Pumps – Three or more cylinders arranged in parallel – radial – or...
Patent
1985-05-17
1986-02-04
Freeh, William L.
Pumps
Three or more cylinders arranged in parallel, radial, or...
92 71, F04B 116, F04B 114
Patent
active
045682526
ABSTRACT:
A swash-plate type compressor having a housing, a drive shaft rotatably supported by the housing, a swash-plate slantly secured on the drive shaft, and a plurality of pistons fitted in a cylinder bore formed in correspondence to each of the pistons parallelly to the drive shaft and provided with a pair of concave spherical surface formed therein. Each of the pistons is engaged with the swash-plate via a pair of shoes of substantially semi-spherical shape. The shoe has a convex spherical surface which is in sliding contact with the concave spherical surface of the piston and a flat-side surface which is in sliding contact with the swash-plate. The flat-side surface consists of a chamfered surface annularly formed on the outer portion thereof and a centrally left substantially flat surface with a diameter as large as about 60-90% of that of the whole flat-side surface. The substantially flat surface is formed into an extremely gentle convex surface with a height less than 15 .mu.m at the peak located in the center thereof. The whole surface of the shoe is covered by a solid lubricating film.
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The Review of Scientific Instruments vol. 43, No. 9, pp. 1331-1333, Sep. 1972.
Hattori Mitsuhiro
Ohno Hiromitsu
Takahashi Shigeaki
Takenaka Kenji
Freeh William L.
Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
Taiho Kogyo Co. Ltd.
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