Patent US3670286A successfully refreshed from Google Patents.
US3670286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Potentiometer adjustable by rotatable drum
Assignee: Stackpole Carbon Co
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Filing: 1971-06-07
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Granted: 1972-06-13
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Expires: 1991-06-07
Abstract
Abstract The front wall of the elongated case of a linear motion potentiometer is provided with a longitudinal slot, in which a slide is disposed. The slide carries a bridging contact inside the case, where it engages spaced parallel resistor and collector elements. In front of the case and parallel to the slot are a stationary lead screw and a manually rotatable cylindrical drum, both supported from the case. The drum, when rotated, rotates internally threaded cylindrical means mounted on the screw and thereby moves it along the screw and drum. The slide is connected with the rotatable means so that the slide will be moved lengthwise of the case when the drum is rotated.
Inventors
- 👤 Mogens W Bang
- 👤 David A Olson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:49
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/30; H01C10/38; H01C10/40
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
138 words
A linear motion potentiometer comprising an elongated case having a front wall provided with a longitudinal slot therein, spaced parallel resistor and collector elements mounted in the case and extending lengthwise thereof, a slide disposed in said slot, a ridging contact in the case carried by the slide in engagement with both of said elements, a stationary lead screw in front of the case parallel to the slot, a manually rotatably cylindrical drum adjacent said screw and parallel thereto, means mounted on the case rigidly supporting the screw and rotatably supporting the drum, internally threaded cylindrical means rotatably mounted on the screw for movement along it and the drum, said rotatably means being engaged by the drum for rotation by it, and means connecting said rotatable means with the slide for moving the slide lengthwise of the case.
Claim 2
Dependent Claim
138 words
A linear motion potentiometer comprising an elongated case having a front wall provided with a longitudinal slot therein, spaced parallel resistor and collector elements mounted in the case and extending lengthwise thereof, a slide disposed in said slot, a ridging contact in the case carried by the slide in engagement with both of said elements, a stationary lead screw in front of the case parallel to the slot, a manually rotatably cylindrical drum adjacent said screw and parallel thereto, means mounted on the case rigidly supporting the screw and rotatably supporting the drum, internally threaded cylindrical means rotatably mounted on the screw for movement along it and the drum, said rotatably means being engaged by the drum for rotation by it, and means connecting said rotatable means with the slide for moving the slide lengthwise of the case.
Claim 3
Dependent Claim
33 words
A linear motion potentiometer according to claim 1, in which said rotatable means includes a circular nut and a friction ring encircling it and secured tightly thereto, said ring frictionally engaging the drum.
Claim 4
Dependent Claim
39 words
A linear motion potentiometer according to claim 1, in which said rotatable means includes a circular nut provided with a peripheral annular groove, and a resilient ring in said groove tightly engaging the nut and frictionally engaging the drum.
Claim 5
Dependent Claim
28 words
A linear motion potentiometer according to claim 1, in which said connecting means include forwardly extending projections of said slide engaging the opposite ends of said rotatable means.
Claim 6
Dependent Claim
35 words
A linear motion potentiometer according to claim 1, in which said connecting means include bifurcated members extending forward from said slide and straddling said screw, said members engaging the opposite ends of said rotatable means.
Claim 7
Dependent Claim
40 words
A linear motion potentiometer according to claim 1, in which said drum-supporting means is bracket means clamped onto the opposite ends of the case and having parallel end portions provided with openings receiving the ends of said drum and screw.
Claim 8
Dependent Claim
30 words
A linear motion potentiometer according to claim 6, in which said bracket means has a side portion extending along one side of the case and integrally connecting said end portions.
Claim 9
Dependent Claim
44 words
A linear motion potentiometer according to claim 6, in which said bracket means has a side portion extending along one side of the case and integrally connecting said end portions, and said end portions surround the ends of the case and tightly engage them.
References Cited (Backward Citations)
US3493914A
Cited
US3550060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |