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US3673540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indicating device for tuning apparatus
Assignee: Lanteris Space LLC
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Filing: 1971-01-26
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Granted: 1972-06-27
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Expires: 1991-01-26
Abstract
Abstract A lead screw operated potentiometer used in a VVC tuning system for a television receiver is provided with a station indicator driven by the tracking arm of the potentiometer, and visible through a transparent dust cover that is snapped-over the potentiometer body.
Inventors
- 👤 Robert M Mcdonough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:56
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/30; H01C10/38; H01C10/40
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
160 words
In a potentiometer of the lead screw operated type including an elongate, open-sided housing, a lead screw extending along the length of said housing and supported for rotation therein, means for rotating said lead screw, a resistance element in said housing and generally coextensive with said lead screw, and a carriage driven by said lead screw including a sliding contact engaging said resistance element, the improvement comprising: indicator means slidable with said carriage and positioned for viewing through the open side of said housing, said indicator means comprising a generally rectangular body portion provided with pointer means and having projecting end portions disposed astride said lead screw and abuttingly engaging end portions of said carriage; and a cover for said housing including a transparent region extending over at least said open side of said housing, said cover closely overlying said rectangular body portion of said indicator, and positioned to retain the latter in its recited assembled association with said carriage.
Claim 2
Dependent Claim
160 words
In a potentiometer of the lead screw operated type including an elongate, open-sided housing, a lead screw extending along the length of said housing and supported for rotation therein, means for rotating said lead screw, a resistance element in said housing and generally coextensive with said lead screw, and a carriage driven by said lead screw including a sliding contact engaging said resistance element, the improvement comprising: indicator means slidable with said carriage and positioned for viewing through the open side of said housing, said indicator means comprising a generally rectangular body portion provided with pointer means and having projecting end portions disposed astride said lead screw and abuttingly engaging end portions of said carriage; and a cover for said housing including a transparent region extending over at least said open side of said housing, said cover closely overlying said rectangular body portion of said indicator, and positioned to retain the latter in its recited assembled association with said carriage.
Claim 3
Dependent Claim
72 words
A potentiometer as stated in claim 1, and characterized in that said housing is of a generally box-shaped configuration having spaced confronting side walls disposed to either side of, and parallel to, the longitudinal axis of said lead screw, and further in that the recited generally rectangular body portion of said indicator means slidably engages both said confronting side walls of said housing and the recited cover, in retention of said indicator.
Claim 4
Dependent Claim
43 words
In combination with the potentiometer as stated in claim 2: a wiring panel; and an indicia-bearing apertured panel spaced from and confronting said wiring panel, said potentiometer being supported on said wiring panel and in registry with an aperture on said indicia-bearing panel.
Claim 5
Dependent Claim
48 words
A potentiometer as stated in claim 2, and characterized further in that said cover is of a transparent material having a generally box-shaped configuration corresponding to the shape and size of said housing, and in that said cover is slidably fitted on said housing for frictional retention thereon.
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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |