US3881846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pump with resilient pumping membrane
Assignee: Outboard Marine Corp
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Filing: 1973-08-06
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Granted: 1975-05-06
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Expires: 1993-08-06
Abstract
Abstract Disclosed herein is a fluid pump comprising a housing having therein a pocket, a pumping membrane of resilient material and including therein a pumping cavity located in the housing pocket, together with one-way fluid inlet and outlet valves connected to the opposite ends of the pumping membrane and means for periodically squeezing the pumping cavity within the pocket so as to reduce the volume of the cavity and thereafter permitting expansion of the cavity to thereby induce fluid flow from the membrane through the outlet valve in response to squeezing of the cavity and to induce fluid into the cavity through the inlet valve in response to expansion of the cavity.
Inventors
- 👤 Gerald E Kashmerick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:18
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/0009; F04B43/0045; F04B43/08
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
163 words
A fluid pump comprising a hollow housing including means defining a series of radially inwardly open, elongated pockets arranged in a circular array with the axis of said array being generally paRallel with the elongation of said pockets, a pumping membrane of resilient material including a series of elongated pumping cavities respectively located in said housing pockets, a series of one-way inlet valves respectively connected with said pumping cavities, a series of one-way outlet valves respectively connected with said pumping cavities, rotary means located within said housing in excentric relation to said array of pockets for periodically squeezing said membrane within said pockets to reduce the volume of said cavities and thereafter permitting resilient expansion of said cavities within said pockets so as thereby to induce fluid outflow from said cavities through said outlet valves in response to squeezing of said membrane and to induce fluid inflow into said cavities through said inlet valves in response to said resilient expansion of said cavities.
Claim 2
Dependent Claim
163 words
A fluid pump comprising a hollow housing including means defining a series of radially inwardly open, elongated pockets arranged in a circular array with the axis of said array being generally paRallel with the elongation of said pockets, a pumping membrane of resilient material including a series of elongated pumping cavities respectively located in said housing pockets, a series of one-way inlet valves respectively connected with said pumping cavities, a series of one-way outlet valves respectively connected with said pumping cavities, rotary means located within said housing in excentric relation to said array of pockets for periodically squeezing said membrane within said pockets to reduce the volume of said cavities and thereafter permitting resilient expansion of said cavities within said pockets so as thereby to induce fluid outflow from said cavities through said outlet valves in response to squeezing of said membrane and to induce fluid inflow into said cavities through said inlet valves in response to said resilient expansion of said cavities.
Claim 3
Dependent Claim
84 words
A fluid pump in accordance with claim 1 wherein said rotary means comprises a drive shaft extending through said housing in concentric relation to said array of pockets, a cylindrical cam element mounted on said drive shaft in excentric relation thereto and for common rotation therewith and including an outer surface, a bearing engaged with said outer surface of said cam element, and a hollow cylindrical member including an outer surface bonded to said membrane and an inner surface in engagement with said bearing.
Claim 4
Dependent Claim
47 words
A fluid pump in accordance with claim 1 wherein one of said series of inlet valves and said series of outlet valves is formed in a common member located at one end of said membrane and including a fluid passage communicating with said one series of valves.
Claim 5
Dependent Claim
40 words
A fluid pump in accordance with claim 1 wherein one of said series of inlet valves and said series of outlet valves is formed integrally with said membrane adjacent to one end thereof and communicates with a common fluid passage.
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) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |