US3689014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camming strain relief bushing
Assignee: Individual
•
Filing: 1971-06-18
•
Granted: 1972-09-05
•
Expires: 1991-06-18
Abstract
Abstract An aperture locking strain relief bushing is provided with available pre-locking shank sections. Strain relief is obtained by the interaction of a cammed grip block moveably emplaced within the closed parts of the bushing.
Inventors
- 👤 Richard R Fink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:46
CPC Classifications
H; H02; H02G; H02G3/00; H02G3/02; H02G3/06; H02G3/0616; H02G3/0625; H02G3/065
Claims Analysis
Total Claims: 47
Claim 1
Independent Claim
231 words
A strain relief bushing for retaining a cord in an aperture said strain relief bushing comprising an outer shank portion, said shank portion comprising at least two sections said shank portion including a flange portion at one end of said shank portion, said flange of greater periphery than said aperture, said flange portion of said shank having only a small protrusion beyond said aperture, aperture locking cooperating means, said aperture locking cooperating means adapted to lock said shank in said aperture in cooperation with said flange, a channel through said shank portion, at least one portion of said channel being recessed adapted to receive a grip block, said recess including camming means depressing the channel peripHery at least toward the flange end of said shank portion, a grip block, said grip block functionally separate from said shank, said grip block adapted to cam along said camming means, said grip block adapted to have some longitudinal play in said recess, and said grip block in said recess in said channel adapted to cooperate with said cord and graspingly cam against said cord as said cord is moved at least in the direction of said flange, stop means integral of said bushing, said stop means adapted to limit said grip block''s longitudinal play and retain said grip block within said channel when said shank sections are juxtaposed with said cord in said channel.
Claim 2
Dependent Claim
231 words
A strain relief bushing for retaining a cord in an aperture said strain relief bushing comprising an outer shank portion, said shank portion comprising at least two sections said shank portion including a flange portion at one end of said shank portion, said flange of greater periphery than said aperture, said flange portion of said shank having only a small protrusion beyond said aperture, aperture locking cooperating means, said aperture locking cooperating means adapted to lock said shank in said aperture in cooperation with said flange, a channel through said shank portion, at least one portion of said channel being recessed adapted to receive a grip block, said recess including camming means depressing the channel peripHery at least toward the flange end of said shank portion, a grip block, said grip block functionally separate from said shank, said grip block adapted to cam along said camming means, said grip block adapted to have some longitudinal play in said recess, and said grip block in said recess in said channel adapted to cooperate with said cord and graspingly cam against said cord as said cord is moved at least in the direction of said flange, stop means integral of said bushing, said stop means adapted to limit said grip block''s longitudinal play and retain said grip block within said channel when said shank sections are juxtaposed with said cord in said channel.
Claim 3
Dependent Claim
28 words
The invention of claim 1 wherein said shank sections include catch locking means, said locking means adapted to lock said shank sections in juxtaposition against opening or sliding.
Claim 4
Dependent Claim
14 words
The invention of claim 2 wherein said locking means include interacting ears and studs.
Claim 5
Dependent Claim
28 words
The invention of claim 2 wherein said locking means include a pair of ears on one shank section and a pair of studs on said other shank section.
Claim 6
Dependent Claim
19 words
The invention of claim 2 wherein locking means are at the end of said shank sections opposite said flange.
Claim 7
Dependent Claim
30 words
The invention of claim 2 wherein locking means include at least one detent including a stud on one shank section and at least one catch on said other shank section.
Claim 8
Dependent Claim
20 words
The invention of claim 6 wherein said locking means are at the end of the shank sections opposite said flange.
Claim 9
Dependent Claim
15 words
The invention of claim 7 wherein said detent is surrounded by an ear when locked.
Claim 10
Dependent Claim
16 words
The invention of claim 2 wherein one portion of said channel is substantially a half tube.
Claim 11
Dependent Claim
15 words
The invention of claim 9 including means adapted to prevent rotary movement of said cord.
Claim 12
Dependent Claim
15 words
The invention of claim 10 wherein said rotary movement prevention means is a longitudinal protrusion.
Claim 13
Dependent Claim
15 words
The invention of claim 9 wherein said tubular portion of said channel includes grasping means.
Claim 14
Dependent Claim
11 words
The invention of claim 12 wherein said grasping means are serrations.
Claim 15
Dependent Claim
22 words
The invention of claim 2 wherein said camming means are also adapted to cams toward said shank and opposite said flange end.
Claim 16
Dependent Claim
11 words
The invention of claim 2 wherein said grip block is serrated.
