Reciprocating piston pump

Details Reciprocating piston pump Reciprocating piston pump

1995-01-18

1996-11-12

Thorpe, Timothy S.

Pumps

Expansible chamber type

Plural pumping chambers

417273, 3031164, 92148, F04B 102, F04B 5314

Patent

active

055733867

ABSTRACT:
A reciprocating piston pump having a housing, pistons disposed opposite one another in the housing, an eccentric between the pistons, annular grooves that fit around the piston necks machined into piston ends oriented toward the eccentric, and a U-shaped hoop spring curved radially outside the eccentric in the circumferential direction thereof. The hoop spring includes forklike hoop spring ends which engage the annular grooves and press the piston ends toward the eccentric. In the circumferential direction of the substantially U-shaped hoop spring, a continuation is formed on the hoop spring and together with a stop disk aligned transversely to the eccentric shaft, forms a device that limits the pivotability of the hoop spring about the piston necks. The reciprocating piston pump is usable for instance in hydraulic motor vehicle brake systems and in other hydraulic equipment.

REFERENCES:
patent: 2271570 (1942-02-01), Pardee
patent: 2309551 (1943-01-01), Trapp et al.
patent: 3259074 (1966-07-01), Erdmann
patent: 4977606 (1990-12-01), Budecker
patent: 5213482 (1993-05-01), Reinartz et al.

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