US3968467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Touch controlled voltage-divider device
Assignee: SPECTRA SYMBOL CORP A UT CORP
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Filing: 1974-11-01
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Granted: 1976-07-06
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Expires: 1994-11-01
Abstract
Abstract A voltage divider device capable of providing any voltage in a preselected range of voltages, which voltage may be set by a touch of the finger is disclosed. The device includes a control element without frictional contacts and a voltage storage circuit controlled by the control element. A circuit including the device is described and embodiments of the device providing a visual indication of the setting of the device are disclosed.
Inventors
- 👤 Stephen H. Lampen
- 👤 William E. Hearn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:29
CPC Classifications
H; H03; H03G; H03G3/00; H03G3/02; G; G01; G01R; G01R1/00; G01R1/28; H01; H01C; H01C10/00; Y; Y10; Y10S; Y10S323/00; Y10S323/904
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
166 words
In a voltage-divider device: a. a resistive member having an elongated resistive surface; b. a conductive member having an elongated conductive surface mounted in close spaced substantially coextensive relationship with said resistive surface; c. means for selectively establishing galvanic contact between each of a plurality of points along the length of said resistive surface and the point corresponding thereto along the length of said conductive surface by a touch of the finger; d. elongated voltage responsive visual indication means physically located along the length of said elongated resistive and conductive surfaces in close spaced substantially coextensive relationship therewith and adapted to produce a different visual indication in response to each of a plurality of different voltages corresponding to each of said plurality of points along the length of said resistive surface; e. terminal means for making electrical connection to opposite ends of said elongated resistive surface; and f. terminal means for making electrical connection from the conductive member to said elongated voltage responsive visual indication means.
Claim 2
Dependent Claim
166 words
In a voltage-divider device: a. a resistive member having an elongated resistive surface; b. a conductive member having an elongated conductive surface mounted in close spaced substantially coextensive relationship with said resistive surface; c. means for selectively establishing galvanic contact between each of a plurality of points along the length of said resistive surface and the point corresponding thereto along the length of said conductive surface by a touch of the finger; d. elongated voltage responsive visual indication means physically located along the length of said elongated resistive and conductive surfaces in close spaced substantially coextensive relationship therewith and adapted to produce a different visual indication in response to each of a plurality of different voltages corresponding to each of said plurality of points along the length of said resistive surface; e. terminal means for making electrical connection to opposite ends of said elongated resistive surface; and f. terminal means for making electrical connection from the conductive member to said elongated voltage responsive visual indication means.
Claim 3
Dependent Claim
50 words
In a voltage-divider device as claimed in claim 1 said elongated voltage responsive visual indication means comprising an elongated array of a plurality of light emitting diodes each physically located in close spaced relationship with a different one of said plurality of points along the length of said resistive surface.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-06 | 1980-01-05 | 1980-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-06 | 1984-01-05 | 1984-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-06 | 1988-01-05 | 1988-07-06 | $7700.00 | Window Closed / Lapsed |