US3839079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lagging cloth woven of staple glass fiber, and containing rewettable adhesive
Assignee: Acadia Elastomers Corp
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Filing: 1972-06-15
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Granted: 1974-10-01
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Expires: 1992-06-15
Abstract
Abstract A lagging cloth woven of slivers of long staple glass fibers or yarns of continuous filament glass fibers, and containing a water activatable adhesive composition impregnated therethrough. The fiber glass cloth contains about 15 percent to 35 percent by weight of adhesive composition impregnant solids, the adhesive composition being at least 72 percent by weight bentonite clay and also containing alkali metal silicate in a ratio of 1 part by weight alkali metal silicate to 30-85 parts by weight of bentonite clay. Preferably the adhesive composition consists essentially of 72 percent to 85 percent by weight of bentonite clay, 1 percent to 2.4 percent by weight of alkali metal silicate and the balance being short asbestos or glass fibers.
Inventors
- 👤 I Barnett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:30
CPC Classifications
C; C09; C09J; C09J1/00; C09J1/02; B; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/10; B29C70/16; B29C70/22; C04; C04B; C04B40/00; C04B40/06; Y; Y10; Y10S; Y10S106/00; Y10S106/04; Y10S138/00; Y10S138/02; Y10T; Y10T442/00; Y10T442/20; Y10T442/2738; Y10T442/2926; Y10T442/2992
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
77 words
A REWETTABLE LAGGING CLOTH CONSISTING ESSENTIALLY OF A LOW DENSITY GLASS FIBER CLOTH IMPREGNATED THERETHROUGH WITH A REWETTABLE ADHESIVE COMPOSITION, SAID GLASS FIBER CLOTH CONTAINING ABOUT 15 PERCENT TO 35 PERCENT BY WEIGHT OF ADHESIVE COMPOSITION IMPREGNANT SOLIDS, SAID ADHESIVE COMPOSITION BEING AT LEAST 72 PERCENT BY WEIGHT BENTONITE CLAY AND SAID ADHESIVE COMPOSITION ALSO CONTAINING ALKALI METAL SILICATE IN A RATIO OF 1 PART BY WEIGHT ALKALI METAL SILICATE TO 30-85 PARTS BY WEIGHT BENTONITE CLAY.
Claim 2
Dependent Claim
77 words
A REWETTABLE LAGGING CLOTH CONSISTING ESSENTIALLY OF A LOW DENSITY GLASS FIBER CLOTH IMPREGNATED THERETHROUGH WITH A REWETTABLE ADHESIVE COMPOSITION, SAID GLASS FIBER CLOTH CONTAINING ABOUT 15 PERCENT TO 35 PERCENT BY WEIGHT OF ADHESIVE COMPOSITION IMPREGNANT SOLIDS, SAID ADHESIVE COMPOSITION BEING AT LEAST 72 PERCENT BY WEIGHT BENTONITE CLAY AND SAID ADHESIVE COMPOSITION ALSO CONTAINING ALKALI METAL SILICATE IN A RATIO OF 1 PART BY WEIGHT ALKALI METAL SILICATE TO 30-85 PARTS BY WEIGHT BENTONITE CLAY.
Claim 3
Dependent Claim
47 words
The rewettable lagging cloth of claim 1 wherein said adhesive composition consists essentially of, in percentages by weight, bentonite clay - 72 to 85 percent and alkali metal silicate - 1 to 2.4 percent with the remaining portion of the composition comprising short asbestos or glass fibers.
Claim 4
Dependent Claim
31 words
The rewettable lagging cloth of claim 1 wherein said adhesive composition comprises in percentages by weight, bentonite clay -96.8 to 98.8 percent and alkali metal silicate - 1.2 to 3.2 percent.
Claim 5
Dependent Claim
25 words
The rewettable lagging cloth of claim 1 wherein the glass cloth contains approximately 20 percent to 30 percent by weight of adhesive composition impregnant solids.
Claim 6
Dependent Claim
19 words
The rewettable lagging cloth of claim 1 wherein the alkali metal silicate of the adhesive composition is sodium silicate.
Claim 7
Dependent Claim
20 words
The rewettable lagging cloth of claim 1 wherein said cloth is woven of glass slivers comprising long staple glass fibers.
Claim 8
Dependent Claim
16 words
The rewettable lagging cloth of claim 6 wherein the glass fiber cloth is of plain weave.
Claim 9
Dependent Claim
35 words
The rewettable lagging cloth of claim 7 wherein the glass fiber cloth is of a plain weave of relatively loose construction comprising about five to 10 ends by about five to 10 picks per inch.
Claim 10
Dependent Claim
25 words
The rewettable lagging cloth of claim 8 wherein the glass cloth contains approximately 20 percent to 30 percent by weight of adhesive composition impregnant solids.
Claim 11
Dependent Claim
20 words
The rewettable lagging cloth of claim 1 wherein said cloth is woven of bulked glass yarn of continuous glass filaments.
Claim 12
Dependent Claim
16 words
The rewettable lagging cloth of claim 10 wherein the glass fiber cloth is of plain weave.
Claim 13
Dependent Claim
35 words
The rewettable lagging cloth of claim 11 wherein the glass fiber cloth is of a plain weave of relatively loose construction comprising about five to 10 ends by about five to 10 picks per inch.
Claim 14
Dependent Claim
25 words
The rewettable lagging cloth of claim 12 wherein the glass cloth contains approximately 20 percent to 30 percent by weight of adhesive composition impregnant solids.
References Cited (Backward Citations)
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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) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |