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US4581980A Expired / Lapsed US ⏱️ 0.0 years remaining

Hydrostatic axial piston machine with swivelling inclined disc

Assignee: Brueninghaus Hydraulik GmbH
•
Filing: 1985-04-30
•
Granted: 1986-04-15
•
Expires: 2005-04-30
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Abstract

Abstract The invention relates to a hydrostatic axial piston machine (1) having a cylinder drum (9), rotating in a housing, which cylinder drum receives pistons (12) arranged on a pitch circle, and having an inclined disc (16) which pivots, in a pivot, about a swivelling axis (21) which extends eccentrically to the pitch circle, which pivot is formed by at least one bearing (23) having a bearing surface (26) which is free in the direction of the pistons (12), the inclined disc (16) being arranged loosely between the bearing (23) and the pistons (12) and being pivotable by means of an adjusting member (28). The aim of the invention is to develop the axial piston machine so that, while ensuring a simple structural design sign and simple assembly and dismantling of the inclined disc (16) and of the adjusting member (28), defined limitation of the adjusting movement of the inclined disc (16) in the direction of zero position or minimum delivery is possible. This is achieved in that the adjusting member (28) is arranged on one side of a central axis and the swivelling axis is arranged on the opposite side of the central axis, and the adjusting member is located on the side of the disc which is remote from the pistons, and is guided in the end wall of the housing (2); and in that the adjusting movement of the inclined disc (16) is limited in the direction of the pistons (12) by a stop (31) which is arranged on the side of the inclined disc (16), relative to its swivelling axis (21), on which the adjusting member (28) also is disposed.

Inventors

  • 👤 Heinz Berthold

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 19:07
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/12; F04B1/26; F04B1/30; F04B1/32; F04B1/324

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 212 words
A hydrostatic axial piston machine having a rotating cylinder drum which is arranged in a housing and which receives pistons arranged on a pitch circle, said drum having a central axis, and said machine having an inclined disc which pivots, in a pivot, about a swivelling axis which extends eccentrically to the pitch circle, which pivot is formed by at least one bearing having a bearing surface which is free in the direction of the pistons, said swivelling axis being closer to the central axis than an end of the inclined disc, the inclined disc being arranged loosely between the bearing and the pistons and being pivotable by an adjusting member, characterised in that the adjusting member is arranged on one side of the central axis and the swiveling axis is arranged on the opposite side of the central axis, and the adjusting member is located on the side of the disc which is remote from the pistons, and is guided in an end wall of the housing; and in that the adjusting movement of the inclined disc is limited in the direction of the pistons by a stop which is arranged on the side of the inclined disc, relative to its swivelling axis, on which the adjusting member also is disposed.
Claim 2
Dependent Claim 212 words
A hydrostatic axial piston machine having a rotating cylinder drum which is arranged in a housing and which receives pistons arranged on a pitch circle, said drum having a central axis, and said machine having an inclined disc which pivots, in a pivot, about a swivelling axis which extends eccentrically to the pitch circle, which pivot is formed by at least one bearing having a bearing surface which is free in the direction of the pistons, said swivelling axis being closer to the central axis than an end of the inclined disc, the inclined disc being arranged loosely between the bearing and the pistons and being pivotable by an adjusting member, characterised in that the adjusting member is arranged on one side of the central axis and the swiveling axis is arranged on the opposite side of the central axis, and the adjusting member is located on the side of the disc which is remote from the pistons, and is guided in an end wall of the housing; and in that the adjusting movement of the inclined disc is limited in the direction of the pistons by a stop which is arranged on the side of the inclined disc, relative to its swivelling axis, on which the adjusting member also is disposed.
Claim 3
Dependent Claim 31 words
An axial piston machine according to claim 1, characterised in that the stop is formed by a cam which projects from the housing into the movement space of the inclined disc.
Claim 4
Dependent Claim 26 words
An axial piston machine according to claim 2, characterised in that the cam can be inserted from the outside and, preferably, is formed by a screw.
Claim 5
Dependent Claim 25 words
An axial piston machine according to claim 1, characterised in that there is only single-stage adjustment of the inclined disc between minimum and maximum delivery.
Claim 6
Dependent Claim 37 words
An axial piston machine according to one of claims 1, characterised in that the swivelling axis is arranged at a distance (a) from said central axis offset to the side which is remote from the adjusting member.

References Cited (Backward Citations)

US2379546A Cited
GB500299A Cited
DE1055959B Cited
US3412447A Cited
DE1653529A1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1989-04-14 1989-10-14 1990-04-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1993-04-14 1993-10-14 1994-04-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1997-04-14 1997-10-14 1998-04-15 $7700.00 Window Closed / Lapsed

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