US3860478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slitted insulating rigid wall composite
Assignee: Owens Corning
•
Filing: 1972-07-13
•
Granted: 1975-01-14
•
Expires: 1992-07-13
Abstract
Abstract A wall construction for fluid handling devices, especially fluid storage tanks, which is adapted for expansion and contraction, has a moistureproof expansion joint which does not materially weaken the wall construction. The expansion joint includes a slit in a portion of the wall and a shaped expansion member of substantially rigid material overlaying the slit. The member is integrally bonded to the wall on opposite sides of the slit and is shaped to allow for movement of the wall. The expansion joint is particularly suited for insulated tanks having a sandwich construction comprising reinforced plastic layers separated by a layer of polyurethane foam. The expansion member is preferably of glass fiber reinforced plastic.
Inventors
- 👤 David H Bartlow
- 👤 Mark E Greenwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:05
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/66; E04B1/68; E04B1/6809; B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; F; F17; F17C; F17C13/00; F17C13/004; F17C3/00; F17C3/02; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0278; B32B2375/00; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2201/0109; F17C2201/0119; F17C2201/03; F17C2201/032; F17C2201/035; F17C2203/00; F17C2203/01; F17C2203/011; F17C2203/012; F17C2203/03; F17C2203/0304; F17C2203/0329; F17C2203/0333; F17C2203/06; F17C2203/0602; F17C2203/0612; F17C2203/0626; F17C2203/0629; F17C2203/0634; F17C2203/0658; F17C2203/0663; F17C2205/00; F17C2205/01; F17C2205/0153; F17C2205/018; F17C2209/00; F17C2209/21; F17C2209/2154; F17C2209/2163; F17C2260/00; F17C2260/01; F17C2260/011; Y; Y10; Y10S; Y10S220/00; Y10S220/902; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1064; Y10T156/1082; Y10T428/00; Y10T428/20; Y10T428/24; Y10T428/24479; Y10T428/24521; Y10T428/24537; Y10T428/249921; Y10T428/249953; Y10T428/249982; Y10T428/249984
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
147 words
A RIGID COMPOSITE WALL FOR FLUID HANDLING DEVICES WHICH IS ADAPTED FOR EXPANSION AND CONTRACTION, COMPRISING: TWO LAYERS OF FIBER REINFORCED PLASTIC ADHERED TOGETHER BY AN INTERMEDIATE LAYER OF RIGID CELLULAR INSULATION SUCH THAT EXPANSION OR CONTRACTION OF ONE PLASTIC LAYER WILL IMPART A STRESS TO THE OTHER PLASTIC LAYER THROUGH THE CELLULAR LAYER, ONE OF THE PLASTIC LAYERS HAVING A SLIT THROUGH IT EFFECTIVE TO ALLOW IT TO EXPAND OR CONTRACT IN RESPONSE TO EXPANSION OR CONTRACTION OF THE OTHER PLASTIC LAYER; AND A REINFORCED PLASTIC MEMBER OVERLAYING THE SLIT COMPRISING: TWO BASE SECTIONS SPACED ON OPPOSITE SIDES OF THE SLIT AND JOINED TO THE SLIT LAYER OF PLASTIC; AND A BRIDGING PORTION SPACED FROM THE SLIT LAYER AND CONNECTING SAID BASE SECTIONS SUCH THAT THE BASE SECTIONS CAN MOVE TOWARD AND AWAY FROM EACH OTHER IN RESPONSE TO EXPANSION OR CONTRACTION OF THE SLIT LAYER.
Claim 2
Dependent Claim
147 words
A RIGID COMPOSITE WALL FOR FLUID HANDLING DEVICES WHICH IS ADAPTED FOR EXPANSION AND CONTRACTION, COMPRISING: TWO LAYERS OF FIBER REINFORCED PLASTIC ADHERED TOGETHER BY AN INTERMEDIATE LAYER OF RIGID CELLULAR INSULATION SUCH THAT EXPANSION OR CONTRACTION OF ONE PLASTIC LAYER WILL IMPART A STRESS TO THE OTHER PLASTIC LAYER THROUGH THE CELLULAR LAYER, ONE OF THE PLASTIC LAYERS HAVING A SLIT THROUGH IT EFFECTIVE TO ALLOW IT TO EXPAND OR CONTRACT IN RESPONSE TO EXPANSION OR CONTRACTION OF THE OTHER PLASTIC LAYER; AND A REINFORCED PLASTIC MEMBER OVERLAYING THE SLIT COMPRISING: TWO BASE SECTIONS SPACED ON OPPOSITE SIDES OF THE SLIT AND JOINED TO THE SLIT LAYER OF PLASTIC; AND A BRIDGING PORTION SPACED FROM THE SLIT LAYER AND CONNECTING SAID BASE SECTIONS SUCH THAT THE BASE SECTIONS CAN MOVE TOWARD AND AWAY FROM EACH OTHER IN RESPONSE TO EXPANSION OR CONTRACTION OF THE SLIT LAYER.
Claim 3
Dependent Claim
50 words
A composite wall as recited in claim 1, wherein the member and the slit extend a length substantially greater than the width of the member, and wherein the member is sufficiently rigid and of a shape effective to provide stiffness for the wall in the direction parallel to the slit.
Claim 4
Dependent Claim
25 words
A wall construction as recited in claim 1, wherein the slit extends through one of the reinforced plastic layers and into the layer of foam.
Claim 5
Dependent Claim
34 words
A composite wall as recited in claim 1 wherein the base sections of the plastic member are integrally bonded to the slit layer such that the member provides a fluidtight cover over the slit.
Claim 6
Dependent Claim
44 words
A laminated wall as recited in claim 1, wherein the member has a trapezoidal cross section having a plateau spaced from said slit layer, and oppositely inclined sidewalls integral with said plateau and joined to said slit layer on opposite sides of the slit.
Claim 7
Dependent Claim
17 words
A laminated wall as recited in claim 1 wherein the cellular insulating layer is rigid polyurethane foam.
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) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |