein rimless or rimmed lenses are suspended from or mounted on a usually rectilinear rod, or are suspended from or mounted on oppositely extending bars embodying nose engaging means. (1) Note. The lenses in the above structure may be adjustable in various spaced relations to each other. The points of connection of the lenses and temples with the bar or rod are generally outside of the range of vision. SEE OR SEARCH THIS CLASS, SUBCLASS: 57+, for spectacles with auxiliary lenses movable in and out of the optical path. 107, for brace-arm-type mountings with adjustable lenses. 133+, for bridges with connectors or straps.

61	U-shape or half-moon lens below eye level
	This subclass is indented under subclass 41.  Subject matter having lenses of narrow vertical dimension which lie well below the horizontal line of vision and provide unobstructed vision over the top of the lenses. (1) Note. This subject matter is distinct from and does not include eyeglasses with conventional full size area or multifocal lenses. The lenses here are of approximately one-half or one-third normal lens area and are without lenses at the top. SEE OR SEARCH THIS CLASS, SUBCLASS: 168+, for multifocal lenses generally.

62	With moisture prevention or absorption
	This subclass is indented under subclass 41.  Subject matter wherein lens retaining rims are provided with moisture reducing and air-ventilating openings, or wherein a sweat or moisture absorbing cushion is mounted between the lens rims. SEE OR SEARCH THIS CLASS, SUBCLASS: 43, for floating or underwater spectacles. 154, for lens linings or rims.

63	Folding
	This subclass is indented under subclass 41.  Subject matter in which the frame of the spectacles (usually in the central part of the bridge or temple) may be folded or otherwise adjusted so that portions of the frame, usually the lens portions are superposed to lie one upon the other, but which are in the same plane and alignment when unfolded and opened for use. (1) Note. The temples in the above folding spectacles may each consist of two pivotally connected folding portions, or may be made of one short piece generally not longer than the spaced lens rims. However, spectacles where the temples fold on their hinges to lie along the remaining frame structure is not provided for here but in the particular mounting subclasses below.

64	Pince-nez type
	This subclass is indented under subclass 63.  Subject matter limited to folding eyeglasses of the pince-nez-type. SEE OR SEARCH THIS CLASS, SUBCLASS: 65+, for pince-nez-type glasses generally.

65	Pince-nez type (including pince-nez bridges, nose grips and nose pads therefor)
	This subclass is indented under subclass 41.  Subject matter limited to eyeglasses which are provided with nose gripping means for supporting the lenses before the user"s eyes. (1) Note. The subject matter here is distinct from and does not include eyeglasses where the support is by temples bearing upon the ears or sides of the user"s head. See the indented subclass 66 for pince-nez-type glasses with a temple. (2) Note. This and the indented subclasses provide for bridges, nose grips, and nose pads which are intended for use with pince-nez eyeglasses as indicted for example by the pince-nez background of the patent. SEE OR SEARCH THIS CLASS, SUBCLASS: 64, for folding pince-nez-type glasses. 124+, for bridges generlly, subclasses 131 and 132 for bridges with nose grips or guards; and subclass 132 for bridges with nose pads or cushions. 136+, for nose pads or cushions generally.

66	With ear chain or temple
	This subclass is indented under subclass 65.  Subject matter wherein a temple or a chain with a hook is attached to the lens or rim, as for steadying the pince-nez in position or for preventing the glasses from falling. SEE OR SEARCH THIS CLASS, SUBCLASS: 111+, for temples generally. 155+, for spectacles generally with supports or holders.

67	Plural bridges
	This subclass is indented under subclass 65.  Subject matter wherein rimless or rimmed lenses are connected by a bridge (usually spring) and by a supplemental bridge. (1) Note. The subject matter here may provide proper adjustment of the tension of the spring bridge, may serve for setting the lenses at the correct pupillary distance, or may be used for shifting the lenses in a vertical plane. SEE OR SEARCH THIS CLASS, SUBCLASS: 68, for a pince-nez having a resiliently extensible bridge. 124+, for bridges generally. 227, for bridges in trial frames.

