Patent US3728636A successfully refreshed from Google Patents.
Patent US3101019A successfully refreshed from Google Patents.
US3101019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lathe tailstock device
Assignee: Ernault Batignolles S A H
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Filing: 1958-05-19
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Granted: 1963-08-20
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Expires: 1978-05-19
Abstract
No abstract record available.
Inventors
- 👤 Lan Armand Marcel Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:26
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/12; B23B31/16; B23B31/16195; B23B31/16216; B23B31/1622; B23B13/00; B23B13/02; B23B13/021; Y; Y10; Y10T; Y10T82/00; Y10T82/25; Y10T82/2514; Y10T82/2521
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
180 words
IN A MACHINE TOOL HAVING A HEAD STOCK PROVIDED WITH A ROTARY CHUCK FOR HOLDING A WORK PIECE AND A TOOL SLIDE STRUCTURE, A TAIL STOCK INCLUDING A ROTARY AND AXIALLY MOVABLE HOLLOW SPINDLE ADAPTED TO RECEIVE SAID WORK PIECE, A GRIPPING DEVICE CARRIED BY SAID SPINDLE AND INCLUDING RADIALLY MOVABLE WORK-ENGAGING MEMBERS, AND MEANS FOR OPERATING SAID GRIPPING DEVICE INTO AND OUT OF OPERATIVE POSITION, THE IMPROVEMENT COMPRISING FLUID-OPERATED MEANS TO MOVE SAID SPINDLE LENGTHWISE TOWARD AND AWAY FROM SAID CHUCK, A VALVE MECHANISM INCLUDING A MOVABLE VALVE ACTUATING ELEMENT FOR CONTROLLING THE FLOW OF FLUID TOWARD AND FROM SAID FLUID OPERATED MEANS, A STOP MEMBER MOUNTED ON SAID SPINDLE, A ROTATABLE AND AXIALLY MOVABLE SHAFT OPERATIVELY CONNECTED WITH SAID VALVE ACTUATING ELEMENT FOR AXIAL MOVEMENT THEREWITH, A PLURALITY OF AXIALLY AND CIRCUMFERENTIALLY SPACED ABUTMENT MEMBERS ON SAID SHAFT, AND MEANS TO ROTATE SAID SHAFT SO AS TO MOVE SAID ABUTMENT MEMBERS INTO SUCCESSIVE ALIGNMENT WITH SAID STOP MEMBER TO THEREBY ESTABLISH PREDETERMINED LIMITS OF ADVANCE MOVEMENT OF SAID SPINDLE AND CONSEQUENTLY OF SAID GRIPPING DEVICE TOWARD SAID CHUCK.
Claim 2
Dependent Claim
180 words
IN A MACHINE TOOL HAVING A HEAD STOCK PROVIDED WITH A ROTARY CHUCK FOR HOLDING A WORK PIECE AND A TOOL SLIDE STRUCTURE, A TAIL STOCK INCLUDING A ROTARY AND AXIALLY MOVABLE HOLLOW SPINDLE ADAPTED TO RECEIVE SAID WORK PIECE, A GRIPPING DEVICE CARRIED BY SAID SPINDLE AND INCLUDING RADIALLY MOVABLE WORK-ENGAGING MEMBERS, AND MEANS FOR OPERATING SAID GRIPPING DEVICE INTO AND OUT OF OPERATIVE POSITION, THE IMPROVEMENT COMPRISING FLUID-OPERATED MEANS TO MOVE SAID SPINDLE LENGTHWISE TOWARD AND AWAY FROM SAID CHUCK, A VALVE MECHANISM INCLUDING A MOVABLE VALVE ACTUATING ELEMENT FOR CONTROLLING THE FLOW OF FLUID TOWARD AND FROM SAID FLUID OPERATED MEANS, A STOP MEMBER MOUNTED ON SAID SPINDLE, A ROTATABLE AND AXIALLY MOVABLE SHAFT OPERATIVELY CONNECTED WITH SAID VALVE ACTUATING ELEMENT FOR AXIAL MOVEMENT THEREWITH, A PLURALITY OF AXIALLY AND CIRCUMFERENTIALLY SPACED ABUTMENT MEMBERS ON SAID SHAFT, AND MEANS TO ROTATE SAID SHAFT SO AS TO MOVE SAID ABUTMENT MEMBERS INTO SUCCESSIVE ALIGNMENT WITH SAID STOP MEMBER TO THEREBY ESTABLISH PREDETERMINED LIMITS OF ADVANCE MOVEMENT OF SAID SPINDLE AND CONSEQUENTLY OF SAID GRIPPING DEVICE TOWARD SAID CHUCK.
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) | 1966-08-19 | 1967-02-18 | 1967-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-19 | 1971-02-18 | 1971-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-19 | 1975-02-18 | 1975-08-20 | $7700.00 | Window Closed / Lapsed |