US3941355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixing insert for foam dispensing apparatus
Assignee: National Aeronautics and Space Administration
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Filing: 1974-06-12
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Granted: 1976-03-02
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Expires: 1994-06-12
Abstract
Abstract A device for mixing foam ingredients. The device comprises an arrangement of lands situated about a cylindrical elongated shaft-like member with each land having a slot therein. The slots of alternate lands are positioned 180° from each other so that as the ingredients flow through the mixing chamber it flows from adjacent one side of the housing to the other dividing as such passes around the shaft-like member.
Inventors
- 👤 William G. Simpson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:40
CPC Classifications
B; B01; B01F; B01F25/00; B01F25/40; B01F25/42; B01F25/421; B01F25/423; B01F25/4233; B01F25/43; B01F25/434; Y; Y10; Y10S; Y10S261/00; Y10S261/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
251 words
An apparatus for mixing ingredients in a fluid state for producing foam comprising: an elongated housing having a cylindrical bore extending therethrough; a mixing insert being unitary and carried within said cylindrical bore; said mixing insert including an elongated shaft-like member; a series of longitudinally spaced radially extending discs carried on said shaft-like member; the outer diameter of each of said discs corresponding to the diameter of said bore; each of said discs having a slot extending from an outer periphery of said disc for fluid passage therethrough; said slots of alternate discs being positioned substantially 180° from each other; the entire space around said shaft-like member between said discs being unobstructed whereby said ingredients may flow around said shaft-like member in either direction; means for supplying said ingredients into said elongated housing whereby said ingredients flow from one end of said housing to the other thereof as it flows through said slots of alternate discs with said ingredients being divided and recombined as it flows around said shaft-like member; an inlet passage for said ingredients extending axially from one end of said shaft-like member and laterally through the periphery of said shaft-like member into the space between the first two discs at said one end of said shaft-like member; an outlet passage for said ingredients at the other end of said shaft-like member beyond the last of said slotted discs extending laterally to the center of said shaft-like member and axially out of said other end of said shaft-like member.
Claim 2
Independent Claim
251 words
An apparatus for mixing ingredients in a fluid state for producing foam comprising: an elongated housing having a cylindrical bore extending therethrough; a mixing insert being unitary and carried within said cylindrical bore; said mixing insert including an elongated shaft-like member; a series of longitudinally spaced radially extending discs carried on said shaft-like member; the outer diameter of each of said discs corresponding to the diameter of said bore; each of said discs having a slot extending from an outer periphery of said disc for fluid passage therethrough; said slots of alternate discs being positioned substantially 180° from each other; the entire space around said shaft-like member between said discs being unobstructed whereby said ingredients may flow around said shaft-like member in either direction; means for supplying said ingredients into said elongated housing whereby said ingredients flow from one end of said housing to the other thereof as it flows through said slots of alternate discs with said ingredients being divided and recombined as it flows around said shaft-like member; an inlet passage for said ingredients extending axially from one end of said shaft-like member and laterally through the periphery of said shaft-like member into the space between the first two discs at said one end of said shaft-like member; an outlet passage for said ingredients at the other end of said shaft-like member beyond the last of said slotted discs extending laterally to the center of said shaft-like member and axially out of said other end of said shaft-like member.
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) | 1979-03-02 | 1979-09-01 | 1980-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-02 | 1983-09-01 | 1984-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-02 | 1987-09-01 | 1988-03-02 | $7700.00 | Window Closed / Lapsed |