US3604314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrostatic axial piston machine
Assignee: Mannesmann Meer AG
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Filing: 1969-05-07
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Granted: 1971-09-14
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Expires: 1989-05-07
Abstract
Abstract A hydrostatic axial piston machine has a control block, a mirror surface thereon, a cylinder drum rotatably supported by said mirror surface, and dosing means assuring a metered supply of lubricating liquid to the mirror surface.
Inventors
- 👤 Heinrich Steiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:15
CPC Classifications
F; F01; F01B; F01B3/00; F01B3/0032; F01B3/0044; F01B3/0047
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
191 words
A hydrostatic axial piston machine comprising a cylinder drum, cylinders rotation-symmetrically arranged in said drum, a control block having a mirror surface having portions axially supporting said cylinder drum, recesses in said mirror surface, liquid discharge bores in said drum and individually connected to said cylinders and arranged to communicate said recesses at predetermined relative positions of said drum and said mirror surface, lubrication pockets forming relief areas in said mirror surface, means for supplying lubrication liquid to said pockets for preventing wear by friction between said cylinder drum and said mirror surface, said lubrication liquid supply means comprising dosing means so constructed and arranged as to maintain the rate of liquid supplied to said relief areas at least proportionate to the relative rotational speed of said cylinder drum and said mirror surface, said dosing means is a constant-stroke piston pump and drive means are provided for said pump including means for maintaining the speed of said pump positively proportional to the speed of the axial piston machine, and said piston pump comprises pistons placed in said control block and a swashplate placed in said cylinder drum for driving said pistons.
Claim 2
Dependent Claim
191 words
A hydrostatic axial piston machine comprising a cylinder drum, cylinders rotation-symmetrically arranged in said drum, a control block having a mirror surface having portions axially supporting said cylinder drum, recesses in said mirror surface, liquid discharge bores in said drum and individually connected to said cylinders and arranged to communicate said recesses at predetermined relative positions of said drum and said mirror surface, lubrication pockets forming relief areas in said mirror surface, means for supplying lubrication liquid to said pockets for preventing wear by friction between said cylinder drum and said mirror surface, said lubrication liquid supply means comprising dosing means so constructed and arranged as to maintain the rate of liquid supplied to said relief areas at least proportionate to the relative rotational speed of said cylinder drum and said mirror surface, said dosing means is a constant-stroke piston pump and drive means are provided for said pump including means for maintaining the speed of said pump positively proportional to the speed of the axial piston machine, and said piston pump comprises pistons placed in said control block and a swashplate placed in said cylinder drum for driving said pistons.
Claim 3
Dependent Claim
188 words
A hydrostatic axial piston machine comprising a cylinder drum, cylinders rotation-symmetrically arranged in said drum, a control block having a mirror surface having portions axially supporting said cylinder drum, recesses in said mirror surface, liquid discharge bores in said drum and individually connected to sAid cylinders and arranged to communicate said recesses at predetermined relative positions of said drum and said mirror surface, lubrication pockets forming relief areas in said mirror surface, means for supplying lubrication liquid to said pockets for preventing wear by friction between said cylinder drum and said mirror surface, said lubrication liquid supply means comprising dosing means so constructed and arranged as to maintain the rate of liquid supplied to said relief areas at least proportionate to the relative rotational speed of said cylinder drum and said mirror surface, Said dosing means comprises a bore in said control block, a free piston reciprocatable in said bore, abutment means in said bore for limiting the stroke of said free piston, channels individually terminating in said mirror surface and individually connected to the ends of said bore extending beyond the limit positions of said free piston.
Claim 4
Dependent Claim
188 words
A hydrostatic axial piston machine comprising a cylinder drum, cylinders rotation-symmetrically arranged in said drum, a control block having a mirror surface having portions axially supporting said cylinder drum, recesses in said mirror surface, liquid discharge bores in said drum and individually connected to sAid cylinders and arranged to communicate said recesses at predetermined relative positions of said drum and said mirror surface, lubrication pockets forming relief areas in said mirror surface, means for supplying lubrication liquid to said pockets for preventing wear by friction between said cylinder drum and said mirror surface, said lubrication liquid supply means comprising dosing means so constructed and arranged as to maintain the rate of liquid supplied to said relief areas at least proportionate to the relative rotational speed of said cylinder drum and said mirror surface, Said dosing means comprises a bore in said control block, a free piston reciprocatable in said bore, abutment means in said bore for limiting the stroke of said free piston, channels individually terminating in said mirror surface and individually connected to the ends of said bore extending beyond the limit positions of said free piston.
Claim 5
Dependent Claim
23 words
A hydrostatic axial piston machine according to claim 2 wherein said abutment means are adjustable for adjusting the stroke of said free piston.
Claim 6
Dependent Claim
75 words
A hydrostatic axial piston machine according to claim 2 comprising terminal bores in said cylinder drum individually connected to said cylinders and terminating opposite a predetermined area of said mirror surface, said channels terminating in said last-mentioned area of said mirror surface, and second channels individually connected to the ends of said bore in said control block extending beyond the limit positions of said free piston, said second channels individually terminating in said lubrication pockets.
References Cited (Backward Citations)
US2155455A
Cited
GB684551A
Cited
GB767213A
Cited
US2916334A
Cited
US3040672A
Cited
US3232239A
Cited
US3487788A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |