Patent US3242317A successfully refreshed from Google Patents.
US3787273A
Expired / Lapsed
US
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Low stretch sectional abrasive belts
Assignee: Saint Gobain Abrasives Inc
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Filing: 1971-06-07
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Granted: 1974-01-22
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Expires: 1991-06-07
Abstract
Abstract A relatively heavy woven fabric is provided of such construction and finish that, when used as a backing member for coated abrasive material, a sectional abrasive belt can be manufactured of desirably low stretch characteristics.
Inventors
- 👤 J Okrepkie
- 👤 H Swiatek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:20
CPC Classifications
B; B24; B24D; B24D11/00; B24D11/02; Y; Y10; Y10T; Y10T428/00; Y10T428/18; Y10T428/183; Y10T428/187; Y10T428/24; Y10T428/24355; Y10T428/24372; Y10T428/24405; Y10T442/00; Y10T442/20; Y10T442/2041; Y10T442/2049; Y10T442/2057; Y10T442/2074; Y10T442/2344; Y10T442/30; Y10T442/3179; Y10T442/322; Y10T442/3228; Y10T442/3472; Y10T442/3602; Y10T442/3667
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
77 words
Endless coated abrasive belt in which sections of abrasive material in accordance with claim 1 are adhesively secured together, said sections being in the shape of a parallelogram, the longer sides of the parallelogram being joined together whereby a sectional belt of greater width than the width of coated abrasive material from which the sections are cut is provided, said sectional abrasive belt having no more than about 4 percent elongation at 100 lbs./in. width tensile strength.
Claim 2
Dependent Claim
40 words
In coated abrasive material according to claim 1, said woven fabric backing member including as an impregnant a non-slip agent for providing greater fiber-to-fiber friction, said non-slip agent being applied to the fabric before application of said resinous front size.
Claim 3
Dependent Claim
17 words
In coated abrasive material according to claim 3, said non-slip agent comprising a mixture of hydrogenated resins.
Claim 4
Dependent Claim
19 words
In coated abrasive material according to claim 4, said resinous front size and said adhesive layer each comprising phenol-formaldehyde.
Claim 5
Dependent Claim
48 words
In coated abrasive material according to claim 5, said backing member comprising a cotton fabric of sateen construction having a 4/1 weave, a yarn count of 104 X 60 (warp X fill), and yarn numbers of 17'' s cotton in the warp and 6.5''s cotton in the fill.
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) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |