US3781752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for controlling simultaneously a plurality of variable resistors
Assignee: Panasonic Holdings Corp
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Filing: 1972-09-15
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Granted: 1973-12-25
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Expires: 1992-09-15
Abstract
Abstract A display device for displaying the interrelation among the controlled resistances of a plurality of variable resistors is provided for a device for controlling simultaneously a plurality of variable resistors by a single operating or control shaft. The display device may clearly indicate the position of a point, for example, the lower end of the control shaft, which is displaced as the control shaft is shifted.
Inventors
- 👤 S Oka
- 👤 M Nishioka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:55
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/14
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
144 words
A device for simultaneously controlling a plurality of variable resistors comprising a. control means for simultaneously controlling with one operating or control shaft the rotary shafts of a plurality of variable resistors, b. a first pair of links whose one ends are rotatably fixed to said operating shaft, c. a pair of crossed links which are crossed each other at the centers thereof, pivoted rotatably at the centers thereof to a stationary member of said device, and have their one ends rotatably fixed to the other ends of said first pair of links and their other ends rotatably pivoted to one ends of a third pair of links respectively, d. said third pair of links having the other ends thereof rotatably pivoted to each other, and e. display means disposed at said pivoted joint between the other ends of said third pair of links.
Claim 2
Independent Claim
144 words
A device for simultaneously controlling a plurality of variable resistors comprising a. control means for simultaneously controlling with one operating or control shaft the rotary shafts of a plurality of variable resistors, b. a first pair of links whose one ends are rotatably fixed to said operating shaft, c. a pair of crossed links which are crossed each other at the centers thereof, pivoted rotatably at the centers thereof to a stationary member of said device, and have their one ends rotatably fixed to the other ends of said first pair of links and their other ends rotatably pivoted to one ends of a third pair of links respectively, d. said third pair of links having the other ends thereof rotatably pivoted to each other, and e. display means disposed at said pivoted joint between the other ends of said third pair of links.
Claim 3
Dependent Claim
34 words
A device as defined in claim 1 wherein said first pair of links are connected to the free end of said control shaft and to said second pair of links through universal joints respectively.
Claim 4
Dependent Claim
261 words
A device as defined in claim 1 wherein said control means comprises a. a casing having a top surface, side walls and an opened bottom, b. a pair of molded bearings fixed to said top surface of said casing in coAxial relation with a centered aperture formed through said top surface, said pair of molded bearings having an inner semispherical bearing surface, c. an operating shaft which extends through the center of a spherical member rotatably fitted into said pair of bearings and through said center aperture of said top surface, d. a plurality of variable resistors mounted on said outer side walls of said casing in such a manner that the rotary shafts thereof extend through said side walls into said casing, e. a plurality of resilient, bow-shaped and slotted yoke members each for interconnecting a pair of opposed rotary shafts of said variable resistors, said plurality of resilient bow-shaped slotted yoke members crossing one another in such a manner that they will not interfere the oscillations or rotations of the others, and f. the lower end of said operating shaft extending through all of said slots of said plurality of yoke members and pivoted to said one ends of said first pair of links so that when said operating shaft is shifted each of said plurality of yoke members may rotate about the axis of said pair of opposed rotary shafts of said variable resistor and cause said pair of opposed rotary shafts to rotate through an angle equal to the angle of rotation of said each yoke member.
Claim 5
Dependent Claim
38 words
A device as defined in claim 3 wherein said first pair of links are connected to said free end of said operating shaft and to said one ends of said second pair of links through universal joints respectively.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |