US3746807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic turn-signal controller
Assignee: Individual
•
Filing: 1972-07-25
•
Granted: 1973-07-17
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Expires: 1992-07-25
Abstract
Abstract An automatic turn-signal control device comprising an axially displaceable threaded member which is driven for rotation by a driving cable extended from the driving shaft of the vehicle with a speed reduction, a pair of pawls either of which can exclusively engage with or disengage from the threaded member, a pair of turn-signal switches which are closed or opened in response to the engagement or disengagement of either pawl, externally operable means to urge either of the pawls from a neutral position for automatically resetting either pawl to a neutral position away from its engagement with the threaded member at the point where the threaded member has attained a predetermined axial displacement, and means for automatically resetting the disengaged threaded member to its starting point.
Inventors
- 👤 K Yasuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:53
CPC Classifications
B; B60; B60Q; B60Q1/00; B60Q1/26; B60Q1/34; B60Q1/40; B60Q1/42; B60Q1/425; Y; Y10; Y10T; Y10T74/00; Y10T74/11
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
156 words
An automatic turn signal control device communicating with a driving cable extending from the driving shaft of a vehicle with a speed reduction means for actuating and then deactuating the turn signals after a turn comprising an axially displaceable threaded member connected for rotation with said driving cable and normally running idle as it is driven; a pair of pawls, each of said pawls being engageable and disengageable with said threaded member; a pair of turn signal switch means operative in response To either of said pawls; external means for urging either of said pawls from a neutral position into engagement with said threaded member so as to indicate a turn; means for automatically resetting either of said pawls to a neutral position away from engagement with said threaded member at a point where said threaded member is at a predetermined axial displacement, and means for automatically resetting said disengaged threaded member to its starting point.
Claim 2
Dependent Claim
156 words
An automatic turn signal control device communicating with a driving cable extending from the driving shaft of a vehicle with a speed reduction means for actuating and then deactuating the turn signals after a turn comprising an axially displaceable threaded member connected for rotation with said driving cable and normally running idle as it is driven; a pair of pawls, each of said pawls being engageable and disengageable with said threaded member; a pair of turn signal switch means operative in response To either of said pawls; external means for urging either of said pawls from a neutral position into engagement with said threaded member so as to indicate a turn; means for automatically resetting either of said pawls to a neutral position away from engagement with said threaded member at a point where said threaded member is at a predetermined axial displacement, and means for automatically resetting said disengaged threaded member to its starting point.
Claim 3
Dependent Claim
46 words
The device of claim 1 wherein said external means for urging said pawls from a neutral position is a manual operating lever which is angularly displaceable in the direction the vehicle is indicated as turning and returned to the neutral position after completion of the turn.
Claim 4
Dependent Claim
22 words
The device of claim 1 wherein said threaded member has on its outer surface a continuously spiralled thread which is sharply serrated.
Claim 5
Dependent Claim
23 words
The device of claim 1 wherein said pawls are formed at the lower ends of a bell crank bifurcated from a support bar.
Claim 6
Dependent Claim
20 words
The device of claim 4 wherein upon inclination of said bell crank one of said pawls engages said threaded member.
Claim 7
Dependent Claim
24 words
The device of claim 1 wherein said threaded member is a truncated hollow cone having the threaded portion extending over the outer conical surface.
Claim 8
Dependent Claim
17 words
The device of claim 1 wherein said means for resetting said threaded member is a spring means.
References Cited (Backward Citations)
US2009693A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |