Pumps – Condition responsive control of drive transmission or pump... – Adjustable cam or linkage
Patent
1989-04-18
1991-02-05
Smith, Leonard E.
Pumps
Condition responsive control of drive transmission or pump...
Adjustable cam or linkage
417270, 91506, F04B 128
Patent
active
049900633
ABSTRACT:
In a control cylinder device of a variable displacement compressor, an annular cylinder concentric with a driving rotary shaft is provided in a housing of a compressor body, and an annular control piston is slidably fitted in the cylinder to define a control pressure chamber within the cylinder. The annular control piston is connected to a sleeve, such that the sliding movement of the sleeve can be controlled by the operation of the control piston. Further, inner and outer seal rings are interposed in an axially misaligned relation to each other between inner and outer slide surfaces of the cylinder and control piston. This facilitates an accurate formation of the inner and outer surfaces of the cylinder in the cylinder device on which the control piston slides. Also, this easily insures sealing properties required between the slide surfaces of the cylinder and the piston. In addition, it is possible to effectively prevent the inclination of the control piston within the cylinder.
REFERENCES:
patent: 2684630 (1951-11-01), Widmer et al.
patent: 4037993 (1977-07-01), Roberts
patent: 4231713 (1980-11-01), Widdowson et al.
patent: 4506648 (1985-03-01), Roberts
Kato Seiji
Minakawa Yasuo
Nakasone Hidetaka
Oono Hiromitsu
Honda Giken Kogyo Kabushiki Kaisha
Savio, II John A.
Smith Leonard E.
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