US4595615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe insulation for cold weather applications
Assignee: GTA NHT Inc
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Filing: 1984-10-05
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Granted: 1986-06-17
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Expires: 2004-10-05
Abstract
Abstract An insulation system for pipes which includes segments of fiberglass insulation surrounding the pipe and tape sealing abutting ends of the segments of insulation. The tape is a laminated tape which includes a layer of paper, a layer of fiberglass, a layer of foil and a pressure sensitive acrylic adhesive. The adhesive is an isooctyl acrylate polymer which contains no fillers, except for a cross linker. The tape may be applied at temperatures ranging from -17° F. to 158° F.
Inventors
- 👤 Lewis S. Cohen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:52
CPC Classifications
F; F16; F16L; F16L59/00; F16L59/02; F16L59/029; B; B32; B32B; B32B15/00; B32B15/04; B32B15/12; B32B15/14; B32B15/20; B32B27/00; B32B27/06; B32B27/10; B32B27/36; B32B29/00; B32B29/02; B32B29/06; B32B5/00; B32B5/02; B32B5/024; B32B7/00; B32B7/04; B32B7/06; B32B7/12; C; C09; C09J; C09J7/00; C09J7/20; C09J7/22; C09J7/29; B32B2250/00; B32B2250/03; B32B2250/04; B32B2255/00; B32B2255/06; B32B2255/10; B32B2255/20; B32B2255/205; B32B2262/00; B32B2262/10; B32B2262/101; B32B2307/00; B32B2307/30; B32B2307/304; B32B2307/70; B32B2307/718; B32B2307/724; B32B2307/7242; B32B2307/732; B32B2307/748; B32B2405/00; B32B2581/00; B32B2597/00; C09J2301/00; C09J2301/10; C09J2301/12; C09J2301/122; C09J2301/30; C09J2301/302; C09J2400/00; C09J2400/10; C09J2400/16; C09J2400/163; C09J2400/20; C09J2400/26; C09J2400/263; C09J2400/28; C09J2400/283; C09J2433/00; C09J2467/00; C09J2467/006; Y; Y10; Y10S; Y10S138/00; Y10S138/01; Y10S138/02; Y10S428/00; Y10S428/906; Y10T; Y10T428/00; Y10T428/13; Y10T428/1303; Y10T428/131; Y10T428/1314; Y10T428/14; Y10T428/1414; Y10T428/1438; Y10T428/19; Y10T428/192; Y10T428/197; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/269; Y10T428/27; Y10T428/273; Y10T428/28; Y10T428/2804; Y10T428/2848; Y10T428/2852; Y10T428/2857; Y10T428/2878; Y10T428/2891
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
144 words
An insulation system for a pipe comprising: a first segment of insulation wrapped about the pipe and having a first end; a second segment of insulation wrapped about the pipe, said second segment of insulation having an end adjacent to and abutting with said first end of said first segment; and means for sealing the space between said first end of said first segment and said end of said second segment, said sealing means comprising the following layers: a layer of paper; a layer of woven fiberglass yarns adhesively secured to one side of said paper layer; a metallized layer secured by a laminating adhesive to said fiberglass layer; and a layer of pressure sensitive, isooctyl acrylate adhesive disposed on said metallized layer, said adhesive being approximately a 100% acrylate compound and having a solvent content of no greater than one half of 1%.
Claim 2
Dependent Claim
144 words
An insulation system for a pipe comprising: a first segment of insulation wrapped about the pipe and having a first end; a second segment of insulation wrapped about the pipe, said second segment of insulation having an end adjacent to and abutting with said first end of said first segment; and means for sealing the space between said first end of said first segment and said end of said second segment, said sealing means comprising the following layers: a layer of paper; a layer of woven fiberglass yarns adhesively secured to one side of said paper layer; a metallized layer secured by a laminating adhesive to said fiberglass layer; and a layer of pressure sensitive, isooctyl acrylate adhesive disposed on said metallized layer, said adhesive being approximately a 100% acrylate compound and having a solvent content of no greater than one half of 1%.
