US3696471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Releasable buckle
Assignee: Tyco International Ltd
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Filing: 1971-03-18
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Granted: 1972-10-10
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Expires: 1991-03-18
Abstract
Abstract A buckle comprising a frame member formed with strap openings at its ends and a bridge intermediate its ends; and a clamping member pivotally mounted intermediate its ends to the frame member. The clamping member has a tongue at one end extending beneath the bridge for clamping a strap against the bridge and a strap slot near its other end bounded on one side by an edge overlying a strap opening in the frame. This slot edge is further from the pivot axis than the bridge so that a pivotal force applied to the clamping member at the edge by tension on the strap is multiplied to clamp the strap between the tongue and bridge. A spring is mounted on the frame for biasing the tongue toward the bridge and a lanyard is attached to the clamping member for pivoting it to release the strap.
Inventors
- 👤 Seymour Mermelstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:41
CPC Classifications
A; A44; A44B; A44B11/00; A44B11/02; A44B11/06; A44B11/12; Y; Y10; Y10T; Y10T24/00; Y10T24/40; Y10T24/4072; Y10T24/4077
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
187 words
A releasable buckle for clamping a strap comprising, in combination: a frame member for attachment to one end of a strap, said frame member including end sections formed with openings through which a strap may pass and an intermediate section including a raised, transverse bridge; a clamping member including first and second end sections and an intermediate section at which said clamping member is engaged with said intermediate section of said frame member for pivotal motion with respect thereto about an axis transverse to the direction of tension applied to a strap clamped by said buckle; said first end section of said clamping member extending beneath said bridge for clamping a strap disposed between said first end section and saiD bridge; said second section of said clamping member being formed with an opening for admitting a strap and bounded on the side closest said axis by a transverse edge overlying one of said openings in said frame member; and resilient means for biasing said clamping member so as to urge said first end section toward said bridge and thereby provide clamping engagement with a strap extending therebetween.
Claim 2
Dependent Claim
187 words
A releasable buckle for clamping a strap comprising, in combination: a frame member for attachment to one end of a strap, said frame member including end sections formed with openings through which a strap may pass and an intermediate section including a raised, transverse bridge; a clamping member including first and second end sections and an intermediate section at which said clamping member is engaged with said intermediate section of said frame member for pivotal motion with respect thereto about an axis transverse to the direction of tension applied to a strap clamped by said buckle; said first end section of said clamping member extending beneath said bridge for clamping a strap disposed between said first end section and saiD bridge; said second section of said clamping member being formed with an opening for admitting a strap and bounded on the side closest said axis by a transverse edge overlying one of said openings in said frame member; and resilient means for biasing said clamping member so as to urge said first end section toward said bridge and thereby provide clamping engagement with a strap extending therebetween.
Claim 3
Dependent Claim
28 words
A buckle as defined in claim 1 wherein the spacing between said transverse edge and said axis is greater than the spacing between said axis and said bridge.
Claim 4
Dependent Claim
22 words
A buckle as defined in claim 2 where the ratio between the aforesaid spacings is of the order of 4 to 1.
Claim 5
Dependent Claim
35 words
A buckle as defined in claim 1 wherein said frame member is formed of a single blank of sheet material and said bridge comprises a raised portion of said intermediate section of said frame member.
Claim 6
Dependent Claim
35 words
A buckle as defined in claim 4 wherein the said end sections of said frame member are bent away from said bridge to permit a strap to pass through said openings behind said frame member.
Claim 7
Dependent Claim
43 words
A buckle as defined in claim 1 wherein said intermediate section of said clamping member includes an opening and said intermediate section of said frame member includes an engagement section extending through the last-mentioned opening for pivotally coupling said members to one another.
Claim 8
Dependent Claim
20 words
A buckle as defined in claim 6 wherein said clamping member is formed of a single blank of sheet material.
Claim 9
Dependent Claim
30 words
A buckle as defined in claim 7 wherein the surface of said first end section of said clamping member facing said bridge is formed with projections for engaging a strap.
Claim 10
Dependent Claim
43 words
A buckle as defined in claim 1 including means attached to said second end section of said clamping member for pivoting the latter about said axis to release a strap engaged between said bridge and said first end section of said clamping member.
Claim 11
Dependent Claim
14 words
A buckle as defined in claim 9 wherein the last-mentioned means comprise a lanyard.
Claim 12
Dependent Claim
46 words
A buckle as defined in claim 10 wherein said second end section of said clamping member is bent back upon itself to impart a pivotal motion to said clamping member in response to tension applied to said lanyard in the direction of tension on said strap.
Claim 13
Dependent Claim
33 words
A buckle as defined in claim 1 wherein said resilient means comprise a spring mounted on said frame member and engaged with said first end section of said clamping member underlying said bridge.
Claim 14
Dependent Claim
26 words
A buckle as defined in claim 12 wherein said spring is formed of a single blank of resilient sheet material and is engaged with said bridge.
Claim 15
Dependent Claim
39 words
A buckle as defined in claim 13 wherein said resilient means includes a detent for engaging and releasably retaining said first end section in a release position spaced away from said bridge to facilitate threading of a strap therebetween.
Claim 16
Dependent Claim
46 words
A buckle as defined in claim 1 wherein said resilient means are formed of a single blank of resilient sheet material having a section providing a spring for biasing said first end section of said clamping member toward said bridge and another section constituting said detent.
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) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |