US3796510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaft mounting for water pumps and the like
Assignee: IHO Holding GmbH and Co KG
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Filing: 1972-06-28
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Granted: 1974-03-12
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Expires: 1992-06-28
Abstract
Abstract The shaft of a pump, carrying an impeller, is supported in a bearing cylinder of a housing by a generally cylindrical bushing, press-fitted into that cylinder, whose inner peripheral surface diverges frustoconically outwardly at both ends. Two sets of frustoconical bearing rollers, with their wider bases facing outwardly, are wedged in between the shaft surface and the tapering bushing extremities and are held in place by two annular abutments, at least one of which is a ring fitted onto the shaft while the other one may be a shoulder integral therewith; flexible sealing rings at the ends of the bushing sweep the surfaces of these abutments.
Inventors
- 👤 H Korrenn
- 👤 G Markfelder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:58
CPC Classifications
F; F16; F16C; F16C19/00; F16C19/22; F16C19/24; F16C19/28; F16C2360/00; F16C2360/44; F16C33/00; F16C33/30; F16C33/34; F16C33/36; F16C33/366; F16C33/58; F16C33/60; F16C33/605
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
146 words
An assembly comprising a housing forming a bearing cylinder, a rotary shaft received with clearance in said cylinder, a bushing with symmetrically internally tapered extremities diverging frustoconically toward the shaft ends, said bushing being fitted into said cylinder in spaced relationship with said shaft, two sets of frustoconical bearing rollers with axially outwardly facing wider ends wedged into the space between said shaft and said extremities, and a pair of raised formations on said shaft defining annular shoulders engaging the wider ends of said bearing rollers for holding same in contact with the surfaces of said shaft and said bushing, said shaft at least in the regions of said rollers having cylindrical peripheries in direct contact with said bearing rollers, the axial position of said bushing relative to said shaft being maintained solely by the engagement of the frustoconical roller surfaces with said internally tapered extremities.
Claim 2
Dependent Claim
146 words
An assembly comprising a housing forming a bearing cylinder, a rotary shaft received with clearance in said cylinder, a bushing with symmetrically internally tapered extremities diverging frustoconically toward the shaft ends, said bushing being fitted into said cylinder in spaced relationship with said shaft, two sets of frustoconical bearing rollers with axially outwardly facing wider ends wedged into the space between said shaft and said extremities, and a pair of raised formations on said shaft defining annular shoulders engaging the wider ends of said bearing rollers for holding same in contact with the surfaces of said shaft and said bushing, said shaft at least in the regions of said rollers having cylindrical peripheries in direct contact with said bearing rollers, the axial position of said bushing relative to said shaft being maintained solely by the engagement of the frustoconical roller surfaces with said internally tapered extremities.
Claim 3
Dependent Claim
24 words
An assembly as defined in claim 1 wherein at least one of said raised formations is a rigid ring fixedly secured to said shaft.
Claim 4
Dependent Claim
17 words
An assembly as defined in claim 1, further comprising sealing means on said bushing surrounding said shoulders.
Claim 5
Dependent Claim
24 words
An assembly as defined in claim 3 wherein saiD sealing means are a pair of flexible rings on said bushing sweeping said raised formations.
Claim 6
Dependent Claim
20 words
An assembly as defined in claim 1 wherein said shaft has a pair of free ends projecting from said cylinder.
Claim 7
Dependent Claim
37 words
An assembly as defined in claim 5 wherein said shaft is provided with drive means on one of its free ends and with a load on its other free end exerting an axial thrust upon the shaft.
Claim 8
Dependent Claim
17 words
An assembly as defined in claim 6 wherein said load comprises an impeller of a fluid-circulating pump.
Claim 9
Dependent Claim
22 words
An assembly as defined in claim 7 wherein said housing forms intake and discharge ports for the fluid circulated by said impeller.
References Cited (Backward Citations)
US1304430A
Cited
US1817169A
Cited
US2365065A
Cited
US2542902A
Cited
US2656734A
Cited
US2664325A
Cited
US3632220A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |