US3557749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Immersion apparatus
Assignee: Individual
•
Filing: 1969-03-12
•
Granted: 1971-01-26
•
Expires: 1989-03-12
Abstract
Abstract Immersion-coating apparatus having the work holder depending from the immersion vat cover. The holder is a part of the substrate heating and cooling means. A vertically traveling supply tank feeds and drains the immersion vat by variation in the hydrostatic head.
Inventors
- 👤 George Farago
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:25
CPC Classifications
B; B05; B05C; B05C3/00; B05C3/02; B05C3/09; B05C11/00; B05C11/11; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7498
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
46 words
The apparatus as claimed in claim 1 comprising electrical means to lower the supply tank from its upper most position at a relatively slow uniform rate whereby to withdraw the coating material from the surface of the object and leave a uniform layer on the object.
Claim 2
Dependent Claim
25 words
The apparatus as defined in claim 1 comprising pneumatic means for lowering the supply chamber from its uppermost position at a relatively slow, uniform rate.
Claim 3
Dependent Claim
25 words
The apparatus as defined in claim 1 comprising hydraulic means for lowering the supply chamber from its uppermost position at a relatively slow, uniform rate.
Claim 4
Dependent Claim
29 words
The apparatus as defined in claim 1, wherein the heating means including said metal means comprises an electrical heating element to raise the temperature in said object through conduction.
Claim 5
Dependent Claim
25 words
The apparatus as defined in claim 1, wherein said heating means includes a H.F. induction coil whereby to heat said metal means through Eddy current.
Claim 6
Dependent Claim
21 words
The apparatus as defined in claim 1, wherein said heating means includes infrared heating means whereby to heat said metal means.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
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Cited
US3213825A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |