US4393554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locking device for safety belts
Assignee: FEPA FEINSTANZWERK A GERMAN CORP GmbH
•
Filing: 1981-02-25
•
Granted: 1983-07-19
•
Expires: 2001-02-25
Abstract
Abstract Locking device for a safety belt with a belt lock and a plug-in tongue fastened to the belt end. The tongue can be engaged with an engagement edge by at least one latch which is movable transversely to the plug-in direction of the plug-in tongue. The latch in the region of the engagement edge of the plug-in tongue has a profile which comes close to complementing the shape of the engagement edge as it changes under load.
Inventors
- 👤 Franz Wier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:45
CPC Classifications
A; A44; A44B; A44B11/00; A44B11/25; A44B11/2503; A44B11/2507; A44B11/2523; Y; Y10; Y10T; Y10T24/00; Y10T24/45; Y10T24/45225; Y10T24/45602; Y10T24/45723
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
119 words
Locking device for a safety belt comprising a belt lock having two spaced plates defining an insertion path, a plug-in tongue attached to a belt for insertion in the insertion path, a latching bolt having an engagement surface movable transversely to the plug-in direction of the plug-in tongue to block withdrawal of the tongue by contact of said engagement surface with a straight edge surface of said plug-in tongue, said straight edge surface changing its shape upon the belt being subjected to a load and said engagement surface of said latch contoured to complement the shape of said edge surface under load to thereby provide increased contact area between said latching bolt and said plug-in tongue under load conditions.
Claim 2
Dependent Claim
119 words
Locking device for a safety belt comprising a belt lock having two spaced plates defining an insertion path, a plug-in tongue attached to a belt for insertion in the insertion path, a latching bolt having an engagement surface movable transversely to the plug-in direction of the plug-in tongue to block withdrawal of the tongue by contact of said engagement surface with a straight edge surface of said plug-in tongue, said straight edge surface changing its shape upon the belt being subjected to a load and said engagement surface of said latch contoured to complement the shape of said edge surface under load to thereby provide increased contact area between said latching bolt and said plug-in tongue under load conditions.
Claim 3
Dependent Claim
40 words
Locking device according to claim 1, wherein the tongue has a detention opening with a single, straight engagement edge, and wherein the latch has an arched profile as the surface in contact with the edge surface of the plug-in tongue.
Claim 4
Dependent Claim
40 words
Locking device according to claim 1, wherein the tongue has a T-shape, and wherein the latch has two wedge-shaped profiles arranged at both sides of the tongues as the surfaces in contact with the edge surfaces of the plug-in tongue.
References Cited (Backward Citations)
US3789492A
Cited
US4197619A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-07-18 | 1987-01-17 | 1987-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-18 | 1991-01-17 | 1991-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-18 | 1995-01-17 | 1995-07-19 | $7700.00 | Window Closed / Lapsed |