US3915671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making a porous unsaturated polyester resin bonded grinding tool
Assignee: Resonac Holdings Corp
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Filing: 1974-02-13
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Granted: 1975-10-28
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Expires: 1994-02-13
Abstract
Abstract A porous, cured unsaturated polyester resin bonded grinding tool having very fine pores uniformly dispersed therein is produced by molding a homogeneous mixture comprising abrasive grains, a water-in-oil emulsion of an uncured unsaturated polyester resin and a curing catalyst to form a mold of the intended grinding stone shape, curing the unsaturated polyester resin contained in the mold, and drying the mold to remove the water therefrom.
Inventors
- 👤 Fumio Kagawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:33
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/02; B24D3/20; B24D3/28; B24D3/32; C; C08; C08F; C08F283/00; C08F283/01
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
118 words
A PROCESS FOR MAKING A POROUS, RESIN BONDED GRINDING TOOL, SAID PROCESS COMPRISING MOLDING A HOMOGENEOUS MIXTURE CONSISTING OF ABRASSIVE GRAINS, A WATER-IN-OIL EMULSION OF AN UNCURED UNSATURATED POLYESTER RESIN AND A CURING CATALYST FOR SAID UNSATURATED POLYESTER RESIN, WHEREIN THE WEIGHT RATIO OF WATER-IN-OIL EUMULSION TO ABRASSIVE GRAINS CONTAINED IN SAID HOMOGENEOUS MIXTURE RANGES FROM ABOUT 1:03 TO ABOUT 1:3 AND WHEREN SAID RESIN AND WATER CONTAINED IN THE WATER-INOIL EMULSION ARE MIXD AT A WEIGHT RATIO OF RESIN TO WATER OFF ABOUT 1:0.5 TO ABOUT 1:3 TO FORM A MOLD OF THE INTENDED GRINDING TOOL SHAPE, CUTING SAID UNSATURATED POLYESTER RESIN CONTAINED IN THE MOLD, AND DRYING THE THUS OBTAINED MOLD TO REMOVE THE WATER THEREFROM.
Claim 2
Dependent Claim
118 words
A PROCESS FOR MAKING A POROUS, RESIN BONDED GRINDING TOOL, SAID PROCESS COMPRISING MOLDING A HOMOGENEOUS MIXTURE CONSISTING OF ABRASSIVE GRAINS, A WATER-IN-OIL EMULSION OF AN UNCURED UNSATURATED POLYESTER RESIN AND A CURING CATALYST FOR SAID UNSATURATED POLYESTER RESIN, WHEREIN THE WEIGHT RATIO OF WATER-IN-OIL EUMULSION TO ABRASSIVE GRAINS CONTAINED IN SAID HOMOGENEOUS MIXTURE RANGES FROM ABOUT 1:03 TO ABOUT 1:3 AND WHEREN SAID RESIN AND WATER CONTAINED IN THE WATER-INOIL EMULSION ARE MIXD AT A WEIGHT RATIO OF RESIN TO WATER OFF ABOUT 1:0.5 TO ABOUT 1:3 TO FORM A MOLD OF THE INTENDED GRINDING TOOL SHAPE, CUTING SAID UNSATURATED POLYESTER RESIN CONTAINED IN THE MOLD, AND DRYING THE THUS OBTAINED MOLD TO REMOVE THE WATER THEREFROM.
Claim 3
Dependent Claim
27 words
The process of claim 1 wherein the weight ratio of water-in-oil emulsion to abrasive grains contained in said homogeneous mixture ranges from about 1:0.5 to about 1:1.5.
Claim 4
Dependent Claim
31 words
The process of claim 1 wherein said resin and water contained in the water-in-oil emulsion are mixed at a weight ratio of resin to water of about 1:0.7 to about 1:1.5.
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) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |