US4292262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic material processing
Assignee: Individual
•
Filing: 1979-06-28
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Granted: 1981-09-29
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Expires: 1999-06-28
Abstract
Abstract An illustrative embodiment of the invention provides a technique for applying the deep heat capabilities of microwave energy to the problems of ceramic ware production. A plaster-of-paris mold, filled with "slip" is exposed to microwave energy to produce a "green body" in a few minutes. After excess "slip" is decanted and the "green body" is exposed, the mold is dried through microwave heating, weighed and then brought up to the proper degree of moisture by spraying and weighting. The "green body", moreover, after finishing is further dried through microwave heating.
Inventors
- 👤 Leo W. Tobin, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:26
CPC Classifications
B; B28; B28B; B28B1/00; B28B1/26
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
118 words
A method for producing ceramic ware from slip that contains water, comprising the steps of: a. pouring the slip into an optimally moistened porous mold having a predetermined overall weight; b. forming a green body within the mold by i. a single application of microwave energy to the combination of the mold and slip to cake the slip at the mold surface and ii. thereafter setting up the cake in ambient air without the application microwave energy; c. decanting the excess slip from the mold; d. removing the mold from the green body; e. weighing the mold; and f. adding moisture to the mold to obtain said predetermined overall weight whereby the mold is optimally moistened for reuse.
Claim 2
Independent Claim
118 words
A method for producing ceramic ware from slip that contains water, comprising the steps of: a. pouring the slip into an optimally moistened porous mold having a predetermined overall weight; b. forming a green body within the mold by i. a single application of microwave energy to the combination of the mold and slip to cake the slip at the mold surface and ii. thereafter setting up the cake in ambient air without the application microwave energy; c. decanting the excess slip from the mold; d. removing the mold from the green body; e. weighing the mold; and f. adding moisture to the mold to obtain said predetermined overall weight whereby the mold is optimally moistened for reuse.
Claim 3
Dependent Claim
31 words
The method according to claim 1, further comprising the step of applying microwave energy to the combination of cake and mold after decanting the excess slip and before removing the mold.
Claim 4
Dependent Claim
26 words
The method according to claim 1 or claim 2, further comprising the step of applying microwave energy to the green body after removal from the mold.
References Cited (Backward Citations)
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US3673288A
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US3935060A
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US4163140A
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US4126651A
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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) | 1984-09-28 | 1985-03-30 | 1985-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-28 | 1989-03-30 | 1989-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-28 | 1993-03-30 | 1993-09-29 | $7700.00 | Window Closed / Lapsed |