68	With resilient extensible bridge
	This subclass is indented under subclass 65.  Subject matter wherein the lenses are connected by a bridge which may be extended in length against the biasing action of a spring as where the bridge comprises two arms sliding one beside or within the other together with an expandable spiral spring around the arms to force the lenses nearer together and the nose grips into contact with each side of the nose. (1) Note. The bridge may extend tangentially along the top edges, behind, or in the plane of the lenses. SEE OR SEARCH THIS CLASS, SUBCLASS: 65, for pince-nez eyeglasses with flexible bridges or bow springs as where the bridge itself is made from flexible material.

69	Lens and nose grip movable on flexible bridge
	This subclass is indented under subclass 65.  Subject matter including a resilient bridge or a bridge having resilient portions, the lenses being capable of swinging movement so that a separating motion of the nose grips is produced. (1) Note. The above noted spring-bridges may have loops arranged in front or in the rear of the lens planes whereby the elasticity of the bridge material produces pressure on the nose grip to retain the glasses in position. SEE OR SEARCH THIS CLASS, SUBCLASS: 126+, for flexible bridges generally.

70	Posts or studs connecting bridge and nose grip
	This subclass is indented under subclass 65.  Devices wherein the bridge or bow spring, the lens connectors or holders, and the nose guards have a common junction, as by being interconnected within a box by a screw or pin. (1) Note. In the embodiment here a fastener or locking device may be inserted or forced into the stud-box to prevent loosening or displacement of the frame members. SEE OR SEARCH THIS CLASS, SUBCLASS: 140+, for connectors generally.

71	With spring biased nose grips
	This subclass is indented under subclass 65.  Subject matter wherein the nose grips or guards are formed of resilient material or are combined with a spring to bias the guards with respect to the bridge to properly engage the nose and retain the glasses thereon. (1) Note. In the modification here the guards may be actuated by flexible portions in the bow springs, by coil springs interposed between lens mountings and the nose-engaging member, or by moving the lenses forwardly against the resiliency of a bridge portion. However, for classification in this subclass the nose guards must be biased with respect to at least a portion of the bridge which remains rigid. A mere bridge of resilient material and flexible over its length is not provided for here but in the generic subclass 65 above. SEE OR SEARCH THIS CLASS, SUBCLASS: 88, for continuous rim mountings with adjustable nose guards.

72	With pivoting levers
	This subclass is indented under subclass 71.  Subject matter wherein the nose grips include two finger-engaging lever portions, both being biased as by helical or leaf springs. SEE OR SEARCH CLASS: 267,  Spring Devices,   for spring structures generally.

73	With flat spiral springs
	This subclass is indented under subclass 72.  Devices wherein the grips are supported and/or biased by a strip of flat spiral or leaf-type spring.

74	With springs below bridge
	This subclass is indented under subclass 72.  Devices wherein pivoting nose grips are activated by springs mounted on the under side of the bridge.

75	With springs encased
	This subclass is indented under subclass 72.  Devices wherein the nose grips are actuated by springs which are retained and covered by a hollow cup or barrel. (1) Note. In the modification here the pivot and spring that actuate the guard lever may be mounted and contained within a recess cut away from a portion of the lens rim.

76	With adjustable or rockable nose grips or pads
	This subclass is indented under subclass 65.  Subject matter wherein the nose grips or pads can be adjusted on their supports in one or more directions so as to fit any shape of nose. (1) Note. The subclass provides for adjustable nose grips or pads intended for use with pince-nez eyeglasses as indicated for example by the general pince-nez background in the patent. The above nose grips or pads are usually adjustable laterlly and longitudinally and may be secured in the selected position. The modification here includes also nose grips or pads which are rockably connected to the support, or which are made from bendable or flexible material. SEE OR SEARCH THIS CLASS, SUBCLASS: 71, for pince-nez eyeglasses with spring- biased nose guards, whose spring permits adjustment. 88, for adjustable nose guards incontinuous rim type lens mountings. 137, for adjustable or rockable nose pads or cushions generally.

77	With ball joints
	This subclass is indented under subclass 76.  Subject matter wherein the nose grips or pads are connected with the pince-nez bridge or spring by ball-and-socket joints to cause the grips or pads to assume the proper and most suitable position relative to the nose. SEE OR SEARCH THIS CLASS, SUBCLASS: 140+, for spectacle and eyeglass connectors generally.

78	Nose pads or cushions
	This subclass is indented under subclass 65.  Subject matter wherein resilient, soft or padded elements are attached to the metallic nose grips or guards which wear on the nose of a wearer to support pince-nez- type eyeglasses.