Hydraulic pump having floating spigot valve

Details Hydraulic pump having floating spigot valve Hydraulic pump having floating spigot valve

1991-05-08

1992-01-21

Smith, Leonard E.

Motors: expansible chamber type

Three or more cylinders arranged in parallel radial or...

Cylinders parallel to rotation axis

91503, F01B 100

Patent

active

050819089

ABSTRACT:
A manual hydraulic helm pump (10) for actuating a remote submerged steering element in a boat includes a drive shaft (26) rotatably supported in a housing (12). A rotary cylinder block (32) disposed in the housing (12) is fixed to the drive shaft and includes a plurality of axial compression chambers (40). The cylinder block (32) is supported at one end by a roller bearing (34) and at the other end by the drive shaft (26). Each of the compression chambers (40) include a slidable piston (42) biased outwardly against an angular swash plate (50). A spigot-type timing valve (52) is nonrotatably supported within the cylinder block. A transfer valve (59) is fixed relative to the housing (12). A pair of tubular connector sleeves (72a, 72b) movably interconnect the timing valve (52) and the transfer valve (59). O-ring seals (71a, 71b) are provided at each end of the two connector sleeves (71a, 72b) for maintaining a fluid tight seal while permitting the timing valve (52) to minutely orbit relative to the transfer valve (59).

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