US4896583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Saddle bearing support for axial piston pumps and motors
Assignee: RACINE FLUID POWER Inc C/O ROBERT BOSCH Corp A CORP OF
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Filing: 1988-02-19
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Granted: 1990-01-30
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Expires: 2008-02-19
Abstract
Abstract In a multiple piston axial type pump, a support saddle and cooperating swash block are enclosed by a housing. A pair of arcuate bearing shells are attached to spaced apart bearing seats formed on the swash block. The bearing shells contact load bearing surfaces on the support saddle. The length of each of the bearing shells is less than the length of the support saddle load bearing surfaces so that the facing surfaces of the bearing shells are always in complete contact with the load bearing surfaces throughout the complete range of relative positions of the support saddle and the swash block.
Inventors
- 👤 Gregory D. Lemke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:23
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/12; F04B1/20; F04B1/2014; F04B1/2078; F04B1/2085
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
74 words
A thrust bearing support for an axial piston pump having a support saddle comprising: a swash block having at least one arcuate bearing seat; an arcuate bearing shell attached to said bearing seat of said swash block and having an arcuate length of a bearing surface less than a length of an associated bearing surface of a support saddle; and means for retaining said bearing shell on said bearing seat of said swash block.
Claim 2
Dependent Claim
74 words
A thrust bearing support for an axial piston pump having a support saddle comprising: a swash block having at least one arcuate bearing seat; an arcuate bearing shell attached to said bearing seat of said swash block and having an arcuate length of a bearing surface less than a length of an associated bearing surface of a support saddle; and means for retaining said bearing shell on said bearing seat of said swash block.
Claim 3
Dependent Claim
29 words
A thrust bearing support according to claim 1 wherein said means for retaining said bearing shell is a pin attached to said swash block and to said bearing shell.
Claim 4
Dependent Claim
52 words
A thrust bearing support according to claim 1 wherein said bearing shell bearing surface has an arcuate length which ensures said bearing shell bearing surface is in complete contact with an associated bearing surface of a saddle throughout a predetermined range of relative angular positions between said swash block and the saddle.
Claim 5
Dependent Claim
28 words
A thrust bearing support according to claim 1 wherein said swash block has a pair of said bearing shells attached to a pair of spaced apart bearing seats.
Claim 6
Dependent Claim
102 words
An axial piston pump for pumping fluid comprising: a housing; a support saddle mounted inside said housing and having a pair of spaced apart load bearing surfaces; a swash block mounted inside said housing adjacent said support saddle and having a pair of bearing seats; and a pair of arcuate bearing shells each attached to an associated one of said swash block bearing seats for contact with an associated one of said support saddle load bearing surfaces, each of said bearing shells having an arcuate length less than an arcuate length of said associated one of said support saddle load bearing surfaces.
Claim 7
Dependent Claim
102 words
An axial piston pump for pumping fluid comprising: a housing; a support saddle mounted inside said housing and having a pair of spaced apart load bearing surfaces; a swash block mounted inside said housing adjacent said support saddle and having a pair of bearing seats; and a pair of arcuate bearing shells each attached to an associated one of said swash block bearing seats for contact with an associated one of said support saddle load bearing surfaces, each of said bearing shells having an arcuate length less than an arcuate length of said associated one of said support saddle load bearing surfaces.
Claim 8
Dependent Claim
23 words
An axial piston pump according to claim 5 wherein each of said bearing shells is attached to said swash block by a pin.
Claim 9
Dependent Claim
30 words
An axial piston pump according to claim 5 including a control linkage coupled to said swash block for angularly positioning said bearing shells along said support saddle load bearing surfaces.
Claim 10
Dependent Claim
123 words
An axial piston pump for pumping fluid comprising: a housing; a support saddle mounted inside said housing and having at least one arcuate load bearing surface; a swash block mounted inside said housing adjacent said support saddle and having at least one arcuate bearing seat; an arcuate bearing shell attached to said bearing seat and having an arcuate bearing surface in contact with said load bearing surface, said arcuate bearing surface having an arcuate length less than an arcuate length of said load bearing surface; and means for moving said swash block relative to said support saddle whereby said arcuate bearing surface remains in complete contact with said load bearing surface in all relative positions of said swash block and said support saddle.
Claim 11
Dependent Claim
123 words
An axial piston pump for pumping fluid comprising: a housing; a support saddle mounted inside said housing and having at least one arcuate load bearing surface; a swash block mounted inside said housing adjacent said support saddle and having at least one arcuate bearing seat; an arcuate bearing shell attached to said bearing seat and having an arcuate bearing surface in contact with said load bearing surface, said arcuate bearing surface having an arcuate length less than an arcuate length of said load bearing surface; and means for moving said swash block relative to said support saddle whereby said arcuate bearing surface remains in complete contact with said load bearing surface in all relative positions of said swash block and said support saddle.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-01-29 | 1993-07-31 | 1994-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-29 | 1997-07-31 | 1998-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-29 | 2001-07-31 | 2002-01-30 | $7700.00 | Window Closed / Lapsed |