Patent US3568692A successfully refreshed from Google Patents.
US3568692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical machining process
Assignee: Bowles Engineering Corp
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Filing: 1967-11-27
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Granted: 1971-03-09
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Expires: 1987-11-27
Abstract
Abstract A fluid amplifier includes a rigid base, a layer of lightabsorptive adhesive overlying a surface of the base and a layer of light-polymerizable plastic bonded to the base by the adhesive; the light-polymerizable material being solid in the unpolymerized state and in the polymerized state having a plurality of channels and nozzles formed therein to define a fluidic element. A cover plate seals the channels and nozzles to complete the element.
Inventors
- 👤 Eric E Metzger
- 👤 George D Hinschelwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:18
CPC Classifications
F; F15; F15C; F15C5/00; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/218; Y10T137/2191; Y10T137/2224
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
14 words
The combination according to claim 1 wherein said angle is not more than 2*.
Claim 2
Dependent Claim
89 words
A pure fluid amplifier or the like comprising a body of light-polymerized material having appropriate channels and nozzles formed therein said amplifier having been formed with a fluid resistor located in one of said channels and comprising a plurality of cylindrical closely spaced stalks of said light-polymerized material, said plurality of stalks extending across said one of said channels from the bottom to the top thereof, the walls defining said channels, nozzles and stalks forming an angle relative to the plane of said layers of not more than 2*.
Claim 3
Dependent Claim
78 words
A pure fluid amplifier or logic element comprising a unItary structure including a metallic backing plate, a lower uniform layer of light-absorptive material covering a surface of said backing plate, an upper uniform layer of light polymerized material overlying said lower layer and having a plurality of interrelated channels and nozzles formed therein and extending therethrough and to said lower layer, and a cover plate sealed to the surface of said upper layer remote from said backing plate.
Claim 4
Dependent Claim
35 words
The combination according to claim 11 further comprising a plurality of threaded apertures extending through said metallic backing plate into registry with preselected regions of said channels, and fluid flow connectors threaded into said apertures.
Claim 5
Dependent Claim
17 words
The combination according to claim 4 wherein said light-polymerized material is a solid in the unpolymerized state.
Claim 6
Dependent Claim
112 words
A pure fluid amplifier or logic element comprising a unitary structure having a rigid backing plate, a lower uniform layer of light absorptive material covering and secured to a surface of said backing plate, an upper uniform layer of light polymerized material overlying and secured to said lower layer and having a plurality of interrelated channels and nozzles formed therein and extending therethrough to said lower uniform layer, and a cover plate sealed to the surface of said upper layer remote from said rigid backing plate, a plurality of apertures extending through said rigid backing plate into registry with preselected regions of said channels and fluid flow connectors secured in said apertures.
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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) | 1974-03-08 | 1974-09-07 | 1975-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-08 | 1978-09-07 | 1979-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-08 | 1982-09-07 | 1983-03-09 | $7700.00 | Window Closed / Lapsed |