Patent US3650583A successfully refreshed from Google Patents.
US3650583A
Expired / Lapsed
US
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Antifriction thrust bearing of a rotary table
Assignee: Individual
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Filing: 1970-11-24
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Granted: 1972-03-21
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Expires: 1990-11-24
Abstract
Abstract An antifriction thrust bearing for a rotary table is constituted by a double-row bearing having an intermediate race rigidly connected through dimensioned inserts with a portion of the rotary table which is uppermost when in the working position, while the outer or upper and lower races are mounted on the lathe pillar relative to which the table rotates, with the upper race being capable of an axial displacement in a direction towards the lower race. The invention can be most effectively used in vertical multispindle lathes.
Inventors
- 👤 Artur Markovich Itin
- 👤 Jury Mikhailovich Zhed
- 👤 Vladimir Lvovich Nazarov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:50
CPC Classifications
F; F16; F16C; F16C19/00; F16C19/02; F16C19/10; B; B23; B23Q; B23Q1/00; B23Q1/25; B23Q1/26; B23Q1/262; B23Q1/265; F16C2322/00; F16C2322/39
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
An antifriction thrust bearing for a rotary table mounted with its centrally disposed conical opening on a tapered portion of a pillar of a vertical multispindle lathe to allow adjustment of the gap between their mated conical surfaces, said bearing being defined as a double-row bearing and comprising: upper, intermediate and lower races; rolling bodies arranged between the upper and intermediate races and the intermediate and lower races; shims insertable between the intermediate races and a portion of the rotary table which is uppermost when in the working position serving to preset the value of the gap between said mated conical surfaces of said table and pillar; said upper and lower races, when in the working position, being mounted on said pillar to permit the upper race to move in an axial direction towards the lower race for developing tightness in the bearing; and said intermediate race being connected rigidly to the uppermost portion of said rotary table through said insertable shims.
Claim 2
Dependent Claim
162 words
An antifriction thrust bearing for a rotary table mounted with its centrally disposed conical opening on a tapered portion of a pillar of a vertical multispindle lathe to allow adjustment of the gap between their mated conical surfaces, said bearing being defined as a double-row bearing and comprising: upper, intermediate and lower races; rolling bodies arranged between the upper and intermediate races and the intermediate and lower races; shims insertable between the intermediate races and a portion of the rotary table which is uppermost when in the working position serving to preset the value of the gap between said mated conical surfaces of said table and pillar; said upper and lower races, when in the working position, being mounted on said pillar to permit the upper race to move in an axial direction towards the lower race for developing tightness in the bearing; and said intermediate race being connected rigidly to the uppermost portion of said rotary table through said insertable shims.
References Cited (Backward Citations)
US3030158A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-21 | 1975-09-20 | 1976-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-21 | 1979-09-20 | 1980-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-21 | 1983-09-20 | 1984-03-21 | $7700.00 | Window Closed / Lapsed |