US3857397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically conductive wrist strap
Assignee: Custom Materials Inc
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Filing: 1972-11-27
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Granted: 1974-12-31
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Expires: 1992-11-27
Abstract
Abstract An electrically conductive wrist strap comprises a strip of conductive plastic material having an opening spaced from one end, outwardly of which is a pad of Velcro hooks. Intermediate its ends, there is a pad of Velcro loops of conductive material. The other end of the strap passes through the opening to form an adjustable loop, and a conductive terminal is carried by the other end for connection with a grounding conductor having a cooperating fastener at one end and a bull-dog clamp at the opposite end. The strap has a breaking strength permitting it to be broken by a strong pull, as in an emergency. A laminated electrically conductive material of predetermined tensile strength comprising an intermediate layer of Nylon scrim between and bonded to two outer layers of conductive polyolefin.
Inventors
- 👤 A Brosseau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:36
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/14; A61N1/02; A61N1/04; Y; Y10; Y10S; Y10S128/00; Y10S128/15; Y10T; Y10T428/00; Y10T428/24; Y10T428/24008; Y10T428/24017
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
110 words
An electrically conductive wrist strap comprising: a. an electrically conductive flexible strip having first and second ends, b. means comprising an opening in said strip spaced from and adjacent to the first end for permitting passage therethrough of the second end of said strip; c. first cooperating fastening means on said strip between said opening and said first end and second cooperating fastening means on said strip between said opening and said second end for adjustably fastening an intermediate portion of said strip to said strip at the first end thereof, and d. conductive terminal means on said strip, whereby a person wearing said strap may be connected to ground.
Claim 2
Dependent Claim
110 words
An electrically conductive wrist strap comprising: a. an electrically conductive flexible strip having first and second ends, b. means comprising an opening in said strip spaced from and adjacent to the first end for permitting passage therethrough of the second end of said strip; c. first cooperating fastening means on said strip between said opening and said first end and second cooperating fastening means on said strip between said opening and said second end for adjustably fastening an intermediate portion of said strip to said strip at the first end thereof, and d. conductive terminal means on said strip, whereby a person wearing said strap may be connected to ground.
Claim 3
Dependent Claim
19 words
The electrically conductive wrist strap of claim 1, said cooperating fastening means each comprising a sheet of Velcro-type material.
Claim 4
Dependent Claim
20 words
The electrically conductive wrist strap of claim 2, wherein only one of said sheets of Velcro-type material is electrically conductive.
Claim 5
Dependent Claim
19 words
The electrically conductive wrist strap of claim 3, wherein a said Velcro-type sheet containing loop elements is electrically conductive.
Claim 6
Dependent Claim
23 words
The electrically conductive wrist strap of claim 2, wherein said second sheet is of greater length along said strip than said first sheet.
Claim 7
Dependent Claim
19 words
The electrically conductive wrist strap of claim 1, wherein only one of said adjustable fastening means is electrically conductive.
Claim 8
Dependent Claim
24 words
The electrically conductive wrist strap of claim 1, said strip comprising means having a breaking strength permitting breaking of said strap by manual force.
Claim 9
Dependent Claim
32 words
The electrically conductive wrist strap of claim 7, said strip having a tensile strength between about 4,000 and 5,000 pounds per square inch and a cross-sectional area of about 0.0084 square inches.
Claim 10
Dependent Claim
28 words
The structure of claim 1, and further comprising a linearly extending conductor having structure engaging means at one end and means at the other end engaging said terminal.
Claim 11
Dependent Claim
17 words
The structure of claim 9, said last mentioned means comprising means releasably and rotatably engaging said terminal.
Claim 12
Dependent Claim
36 words
The electrically conductive wrist strap of claim 1, wherein said strip is a laminated material comprising an intermediate layer of scrim between two outer layers of conductive polyolefin material, said layers being in adjacent bonded relationship.
Claim 13
Dependent Claim
14 words
The electrically conductive wrist strap of claim 11, said intermediate layer being nylon scrim.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-30 | 1978-07-01 | 1978-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-30 | 1982-07-01 | 1982-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-30 | 1986-07-01 | 1986-12-31 | $7700.00 | Window Closed / Lapsed |