Patent US3916368A successfully refreshed from Google Patents.
US3916368A
Expired / Lapsed
US
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Positive motion fader device
Assignee: Robins Industries Corp
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Filing: 1974-08-26
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Granted: 1975-10-28
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Expires: 1994-08-26
Abstract
Abstract Two potentiometers having rotary output shafts are mounted on a support. Each of the output shafts has a substantially cylindrical wheel mounted on it for rotation with the output shaft. The axis of rotation extend in parallelism and are located in a common plane. A first flexible steel strip extends at one side of this plane and has its opposite end portions convoluted in clockwise direction about the one and in counterclockwise direction about the other wheel, the ends of the strip being connected to these wheels. A second similar strip is located at the other side of the plane and has its opposite end portions convoluted in counterclockwise direction about the one and in clockwise direction about the other wheel, also having its ends connected to the wheels. A slider is connected with one of the strips and is guided in a slot so that, when it is shifted along the slot, it causes linear displacement of the flexible strip elements and equal but opposite rotary movement of the wheels and hence of the output shafts of the potentiometers.
Inventors
- 👤 Herman D Post
- 👤 Sr George Alexandrovich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:25
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/14; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19023; Y10T74/19074; Y10T74/19079; Y10T74/19102
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
185 words
A fader device a fader for simultaneously varying the strength of two separate electrical signals, comprising a support; a pair of rotary potentiometer elements mounted on said support for rotary motion about spaced parallel axes; a pair of flexible strip elements, including a first flexible strip element extending between said rotary elements at one side of an axial plane encompassing both of said axes, and having one of its end portions trained clockwise about the periphery of one and the other of itS end portions trained counterclockwise about the periphery of the other of said rotary elements, and a second flexible strip element extending between said rotary elements at an opposite side of said axial plane and having one of its end portions trained counterclockwise about the periphery of said one and the other of its end portions trained clockwise about the periphery of said other rotary element; connecting means connecting the ends of said flexible strip elements to the respective peripheries; and operating means connected with one of said elements for imparting motion to the same and thereby to all of the other elements.
Claim 2
Dependent Claim
185 words
A fader device a fader for simultaneously varying the strength of two separate electrical signals, comprising a support; a pair of rotary potentiometer elements mounted on said support for rotary motion about spaced parallel axes; a pair of flexible strip elements, including a first flexible strip element extending between said rotary elements at one side of an axial plane encompassing both of said axes, and having one of its end portions trained clockwise about the periphery of one and the other of itS end portions trained counterclockwise about the periphery of the other of said rotary elements, and a second flexible strip element extending between said rotary elements at an opposite side of said axial plane and having one of its end portions trained counterclockwise about the periphery of said one and the other of its end portions trained clockwise about the periphery of said other rotary element; connecting means connecting the ends of said flexible strip elements to the respective peripheries; and operating means connected with one of said elements for imparting motion to the same and thereby to all of the other elements.
Claim 3
Dependent Claim
42 words
A device as defined in claim 1, wherein said operating means comprises an operating member connected with one of said strip elements for imparting to the same a linear motion which becomes converted into equal uni-directional rotary motions of said rotary elements.
Claim 4
Dependent Claim
56 words
A device as defined in claim 2, wherein said support has a wall formed with a slot extending longitudinally of said one strip element intermediate said rotary elements; and wherein said operating member is fixedly connected with said one strip element and includes an engaging portion extending through said slot and movable lengthwise of the same.
Claim 5
Dependent Claim
16 words
A device as defined in claim 2, wherein said strip members are strips of spring steel.
Claim 6
Dependent Claim
13 words
A device as defined in claim 2, wherein said connecting means comprises screws.
Claim 7
Dependent Claim
41 words
A device as defined in claim 2, wherein each of said elements comprises a potentiometer stationarily mounted on said support and having a rotary output shaft, and a wheel mounted on and rotatable with said output shaft and having said periphery.
Claim 8
Dependent Claim
15 words
A device as defined in claim 6, wherein said wheels are of synthetic plastic material.
Claim 9
Dependent Claim
13 words
A device as defined in claim 6, wherein said wheels are substantially cylindrical.
References Cited (Backward Citations)
US1783542A
Cited
US2860215A
Cited
US3185949A
Cited
US3266326A
Cited
US3390366A
Cited
US3568113A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |