US5098753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-shrinkable article
Assignee: Bowthorpe Hellerman Ltd
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Filing: 1990-05-29
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Granted: 1992-03-24
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Expires: 2010-05-29
Abstract
Abstract A heat shrinkable tubular article e.g. for screening an electrical connector, is provided over a surface thereof with an electrically conductive continuous coating of substantially pure indium. Upon recovery of the article, the indium coating remains continuous and adhered to the surface of the article.
Inventors
- 👤 Nigel J. Gregory
- 👤 Michael J. Stevens
- 👤 Peter I. Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:20
CPC Classifications
H; H01; H01R; H01R4/00; H01R4/70; H01R4/72; H01R4/726; Y; Y10; Y10S; Y10S174/00; Y10S174/08; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12681; Y10T428/13; Y10T428/1328
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
52 words
A heat-shrinkable tubular article provided with an inner surface having an electrically conductive continuous coating of indium having a melting point of 156° C., wherein said tubular article can be heated to a temperature of about 145°0 C. to 160° C. for recovery, and upon recovery, the indium coating deforms without cracking.
Claim 2
Dependent Claim
52 words
A heat-shrinkable tubular article provided with an inner surface having an electrically conductive continuous coating of indium having a melting point of 156° C., wherein said tubular article can be heated to a temperature of about 145°0 C. to 160° C. for recovery, and upon recovery, the indium coating deforms without cracking.
Claim 3
Dependent Claim
39 words
A heat-shrinkable tubular article as claimed in claim 1, in which a priming layer is disposed over said surface and said indium coating is disposed over said priming layer, said priming layer being thin compared with the indium coating.
Claim 4
Dependent Claim
18 words
A heat-shrinkable tubular article as claimed in claim 2, in which the priming layer comprises a polymeric material.
Claim 5
Dependent Claim
17 words
A heat-shrinkable tubular article as claimed in claim 3, in which said polymeric material comprises polyvinyl acetate.
Claim 6
Dependent Claim
23 words
A heat-shrinkable tubular article as claimed in claim 3, in which said polymeric material priming layer has a thickness up to 50 microns.
Claim 7
Dependent Claim
18 words
A heat-shrinkable tubular article as claimed in claim 2, in which the priming layer comprises a precious metal.
Claim 8
Dependent Claim
23 words
A heat-shrinkable tubular article as claimed in claim 6, in which the precious metal priming layer has a thickness of substantially 1 micron.
Claim 9
Dependent Claim
25 words
A heat-shrinkable tubular article as claimed in claim 1, in which said indium coating has a thickness in the range of 0.2 to 2 mm.
Claim 10
Dependent Claim
24 words
A heat-shrinkable tubular article as claimed in claim 8 in which said indium coating has a thickness in the range 0.3 to 0.8 mm.
Claim 11
Independent Claim
74 words
A method of forming a heat-shrinkable tubular article provided with an inner surface, comprising taking an expanded heat-shrinkable tubular article and then applying indium having a melting point of 156° C. to the inner surface of said article to form an electrically conductive continuous coating therein, wherein said tubular article can be heated to a temperature of about 145°0 C. to 160° C. for recovery, and upon recovery, the indium coating deforms without cracking.
Claim 12
Independent Claim
74 words
A method of forming a heat-shrinkable tubular article provided with an inner surface, comprising taking an expanded heat-shrinkable tubular article and then applying indium having a melting point of 156° C. to the inner surface of said article to form an electrically conductive continuous coating therein, wherein said tubular article can be heated to a temperature of about 145°0 C. to 160° C. for recovery, and upon recovery, the indium coating deforms without cracking.
Claim 13
Dependent Claim
27 words
A method as claimed in claim 10, comprising the step of applying a priming layer to said surface of the article before the indium coating is applied
Claim 14
Dependent Claim
28 words
A method as claimed in claim 11, in which said priming layer comprises a polymeric material which is applied in the form of an emulsion and then dried.
Claim 15
Dependent Claim
21 words
A method as claimed in claim 11, in which said priming layer comprises a precious metal which is applied by sputter-coating.
References Cited (Backward Citations)
US4766267A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-03-24 | 1995-09-23 | 1996-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-24 | 1999-09-23 | 2000-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-24 | 2003-09-23 | 2004-03-24 | $7700.00 | Window Closed / Lapsed |