Patent US4133230A successfully refreshed from Google Patents.
US4133230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine tool
Assignee: Fanuc Corp
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Filing: 1977-05-31
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Granted: 1979-01-09
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Expires: 1997-05-31
Abstract
Abstract Disclosed herein is a machine tool consisting of a bed, a fast head stock mounted on the bed and a main spindle rotatably supported by the fast head stock, and wherein the main spindle is an integral part of an output shaft of an electric motor.
Inventors
- 👤 Seiuemon Inaba
- 👤 Tokiji Shimajiri
- 👤 Shigeaki Oyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:27
CPC Classifications
B; B23; B23Q; B23Q11/00; B23Q11/12; B23Q11/126; B23Q11/127; B23Q5/00; B23Q5/02; B23Q5/04; B23Q5/10; Y; Y10; Y10S; Y10S82/00; Y10S82/90; Y10T; Y10T82/00; Y10T82/25; Y10T82/2552
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
135 words
A machine tool, comprising: a bed; a head stock mounted on said bed; a main spindle rotatably mounted on said head stock, said main spindle being provided with a conduit constructed integrally therewith, extending outwardly therefrom, and terminating in an end; armature windings rigidly secured to said main spindle; field means for producing a magnetic field arranged around said armature windings and spaced therefrom; means for supplying electric power to said armature windings; an air flow chanber having at least one air shot, said end of said conduit being positioned within said air flow chamber; a fan mounted within said air flow chamber; working fluid means contained within said conduit for conducting heat generated in said armature windings from said main spindle; and at least one fin provided on said conduit near said end thereof.
Claim 2
Dependent Claim
135 words
A machine tool, comprising: a bed; a head stock mounted on said bed; a main spindle rotatably mounted on said head stock, said main spindle being provided with a conduit constructed integrally therewith, extending outwardly therefrom, and terminating in an end; armature windings rigidly secured to said main spindle; field means for producing a magnetic field arranged around said armature windings and spaced therefrom; means for supplying electric power to said armature windings; an air flow chanber having at least one air shot, said end of said conduit being positioned within said air flow chamber; a fan mounted within said air flow chamber; working fluid means contained within said conduit for conducting heat generated in said armature windings from said main spindle; and at least one fin provided on said conduit near said end thereof.
Claim 3
Dependent Claim
25 words
A machine tool as set forth in claim 1, further comprising means rigidly mounted on one end of said main spindle for holding a workpiece.
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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) | 1982-01-08 | 1982-07-10 | 1983-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-08 | 1986-07-10 | 1987-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-08 | 1990-07-10 | 1991-01-09 | $7700.00 | Window Closed / Lapsed |