U.S. PATENT AND TRADEMARK OFFICE
Information Products Division |
U.S. Patent Classification System - Classification Definitions
as of June 30, 2000
Patents classified in a subclass may be accessed by either clicking on
the subclass number
preceding each subclass definition or on the
" " icon, below.
( please note that patents for some subclasses may not be available )
For classification search strategies, please refer to the
Classification Index
Explanation of Data web page.
(definitions have been obtained from the
Patents ASSIST CD-ROM which
is produced by the U.S. Patent and Trademark Office
Electronic Products Branch)
Class 289
KNOTS AND KNOT TYING
Class Definition:
This class includes a method or an apparatus for intertwining
one or more portions of a cord, strand or strip, while
simultaneously maintaining the lay of the constituents, to
form a knot, and the product of such method or apparatus.
LINES WITH OTHER CLASSES AND WITHIN THIS CLASS
Tools of the nature of pliers, tweezers, crochet-hooks, etc.,
capable of other uses, but which may be employed to form
knots if desired, are otherwise classified. Pliers are found
in Class 81, Tools, subclasses 300+; tweezers in Class 294,
Handling: Hand and Hoist-line Implements, subclass 99.2;
crochet-hooks in Class 66, Textiles: Knitting, subclass 118.
REFERENCES TO OTHER CLASSES
SEE OR SEARCH CLASS:
28, Textiles: Manufacturing, subclass 211 for knotters in
combination with warp preparing apparatus.
56, Harvesters, subclasses 67+, 131+ and 433+.
57, Textiles: Spinning, Twisting, and Twining, subclasses
22+ for means for uniting portions of rope or cable where
the unlaying of the strands is involved.
66, Textiles: Knitting, subclass 118 for crocket-hooks, and
see (1) Note, supra.
81, Tools, subclasses 300+ for pliers, and see (1) Note,
supra.
87, Textiles: Braiding, Netting, and Lace Making, subclass
12 for processes of and subclass 53 for apparatus for making
knotted mesh fabrics.
100, Presses, subclasses 33+ for binder applying apparatus,
not otherwise provided for, which include means for joining
spaced portions of a material encircling tensioned binder,
some of said means involving twisting of the spaced portions
and subclasses 2+ for corresponding methods.
112, Sewing, subclass 22 and 156.
140, Wireworking, subclasses 3+ and 111+ for means
peculiarly adapted for uniting portions of wire or the like
wherein the portions are held together only by reason of the
rigidity of the material.
242, Winding, Tensioning, or Guiding, subclass 475.1 for
means for uniting a reserve thread with the last end of the
bobbin thread of a winding machine.
294, Handling: Hand and Hoist-line Implements, subclass 99.2
for tweezers, and see (1) Note, supra.
493, Manufacturing Container or Tube From Paper; or Other
Manufacturing From a Sheet or Web, subclasses 379+.
SUBCLASSES
Subclass:
1.2
An interlacement of portions of one or more elongated
flexible elements (e.g., strand, rope) forming a tie or
fastening and including any bend or hitch.
Subclass:
1.5
This subclass is indented under the class definition.
Methods.
Subclass:
2
Devices for forming a loop through which a portion of the
cord is passed and the loop tightened thereon.
SEE OR SEARCH THIS CLASS, SUBCLASS:
17 for a device adapted to assist the hand or operated by
hand to form a knot.
Subclass:
3
Whereby a knot is tied comprising two loops, the terminals of
one extending through the bight of the other on the same side
and one terminal of the second loop extending through the
bight of the first loop, the other terminal of the second
loop extending between the first terminal of the second loop
and the terminals of the first loop.
Subclass:
4
Whereby a knot is tied comprising two loops, with the
terminals of each extending through the same side of the
bight portion of the other.
Subclass:
5
Having a bill comprising two members adapted to receive and
hold a cord between them, said members extending laterally
from a rotating shank.
Subclass:
6
The bill is mounted on a frame, which is moved to-and-fro
while the knot is being tied.
Subclass:
7
One member of the bill moving rectilinearly toward or away
from the other to grasp or release the cord.
Subclass:
8
The bill member nearer the driving means being pivoted to
swing toward the same.
Subclass:
9
The knotter shank driven directly from a rotating shaft
disposed at an angle thereto.
Subclass:
10
Having a flat disk with notches in its periphery for holding
the cord ends.
Subclass:
11
Limited to the structure of a pair of cooperating members
projecting from a shank for forming the loop and pulling a
portion of cord therethrough. Does not include gearing for
operating the members. May include cam or spring for opening
or closing the jaw.
Subclass:
12
Having a sleeve, within which is a spindle, the spindle and
sleeve being relatively movable to form a loop, and a
twine-engaging member on the end of the spindle to pull a
portion of the cord through the loop. Sometimes called
"cylinder-knotter".
Subclass:
13
Improvement limited to means for holding the ends of the cord
while the knot is being tied. Includes cord-cutter when the
same is carried on the cord-holder, the rest of the knotter
being old.
Subclass:
14
Comprising a flat disk with peripheral notches to hold the
cord ends.
Subclass:
15
Limited to means for guiding the cord in proper relation to
the knot-tying member.
Subclass:
16
Limited to means for presenting the cord to the cord-holder
and attachments therefor. Includes knife, guard, or
compressor-arm if the same is carried by the needle.
Subclass:
16.5
MACRAME:
This subclass is indented under the class definition. Method
or apparatus for effecting or facilitating the knotting of
cords or similar strand materials into a coarse lace or a
decorative fringe.
Subclass:
17
Means peculiarly adapted to assist the hand or operated by
hand to form a knot.
SEE OR SEARCH CLASS:
57, Textiles: Spinning, Twisting, and Twining, subclass 23
for implement such as marlin spikes employed in splicing
operations.
Subclass:
18.1
MISCELLANEOUS:
Tying devices which do not fall within the definition of any
of the more specific subclasses in this class (289).
Information Products Division -- Contacts
Questions regarding this report should be directed to:
U.S. Patent and Trademark Office
Information Products Division
PK3- Suite 441
Washington, DC 20231
tel: (703) 306-2600
FAX: (703) 306-2737
email: oeip@uspto.gov
Last Modified: 6 October 2000