US3574313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wraparound closure sleeve
Assignee: Raychem Corp
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Filing: 1968-10-30
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Granted: 1971-04-13
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Expires: 1988-10-30
Abstract
Abstract A closure sleeve for pipes or the like constructed from a piece of independently dimensionally heat unstable material, that is, material which will return to its original shape and dimensions upon application of heat alone. The sleeve is split and provided along one edge with a plurality of preshrunk tabs which are folded back over the sleeve. A plurality of corresponding slots are formed adjacent the other edge of the sleeve and the material of the other edge folded back over the slots. To install the closure member, the piece of material is roller into tubular form and the tabs inserted into the slots and the part then heat recovered.
Inventors
- 👤 Ken Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:12
CPC Classifications
F; F16; F16L; F16L47/00; F16L47/20; F16L47/22; B; B29; B29C; B29C61/00; B29C61/06; B29C61/10; Y; Y10; Y10S; Y10S174/00; Y10S174/08
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
98 words
A heat recoverable closure member comprising an elongated independently dimensionally heat unstable member having a pair of edge portions which can be brought into adjacency to form a tubular member, a first of said edges having a plurality of tab means formed thereon, said tab means being folded back over said member, said member having a plurality of slots formed adjacent the other edge portion thereof for receiving said tab means and retaining said member in tubular shape, in closure operation the free end portioNs of said tab means abutting the interior surface of said other edge portion.
Claim 2
Dependent Claim
98 words
A heat recoverable closure member comprising an elongated independently dimensionally heat unstable member having a pair of edge portions which can be brought into adjacency to form a tubular member, a first of said edges having a plurality of tab means formed thereon, said tab means being folded back over said member, said member having a plurality of slots formed adjacent the other edge portion thereof for receiving said tab means and retaining said member in tubular shape, in closure operation the free end portioNs of said tab means abutting the interior surface of said other edge portion.
Claim 3
Dependent Claim
22 words
The member of claim 1 wherein said member is provided with a flap adjacent said other edge portion and covering said slots.
Claim 4
Dependent Claim
11 words
The member of claim 1 wherein said tab means are prerecovered.
Claim 5
Dependent Claim
122 words
A heat recoverable closure comprising a piece of independently dimensionally heat unstable material having a pair of edge portions, a plurality of tabs being formed along one of said edge portions, said tabs being folded back over said piece of material, the other edge portion of said piece of material being folded back to form a flap, said piece of material having a series of slots formed therein adjacent said flap, said tab means being inserted into corresponding slots to form said piece of material in tubular shape, said flap serving to maintain said tab means in said slots during heat recovery of said member, the free end portions of said tab means abutting the interior surface of said other edge portion.
Claim 6
Dependent Claim
122 words
A heat recoverable closure comprising a piece of independently dimensionally heat unstable material having a pair of edge portions, a plurality of tabs being formed along one of said edge portions, said tabs being folded back over said piece of material, the other edge portion of said piece of material being folded back to form a flap, said piece of material having a series of slots formed therein adjacent said flap, said tab means being inserted into corresponding slots to form said piece of material in tubular shape, said flap serving to maintain said tab means in said slots during heat recovery of said member, the free end portions of said tab means abutting the interior surface of said other edge portion.
Claim 7
Dependent Claim
19 words
The member of claim 4 wherein said tab means are heat recovered prior to being inserted in said slots.
Claim 8
Dependent Claim
19 words
The member of claim 4 wherein the inner surface of said piece of material is covered with sealing material.
Claim 9
Dependent Claim
109 words
A heat recoverable closure member comprising an elongated independently dimensionally heat unstable member having a pair of edges which can be brought into adjacency to form a tubular member, a first of said edges having a plurality of tab means formed thereon, said tab means being folded back over said member, said member having a plurality of slots formed adjacent the other edge thereof for receiving said tab means and retaining said member in tubular shape, said member being provided with a flap adjacent said other edge and covering said slots, that surface of said member which in closure operation is the inner surface being coated with sealing material.
Claim 10
Dependent Claim
109 words
A heat recoverable closure member comprising an elongated independently dimensionally heat unstable member having a pair of edges which can be brought into adjacency to form a tubular member, a first of said edges having a plurality of tab means formed thereon, said tab means being folded back over said member, said member having a plurality of slots formed adjacent the other edge thereof for receiving said tab means and retaining said member in tubular shape, said member being provided with a flap adjacent said other edge and covering said slots, that surface of said member which in closure operation is the inner surface being coated with sealing material.
References Cited (Backward Citations)
US3379218A
Cited
US3360894A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-12 | 1974-10-12 | 1975-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-12 | 1978-10-12 | 1979-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-12 | 1982-10-12 | 1983-04-13 | $7700.00 | Window Closed / Lapsed |