US4085905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blocking device preferably for reel-type safety belts for vehicles
Assignee: Individual
•
Filing: 1975-08-18
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Granted: 1978-04-25
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Expires: 1995-08-18
Abstract
Abstract A blocking device for vehicle reel-type safety belts with a ratchet wheel to be connected to the reel of the safety belt, a pair of pivotal pawls engageable with the ratchet wheel to prevent rotation of the ratchet wheel and thus the reel in one direction of rotation of the reel, a mechanism operable by an abnormal change of speed of the vehicle, capable of pivoting one of the pawls into engagement with the ratchet wheel and then said one pawl pivots the other of the pawls into engagement with the ratchet wheel stopping the unwinding of the safety belt.
Inventors
- 👤 Oskar Lennart Lindbald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:19
CPC Classifications
B; B60; B60R; B60R22/00; B60R22/34; B60R22/36; B60R22/40; B60R22/343; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2133; Y10T74/2136; Y10T74/2137
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
116 words
Blocking device for vehicle reel-type safety belts comprising a rotatably mounted ratchet wheel having teeth and capable of being connected to the reels of the safety belts, a pivotally mounted blocking pawl positioned for at times engaging the teeth of said ratchet wheel for preventing rotation of said ratchet wheel in one direction, actuating means being operable upon an abnormal change of speed of the vehicle, a pivotally mounted auxiliary pawl being postioned for being pivoted by said actuating means into engagement with said teeth and pivoting said blocking pawl into engagement with said teeth upon actuation of said actuating means, and resilient means tending to retain said auxiliary pawl into engagement with said actuating means.
Claim 2
Dependent Claim
116 words
Blocking device for vehicle reel-type safety belts comprising a rotatably mounted ratchet wheel having teeth and capable of being connected to the reels of the safety belts, a pivotally mounted blocking pawl positioned for at times engaging the teeth of said ratchet wheel for preventing rotation of said ratchet wheel in one direction, actuating means being operable upon an abnormal change of speed of the vehicle, a pivotally mounted auxiliary pawl being postioned for being pivoted by said actuating means into engagement with said teeth and pivoting said blocking pawl into engagement with said teeth upon actuation of said actuating means, and resilient means tending to retain said auxiliary pawl into engagement with said actuating means.
Claim 3
Dependent Claim
42 words
Blocking device according to claim 1, wherein said auxiliary pawl is arranged to bring said blocking pawl into engagement with the teeth of said ratchet wheel at a given distance of said teeth from the engagement point therewith of said auxiliary pawl.
Claim 4
Dependent Claim
19 words
Blocking device according to claim 2, wherein said distance substantially corresponds to the tooth pitch of said ratchet wheel.
Claim 5
Dependent Claim
44 words
Blocking device according to claim 1, wherein a support of said pawls has a guiding surface and said auxiliary pawl is arranged to penetrate in between said blocking pawl and said guiding surface for pivoting said blocking pawl into engagement with said ratchet wheel.
Claim 6
Dependent Claim
63 words
Blocking device according to claim 1 including a pivotally mounted arm, said auxiliary pawl being pivotally mounted on said arm, a support for said pawls, a sping being connected to said support and said arm, said arm being pivotable against said blocking pawl against the bias of said spring and being arranged to bring said blocking pawl into engagement with said ratchet wheel.
Claim 7
Dependent Claim
64 words
A blocking device according to claim 5 wherein said blocking pawl has a projection, a second spring bears against said projection, said arm has a supporting edge against which said projection bears in the normal position of said blocking pawl, and a recess into which said projection enters under the bias of said second spring, when said arm is pivoting against said blocking pawl.
Claim 8
Dependent Claim
15 words
Blocking device according to claim 1 wherein said actuation means is of an acceleration-sensing type.
Claim 9
Dependent Claim
36 words
Blocking device according to claim 7 wherein said actuation means comprises a pendulum, a plate rigidly connected with said pendulum, a foundation having said plate resting thereon, and said auxiliary pawl is bearing on said plate.
Claim 10
Dependent Claim
27 words
Blocking device according to claim 8 wherein said actuation means comprises an upright pendulum extending with a substantially circular curvature around the periphery of said ratchet wheel.
Claim 11
Dependent Claim
32 words
Blocking device according to claim 7 wherein said actuation means comprises a cup, a ball movable in said cup and a pivotable lever arm bearing against said ball and said auxiliary pawl.
Claim 12
Dependent Claim
37 words
Blocking device according to claim 1 including a spring connected to said auxiliary pawl and an arm pivotable around an axis and connected with said spring, said arm being arranged to be pivoted by said actuation means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-24 | 1981-10-24 | 1982-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-24 | 1985-10-24 | 1986-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-24 | 1989-10-24 | 1990-04-25 | $7700.00 | Window Closed / Lapsed |