Patent EP0155487A2 successfully refreshed from Google Patents.
EP0155487A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Fluid machine
Assignee: Hitachi Ltd
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Filing: 1985-02-07
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Granted: —
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Expires: 2005-02-07
Abstract
Abstract A fluid machine has a cylinder block rotating together with a rotary shaft and having cylinder bores which receive pistons. The pistons are connected to a swash plate which in turn is connected to the rotary shaft through a universal joint. A fluid is puped by the reciprocating motion of the pistons which is caused by the rotation of the cylinder block. This machine exhibits a superior mechanical eficiency thanks to the use of the universal joint.
Inventors
- 👤 Hisanobu Kanamaru
- 👤 Akira Tohkairin
- 👤 Tomiyasu Onuma
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 14:44
CPC Classifications
E; E05; E05B; E05B65/00; F; F01; F01B; F01B3/00; F01B3/10; F01B3/103; F01B3/106; F01B3/0032; F01B3/02; F04; F04B; F04B25/00; F04B25/04; F16; F16D; F16D3/00; F16D3/16; F16D3/26; F16D3/38; F16D3/40
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
254 words
A fluid machine comprising: (a) a hollow cylinder case; (b) an end cover disposed at one side of said cylinder case; (c; a rotary shaft extending in the cylinder case and adapted to rotate; (d) a cylinder block disposed in said cylider case and adapted to retate together with said rotary shaft; (e) cyliger bores formed in said cylinder block; (f a support shaft provided on said end cover at a position of radially offsetting from the extension of the axis of rotation of said rotary shaft and extending between said end cover and said cylinder block so as to intersect to the axis of rotation of said rotary shaft; (g) a cross-spider type universal joint comprising a first rotary end rotatably supported by said support shaft, a second rotary end fixed to the end of said rotary shaft, and a cross-spider through which said first and second rotary ends are connected; (h) a swash plate secured to said first rotary end of said universal joint; (i) pistons received in said cylinder bores and connected to said swash plate; and a fluid inlet passage and a fluid out let passage provided on the opposite side to said end cover and arranged such as to supply, when said pistons are in their stroke for receiving a working fluid, said fluid to said cylinder bores through passage holes formed in said cylinder bores and discharge, when said pistons are in their stroke for discharging said fluid, said fluid from said cylinder bores through said passage holes.
Claim 2
Dependent Claim
254 words
A fluid machine comprising: (a) a hollow cylinder case; (b) an end cover disposed at one side of said cylinder case; (c; a rotary shaft extending in the cylinder case and adapted to rotate; (d) a cylinder block disposed in said cylider case and adapted to retate together with said rotary shaft; (e) cyliger bores formed in said cylinder block; (f a support shaft provided on said end cover at a position of radially offsetting from the extension of the axis of rotation of said rotary shaft and extending between said end cover and said cylinder block so as to intersect to the axis of rotation of said rotary shaft; (g) a cross-spider type universal joint comprising a first rotary end rotatably supported by said support shaft, a second rotary end fixed to the end of said rotary shaft, and a cross-spider through which said first and second rotary ends are connected; (h) a swash plate secured to said first rotary end of said universal joint; (i) pistons received in said cylinder bores and connected to said swash plate; and a fluid inlet passage and a fluid out let passage provided on the opposite side to said end cover and arranged such as to supply, when said pistons are in their stroke for receiving a working fluid, said fluid to said cylinder bores through passage holes formed in said cylinder bores and discharge, when said pistons are in their stroke for discharging said fluid, said fluid from said cylinder bores through said passage holes.
Claim 3
Dependent Claim
40 words
A fluid machine according to claim 1, wherein said fluid inlet passage and said fluid outlet passage are formed in a front cover which is disposed at the opposite side of said cylinder case with respect to said end cover.
Claim 4
Dependent Claim
35 words
A fluid machine according to claim 1, wnerein said cylinder block is axially movably engaged with a spline formed on said rotary shaft and is biased resiliently against said front cover by a resilient member.
Claim 5
Dependent Claim
28 words
A fluid machine according to claim 1, wherein a bearing is interposed between the outer periphery of said cylinder block and the inner periphery of said cylinder case.
Claim 6
Dependent Claim
31 words
A fluid machine according to claim 1, wherein said support shaft is provided on said end cover and is able to rotate about the center of rotation of said universal joint.
Claim 7
Dependent Claim
46 words
A fluid machine according to claim 5, wherein said support shaft is fixed to a base toothed at a part thereof and said base is rotated about the center of rotation of said universal joint by means of an adjusting screw provided on said end cover.
Claim 8
Dependent Claim
39 words
7 . A fluid machine according to claim 5, wherein said support shaft is fixed to a base which is rotatable about the center of rotation of said universal joint by a hydraulic piston provided on the end cover.
Claim 9
Dependent Claim
46 words
A fluid machine according to claim 1, wherein said fluid inlet passage and said fluid outlet passage include a seat member which is held in sliding contact with said cylinder bores and having channels which are arranged in a predetermined positional relationship with said passage holes.
Claim 10
Dependent Claim
44 words
A fluid machine according to claim 8, wherein said cnannels formed ins aid seat member are spaced from each other by a distance such that the bores do not overlap said channels when said pistons are located at their top or bottom dead center.
Claim 11
Dependent Claim
23 words
A fluid machine according to claim 1, wherein said first rotary end is rotatably supported by said support shaft through a spherical bearing.
References Cited (Backward Citations)
No citation records indexed.
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