W-mechanism and radial-plunger-type hydraulic pressure apparatus

Details W-mechanism and radial-plunger-type hydraulic pressure apparatus W-mechanism and radial-plunger-type hydraulic pressure apparatus

1992-02-13

1993-08-31

Wright, Dirk

Machine element or mechanism

Alternating-motion driven device with means during operation...

Stroke adjustable to zero and/or reversible in phasing

475162, F16H 3508

Patent

active

052398935

ABSTRACT:
A radial-plunger-type hydraulic pump or motor includes a W-mechanism comprising a first internal gear relatively rotatably mounted on a main shaft, an external gear rotatably mounted on a supplementary shaft and held in mesh with the first internal gear, and a second internal gear rotatably mounted on an auxiliary shaft and held in mesh with the external gear. The first and second internal gears have the same number of gear teeth, and the supplementary shaft and the auxiliary shaft can revolve around the main shaft. When the auxiliary shaft revolves around the main shaft while the first internal gear is being held against rotation, the second internal gear does not rotate about its own axis, but revolves with the auxiliary shaft around the main shaft. The plungers of the radial-plunger-type pump or motor are allowed to reciprocally move in identical strokes, and no thrust load is applied between the plungers and the cylinders in which the plungers reciprocally move. The W-mechanism, which comprise gears, can operate at high speed with high efficiency, and are of relatively small axial dimensions.

REFERENCES:
patent: 1137877 (1915-05-01), Manly et al.
patent: 1283249 (1918-10-01), Manly
patent: 2482568 (1949-09-01), Werner
patent: 3146638 (1964-09-01), Peras
patent: 3416495 (1947-02-01), Piazze
patent: 4679465 (1987-07-01), Goto et al.
patent: 4762025 (1988-08-01), Lew
patent: 5105684 (1992-04-01), Imanishi
English translation of Abstract of 3-37465.

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