Pumps – Expansible chamber type – Pressure responsive distributor opened responsive to pumping...
Patent
1986-08-05
1988-05-31
Smith, Leonard E.
Pumps
Expansible chamber type
Pressure responsive distributor opened responsive to pumping...
1231875R, 417520, F04B 2102
Patent
active
047477601
ABSTRACT:
A pump for feed-pumps of fuel injection systems for internal combustion engines having a manually actuatable element, which operates counter to the force of a restoring spring to effect an inward stroke of a piston which includes a valve tappet thereon that pushes open a ball valve to the fuel feeding system of a feed pump. In operation, a medium is positively displaced from a work chamber into the feeding system. Upon an automatic return stroke of the piston, a medium is aspirated from the fuel feeding system of the feed pump into the work cylinder and at the end of the return stroke the ball valve closes automatically. In its position of repose, the pump does not require its piston to be locked in place, and pressure impacts of the feed pump are prevented from reaching the piston.
REFERENCES:
patent: 2966861 (1961-01-01), Stewart et al.
patent: 3288072 (1966-11-01), McKenzie
patent: 3500759 (1970-03-01), Potter et al.
patent: 3669576 (1972-06-01), Little et al.
patent: 3803968 (1974-04-01), Orr
patent: 4012174 (1977-03-01), Seibel et al.
Eberl, deceased Leonhard
Mielich Karl
Mozes Miklos
Schmid Walter
Stieninger Klaus
Greigg Edwin E.
Robert & Bosch GmbH
Smith Leonard E.
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