US3793076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Handling working pieces in liquids in dental technology
Assignee: DEUTSCHE GOLD U SILBER SCHEIDEANSTALT DT
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Filing: 1972-09-22
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Granted: 1974-02-19
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Expires: 1992-09-22
Abstract
Abstract Work pieces are treated in pickling liquids especially in dental technology and gold and silver forging for deoxidation purposes. The workpieces are arranged in a removable container swingingly mounted on the cover of the bath apparatus. This avoids the necessity of using material handling equipment such as forceps and tongs.
Inventors
- 👤 H Lea
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:33
CPC Classifications
A; A61; A61C; A61C13/00; A61C13/20; B; B08; B08B; B08B3/00; B08B3/04; C; C23; C23G; C23G3/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
51 words
A process according to claim 1 wherein openings are present in the bottom portion of said second container, said opening being smaller than the smallest dimension of said workpieces and said process inclUdes passing pickling liquid through said openings from the bath into the second container and back into the bath.
Claim 2
Dependent Claim
36 words
A process according to claim 1 wherein the bottom side of the cover is conical and said process comprises condensing vapors from said pickling bath on said conical bottom side and returning them to the bath.
Claim 3
Dependent Claim
20 words
A process according to claim 1 comprising the subsequent step of rinsing the workpieces in said second container with water.
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) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |