Patent US4338970A successfully refreshed from Google Patents.
US4338970A
Expired / Lapsed
US
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Recoverable sleeve
Assignee: Raychem Corp
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Filing: 1975-06-16
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Granted: 1982-07-13
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Expires: 1995-06-16
Abstract
Abstract A recoverable tubular article comprising an elastomeric sleeve held in an expanded or extended condition and capable of recovering to its unexpanded condition of smaller diameter upon the removal of an outer restraint, an outer restraint, essentially tubular in configuration, bonded to said elastomeric sleeve, said restraint and said bond between the sleeve and the restraint being sufficiently strong to retain the elastomeric sleeve in its expanded condition under ordinary conditions of storage and said restraint being capable of being segmented and peeled from said elastomeric sleeve to permit said sleeve to recover to its original state.
Inventors
- 👤 Joseph J. Krackeler
- 👤 Fred E. Weir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:14
CPC Classifications
H; H02; H02G; H02G15/00; H02G15/08; H02G15/18; H02G15/182; H02G15/1826; H02G1/00; H02G1/16; Y; Y10; Y10S; Y10S174/00; Y10S174/08; Y10S428/00; Y10S428/913; Y10T; Y10T156/00; Y10T156/19; Y10T156/1928; Y10T156/1933; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49194; Y10T29/4981; Y10T29/49826; Y10T29/49863; Y10T29/4987; Y10T29/53; Y10T29/53657; Y10T428/00; Y10T428/13; Y10T428/1328; Y10T428/1331; Y10T428/15
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
73 words
A recoverable tubular article comprising: a recoverable tubular sleeve held under tension in a radially expanded condition by an essentially tubular restraint disposed about and in bonded relationship to the radially outward exterior of said sleeve; said restraint being capable of being mechanically segmented so as to release said tension and permit recovery of said sleeve and being sufficiently rigid in its unsegmented condition to maintain said sleeve in the expanded, recoverable condition.
Claim 2
Dependent Claim
73 words
A recoverable tubular article comprising: a recoverable tubular sleeve held under tension in a radially expanded condition by an essentially tubular restraint disposed about and in bonded relationship to the radially outward exterior of said sleeve; said restraint being capable of being mechanically segmented so as to release said tension and permit recovery of said sleeve and being sufficiently rigid in its unsegmented condition to maintain said sleeve in the expanded, recoverable condition.
Claim 3
Dependent Claim
81 words
A recoverable tubular article comprising: a recoverable tubular sleeve held under tension in a radially expanded condition by an essentially tubular restraint disposed about and in bonded relationship to the radially outward exterior of said sleeve; said restraint having weakened portions such that it is capable of being mechanically segmented by peeling so as to release said tension and permit recovery of said sleeve and being sufficiently rigid in its unsegmented condition to maintain said sleeve in the expanded, recoverable condition.
Claim 4
Dependent Claim
81 words
A recoverable tubular article comprising: a recoverable tubular sleeve held under tension in a radially expanded condition by an essentially tubular restraint disposed about and in bonded relationship to the radially outward exterior of said sleeve; said restraint having weakened portions such that it is capable of being mechanically segmented by peeling so as to release said tension and permit recovery of said sleeve and being sufficiently rigid in its unsegmented condition to maintain said sleeve in the expanded, recoverable condition.
Claim 5
Dependent Claim
34 words
The article of claim 2 wherein the sleeve comprises an elastomeric material and is held in a radially expanded condition and having an internal diameter greater than the unexpanded internal diameter of the sleeve.
Claim 6
Dependent Claim
24 words
The article of claim 3 wherein the elastomeric material is selected from the group consisting of polychloroprene, ethylene propylene rubber and a silicone rubber.
Claim 7
Dependent Claim
22 words
The article of claim 3 wherein the restraint comprises a material selected from the group consisting of polymeric materials and metallic materials.
Claim 8
Dependent Claim
23 words
The article of claim 5 wherein the restraint is a metallic member and said weakened portions are helical scores on its outer surface.
Claim 9
Dependent Claim
17 words
The article of claim 6 wherein said metallic member is provided with a pullring at one end.
