Constant pressure type delivery valve for fuel injection pump

Details Constant pressure type delivery valve for fuel injection pump Constant pressure type delivery valve for fuel injection pump

1986-06-12

1990-03-06

Rivell, John

Fluid handling

Line condition change responsive valves

Direct response valves

13754317, 251284, F16K 1504

Patent

active

049057294

ABSTRACT:
The invention is a check valve including a valve housing defining a chamber, an inlet and an outlet; a spring holder retained in the chamber and defining a passage providing fluid communication between the chamber and the outlet, one end of the passage opening into the chamber and defining a stop surface; a valve body disposed in the chamber and movable between a closed position closing the inlet and an open position providing fluid communication between the chamber and the inlet, the valve body defining an abutment surface engaged by the stop surface upon movement of the body into the open position in response to a predetermined fluid pressure at the inlet, the abutment surface and the stop surface being shaped and arranged to provide when engaged fluid communication paths between the chamber and the passage opening; and a spring seated between the holder and the body and exerting a force tending to hold the body in the closed position. The provision of engaged stop and abutment surfaces that provide fluid communication paths permit both simplification and strengthening of the spring holder.

REFERENCES:
patent: 1370483 (1921-03-01), Powell
patent: 1553184 (1925-09-01), Mueller
patent: 2481713 (1949-09-01), Bertea
patent: 3544065 (1970-12-01), Mercier
patent: 3559678 (1971-02-01), Donner
patent: 3799194 (1974-03-01), Bedo et al.

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