Patent US3999919A successfully refreshed from Google Patents.
US3999919A
Expired / Lapsed
US
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Apparatus for continuously producing resinoid wheels
Assignee: Individual
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Filing: 1975-03-20
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Granted: 1976-12-28
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Expires: 1995-03-20
Abstract
Abstract An abrasive composition prepared by kneading abrasive grains and a binder together, with addition of a filler when desired, is molded into a block, which is heated by a high-frequency wave heater and then passed between multiple pairs of rolls and thereby rolled into a sheet. Circular pieces are blanked out from the rolled sheet and subsequently baked to continuously produce resinoid wheels.
Inventors
- 👤 Heijiro Fukuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:51
CPC Classifications
B; B24; B24D; B24D18/00; C; C09; C09K; C09K3/00; C09K3/14
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
113 words
In an apparatus for continuously producing resinoid wheels containing a kneader for kneading a granular resinoid abrasive composition, a rolling machine downstream of said kneader for rolling the kneaded composition by multiple pairs of rolls, a blanking press downstream of said rolling means for blanking out a circular piece from the rolled sheet and means downstream of said blanking press for baking the circular piece, the improvement comprising: block molding machine means disposed subsequent to the kneader for molding the granular kneaded composition into a block; and high frequency wave heater means disposed after said block molding machine means and before said rolling machine, for heating the molded block with high frequency waves.
Claim 2
Dependent Claim
113 words
In an apparatus for continuously producing resinoid wheels containing a kneader for kneading a granular resinoid abrasive composition, a rolling machine downstream of said kneader for rolling the kneaded composition by multiple pairs of rolls, a blanking press downstream of said rolling means for blanking out a circular piece from the rolled sheet and means downstream of said blanking press for baking the circular piece, the improvement comprising: block molding machine means disposed subsequent to the kneader for molding the granular kneaded composition into a block; and high frequency wave heater means disposed after said block molding machine means and before said rolling machine, for heating the molded block with high frequency waves.
Claim 3
Dependent Claim
44 words
The improvement to the apparatus as set forth in claim 1 wherein a terminal pair of rolls of the rolling machine are coated with at least one soft material selected from the group consisting of rubber, elastic synthetic resin, copper, lead and soft zinc.
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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) | 1979-12-28 | 1980-06-28 | 1980-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-28 | 1984-06-28 | 1984-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-28 | 1988-06-28 | 1988-12-28 | $7700.00 | Window Closed / Lapsed |