Patent US3635532A successfully refreshed from Google Patents.
US3635532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrostatically supported machine tool slide
Assignee: SKF Industrie SpA
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Filing: 1970-02-04
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Granted: 1972-01-18
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Expires: 1990-02-04
Abstract
Abstract A hydrostatically supported machine tool slide has two spacedapart bilateral cylindrical hydrostatic bearings for longitudinal movement of the slide along a guide shaft fixed to a bed, together with a bilateral flat hydrostatic bearing acting on a member of the bed to prevent rotation of the slide about the axis of the cylindrical bearing, affording a three-point isostatic support.
Inventors
- 👤 Giorgio Zerbola
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:57
CPC Classifications
F; F16; F16C; F16C32/00; F16C32/06; B; B23; B23Q; B23Q1/00; B23Q1/25; B23Q1/26; B23Q1/38; F16C29/00; F16C29/02; F16C29/025; F16C2322/00; F16C2322/39
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
In a machine tool having a bed, a shaft fixed in said bed, a slide having a bore therethrough receiving said shaft for sliding movement of said slide on said shaft, two cylindrical hydrostatic bearings located in said bore around said shaft in axially spaced relation to each other, each of said cylindrical hydrostatic bearings having a plurality of hydrostatic pressure pads spaced apart about the circumference of said shaft, a slot member, a tongue member extending into said slot member, one of said members being disposed on said slide and the other of said members being disposed on said bed to prevent rotation of said slide about said shaft, the member disposed on said slide having a single hydrostatic bearing in the form of a pair of flat parallel pressure pads acting on flat parallel surfaces of said other member, the tip of said tongue member being spaced from the base of said slot member to provide clearance therebetween.
Claim 2
Dependent Claim
160 words
In a machine tool having a bed, a shaft fixed in said bed, a slide having a bore therethrough receiving said shaft for sliding movement of said slide on said shaft, two cylindrical hydrostatic bearings located in said bore around said shaft in axially spaced relation to each other, each of said cylindrical hydrostatic bearings having a plurality of hydrostatic pressure pads spaced apart about the circumference of said shaft, a slot member, a tongue member extending into said slot member, one of said members being disposed on said slide and the other of said members being disposed on said bed to prevent rotation of said slide about said shaft, the member disposed on said slide having a single hydrostatic bearing in the form of a pair of flat parallel pressure pads acting on flat parallel surfaces of said other member, the tip of said tongue member being spaced from the base of said slot member to provide clearance therebetween.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |