Patent US4466338A successfully refreshed from Google Patents.
US4466338A
Expired / Lapsed
US
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Oblique-shaft axial piston machine having a follower plate for the cylinder drum
Assignee: Hydromatik GmbH
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Filing: 1982-05-20
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Granted: 1984-08-21
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Expires: 2002-05-20
Abstract
Abstract An axial piston machine of the oblique-shaft type is described. The transmission of torque between the drive disc and the cylinder drum of the machine is effected by direct propulsion of the cylinder drum by way of the piston elements traveling to and fro in cylinder bores of the cylinder drum. On the side of the cylinder drum towards the drive disc, a follower plate with slot-like openings is provided. The edges of the openings are met by the piston rod areas of the piston elements to drive the cylinder drum. In order that the follower plate may be light in construction and designed for long service life, it is proposed according to the invention, that the follower plate be made, by means of a locking part, into a follower disc having openings enclosed all around for passage of the piston rod area of the piston elements.
Inventors
- 👤 Rainer Stoelzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:41
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/12; F04B1/20; F04B1/2092
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
150 words
An oblique-shaft axial piston machine having piston elements articulated in a drive disc fixedly connected to a drive shaft, in which the transmission of torque between said drive shaft and a rotatably mounted cylinder drum, supported on a rider and having axial cylinder bores in which piston elements travel to and fro, is effected exclusively by piston rod portions of said piston elements which, in at least one definite rotational position of the drive shaft and cylinder drum, meet the edges of slot-like openings in a follower plate connected to the cylinder drum, the width of said openings being less than the diameter of the cylinder bores, said machine being characterized in that the follower plate is fixedly connectable to a locking part that completes each opening so as to form a hole enclosed all around, whereby the follower plate together with the locking part constitutes a stable follower disc.
Claim 2
Dependent Claim
150 words
An oblique-shaft axial piston machine having piston elements articulated in a drive disc fixedly connected to a drive shaft, in which the transmission of torque between said drive shaft and a rotatably mounted cylinder drum, supported on a rider and having axial cylinder bores in which piston elements travel to and fro, is effected exclusively by piston rod portions of said piston elements which, in at least one definite rotational position of the drive shaft and cylinder drum, meet the edges of slot-like openings in a follower plate connected to the cylinder drum, the width of said openings being less than the diameter of the cylinder bores, said machine being characterized in that the follower plate is fixedly connectable to a locking part that completes each opening so as to form a hole enclosed all around, whereby the follower plate together with the locking part constitutes a stable follower disc.
Claim 3
Dependent Claim
29 words
An axial piston machine according to claim 1, characterized in that the locking part extends in the same plane as the follower plate, and is of the same thickness.
Claim 4
Dependent Claim
24 words
An axial piston machine according to claim 2, characterized in that the locking part is in rotationally fixed toothed engagement with the follower plate.
Claim 5
Dependent Claim
47 words
An axial piston machine according to claim 3, characterized in that the follower plate is in the form of a star-shaped part with openings opening radially outward and further characterized in that the locking part is in the form of an outer ring encircling the follower plate.
Claim 6
Dependent Claim
34 words
An axial piston machine according to claim 4, characterized in that said toothed engagement is provided by projections extending radially inward from the outer ring into recesses on the periphery of the follower plate.
Claim 7
Dependent Claim
37 words
An axial piston machine according to claim 4, characterized in that said toothed engagement is provided by projections extending radially inward from the outer ring and fitted into the openings of the follower plate radially from without.
Claim 8
Dependent Claim
41 words
An axial piston machine according to claim 3, characterized in that the follower plate is in the form of an annular part with openings opening radially inward and in that the locking part is in the form of an inner ring.
Claim 9
Dependent Claim
37 words
An axial piston machine according to claim 7, characterized in that said toothed engagement is provided by projections extending radially outward from the inner ring and fitted into the openings of the follower plate radially from within.
Claim 10
Dependent Claim
21 words
An axial piston machine according to claim 6 or 8 characterized in that the openings of the follower plate are slot-like.
References Cited (Backward Citations)
US1137283A
Cited
US3933082A
Cited
US3889578A
Cited
US3943828A
Cited
FR2307984A1
Cited
US4108048A
Cited
DE2619005A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-08-21 | 1988-02-20 | 1988-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-21 | 1992-02-20 | 1992-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-21 | 1996-02-20 | 1996-08-21 | $7700.00 | Window Closed / Lapsed |