Pumps – Expansible chamber type – Pumping member position controlled port
Patent
1990-03-26
1991-12-10
Michalsky, Gerald A.
Pumps
Expansible chamber type
Pumping member position controlled port
137556, 251297, 417 63, 417497, 417571, F04B 2102, F04B 3910
Patent
active
050713256
ABSTRACT:
The present invention is a fuel primer pump capable of manually injecting fuel into the carburetor of an internal combustion engine, and is adapted to include both enrichment and shut-off positions. The primer pump includes a housing sealed at one end by an end cap which defines inlet and outlet openings. An internal piston is disposed within the housing for manual pumping of fuel. A relatively free floating valve pin, mounted on the internal piston, prevents an unwanted flow of fuel through the primer pump when the pump is disposed in the shut-off position. The valve pin is slidably retained within a cavity in the piston which opens onto the face of the piston proximate the end cap defining the outlet passageway. The valve pin is spring biased toward the outlet passageway and centers itself in the passageway seat due to the free floating nature thereof. The valve pin becomes disengaged from the seat when the primer pump is placed in the enrichment position, allowing the flow of fuel through the primer pump. Check valve assemblies communicating with the inlet and outlet openings operate to produce a flow of fuel to the carburetor during manual operation of the primer pump.
REFERENCES:
patent: 1190539 (1916-07-01), Georgenson
patent: 1240404 (1917-09-01), Aull
patent: 1396529 (1921-11-01), Rudolph
patent: 1457033 (1923-05-01), Jorgensen et al.
patent: 2345663 (1944-04-01), Franck
patent: 2424595 (1947-07-01), Warren
patent: 2537241 (1951-01-01), Smith
patent: 2662723 (1953-12-01), Coffey
patent: 2690278 (1954-09-01), Bacheller
patent: 3090596 (1963-05-01), Gifford
patent: 3153381 (1964-10-01), Holley, Jr.
patent: 3159176 (1964-12-01), Russell et al.
patent: 3165120 (1965-01-01), Horowitz
patent: 3434808 (1969-03-01), Pobst, Jr.
patent: 3469528 (1969-09-01), East
patent: 3527551 (1970-09-01), Kutik et al.
patent: 3591316 (1971-07-01), Piccirilli
patent: 3664774 (1972-05-01), Tupper
patent: 3676026 (1972-07-01), Tupper
patent: 3803988 (1974-04-01), Orr
patent: 3983857 (1976-10-01), O'Connor
patent: 4189064 (1980-02-01), O'Neill et al.
patent: 4370107 (1983-01-01), Landis et al.
patent: 4660516 (1987-04-01), Baltz et al.
patent: 4684484 (1987-08-01), Guntly
patent: 4735751 (1988-04-01), Guntly
patent: 4776776 (1988-10-01), Jones
patent: 4862847 (1989-09-01), Kobayashi et al.
Koengeter Donald A.
Tupper Willis E.
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