Motors: expansible chamber type – Three or more cylinders arranged in parallel radial or... – Cylinders parallel to rotation axis
Patent
1986-02-28
1987-09-01
Croyle, Carlton R.
Motors: expansible chamber type
Three or more cylinders arranged in parallel radial or...
Cylinders parallel to rotation axis
92 122, 417222, F01B 1304
Patent
active
046900365
ABSTRACT:
This invention relates to an axial piston system hydraulic pump or motor capable of being changed over by two stages and particularly preferably used as the hydraulic motor for driving vehicles such as bulldozer, shoveldozer, etc. Thus, to provide as compact as possible two step changing-over mechanism and a well-balanced operation with a relative small force, a smooth plane against which the shoe at the plunger side opposed to a swash plate abuts and a first and second abutting portions located at the opposite plane to the smooth plane to abut against a fixed portion, when the swash plate pivots about the center of pivotal movement, to regulate the angle of said smooth plane of the swash plate to two positions are formed while a drive member is disposed which pivots said swash plate about the center of the pivotal movement to displace the angle of the smooth plane to two positions. Also, preferably, a pair of the drive members are arranged in the left and right positions respectively corresponding to the high and low pressure sides of the hydraulic pump or motor.
REFERENCES:
patent: 2870746 (1959-01-01), Keel
patent: 3070031 (1962-12-01), Puryear
patent: 3382793 (1968-05-01), Gantzer
patent: 3479963 (1969-11-01), Randa et al.
patent: 3935796 (1976-02-01), Wood
patent: 4142452 (1979-03-01), Forster
patent: 4581980 (1986-04-01), Berthold
Kosaka Masato
Yamazaki Tatsu
Croyle Carlton R.
Kayaba Kogyo Kabushiki Kaisha
Neils Paul F.
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