Claim 3
Dependent Claim
24 words
An insulation system as recited in claim 1 wherein said adhesive layer remains tacky in a temperature range from -17° F. to +158° F.
Claim 4
Dependent Claim
24 words
An insulation system as recited in claim 1 wherein said adhesive layer has a thickness in the range of about 1.5 to 2.0 mils.
Claim 5
Dependent Claim
24 words
An insulation system as recited in claim 1 wherein said adhesive layer has a coating weight of about 1.27 dry ounces per square yard.
Claim 6
Dependent Claim
17 words
An insulation system as recited in claim 1 wherein said metallized layer is a metallized polyester film.
Claim 7
Dependent Claim
30 words
An insulation system as recited in claim 1 wherein said metallized layer is a layer of aluminum foil having a thickness in the range of about 0.00035 to 0.0007 inches.
Claim 8
Dependent Claim
20 words
An insulation system as recited in claim 1 further comprising a barrier coat on one side of said metallized layer.
Claim 9
Dependent Claim
19 words
An insulation system as recited in claim 1 wherein said fiberglass layer comprises a tri-directional weave of fiberglass yarns.
Claim 10
Dependent Claim
52 words
An insulation system as recited in claim 1 wherein said first and said second insulation segments comprise the following layers: a layer of paper; a layer of woven fiberglass yarns adhesively laminated to one side of said paper layer; and a metallized layer adhesively laminated to one side of said fiberglass layer.
Claim 11
Dependent Claim
125 words
An insulation system as recited in claim 1 wherein said adhesive layer is formed by a method comprising the steps of: applying an isooctyl acrylate polymer adhesive dissolved in a solvent solution to one side of said metallized layer in a thickness sufficient to produce a coating weight of about 1.27 dry ounces per square yard when cured; passing said sealing means through a first heating zone in which the temperature is gradually raised from ambient temperature to 150° F., said first passing step lasting about one half to one minute; and passing said sealing means through a second heating zone in which the temperature is gradually increased to 270° F., said second passing step having a duration of about one half to one minute.
Claim 12
Dependent Claim
95 words
A tape for sealing the space between abutting ends of adjoining segments of pipe insulation comprising: an exterior layer of paper; a layer of woven fiberglass yarns adhesively secured to one side of said paper layer; a barrier coat secured to said fiberglass layer; a metallized layer adhesively secured to said barrier coat; and a layer of pressure sensitive, isooctyl acrylate polymer adhesive disposed on an outwardly facing side of said metallized layer, said adhesive being approximately a 100% acrylate compound and having a solvent content of less than one half of one per cent.
Claim 13
Dependent Claim
95 words
A tape for sealing the space between abutting ends of adjoining segments of pipe insulation comprising: an exterior layer of paper; a layer of woven fiberglass yarns adhesively secured to one side of said paper layer; a barrier coat secured to said fiberglass layer; a metallized layer adhesively secured to said barrier coat; and a layer of pressure sensitive, isooctyl acrylate polymer adhesive disposed on an outwardly facing side of said metallized layer, said adhesive being approximately a 100% acrylate compound and having a solvent content of less than one half of one per cent.
Claim 14
Dependent Claim
31 words
A tape as recited in claim 11 wherein said adhesive layer has a thickness of about 1.5 to 2.0 mils, and a coating weight of 1.27 dry ounces per square yard.
Claim 15
Dependent Claim
18 words
A tape as recited in claim 11 wherein said adhesive has a Williams plasticity of about 2.6 mm.
Claim 16
Dependent Claim
24 words
A tape as recited in claim 11 wherein said metallized layer is a layer of aluminum foil having a thickness of about 0.00035 inches.
Claim 17
Dependent Claim
16 words
A tape as recited in claim 11 wherein said metallized layer is a metallized polyester film.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-06-16 | 1989-12-16 | 1990-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-16 | 1993-12-16 | 1994-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-16 | 1997-12-16 | 1998-06-17 | $7700.00 | Window Closed / Lapsed |