Claim 17
Dependent Claim
26 words
The invention of claim 2 wherein said grip block portion in said recess has a substantially male configuration of the female recess of said shank portion.
Claim 18
Dependent Claim
20 words
The invention of claim 14 wherein said grip block portion has a substantially male configuration of said channel female recess.
Claim 19
Dependent Claim
29 words
The invention of claim 2 wherein said shank sections are integrally joined by strap means, said strap means yieldable to move to juxtapose said shank sections in locked position.
Claim 20
Dependent Claim
51 words
The invention of claim 2 wherein said shank sections are integrally joined by strap means, said strap means yieldable to move to juxtapose said shank sections in locked position and strap means adapted to integrally join said grip block said strap means yieldable to engage said grip block in said recess.
Claim 21
Dependent Claim
21 words
The invention of claim 19 wherein said grip block strap extends from the end of a shank section opposite said flange.
Claim 22
Dependent Claim
22 words
The invention as claimed in claim 20 wherein said grip block strap means extends from a shank section including a channel recess.
Claim 23
Dependent Claim
33 words
The invention of claim 19 wherein said grip block strap includes a normal bending axis adapted to fold said grip block with said grip block camming means juxtaposed to said recess camming means.
Claim 24
Dependent Claim
53 words
The invention of claim 19 wherein said grip block strap includes a normal bending axis adapted to fold said grip block with said grip block camming means juxtaposed to said recess camming means and said strap to said other shank section extends from said same shank section as said grip block extends from.
Claim 25
Dependent Claim
25 words
The invention of claim 23 wherein said shank section strap includes a normal bending axis adapted to fold said shank sections for normal locking engagement.
Claim 26
Dependent Claim
42 words
The invention of claim 23 whErein said grip block strap means and shank strap means hold said grip block and shank section beyond an axis along the longitudinal axis of the width of said shank section from which said strap means extend.
Claim 27
Dependent Claim
20 words
The invention of claim 1 wherein said aperture cooperation locking means by said flange is a groove in said shank.
Claim 28
Dependent Claim
20 words
The invention of claim 1 wherein said aperture cooperation locking means by said flange is at least one resilient finger.
Claim 29
Dependent Claim
13 words
The invention of claim 27 wherein said finger includes at least one shoulder.
Claim 30
Dependent Claim
12 words
The invention of claim 27 wherein said finger extends from said shank.
Claim 31
Dependent Claim
12 words
The invention of claim 27 wherein said finger extends from said flange.
Claim 32
Dependent Claim
21 words
The invention of claim 1 wherein said flange cooperating locking means is at least one hinged finger extending from said shank.
Claim 33
Dependent Claim
17 words
The invention of claim 31 wherein at least one of said fingers includes at least one shoulder.
Claim 34
Dependent Claim
20 words
The invention of claim 2 wherein said aperture cooperation locking means by said flange is a groove in said shank.
Claim 35
Dependent Claim
20 words
The invention of claim 2 wherein said aperture cooperation locking means by said flange is at least one resilient finger.
Claim 36
Dependent Claim
13 words
The invention of claim 33 wherein said finger includes at least one shoulder.
Claim 37
Dependent Claim
12 words
The invention of claim 33 wherein said finger extends from said shank.
Claim 38
Dependent Claim
12 words
The invention of claim 35 wherein said finger extends from said flange.
Claim 39
Dependent Claim
21 words
The invention of claim 2 wherein said flange cooperating locking means is at least one hinged finger extending from said shank.
Claim 40
Dependent Claim
17 words
The invention of claim 38 wherein at least one of said fingers includes at least one shoulder.
Claim 41
Dependent Claim
11 words
The invention of claim 2 wherein said grip block includes protrusions.
Claim 42
Dependent Claim
31 words
The invention of claim 19 wherein said aperture locking cooperating means in said shank includes at least one portion in said shank wall integral to said shank section at one end.
Claim 43
Dependent Claim
18 words
The invention of claim 41 wherein said flexible portion is integrally joined to said shank by hinge means.
Claim 44
Dependent Claim
14 words
The invention of claim 42 wherein said hinge means face inward of said shank.
Claim 45
Dependent Claim
14 words
The invention of claim 42 wherein such hinge means face outward of said shank.
Claim 46
Dependent Claim
13 words
The invention of claim 19 wherein said grip block strap includes gripping means.
Claim 47
Dependent Claim
13 words
The invention of claim 22 wherein said grip block strap includes gripping means.
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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) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |