US3749818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric cord stress relief combined with a strain relief grommet
Assignee: Heyman Manufacturing Co
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Filing: 1971-09-30
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Granted: 1973-07-31
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Expires: 1991-09-30
Abstract
Abstract A stress relief is integrally joined to a strain relief bushing providing a spaced-away hold to a line cord providing an axis of movement relieving wire stress movement.
Inventors
- 👤 W Jemison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:52
CPC Classifications
H; H02; H02G; H02G3/00; H02G3/02; H02G3/06; H02G3/0616; H02G3/0625; H02G3/0658; F; F16; F16L; F16L5/00
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
156 words
In combination with a strain relief bushing adapted to hold an electric cord in an aperture, said strain relief bushing including a shank portion and grip block portion, said shank portion and grip block portion interfitting and adapted to kink said cord, integral stress relief means including a webbing; said webbing extending from both said shank and said grip block parts; said webbing including an integral engirdling means substantially intermediate thereof for said electric cord; said engirdling means being open therethrough; said webbing also comprising strap means in the form of arms retaining said engirdling means; said strap means extending a selected distance from said strain relief bushing to said engirdling means; said strap means and said engirdling means when engaged with said electric cord enabling movement for said electric cord substantially spaced apart from said strain relief bushing, said strap means supporting said engirdling means at a position spaced away from said strain relief bushing.
Claim 2
Dependent Claim
156 words
In combination with a strain relief bushing adapted to hold an electric cord in an aperture, said strain relief bushing including a shank portion and grip block portion, said shank portion and grip block portion interfitting and adapted to kink said cord, integral stress relief means including a webbing; said webbing extending from both said shank and said grip block parts; said webbing including an integral engirdling means substantially intermediate thereof for said electric cord; said engirdling means being open therethrough; said webbing also comprising strap means in the form of arms retaining said engirdling means; said strap means extending a selected distance from said strain relief bushing to said engirdling means; said strap means and said engirdling means when engaged with said electric cord enabling movement for said electric cord substantially spaced apart from said strain relief bushing, said strap means supporting said engirdling means at a position spaced away from said strain relief bushing.
Claim 3
Dependent Claim
30 words
The invention of claim 1, wherein said strap means joins said engirdling means at a tangent, and said webbing is adapted for torsional movement when engaged with said electric cord.
Claim 4
Dependent Claim
19 words
The invention of claim 1 wherein said strap means are joined Inward of the periphery of said engirdling means.
Claim 5
Dependent Claim
17 words
The invention of claim 3 wherein said engirdling means extends beyond the width of said strap means.
Claim 6
Dependent Claim
20 words
The invention of claim 3 wherein said strap means joins said engirdling means at a curve from said strap means.
Claim 7
Dependent Claim
18 words
The invention of claim 1 wherein said strap means extend from the outer periphery of said engirdling means.
Claim 8
Dependent Claim
22 words
The invention of claim 1 wherein said strap, means tends to bow inward when said strain relief portions are in closed position.
Claim 9
Dependent Claim
13 words
The invention of claim 1 wherein said strap means are substantially parallely aligned.
Claim 10
Dependent Claim
14 words
The invention of claim 8 wherein said strap means taper toward said engirdling means.
Claim 11
Dependent Claim
23 words
The invention of claim 1 wherein at least one part of said strain relief bushing includes at least one electric cord supporting tongue.
Claim 12
Dependent Claim
11 words
The invention of claim 1 including more than two strap means.
Claim 13
Dependent Claim
17 words
The invention of claim 11 wherein at least two said strap means converge toward said engirdling means.
Claim 14
Dependent Claim
15 words
The invention of claim 12 wherein four said strap means converge toward said engirdling means.
Claim 15
Dependent Claim
9 words
The invention of claim 11 including three strap means.
Claim 16
Dependent Claim
14 words
The invention of claim 14 wherein said engirdling means comprises a plate including segments.
Claim 17
Dependent Claim
14 words
The invention of claim 1 wherein said engirdling means comprises a plate including segments.
Claim 18
Dependent Claim
15 words
The invention of claim 1 wherein said strain relief bushing includes more than two parts.
Claim 19
Dependent Claim
84 words
In combination with a strain relief bushing adapted to hold an electric cord in an aperture, the said strain relief bushing including a shank portion and grip block portion, said shank portion and grip block portion interfitting and adapted to kink said electric cord, integral stress relief means including a plurality of tongues for surrounding said electric cord, said tongues attached to and extending a selected distance from said strain relief bushing, said tongues being for providing a stress relief for said electric cord.
Claim 20
Dependent Claim
84 words
In combination with a strain relief bushing adapted to hold an electric cord in an aperture, the said strain relief bushing including a shank portion and grip block portion, said shank portion and grip block portion interfitting and adapted to kink said electric cord, integral stress relief means including a plurality of tongues for surrounding said electric cord, said tongues attached to and extending a selected distance from said strain relief bushing, said tongues being for providing a stress relief for said electric cord.
Claim 21
Dependent Claim
17 words
The invention of claim 18 wherein said tongues are substantially evenly spaced about said strain relief bushing.
Claim 22
Dependent Claim
18 words
The invention of claim 18 wherein at least two pieces of said strain relief bushing include said tongues.
Claim 23
Dependent Claim
14 words
The invention of claim 18 wherein at least one of said tongues is tapered.
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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) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |