Patent US3594686A successfully refreshed from Google Patents.
US3594686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sliding-type variable resistor having thin film resistor layer comprising strap resistors
Assignee: Nikon Corp
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Filing: 1970-01-22
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Granted: 1971-07-20
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Expires: 1990-01-22
Abstract
Abstract The sliding-type variable resistor including thin film strap resistor layers formed by vacuum deposition, spattering, etc. upon an insulating material base, a plurality of tap electrodes and a sliding brush slidable thereover. Tap electrodes are arranged in the path of travel of the brush and extended in one direction from the path. Strap resistors are arranged with the same pitch as that of the tap electrodes and one end of the resistor overlays on the extended portion of the corresponding tap electrode. Each strap resistor overlays on the ends of two strap connectors, and each strap connector overlays on two adjacent strap resistors.
Inventors
- 👤 Tatsuo Fujii
- 👤 Yutaka Watano
- 👤 Masaaki Tsukamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:00
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/46; H01C10/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
192 words
A variable resistor comprising thin film resistor layers formed upon an insulating base, a plurality of tap electrodes and a sliding brush for slidable movement over said tap electrodes, an improvement resides in that strap-shaped tap electrodes (4'') arranged in side-by-side relation in the path of travel of said sliding brush are extended in one direction out of said path; strap resistors (7) arranged side-by-side relation with the same pitch with that of said tap electrodes and in the one-to-one relation therewith have their one ends overlaid upon said extended portions of said tap electrodes respectively, the width of each of said strap resistors being smaller than that of each of said tap electrodes; the sheet resistance of each of said strap resistors is higher than that of each of said tap electrodes each of said strap resistors is overlaid with enDs of two strap connectors (5), one of said two straps being connected to the adjacent strap resistor on the lower resistance side while the other, to the adjacent strap resistor on the higher resistance side; and each of said strap connectors is overlaid only upon the two adjacent strap resistors.
Claim 2
Dependent Claim
192 words
A variable resistor comprising thin film resistor layers formed upon an insulating base, a plurality of tap electrodes and a sliding brush for slidable movement over said tap electrodes, an improvement resides in that strap-shaped tap electrodes (4'') arranged in side-by-side relation in the path of travel of said sliding brush are extended in one direction out of said path; strap resistors (7) arranged side-by-side relation with the same pitch with that of said tap electrodes and in the one-to-one relation therewith have their one ends overlaid upon said extended portions of said tap electrodes respectively, the width of each of said strap resistors being smaller than that of each of said tap electrodes; the sheet resistance of each of said strap resistors is higher than that of each of said tap electrodes each of said strap resistors is overlaid with enDs of two strap connectors (5), one of said two straps being connected to the adjacent strap resistor on the lower resistance side while the other, to the adjacent strap resistor on the higher resistance side; and each of said strap connectors is overlaid only upon the two adjacent strap resistors.
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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |