Patent US4726974A successfully refreshed from Google Patents.
US4726974A
Expired / Lapsed
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Vacuum insulation panel
Assignee: Union Carbide Industrial Gases Technology Corp
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Filing: 1986-10-08
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Granted: 1988-02-23
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Expires: 2006-10-08
Abstract
Abstract A vacuum insulation panel comprising a defined dual layered enclosure encasing a defined compressed fiberglass substrate which enables easy and effective insulation of large equipment with improved system flexibility and integrity.
Inventors
- 👤 Jeffert J. Nowobilski
- 👤 Arun Acharya
- 👤 Kenneth C. Kather
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:59
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; E; E04; E04C; E04C2/00; E04C2/02; E04C2/26; B32B15/082; B32B15/085; B32B15/09; B32B15/18; B32B15/20; B32B27/00; B32B27/30; B32B27/304; B32B27/32; B32B27/36; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/76; E04B1/78; E04B1/80; E04B1/803; F; F16; F16L; F16L59/00; F16L59/06; F16L59/065; F16L59/14; F16L59/141; F17; F17C; F17C13/00; F17C13/001; F25; F25J; F25J1/00; F25J1/02; F25J1/0243; F25J1/0257; F25J1/0261; F25J3/00; F25J3/02; F25J3/0295; F25J3/04; F25J3/04763; F25J3/04866; F25J3/04945; F25J3/06; F25J3/0695; B32B2307/00; B32B2307/30; B32B2307/304; B32B2311/00; B32B2311/24; B32B2311/30; B32B2323/00; B32B2323/04; B32B2323/10; B32B2327/00; B32B2327/12; B32B2327/18; B32B2367/00; B32B2607/00; F17C2203/00; F17C2203/03; F17C2203/0304; F17C2203/0308; F17C2203/032; F17C2203/0345; F17C2203/035; F17C2203/0358; F17C2203/0391; F17C2221/00; F17C2221/01; F17C2221/011; F17C2221/014; F17C2221/016; F17C2221/03; F17C2221/031; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/0161; F25D; F25D2201/00; F25D2201/10; F25D2201/14; F25J2290/00; F25J2290/30; Y; Y02; Y02A; Y02A30/00; Y02A30/24; Y02A30/242; Y02B; Y02B80/00; Y02B80/10; Y10; Y10T; Y10T428/00; Y10T428/23; Y10T428/231; Y10T428/237; Y10T428/238; Y10T428/239
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
67 words
An insulation panel comprising a sealed evacuated film enclosure said film comprised of at least one layer of plastic and at least one layer of metal laminated together, said seal(s) being at points of plastic to plastic contact, said enclosure encasing adsorbent and a shaped article of compressed fiberglass having fiber diameters not exceeding ten microns, said fibers held together by binder to form a smoothened surface.
Claim 2
Dependent Claim
67 words
An insulation panel comprising a sealed evacuated film enclosure said film comprised of at least one layer of plastic and at least one layer of metal laminated together, said seal(s) being at points of plastic to plastic contact, said enclosure encasing adsorbent and a shaped article of compressed fiberglass having fiber diameters not exceeding ten microns, said fibers held together by binder to form a smoothened surface.
Claim 3
Dependent Claim
20 words
The panel of claim 1 wherein the plastic is tetraphthalate polyester, polytetrafluoroethylene, polyimide, fluorinated ethylene propylene, polyvinylidene chloride or polyethylene.
Claim 4
Dependent Claim
18 words
The panel of claim 1 wherein the metal is aluminum, silver, gold, chromium, nickel, stainless steel or Inconel™.
Claim 5
Dependent Claim
22 words
The panel of claim 1 wherein the dual layered film has a thickness within the range of from 0.5 to 50 mils.
Claim 6
Dependent Claim
22 words
The panel of claim 1 wherein the dual layered film has a thickness within the range of from 2 to 10 mils.
Claim 7
Dependent Claim
22 words
The panel of claim 1 wherein the film comprises two dual layered film sheets which are laminated together at the metal surfaces.
Claim 8
Dependent Claim
16 words
The panel of claim 1 wherein the shaped article is in the shape of a rectangle.
Claim 9
Dependent Claim
17 words
The panel of claim 1 wherein the shaped article is in the shape of a curved surface.
Claim 10
Dependent Claim
24 words
The panel of claim 1 wherein the shaped article has a density within the range of from 3 to 40 pounds per cubic foot.
Claim 11
Dependent Claim
14 words
The panel of claim 1 wherein the fiber diameters do not exceed 5 microns.
Claim 12
Dependent Claim
27 words
The panel of claim 1 wherein the binder is present in the shaped article at a concentration within the range of from 5 to 30 weight percent.
Claim 13
Dependent Claim
21 words
The panel of claim 1 wherein the binder is a phenolic binder, a silicone binder or an inorganic sodium silicate binder.
Claim 14
Dependent Claim
17 words
The panel of claim 1 wherein the shaped article has curvilinear edging essentially completely around its perimeter.
Claim 15
Dependent Claim
26 words
The panel of claim 13 wherein the curvilinear edging is defined by a curvature having a radius within the range of from 1/8 to one inch.
Claim 16
Dependent Claim
22 words
The panel of claim 1 wherein the adsorbent is attached to the shaped article on the intended cold side of the panel.
Claim 17
Dependent Claim
12 words
The panel of claim 1 wherein the adsorbent is hydrophobic molecular sieve.
Claim 18
Dependent Claim
25 words
The panel of claim 1 wherein the sealed enclosure is evacuated to a pressure within the range of from 0.01 to 1000 microns of mercury.
Claim 19
Dependent Claim
18 words
The panel of claim 1 wherein the edges of the dual layered film enclosure are heat sealed together.
Claim 20
Dependent Claim
24 words
The panel of claim 1 additionally comprising two sided adhesive tape or velcro on the outside of the enclosure to facilitate attachment to equipment.
Claim 21
Dependent Claim
99 words
The use of an insulation panel comprising a sealed evacuated film enclosure said film comprised of at least one layer of plastic and at least one layer of metal laminated together, said seal(s) being at points of plastic to plastic contact, said enclosure encasing adsorbent and a shaped article of compressed fiberglass having fiber diameters not exceeding ten microns, said fibers held together by binder to form a smoothened surface to insulate cryogenic equipment wherein the panel is positioned adjacent the cryogenic equipment and the cold side of the panel adjacent said equipment is exposed to a dry gas.
Claim 22
Dependent Claim
99 words
The use of an insulation panel comprising a sealed evacuated film enclosure said film comprised of at least one layer of plastic and at least one layer of metal laminated together, said seal(s) being at points of plastic to plastic contact, said enclosure encasing adsorbent and a shaped article of compressed fiberglass having fiber diameters not exceeding ten microns, said fibers held together by binder to form a smoothened surface to insulate cryogenic equipment wherein the panel is positioned adjacent the cryogenic equipment and the cold side of the panel adjacent said equipment is exposed to a dry gas.
Claim 23
Dependent Claim
12 words
The use of claim 20 wherein the adsorbent is hydrophobic molecular sieve.
Claim 24
Dependent Claim
21 words
The use of claim 20 wherein the adsorbent is attached to the shaped article on the cold side of the panel.
Claim 25
Dependent Claim
10 words
The use claim 20 wherein the dry gas is nitrogen.
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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) | 1991-02-22 | 1991-08-24 | 1992-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-22 | 1995-08-24 | 1996-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-22 | 1999-08-24 | 2000-02-23 | $7700.00 | Window Closed / Lapsed |