Rotary expansible chamber devices – With mechanical sealing – Axially movable end wall or end wall portion
Patent
1992-04-06
1993-12-28
Bertsch, Richard A.
Rotary expansible chamber devices
With mechanical sealing
Axially movable end wall or end wall portion
418131, F01C 1908, F01C 1910
Patent
active
052734110
ABSTRACT:
A rotary positive displacement hydraulic machine such as a gear pump or motor, comprises a housing defining two mutually intersecting parallel working chambers, two meshing rotors mounted for rotation in the two chambers, respectively, and two bearing supports at opposite ends of the parallel chambers and each supporting bearings in which the two rotors are journalled for rotation. The housing is open at one or both ends. The or each open end of the housing has a hollow, non-circular spigot which is received in a recess of matching non-circular shape defined by a continuous flange projecting from a peripheral region of a respective bearing support in a direction parallel to the axes of rotation of the meshing rotors and which is surrounded by a shoulder extending from the spigot to the peripheral edge of the housing, so that the or each open end of the housing is supported by its bearing support against outwards movement in a plane transverse to the axes of rotation of the meshing rotors.
REFERENCES:
patent: 2622534 (1952-12-01), Johnson
patent: 3068804 (1962-12-01), Thrap et al.
patent: 3671154 (1970-10-01), Kolbe et al.
Bertsch Richard A.
Freay Charles
Ultra Hydraulics Limited
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