US3735381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Testing apparatus for selectively enabling controlled equipment
Assignee: Individual
•
Filing: 1971-06-01
•
Granted: 1973-05-22
•
Expires: 1991-06-01
Abstract
Abstract Electronic apparatus requires that the operator of a motor vehicle accurately trace the full course of a segmented undulating serpentine path as a condition precedent to starting a motor vehicle. The path segments must be engaged in seriatum to enable the automobile ignition circuit via intermediate cascaded bistable electronic circuitry.
Inventors
- 👤 E Zadig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:57
CPC Classifications
B; B60; B60K; B60K28/00; B60K28/02; B60K28/06; B60K28/063
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
178 words
In combination in testing apparatus for selectively enabling controlled equipment, a plurality of spaced switch members having contact surfaces thereof arranged in an irregular path, plural cascaded bistable circuits, means responsive to the output of each of plural of said bistable circuit for selectively partially enabling the next following bistable circuit, means connecting each of said switch members with an input of a different one of said bistable circuits, an activated one of said switch members switching only a partially enabled bistable circuit connected thereto, means responsive to the last of said cascaded bistable circuits attaining a predetermined state for enabling the controlled equipment, and at least one additional switch contact sheet disposed in proximate relation to said irregular patharranged contact surfaces of said plural spaced switch members, means responsive to any of said additional sheet being activated for resetting said bistable circuits, and means for tracing along said irregular path-arranged contact surfaces to enable the controlled equipment when said contacts are serially engaged by said tracing means without said tracing means engaging said additional switch contact sheet.
Claim 2
Dependent Claim
178 words
In combination in testing apparatus for selectively enabling controlled equipment, a plurality of spaced switch members having contact surfaces thereof arranged in an irregular path, plural cascaded bistable circuits, means responsive to the output of each of plural of said bistable circuit for selectively partially enabling the next following bistable circuit, means connecting each of said switch members with an input of a different one of said bistable circuits, an activated one of said switch members switching only a partially enabled bistable circuit connected thereto, means responsive to the last of said cascaded bistable circuits attaining a predetermined state for enabling the controlled equipment, and at least one additional switch contact sheet disposed in proximate relation to said irregular patharranged contact surfaces of said plural spaced switch members, means responsive to any of said additional sheet being activated for resetting said bistable circuits, and means for tracing along said irregular path-arranged contact surfaces to enable the controlled equipment when said contacts are serially engaged by said tracing means without said tracing means engaging said additional switch contact sheet.
Claim 3
Dependent Claim
22 words
A combination as in claim 1 further comprising timer means for resetting said bistable means after a predetermined testing interval has elapsed.
Claim 4
Dependent Claim
45 words
A combination as in claim 1 further comprising check lamp means, means for illuminating said check lamp means during the course of a testing interval, start lamp means, and means for illuminating said start lamp means upon successful engagement in seriatum of said switch members.
References Cited (Backward Citations)
US3311187A
Cited
US3320490A
Cited
US3524989A
Cited
US3656114A
Cited
US3544804A
Cited
US3610943A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |