Class 334: TUNERS ( Manual of U.S. Patent Classification )

U.S. PATENT AND TRADEMARK OFFICE
Information Products Division

[Manual of Classification, Class Listing]

Manual of U.S. Patent Classification
as of June 30, 2000

Class
334
TUNERS

Class definitions may be accessed by clicking on the class title, above.
Subclass definitions may be accessed by clicking on the subclass number, below.

Patents classified in a subclass may be accessed by clicking on the " [Patents]

" icon following the subclass number, below.

( please note that links to definitions and classified patents may not be available for some classes and subclasses )

For search strategies, please refer to the Classification Index Explanation of Data web page.

Simple Text Search Across All U.S. Patent Classes in the Manual of Classification (requires a JAVA-enabled web browser)

--------------------------------------------------------------

Subclass		Title
ClassTitle		===> TUNERS

1		COMBINED DIVERSE-TYPE TUNERS
2		. With plural diverse disk or plural diverse cylinder-type turret tuners
3		. With mutual tuning element
4		MAGNETIC FIELD-RESPONSIVE TUNER
5		CONDITION-RESPONSIVE (E.G., TEMPERATURE COMPENSATION)
6		. With condition-responsive inductor or capacitor
7		PUSH BUTTON AND/OR LEVER-TYPE MECHANICALLY OPERATED TUNER
8		REMOTELY CONTROLLED TUNER
9		. With electromagnetic operator
10		. . Solenoid or relay operator
11		TUNER UNIT DIRECTLY RESPONSIVE TO VOLTAGE AND/OR CURRENT VARIATION
12		. Saturable core-type inductor
13		. . Automatic frequency-centering circuit
14		. Reactance tuning
15		. . Semiconductor reactance circuit
16		. . Automatic frequency-centering circuit
17		TUNER UNIT WITH ELECTROMAGNETIC OPERATOR
18		. Band scanning or selector circuit
19		. . Solenoid or relay-operated tuner means
20		. . Motor-operated
21		. . . Predetermined frequency selector
22		. . . With reversing means
23		. . . Clutch means
24		. . . Relay-controlled
25		. . . . Plural relays
26		. Automatic frequency-centering circuit
27		. . Tool-driven aligning apparatus
28		. . Plural signal sources
29		. Predetermined center frequency selector (e.g., push-button control)
30		WITH RESONANCE INDICATOR
31		. Meter type
32		. . With optical and/or shading device
33		. Cathode ray type
34		. . Magic eye
35		. . . Plural shadows
36		. Lamp type
37		. . Glow discharge
38		WITH REACTOR ELEMENT WINDING AND UNWINDING COMBINED
39		COMBINED
40		SENSITIVITY OR "Q" ADJUSTMENT MEANS IN TUNED CIRCUITRY
41		WITH RESONANT LINE ELEMENTS
42		. Plural-operated tuning units
43		. . With shaft operator
44		. Deformable
45		. With lumped capacitor in tuned circuit
46		WITH COMPRESSIBLE OR DEFORMABLE-TYPE TUNER
47		WITH SWITCHING MEANS
48		. Tuner switch rockable for fine tuning
49		. Disk-type turret tuner
50		. Drum or cylinder-type turret tuner
51		. . With vernier tuning means
52		. Switch operated by variable tuning means
53		. . Rectilinearly operated switch
54		. Rectilinearly operated switch
55		. Capacitor only modified or substituted by switching
56		. Inductor only modified or substituted by switching
57		. . With vernier tuning means
58		. . . Variable capacitor
59		. Tuned transformer circuit substituted by switching
60		. . Tuned circuit shorted by switch
61		MUTUAL INDUCTANCE VARIABLE MEANS
62		. Variometer
63		. Plural coils having common adjustable core
64		SERIES TUNED CIRCUIT
65		INDUCTOR AND CAPACITOR BOTH VARIABLE
66		. With variable inductor and capacitor structure in common
67		. . Butterfly-type tuner
68		. . Rectilinearly movable reactance adjusting elements
69		. Inductor and capacitor simultaneously varied
70		. . Core tuned inductor
71		VARIABLE INDUCTOR TUNED
72		. Movable contact adjustable over length of inductor
73		. . With capacitor-type contact
74		. Adjustable core type
75		. . With inductor wound in particular shape
76		. . With particular shape and/or type of core
77		. . Gang-operated
78		VARIABLE CAPACITOR TUNED
79		. Straight-line frequency type
80		. With variable spacing between plates
81		. Rectilinearly sliding plates
82		. With particular shape and/or arrangement of plates
83		. Gang-operated capacitors
84		. Capacitor drive means
85		WITH SHIELDING OR HOUSING MEANS
86		WITH INDICATOR
87		. Band-switching
88		WITH STOP OR POSITIONING MEANS (E.G., DETENTS)
89		MISCELLANEOUS

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

Manual of U.S. Patent Classification as of June 30, 2000

Class 334 TUNERS

Manual of U.S. Patent Classification
as of June 30, 2000

Class
334
TUNERS