US3913607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxygen dilution apparatus
Assignee: CREDITANSTALT-BANKVEREIN
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Filing: 1974-05-07
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Granted: 1975-10-21
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Expires: 1994-05-07
Abstract
Abstract An oxygen dilution apparatus for regulating the concentration of oxygen directed therefrom comprises a hollow cylindrical member open at both ends one end of which has at least one slot extending from one cylinder end, an air dilution cap having an end wall and a cylindrical side wall defining a chamber and at least one port on the side wall and which cap rotatably engages the slotted end of the cylindrical member, and an oxygen supply pipe for directing oxygen into the chamber extending through the cap end wall and terminating in a notched end having a restricted orifice whereby the cap is rotatably adjustable on the cylinder member to provide selective communication of the slot with the port to adjust the amount of entrained air passing therethrough to the chamber for varying the oxygen concentrations. In another embodiment, two oxygen dilution caps are provided with a single cylinder for selective use to achieve high or low concentrations.
Inventors
- 👤 John H Price
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:05
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/10; A61M16/12; A61M16/122; A61M16/125; A61M16/127; A61M16/20; A61M16/201; A61M2202/00; A61M2202/02; A61M2202/0208; A61M2205/00; A61M2205/42; Y; Y10; Y10T; Y10T137/00; Y10T137/5109; Y10T137/5283; Y10T137/8158; Y10T137/8225; Y10T137/8275; Y10T137/8292; Y10T137/8309; Y10T137/8593; Y10T137/87571; Y10T137/87587; Y10T137/87619; Y10T137/87627
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
140 words
An oxygen dilution apparatus comprising: a. a hollow cylindrical member open at both ends one end having at least one slot extending along an end portion of said cylinder, b. an air dilution cap having an end wall and a cylindrical side wall defining a chamber and having at least one port extending therealong said cap rotatably engaging the slotted end portion of said cylindrical member, c. a hollow oxygen supply pipe for directing oxygen into said chamber and extending through said end wall and terminating in a stepped end having a step along one side of said pipe end communicating with the hollow pipe interior, whereby said cap is rotatably adjustable on said cylindrical member to provide selective alignment of said slot with said port for entraining selected amounts of air through said port and slot into said chamber.
Claim 2
Dependent Claim
140 words
An oxygen dilution apparatus comprising: a. a hollow cylindrical member open at both ends one end having at least one slot extending along an end portion of said cylinder, b. an air dilution cap having an end wall and a cylindrical side wall defining a chamber and having at least one port extending therealong said cap rotatably engaging the slotted end portion of said cylindrical member, c. a hollow oxygen supply pipe for directing oxygen into said chamber and extending through said end wall and terminating in a stepped end having a step along one side of said pipe end communicating with the hollow pipe interior, whereby said cap is rotatably adjustable on said cylindrical member to provide selective alignment of said slot with said port for entraining selected amounts of air through said port and slot into said chamber.
Claim 3
Dependent Claim
18 words
The apparatus of claim 1 wherein said pipe extends into said cap substantially the length of said port.
Claim 4
Dependent Claim
27 words
The apparatus of claim 2 wherein said step bisects said orifice whereby said orifice communicates with said chamber below the end of said pipe within said chamber.
Claim 5
Dependent Claim
50 words
The apparatus of claim 3 wherein said step forms a substantially flat surface adjacent the end of said pipe the plane of said surface being substantially normal to the elongated axis of said pipe said surface being disposed along said pipe at least 75% of the length of said port.
Claim 6
Dependent Claim
135 words
An oxygen dilution apparatus comprising: a. a hollow cylindrical member open at both ends, one end having at least one slot extending along an end portion of said cylinder, b. first and second air diluton caps, one for supplying lower oxygen concentrations and the other for higher concentrations each cap having an end wall and a cylindrical side wall defining a chamber and having at least one port extending therealong said cap rotatably engaging the slotted end portion of said cylindrical member and an oxygen supply pipe extending inwardly of said cap chamber and having means exterior of said cap for securing an oxygen supply the thereto, and c. means on said cylindrical member for preventing securing the lower or higher concentration air dilution cap on said cylindrical member when the other concentration is desired.
Claim 7
Dependent Claim
135 words
An oxygen dilution apparatus comprising: a. a hollow cylindrical member open at both ends, one end having at least one slot extending along an end portion of said cylinder, b. first and second air diluton caps, one for supplying lower oxygen concentrations and the other for higher concentrations each cap having an end wall and a cylindrical side wall defining a chamber and having at least one port extending therealong said cap rotatably engaging the slotted end portion of said cylindrical member and an oxygen supply pipe extending inwardly of said cap chamber and having means exterior of said cap for securing an oxygen supply the thereto, and c. means on said cylindrical member for preventing securing the lower or higher concentration air dilution cap on said cylindrical member when the other concentration is desired.
Claim 8
Dependent Claim
26 words
Apparatus of claim 5 wherein said caps include a lug member and wherein said means on said cylindrical member comprises a stop member extending outwardly therefrom.
Claim 9
Dependent Claim
63 words
Apparatus of claim 6 wherein said cylindrical member includes indicia along one exterior side thereof for lower oxygen concentrations and along the opposite exterior side for higher oxygen concentrations and wherein each said air dilution cap includes an indexing member thereon adjacent said indicia when one of said caps is secured to the cylindrical member with the lug thereon opposite the stop member.
Claim 10
Dependent Claim
13 words
The apparatus of claim 1 wherein said pipe end has a restricted orifice.
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) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |