US3900102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waterproofing means and method
Assignee: WR Grace and Co
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Filing: 1972-06-05
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Granted: 1975-08-19
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Expires: 1992-06-05
Abstract
Abstract Novel structures suitable for the formation of waterproof and/or adhesive layers on surfaces, particularly of concrete, the structures comprising a sheet-like substrate and contiguous thereto a membrane of a water-proofing pressure-sensitive adhesive. The substrate may be a sheet-like support having the membrane adherent thereto or be in the form of a protective coating which can be physically removed from the membrane without substantial damage thereto. If desired, the structures may be in the form of a roll comprising alternate layers of the membrane and sheet-like substrate, one face thereof being substantially more readily physically separable from the membrane than the other face. The structure may have the membrane entending or extensible by cold flow beyond the edge of the sheet-like support and may have a protective sheet which can be used as a means for applying a roll of the structure.
Inventors
- 👤 John Hurst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:09
CPC Classifications
E; E04; E04D; E04D5/00; E04D5/10; C; C09; C09J; C09J7/00; C09J7/20; C09J7/22; C09J7/24; C09J7/241; E04B; E04B1/00; E04B1/62; E04B1/66; E04B1/665; Y; Y10; Y10S; Y10S428/00; Y10S428/906; Y10T; Y10T428/00; Y10T428/14; Y10T428/1424; Y10T428/1452; Y10T428/24; Y10T428/24752
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
217 words
A PREFORMED FLEXIBLE SHEET-LIKE STRUCTURE SUITABLE FOR APPLICATION TO CONCRETE AS A WATERPROOFING STRUCTURE SAID STRUCTURE BEING IN THE FORM OF A ROLL ALTERNATE LAYERS OF (A) A FLEXIBLE SUPPORT SHEET COMPRISED OF A SYNTHETIC ORGANIC POLYMER SELECTED FROM THE GROUP CONSISTING OF POLYOLEFIN AND POLYVNYL CHLORIDE (B) A WATERPROOF AND WATERPROOFING FLEXIBLE PRESSURE-SENSITIVE ADHESIVE MEMBRANE ADHERED TO ONE FACE OF SAID SUPPORT SHEET SAID ADHESIVE MEMBRANE BEING AT LEAST 0.025 CM THICK AND OF A SELF-HEALING BITUMEN RUBBER COMPOSITION WHEREIN THE RATIO BY WEIGHT OF SAID BITUMEN TO SAID RUBBER IS AT LEAST 75:25 AN EDGE OF SAID MEMBRANE ALONG AT LEAST ONE OF THE EDGES OF SAID SUPPORT SHEET EXTENDING EFFECTIVELY BEYOND THE EDGE OF SAID SUPPORT SHEET SO THAT UNROLLING AND OVERLAPPING OF THE PEFORMED STRUCTURE RESULTS IN A CONTINUOUS MEMBRANE TO-MEMBRANE COHESIVE CONTACT AT THE POINT WHERE THE SUPPORT SHEET OF THE OVERLAPPED STRUCTURE ENDS AND (C) A PROTECTIVE SILICONIZED PAPER SHEET ADHERENT TO AND READILY RELEASABLE FROM THE SURFACE OF SAID ADHESIVE MEMBRANE REMOTE FROM SAID SUPPORT SHEET AND ALSO READILY RELEASABLE FROM THE THE MEMBRANE ON AMARGIN ON ITS FACE REMOTE FROM THE MEMBRANE WHICH MARGIN CORRESPONDS TO THE PORTION OF THE ADHESIVE MEMBRANE EXTENDING BEYOND THE EDGE OF THE SUPPORT SHEET SO THAT THE STRUCTURE MAY BE UNROLLED WITHOUT DAMAGE.
Claim 2
Dependent Claim
217 words
A PREFORMED FLEXIBLE SHEET-LIKE STRUCTURE SUITABLE FOR APPLICATION TO CONCRETE AS A WATERPROOFING STRUCTURE SAID STRUCTURE BEING IN THE FORM OF A ROLL ALTERNATE LAYERS OF (A) A FLEXIBLE SUPPORT SHEET COMPRISED OF A SYNTHETIC ORGANIC POLYMER SELECTED FROM THE GROUP CONSISTING OF POLYOLEFIN AND POLYVNYL CHLORIDE (B) A WATERPROOF AND WATERPROOFING FLEXIBLE PRESSURE-SENSITIVE ADHESIVE MEMBRANE ADHERED TO ONE FACE OF SAID SUPPORT SHEET SAID ADHESIVE MEMBRANE BEING AT LEAST 0.025 CM THICK AND OF A SELF-HEALING BITUMEN RUBBER COMPOSITION WHEREIN THE RATIO BY WEIGHT OF SAID BITUMEN TO SAID RUBBER IS AT LEAST 75:25 AN EDGE OF SAID MEMBRANE ALONG AT LEAST ONE OF THE EDGES OF SAID SUPPORT SHEET EXTENDING EFFECTIVELY BEYOND THE EDGE OF SAID SUPPORT SHEET SO THAT UNROLLING AND OVERLAPPING OF THE PEFORMED STRUCTURE RESULTS IN A CONTINUOUS MEMBRANE TO-MEMBRANE COHESIVE CONTACT AT THE POINT WHERE THE SUPPORT SHEET OF THE OVERLAPPED STRUCTURE ENDS AND (C) A PROTECTIVE SILICONIZED PAPER SHEET ADHERENT TO AND READILY RELEASABLE FROM THE SURFACE OF SAID ADHESIVE MEMBRANE REMOTE FROM SAID SUPPORT SHEET AND ALSO READILY RELEASABLE FROM THE THE MEMBRANE ON AMARGIN ON ITS FACE REMOTE FROM THE MEMBRANE WHICH MARGIN CORRESPONDS TO THE PORTION OF THE ADHESIVE MEMBRANE EXTENDING BEYOND THE EDGE OF THE SUPPORT SHEET SO THAT THE STRUCTURE MAY BE UNROLLED WITHOUT DAMAGE.
Claim 3
Dependent Claim
12 words
The structure of claim 1 wherein said organic polymer is a polyolefin.
Claim 4
Dependent Claim
19 words
The structure of claim 1 wherein the roll is formed so that the protective sheet is on the outside.
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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) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |