US3781045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor-vehicle door latch with lock mechanism only actuatable with door closed
Assignee: Kiekert AG
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Filing: 1972-01-24
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Granted: 1973-12-25
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Expires: 1992-01-24
Abstract
Abstract A door latch has a bifurcate pivotal lock pawl with a pair of arms embracing the lock pin on the doorpost to hold the vehicle door closed. A keeper in the form of a rotatable pin is formed with a notch so that as the door is closed the arms of the pawl in turn cam the keeper around and lodge behind this keeper. The keeper can be rotated both from inside and outside the vehicle to clear the arms of the pawl and enable the door to open. Similarly a lock mechanism can prevent the door-opening mechanism from functioning. The keeper fixedly carries a crank arm having a projection which prevents the lock mechanism from working in all but the closed position of the door to prevent the user from locking his keys in the vehicle. The arms of the pawl serve to arrest the keeper in different angular positions to effect this safety measure.
Inventors
- 👤 H Watermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:01
CPC Classifications
E; E05; E05B; E05B85/00; E05B85/20; E05B85/24; E05B85/243; E05B77/00; E05B77/14; E05B77/16; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/1043; Y10T292/1044; Y10T292/1045; Y10T292/1047
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
257 words
A latch comprising: a support; a pawl pivotal on said support and lockingly engageable with a bolt; a keeper on said support operatively engageable with said pawl and displaceable between a first position blocking pivoting of said pawl and a second position allowing pivoting of said pawl, said pawl having a curved camming surface engaging said keeper for rotating same upon entrainment of said pawl by said bolt; actuating means engageable with said keeper for displacing said keeper from said first to said second position to open said latch; locking means operatively engageable with said actuating means and opeRable for preventing displacement of said keeper from said second to said first position by said actuating means and thereby locking said latch; and means operatively connected between said locking means and said keeper for preventing operation of said locking means to lock said latch only with said keeper in said first position, said keeper carrying a crank constituting part of said actuating means, of said locking means, and of the third-mentioned means, said crank being angularly fixed to said keeper and rotatable therewith, said crank being formed with a projection displaceable on displacement of said keeper between said first and second positions, said locking means including a displaceable locking element adjacent said projection, said projection in said second position of said keeper engaging said element and preventing movement of same, said crank being formed with a nose engaging said support in said open condition of said latch to prevent the latch from being locked in an open-door position.
Claim 2
Dependent Claim
257 words
A latch comprising: a support; a pawl pivotal on said support and lockingly engageable with a bolt; a keeper on said support operatively engageable with said pawl and displaceable between a first position blocking pivoting of said pawl and a second position allowing pivoting of said pawl, said pawl having a curved camming surface engaging said keeper for rotating same upon entrainment of said pawl by said bolt; actuating means engageable with said keeper for displacing said keeper from said first to said second position to open said latch; locking means operatively engageable with said actuating means and opeRable for preventing displacement of said keeper from said second to said first position by said actuating means and thereby locking said latch; and means operatively connected between said locking means and said keeper for preventing operation of said locking means to lock said latch only with said keeper in said first position, said keeper carrying a crank constituting part of said actuating means, of said locking means, and of the third-mentioned means, said crank being angularly fixed to said keeper and rotatable therewith, said crank being formed with a projection displaceable on displacement of said keeper between said first and second positions, said locking means including a displaceable locking element adjacent said projection, said projection in said second position of said keeper engaging said element and preventing movement of same, said crank being formed with a nose engaging said support in said open condition of said latch to prevent the latch from being locked in an open-door position.
Claim 3
Dependent Claim
28 words
The latch defined in claim 1 wherein said keeper is a rotatable pin formed with a step having a surface engageable by said camming surface of said pawl.
Claim 4
Dependent Claim
28 words
The latch defined in claim 2 wherein said pin is formed with a substantially frustoconical ridged surface at one end, said crank being force-fitted over said frustoconical surface.
Claim 5
Dependent Claim
25 words
The latch defined in claim 2 wherein said pawl has a pair of arms engageable with said keeper, said bolt being engageable between said arms.
Claim 6
Dependent Claim
38 words
The latch defined in claim 4 wherein in an open condition of said latch one of said arms lies against said keeper and in a closed condition corresponding to said first position the other arm engages said keeper.
Claim 7
Dependent Claim
39 words
The latch defined in claim 5 wherein said keeper is engageable in said one position behind said other arm in said locked condition of said latch, said other arm being formed with a notch receiving part of said keeper.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |