US4915139A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat shrinkable tubing article
Assignee: Essex Solutions USA LLC
•
Filing: 1988-10-17
•
Granted: 1990-04-10
•
Expires: 2008-10-17
Abstract
Abstract A heat deformable tube having a melt liner of noncross-liquid, thermoplastic material, such that upon heating to a temperature high enough to cause the tube to return to its original shape; the melt liner melts and encapsulates the substrate.
Inventors
- 👤 Louis G. Landry
- 👤 Benoit L. Poulin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:00
CPC Classifications
B; B29; B29C; B29C61/00; B29C61/06; B29C61/0608; B29C61/0616; B32; B32B; B32B1/00; B32B1/08; Y; Y10; Y10S; Y10S174/00; Y10S174/08; Y10T; Y10T428/00; Y10T428/13; Y10T428/1328
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
149 words
A unitary expanded fiber reinforced heat recoverable tubular article comprising: a dimensionally expanded heat recoverable tube having an inner surface and an inner dimension, a non-cross linked thermoplastic tube having an outer surface and an outside diameter smaller than the inner diameter of the heat recoverable tube and a braided non-heat recoverable fiber reinforcement positioned between the heat recoverable tube and the thermoplastic tube wherein the braided non-heat recoverable fiber reinforcement is bonded to the heat recoverable tube by the thermoplastic tube at a temperature sufficient to cause the thermoplastic tube to flow through the braided non-heat recoverable fiber reinforcement but insufficient to cause the expanded heat recoverable tube to recover and thereby providing a means to allow the thermoplastic tube to melt and flow at the temperature at which the heat recoverable tube recovers, thereby permitting the heat recoverable tube to move relative to the braided fiber reinforcement.
Claim 2
Dependent Claim
149 words
A unitary expanded fiber reinforced heat recoverable tubular article comprising: a dimensionally expanded heat recoverable tube having an inner surface and an inner dimension, a non-cross linked thermoplastic tube having an outer surface and an outside diameter smaller than the inner diameter of the heat recoverable tube and a braided non-heat recoverable fiber reinforcement positioned between the heat recoverable tube and the thermoplastic tube wherein the braided non-heat recoverable fiber reinforcement is bonded to the heat recoverable tube by the thermoplastic tube at a temperature sufficient to cause the thermoplastic tube to flow through the braided non-heat recoverable fiber reinforcement but insufficient to cause the expanded heat recoverable tube to recover and thereby providing a means to allow the thermoplastic tube to melt and flow at the temperature at which the heat recoverable tube recovers, thereby permitting the heat recoverable tube to move relative to the braided fiber reinforcement.
Claim 3
Dependent Claim
20 words
The article of claim 1 wherein said non-cross linked thermoplastic tube is a copolymer of ethylene vinyl acetate and polyethylene.
Claim 4
Dependent Claim
12 words
The article of claim 2 wherein the fiber reinforcement is glass fiber.
Claim 5
Dependent Claim
22 words
The article of claim 1 wherein said non-cross linked thermoplastic tube has a thickness of about 4 mils to about 40 mils.
References Cited (Backward Citations)
US3184358A
Cited
US3243211A
Cited
US4373554A
Cited
US3253618A
Cited
US3253619A
Cited
US3448182A
Cited
US3582457A
Cited
GB1294665A
Cited
US3861972A
Cited
US4195106A
Cited
US4631098A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-09 | 1993-10-09 | 1994-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-09 | 1997-10-09 | 1998-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-09 | 2001-10-09 | 2002-04-10 | $7700.00 | Window Closed / Lapsed |