US3560629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manually-controlled circuit
Assignee: Thomas International Corp
•
Filing: 1965-04-28
•
Granted: 1971-02-02
•
Expires: 1985-04-28
Abstract
Abstract An electronic chassis is provided at its forward edge with a pivoted foot pedal overlying the chassis. The pedal is journaled between projecting sidewalls of the chassis, and through linkages, actuates a control mounted to the chassis. At the rear of the chassis is an upright housing in which relatively large heat-generating components cause a rising column of air which, through venturi action, creates a draft in a portion of the assembly located above the heat-generating components, the latter draft serving to cool other components mounted in the upper portion of the chassis.
Inventors
- 👤 Morris L Tucci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:18
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/02; G10H1/04; G10H1/053; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20012; Y10T74/20189; Y10T74/20528
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
247 words
A foot pedal controlled circuit system, including in combination: a housing having a top wall and opposed lateral sidewalls, said sidewalls having a front edge and rear edge; said housing being a unitary structure having a pair of longitudinal slots in said sidewall respectively adjacent said sidewalls to produce a tab extension of said top wall, said tab extension extending forwardly and downwardly to a position between said sidewalls below the upper edges of said sidewalls; a foot pedal having a heel support portion, a toe support portion, and an intermediate portion, said pedal having a width dimensioned to fit between said sidewalls, pivot means at said from front edges of said sidewalls for supporting said intermediate portion of the pedal with said toe portion of the pedal extending over said top wall; control circuit means carried by said housing, said control circuit means including a physically-adjustable member; linkage means interconnecting said pedal and adjustable member for control of said circuit means by said pedal; said housing defining a first upright passageway and a second passageway, said second passageway having an exit in communication with the upper portion of said first passageway; and a first heat-producing electronic component mounted in said first passageway below said upper portion thereof, and a second electronic component mounted in heat-dissipating relationship with said second passageway; so that upward draft created at said exit of said second passageway creates a secondary draft through said second passageway thereby to cool said second compartment.
Claim 2
Dependent Claim
247 words
A foot pedal controlled circuit system, including in combination: a housing having a top wall and opposed lateral sidewalls, said sidewalls having a front edge and rear edge; said housing being a unitary structure having a pair of longitudinal slots in said sidewall respectively adjacent said sidewalls to produce a tab extension of said top wall, said tab extension extending forwardly and downwardly to a position between said sidewalls below the upper edges of said sidewalls; a foot pedal having a heel support portion, a toe support portion, and an intermediate portion, said pedal having a width dimensioned to fit between said sidewalls, pivot means at said from front edges of said sidewalls for supporting said intermediate portion of the pedal with said toe portion of the pedal extending over said top wall; control circuit means carried by said housing, said control circuit means including a physically-adjustable member; linkage means interconnecting said pedal and adjustable member for control of said circuit means by said pedal; said housing defining a first upright passageway and a second passageway, said second passageway having an exit in communication with the upper portion of said first passageway; and a first heat-producing electronic component mounted in said first passageway below said upper portion thereof, and a second electronic component mounted in heat-dissipating relationship with said second passageway; so that upward draft created at said exit of said second passageway creates a secondary draft through said second passageway thereby to cool said second compartment.
Claim 3
Dependent Claim
52 words
The combination defined in claim 1, in which said first passageway is restricted at its upper portion thereby to accelerate the upward draft created by said first component, and the exit of said second passageway is directed generally upwardly contiguous to and in communication with the restricted portion of said first passageway.
Claim 4
Dependent Claim
97 words
The combination defined in claim 1, in which said first passageway is generally rectangular in cross section, the upper portion of said first passageway being narrowed obliquely by a diagonally positioned first wall forming a restricted mouth at said upper portion of said first passageway, said second passageway being formed by another diagonally positioned wall substantially paralleling and spaced from said first wall and being open at its lower and upper ends; so as to permit passage of said secondary draft therethrough, said exit of said second passageway being contiguous to the mouth of said first passageway.
Claim 5
Dependent Claim
88 words
The combination defined in claim 3, in which said first wall and said second-mentioned diagonally positioned wall form a unitary structure and define between them said second passageway, said structure being secured to the remaining portion of said housing for pivotal movement about a horizontal axis passing through the upper portion of said unitary structure, so that said unitary structure constitutes an upper sloping wall for said first passageway which may be pivoted upwardly to expose said first wall and thereby give access for servicing said second component.
References Cited (Backward Citations)
US2534939A
Cited
US2863329A
Cited
US2986953A
Cited
US3217081A
Cited
US3274449A
Cited
US3247896A
Cited
US3253646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |