US4253544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Energy absorbing lanyard
Assignee: C & D ACQUISITION CORP A CORP OF DE
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Filing: 1980-02-11
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Granted: 1981-03-03
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Expires: 2000-02-11
Abstract
Abstract A shock absorbing lanyard (10) having a warning flag (20) for indicating the status of the lanyard (10). Upon the application of a predetermined force, as the lanyard (10) elongates, a gathered section (18) simultaneously stretches and frees the flag (20). The freed flag (20) indicates that the lanyard (10) has been used and must be discarded.
Inventors
- 👤 George C. Dalmaso
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:27
CPC Classifications
A; A62; A62B; A62B35/00; A62B35/04; D; D07; D07B; D07B1/00; D07B1/14; D07B1/145; D07B1/148
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
61 words
An energy absorbing lanyard, the lanyard comprising a tensile load bearing core having a predetermined tensile yield strength, a tube jacket affixed to and circumscribing the core, an indicator flag affixed to the jacket, and means for freeing at least a portion of the flag from the jacket when the lanyard is subjected to a tensile load above a predetermined value.
Claim 2
Dependent Claim
61 words
An energy absorbing lanyard, the lanyard comprising a tensile load bearing core having a predetermined tensile yield strength, a tube jacket affixed to and circumscribing the core, an indicator flag affixed to the jacket, and means for freeing at least a portion of the flag from the jacket when the lanyard is subjected to a tensile load above a predetermined value.
Claim 3
Dependent Claim
31 words
The lanyard according to claim 1 wherein a portion of the jacket is gathered about the core to accommodate extension of the core when the load is impressed upon the lanyard.
Claim 4
Dependent Claim
30 words
The lanyard according to claim 2 wherein the jacket is longer than the core in the approximate ratio of three inches of gathered jacket material for each foot of lanyard.
Claim 5
Dependent Claim
41 words
The lanyard according to claim 2 wherein the freeable portion of the flag is folded upon itself, the folds temporarily affixed to the gathered portion of the jacket and ready to be released when the load is impressed upon the lanyard.
Claim 6
Dependent Claim
17 words
The lanyard according to claim 4 wherein the flag is affixed to the jacket with breakaway stitching.
Claim 7
Dependent Claim
18 words
The lanyard according to claim 1 wherein one end of the flag is permanently affixed to the jacket.
Claim 8
Dependent Claim
16 words
The lanyard according to claim 1 wherein the core is made from a synthetic semi-drawn material.
Claim 9
Dependent Claim
18 words
The lanyard according to claim 1 wherein the core is made from a synthetic bulked continuous filament material.
Claim 10
Dependent Claim
15 words
The lanyard according to claim 1 wherein the jacket is made from a synthetic material.
Claim 11
Dependent Claim
15 words
The lanyard according to claims 7, 8 or 9 wherein the synthetic material is nylon.
Claim 12
Dependent Claim
23 words
The lanyard according to claim 1 wherein at least one end of the lanyard includes means for attaching the lanyard to another object.
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) | 1984-03-02 | 1984-09-01 | 1985-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-02 | 1988-09-01 | 1989-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-02 | 1992-09-01 | 1993-03-03 | $7700.00 | Window Closed / Lapsed |