US3861981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable etching system for holes drilled in metals
Assignee: United States Department of the Air Force
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Filing: 1973-01-24
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Granted: 1975-01-21
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Expires: 1993-01-24
Abstract
Abstract A system for controlling the flow of etchant and rinse through metal openings including containers, a manifold, tubing and an adapter for allowing an even regulated flow of liquid through the opening.
Inventors
- 👤 Kenneth Loo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:35
CPC Classifications
C; C23; C23F; C23F1/00; C23F1/08
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
100 words
A system for etching holes drilled in metals comprising a first container means for storing an etching solution; a second container means for storing a rinse solution; a manifold; manifold screw clamps for controlling the flow of fluid; tubing means connecting said first and second container means to the manifold screw clamps; tubing means connecting said manifold screw clamps to the manifold; adapter means; tubing means connecting the said adapter to the manifold; a third container means for collecting the said etching solution and said rinse solution, and tubing means connecting the adapter means to the said third container means.
Claim 2
Independent Claim
100 words
A system for etching holes drilled in metals comprising a first container means for storing an etching solution; a second container means for storing a rinse solution; a manifold; manifold screw clamps for controlling the flow of fluid; tubing means connecting said first and second container means to the manifold screw clamps; tubing means connecting said manifold screw clamps to the manifold; adapter means; tubing means connecting the said adapter to the manifold; a third container means for collecting the said etching solution and said rinse solution, and tubing means connecting the adapter means to the said third container means.
Claim 3
Dependent Claim
16 words
A system for etching holes according to claim 1 wherein the manifold includes a single output.
Claim 4
Dependent Claim
17 words
A system for etching holes according to claim 1 wherein the manifold includes a plurality of outputs.
Claim 5
Dependent Claim
103 words
A system according to claim 1 wherein the adapter means includes: a male member and a female member; said male member further including means adapted for receiving tubing, an elongated means extending beyond the body of the male member having an enlarged, threaded portion at one end thereof, and a series of elongated openings surrounding said extension in the male member to allow for the passage of fluids; said female member further including means adapted to receive tubing and a recessed portion, threaded and adapted to receive the male extension including a plurality of elongated openings to allow for the passage of fluids.
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) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |