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Class Number: 334
Class Title: TUNERS
Subclass Subclass
Number Title
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 tunerr
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