Claim 10
Dependent Claim
17 words
The article of claim 2 wherein the sleeve and the restraint are bonded directly to each other.
Claim 11
Dependent Claim
16 words
The article of claim 2 wherein the sleeve is bonded to the restraint by an adhesive.
Claim 12
Dependent Claim
13 words
The article of claim 9 wherein the adhesive is a hot melt adhesive.
Claim 13
Dependent Claim
20 words
The article of claim 10 wherein the adhesive is a block copolymer comprising units of polytetramethylene ether and polytetramethylene terephthalate.
Claim 14
Dependent Claim
18 words
The article of claim 9 wherein the adhesive has a greater strength in tension than in a peel.
Claim 15
Dependent Claim
13 words
The article of claim 2 wherein said sleeve is a split metallic cylinder.
Claim 16
Dependent Claim
17 words
The article of claim 2 wherein said sleeve is coated on its inner surface with an adhesive.
Claim 17
Dependent Claim
12 words
The article of claim 14 wherein said adhesive is a contact adhesive.
Claim 18
Dependent Claim
17 words
The article of claim 2 wherein the sleeve is coated on its inner surface with a mastic.
Claim 19
Dependent Claim
81 words
A recoverable tubular article comprising: a recoverable tubular sleeve held under tension in a radially expanded condition by an essentially tubular restraint disposed about and in bonded relationship to the radially outward exterior of said sleeve; said restraint being comprised of a frangible material capable of being mechanically segmented by being fractured so as to release said tension and permit recovery of said sleeve and being sufficiently rigid in its unfractured condition to maintain said sleeve in the expanded, recoverable condition.
Claim 20
Dependent Claim
81 words
A recoverable tubular article comprising: a recoverable tubular sleeve held under tension in a radially expanded condition by an essentially tubular restraint disposed about and in bonded relationship to the radially outward exterior of said sleeve; said restraint being comprised of a frangible material capable of being mechanically segmented by being fractured so as to release said tension and permit recovery of said sleeve and being sufficiently rigid in its unfractured condition to maintain said sleeve in the expanded, recoverable condition.
Claim 21
Dependent Claim
34 words
The article of claim 17 wherein the sleeve comprises an elastomeric material and is held in a radially expanded condition and having an internal diameter greater than the unexpanded internal diameter of the sleeve.
Claim 22
Dependent Claim
24 words
The article of claim 18 wherein the elastomeric material is selected from the group consisting of polychloroprene, ethylene propylene rubber and a silicone rubber.
Claim 23
Dependent Claim
10 words
The article of claim 18 wherein the restraint comprises polyvinyl/chloride.
Claim 24
Dependent Claim
17 words
The article of claim 17 wherein the sleeve and the restraint are bonded directly to each other.
Claim 25
Dependent Claim
16 words
The article of claim 17 wherein the sleeve is bonded to the restraint by an adhesive.
Claim 26
Dependent Claim
13 words
The article of claim 22 wherein the adhesive is a hot melt adhesive.
Claim 27
Dependent Claim
18 words
The article of claim 23 wherein the adhesive is a block copolymer comprising units of polytetramethylene/ether and polytetramethylene/terephthalate.
Claim 28
Dependent Claim
17 words
The article of claim 22 wherein the adhesive has a greater strength in tension than in peel.
Claim 29
Dependent Claim
13 words
The article of claim 17 wherein said sleeve is a split metallic cylinder.
Claim 30
Dependent Claim
17 words
The article of claim 17 wherein said sleeve is coated on its inner surface with an adhesive.
Claim 31
Dependent Claim
12 words
The article of claim 27 wherein said adhesive is a contact adhesive.
Claim 32
Dependent Claim
17 words
The article of claim 17 wherein the sleeve is coated on its inner surface with a mastic.
Claim 33
Dependent Claim
12 words
The article of claim 17 wherein said restraint comprises a polymeric material.
Claim 34
Dependent Claim
19 words
The article of claim 17 wherein said restraint is capable of being removed from said sleeve after being fractured.
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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) | 1985-07-12 | 1986-01-11 | 1986-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-12 | 1990-01-11 | 1990-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-12 | 1994-01-11 | 1994-07-13 | $7700.00 | Window Closed / Lapsed |