US4939501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sliding foot controller
Assignee: Individual
•
Filing: 1989-09-18
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Granted: 1990-07-03
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Expires: 2009-09-18
Abstract
Abstract A foot-operated controller is disclosed herein having a housing enclosing an elongated resistive element carried on the underside of a top panel midway between its opposite sides. The top panel is provided with a slot slidably accommodating an electrical contact in slidable engagement with the resistive element. A foot-engaging treadle is disposed on the top panel from which the electrical contact downwardly depends so as to travel therewith as the treadle moves. The treadle is provided wheeled support riding in a grooved track carried on a bottom panel of the housing. Stops are provided on the opposite ends of the grooves to limit linear movement of the treadle and electrical leads and plugs are included.
Inventors
- 👤 Robert P. Weil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:25
CPC Classifications
H; H01; H01H; H01H15/00; H01H15/02; H01H15/06; H01H15/10; H01H15/12; H01C; H01C10/00; H01C10/14; H01C10/30
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
159 words
A foot controller for sliding an electrical contact along a linear resistive element, the combination comprising: a rectangular housing enclosing a component compartment defined between a top panel and a bottom panel; p1 an elongated central slot provided in said top panel communicating with said component compartment; a foot treadle movably disposed on said housing adjacent to said top panel adapted to be moved rectilinearly across said top panel slot between the opposite ends of said housing; a linear resistive element carried in said component compartment under said top panel; an electrical contact secured to said treadle and downwardly projecting through said elongated slot into operative contact with said resistive element; means cooperatively carried on said housing and said treadle to rollably support said treadle on said housing; said rollable support means includes a pair of rails fixed on said housing bottom panel in spaced-apart relationship; and wheel sets downwardly depending from said treadle in rollable contact with rails.
Claim 2
Dependent Claim
159 words
A foot controller for sliding an electrical contact along a linear resistive element, the combination comprising: a rectangular housing enclosing a component compartment defined between a top panel and a bottom panel; p1 an elongated central slot provided in said top panel communicating with said component compartment; a foot treadle movably disposed on said housing adjacent to said top panel adapted to be moved rectilinearly across said top panel slot between the opposite ends of said housing; a linear resistive element carried in said component compartment under said top panel; an electrical contact secured to said treadle and downwardly projecting through said elongated slot into operative contact with said resistive element; means cooperatively carried on said housing and said treadle to rollably support said treadle on said housing; said rollable support means includes a pair of rails fixed on said housing bottom panel in spaced-apart relationship; and wheel sets downwardly depending from said treadle in rollable contact with rails.
Claim 3
Dependent Claim
30 words
The invention as defined in claim 1 including: a pair of slots in said top panel separated by said central slot for accommodating wheel support elements attached to said treadle.
References Cited (Backward Citations)
US3151307A
Cited
US4251796A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-07-02 | 1994-01-01 | 1994-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-02 | 1998-01-01 | 1998-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-02 | 2002-01-01 | 2002-07-03 | $7700.00 | Window Closed / Lapsed |