Patent US3636662A successfully refreshed from Google Patents.
US3636662A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit board cleaning machine
Assignee: Individual
•
Filing: 1969-12-10
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Granted: 1972-01-25
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Expires: 1989-12-10
Abstract
Abstract A circuit board cleaning machine having a roller conveyor adapted to convey the printed circuit boards to be cleaned, first into contact with a nonwoven, mineral-impregnated nylon brush which is run wet, then through a rinsing chamber, and then through a drying area. The brush is maintained sufficiently wet to form a hydroxide coating on the printed circuit board and to prevent the brush from liquefying during cleaning operation.
Inventors
- 👤 Paul Donald Maca
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:39
CPC Classifications
B; B24; B24B; B24B29/00; B24B29/005; H; H05; H05K; H05K3/00; H05K3/22; H05K3/26; H05K2203/00; H05K2203/02; H05K2203/0257; H05K2203/07; H05K2203/0779; H05K2203/0786; H05K2203/15; H05K2203/1509
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
18 words
The apparatus of claim 1 further characterized in that said nylon brush means is impregnated with silicon carbide.
Claim 2
Dependent Claim
18 words
The apparatus of claim 1 further characterized in that said nylon brush means is impregnated with aluminum oxide.
Claim 3
Dependent Claim
34 words
The apparatus of claim 1 further characterized by and including means for spraying rinse fluid onto said circuit boards to remove residue, and means for drying said boards prior to discharge from said apparatus.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |