US4000875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
One-piece strain relief bushing with independent holding means
Assignee: Heyman Manufacturing Co
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Filing: 1975-05-09
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Granted: 1977-01-04
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Expires: 1995-05-09
Abstract
Abstract A one-piece strain relief bushing includes independent means for grasping the wall surrounding an aperture and open and closeable means for grasping a cord or cable so as to relieve strain while being able to release the cord or cable without having to detach the strain relief bushing from its position in the aperture.
Inventors
- 👤 William Jemison
- 👤 Salvatore Orlando
- 👤 Richard Fink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:54
CPC Classifications
H; H02; H02G; H02G3/00; H02G3/02; H02G3/06; H02G3/0616; H02G3/0625
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
141 words
A one-piece strain relief bushing including means independent of its strain relief function to hold itself locked in an aperture, said strain relief bushing including an opening therethrough through which a cable may be received, and an aperture extending into said bushing from the circumference of its body, said aperture opening into said cable receiving opening, a cam having a locked and unlocked position, said cam extendable through said aperture into the body of said bushing and into said cable opening, said cam including a hinge at one portion of said cam on said body of said bushing and at an edge of said aperture, said cam further including means to grip at another portion of said cam, means in said bushing to engage said cam's means to grip and to hold said cam locked in position in said cable opening.
Claim 2
Dependent Claim
141 words
A one-piece strain relief bushing including means independent of its strain relief function to hold itself locked in an aperture, said strain relief bushing including an opening therethrough through which a cable may be received, and an aperture extending into said bushing from the circumference of its body, said aperture opening into said cable receiving opening, a cam having a locked and unlocked position, said cam extendable through said aperture into the body of said bushing and into said cable opening, said cam including a hinge at one portion of said cam on said body of said bushing and at an edge of said aperture, said cam further including means to grip at another portion of said cam, means in said bushing to engage said cam's means to grip and to hold said cam locked in position in said cable opening.
Claim 3
Dependent Claim
23 words
The invention of claim 1 wherein said cam hinge is integral to a web and spaced apart from said cam by a hollow.
Claim 4
Dependent Claim
18 words
The invention of claim 1 wherein said means to engage said cam's means to grip is a pawl.
Claim 5
Dependent Claim
19 words
The invention of claim 3 including a hollow adjacent said pawl said hollow adapted to receive an opening tool.
Claim 6
Dependent Claim
18 words
The invention of claim 1 including ridge means in said bushing opposite said cam to hold a cable.
Claim 7
Dependent Claim
18 words
The invention of claim 1 including serration means in said bushing opposite said cam to hold a cable.
Claim 8
Dependent Claim
31 words
The invention of claim 1 including a gap between said cam's means to grip and said bushing body when said cam is locked, said gap adapted to receive an opening tool.
Claim 9
Dependent Claim
33 words
The invention of claim 1 including means to prevent abrasion interposed between said cam and a cable when said cam is in said locked position with a cable in said strain relief bushing.
Claim 10
Dependent Claim
14 words
The invention of claim 8 wherein said means to prevent abrasion is a shield.
Claim 11
Dependent Claim
15 words
The invention of claim 8 wherein said means to prevent abrasion is a grip block.
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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) | 1980-01-04 | 1980-07-05 | 1981-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-04 | 1984-07-05 | 1985-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-04 | 1988-07-05 | 1989-01-04 | $7700.00 | Window Closed / Lapsed |