Rotary expansible chamber devices – With changeable working chamber magnitude – Cylinder or cylinder portion moved linearly and radially
Patent
1985-07-08
1987-01-06
Croyle, Carlton R.
Rotary expansible chamber devices
With changeable working chamber magnitude
Cylinder or cylinder portion moved linearly and radially
418270, F04C 200
Patent
active
046343547
ABSTRACT:
A hydraulic pump of the type in which a cam ring and rotor are mounted within a rotor chamber formed between a cover and housing fixedly mounted together. An adjustment screw extends into the rotor chamber transverse to the axis of rotation for adjusting the level of the cam ring. Two pairs of bolts, and only two pairs, extend parallel to the rotation axis at a given radius from that axis to fix together the housing and cover. The distance between the pair of bolts on either side of the adjustment screw and at the pressure region are less than the distance betwen the bolts of the opposite pair at the suction region. Further the angle .beta. between an x-x axis transverse to both the adjustment axis and the rotation axis and the radii of the pair of bolts on either side of the adjustment screw is between 60.degree. and 75.degree. and the angly .gamma. between the x-x axis and the radii of the other pair of bolts is between 25.degree. and 40.degree. so that each bolt takes up approximately the same amount of force.
REFERENCES:
patent: 3252423 (1966-05-01), Whitmore
patent: 3527552 (1970-09-01), Lincks
patent: 3717423 (1973-02-01), Pedersen
Croyle Carlton R.
Mannesmann Rexroth GmbH
Obee Jane E.
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