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EP0056894A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Safety belt webbing emergency locking apparatus

Assignee: American Safety Equipment Corp
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Filing: 1981-08-27
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Granted: —
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Expires: 2001-08-27
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Abstract

Abstract Clamping (35) means for selectively clamping safety belt webbing (11) against further movement relative to the clamping means and an inertia responsive means (55) for operating the clamping means independently of webbing movement to a webbing clamp position in response to changes in vehicle inertia, the clamping means including a wedge shaped clamp member (45) having a high strength, resilient and high coefficient of friction material provided for engaging the webbing portions to be clamped, biasing means (66) for normally biasing the wedge member (45) toward a webbing clamping position, releasable retaining means for normally holding the wedge member against movement under its bias and tripping means operated in response to changes in vehicle inertia for releasing the retaining means to allow wedge movement under its bias to the webbing clamping position. The vehicle inertia activated clamping means may be employed as the sole restraint apparatus of a safety belt or in combination with an emergency locking retractor to provide a dual locking system.

Inventors

  • 👤 Avraham Ziv

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-27 23:48
CPC Classifications
B; B60; B60R; B60R22/00; B60R22/18; B60R22/185

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 55 words
A safety belt webbing emergency locking apparatus comprising: clamping means for selectively clamping safety belt webbing against further movement relative to the clamping means; and inertia responsive means for operating said clamping means to clamp said webbing against said further relative movement in response to vehicle acceleration, or deceleration, of more than a predetermined amount.
Claim 2
Dependent Claim 55 words
A safety belt webbing emergency locking apparatus comprising: clamping means for selectively clamping safety belt webbing against further movement relative to the clamping means; and inertia responsive means for operating said clamping means to clamp said webbing against said further relative movement in response to vehicle acceleration, or deceleration, of more than a predetermined amount.
Claim 3
Dependent Claim 36 words
A safety belt according to Claim 1 wherein said clamping means comprises: a wedge shaped clamp member and means for mounting said clamp member for movement from a webbing disengaging position to a webbing clamping position.
Claim 4
Dependent Claim 83 words
A safety belt according to Claim 1 or 2 wherein said clamping means further comprises: a stationary webbing abutment surface, an inclined planar surface spaced from said abutment surface and aligned thereto to allow passage of webbing therebetween and wherein said means for mounting said clamp member mounts said member between said surfaces whereby movement of said member along said inclined planar surface forces said wedge member against said abutment surface with said webbing positioned between said abutment surface and said wedge member.
Claim 5
Dependent Claim 56 words
A safety belt according to Claim 3 wherein a high strength resilient material is provided on said webbing abutment surface and upon a surface of said wedge shaped clamp member facing said webbing wehreby said material engages opposite sides of said webbing as said webbing is clamped between said abutment surface and said wedge shaped member.
Claim 6
Dependent Claim 19 words
A safety belt according to Claim 4 wherein said high strength resilient material has a high coefficient of friction.
Claim 7
Dependent Claim 76 words
A safety belt according to Claim 1 wherein said inertia responsive means comprises: biasing means for normally biasing said clamping wedge member toward said webbing clamping positiion; releasable retaining means for normally holding said wedge shaped member against movement toward said webbing clamping position; and vehicle inertia activated tripping means for operating said releasable retaining means to a release position whereby said wedge shaped member is moved by said biasing means to said webbing clamping position.
Claim 8
Dependent Claim 40 words
A safety belt according to Claim 6 wherein: said means for mounting said wedge shaped member includes a pivotally mounted support bar underlying said wedge shaped member; and said biasing means comprises a spring operably connected to said support bar.
Claim 9
Dependent Claim 57 words
A safety belt according t 9 Claim 7 wherein said releasable retaining means comprises an over center linkage operably connected between said vehicle inertia activated tripping means and said support bar whereby said linkage normally holds said bar against the bias of said spring and is released by action thereon of said vehicle inertia activated tripping means.
Claim 10
Dependent Claim 41 words
A safety belt according to Claim 8 wherein said vehicle inertia activated tripping means comprises an inertia sensing mass and associated means for engaging said over center linkage means whereby movement of said mass operates said linkage means to release position.
Claim 11
Dependent Claim 13 words
A safety belt substantially as described herein with reference to the accompanying drawings.
Claim 12
Dependent Claim 13 words
A safety belt substantially as described herein with reference to the accompanying drawings.

References Cited (Backward Citations)

US3504867A Cited
CH532494A Cited
FR2215846A5 Cited
FR2226840A6 Cited
FR2383677A1 Cited

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