US3618911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamic gas-mixing apparatus
Assignee: Marlabs LLC
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Filing: 1969-09-05
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Granted: 1971-11-09
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Expires: 1989-09-05
Abstract
Abstract A first gas stream is directed to flow across the face of a gaspermeable wafer. The opposite face of the wafer covers an openended receptacle containing a second gas (often in liquid form under high pressure) which is allowed to permeate through the wafer, at a constant rate dependent upon the gas and its temperature, into the flowing first gas stream. This mixing permits the creation of a gas mixture having one component at a relatively low but controlled concentration. The wafer and its associated apparatus is housed in an oven.
Inventors
- 👤 Aaron J Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:49
CPC Classifications
G; G05; G05D; G05D11/00; G05D11/006; B; B01; B01F; B01F23/00; B01F23/10; B01F25/00; B01F25/105
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
123 words
A dynamic gas-mixing apparatus for mixing first and second gases together to form a flowing mixture of said gases, said gases having a predetermined volume flow ratio, said apparatus comprising, in combination: a body member having a face, a port in the face of said body member and fluid passage means therein for flowing gases contiguous said port, a permeable wafer disposed across said face to cover said port, an open-ended fluid receptacle positioned with the open end in contact with said wafer, thereby to substantially close said receptacle and said port to fluid passage except for permeation through said wafer, and compression spring means associated with said receptacle for maintaining the open end of said receptacle in compressive contact with said wafer.
Claim 2
Dependent Claim
123 words
A dynamic gas-mixing apparatus for mixing first and second gases together to form a flowing mixture of said gases, said gases having a predetermined volume flow ratio, said apparatus comprising, in combination: a body member having a face, a port in the face of said body member and fluid passage means therein for flowing gases contiguous said port, a permeable wafer disposed across said face to cover said port, an open-ended fluid receptacle positioned with the open end in contact with said wafer, thereby to substantially close said receptacle and said port to fluid passage except for permeation through said wafer, and compression spring means associated with said receptacle for maintaining the open end of said receptacle in compressive contact with said wafer.
Claim 3
Dependent Claim
48 words
An apparatus according to claim 1 which also includes: means for passing said first gas through said passages, thereby sweeping across said port, and said second gas being stored in said receptacle thereby to permeate through said wafer to mix with said first gas flowing across said port.
Claim 4
Dependent Claim
28 words
An apparatus according to claim 2 which also includes oven means enclosing said body member and said receptacle for heating said receptacle, thereby to vary said gas ratio.
Claim 5
Dependent Claim
35 words
An apparatus according to claim 1 wherein said wafer defines a hole therethrough, said wafer being slideable across said port to align said hole with said port to permit filling said receptacle through said port.
Claim 6
Dependent Claim
132 words
A dynamic gas-mixing apparatus for mixing first and second gases together to form a flowing mixture of said gases, said gases having a predetermined volume flow ratio, said apparatus comprising, in combination: a body member having a face, a port in the face of said body member and fluid passage means therein for flowing gases contiguous said port, a permeable wafer disposed across said face to cover said port, an open ended fluid receptacle positioned with the open end in compressive contact with said wafer, thereby to substantially close said receptacle and said port to fluid passage except for permeation through said wafer, and said wafer defining a hole therethrough and being slideable across said port to align said hole with said port thereby to permit filling said receptacle through said port.
Claim 7
Dependent Claim
132 words
A dynamic gas-mixing apparatus for mixing first and second gases together to form a flowing mixture of said gases, said gases having a predetermined volume flow ratio, said apparatus comprising, in combination: a body member having a face, a port in the face of said body member and fluid passage means therein for flowing gases contiguous said port, a permeable wafer disposed across said face to cover said port, an open ended fluid receptacle positioned with the open end in compressive contact with said wafer, thereby to substantially close said receptacle and said port to fluid passage except for permeation through said wafer, and said wafer defining a hole therethrough and being slideable across said port to align said hole with said port thereby to permit filling said receptacle through said port.
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) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |