Patent US3109319A successfully refreshed from Google Patents.
US3109319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Back gear control for lathe drive
Assignee: Rockwell Manufacturing Co
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Filing: 1960-06-08
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Granted: 1963-11-05
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Expires: 1980-06-08
Abstract
No abstract record available.
Inventors
- 👤 Gilbert L Pierce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:05
CPC Classifications
B; B23; B23Q; B23Q5/00; B23Q5/02; B23Q5/04; B23Q5/12; B23Q5/14; B23Q5/142; B23Q2705/00; B23Q2705/02; B23Q2705/06; B23Q2705/062; B23Q2705/064; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19614; Y10T82/00; Y10T82/25; Y10T82/2552; Y10T82/2554
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
IN A MACHINE TOOL HAVING MOTOR MEANS, A POWER TRANSMISSION INCLUDING AN INPUT POWER MEMBER DRIVEN BY SAID MOTOR MEANS, A DRIVEN SPINDLE AND BACK GEARS AND A TRANSMISSION HOUSING INCLUDING A PIVOTED COVER MOVABLE BETWEEN OPEN AND CLOSED POSITIONS: CONTROL MEANS FOR SELECTIVELY CONNECTING AND DISCONNECTING SAID BACK GEARS TO PROVIDE RESPECTIVE ALTERNATIVE SPEED RATIO DRIVE CONNECTIONS BETWEEN SAID INPUT POWER MEMBER AND SAID DRIVEN SPINDLE COMPRISING A SWINGABLE BACK GEAR SUPPORT STRUCTURE; AN AXIALLY SHIFTABLE MEMBER CONNECTED TO SAID SUPPORT STRUCTURE AND MOVABLE BETWEEN BACK GEAR ENGAGED AND DISENGAGED POSITIONS; LOCKING MEANS FOR PREVENTING MOVEMENT OF SAID AXIALLY SHIFTABLE MEMBER WHEN SAID COVER IS CLOSED; AND MEANS ACTUATED UPON OPENING OF SAID COVER TO INTERRUPT OPERATION OF SAID MOTOR MEANS AND RELEASE SAID LOCKING MEANS TO THEREBY ASSURE MOVEMENT OF SAID SHIFTABLE MEMBER ONLY DURING INOPERATIVE PERIODS OF SAID MOTOR MEANS.
Claim 2
Dependent Claim
143 words
IN A MACHINE TOOL HAVING MOTOR MEANS, A POWER TRANSMISSION INCLUDING AN INPUT POWER MEMBER DRIVEN BY SAID MOTOR MEANS, A DRIVEN SPINDLE AND BACK GEARS AND A TRANSMISSION HOUSING INCLUDING A PIVOTED COVER MOVABLE BETWEEN OPEN AND CLOSED POSITIONS: CONTROL MEANS FOR SELECTIVELY CONNECTING AND DISCONNECTING SAID BACK GEARS TO PROVIDE RESPECTIVE ALTERNATIVE SPEED RATIO DRIVE CONNECTIONS BETWEEN SAID INPUT POWER MEMBER AND SAID DRIVEN SPINDLE COMPRISING A SWINGABLE BACK GEAR SUPPORT STRUCTURE; AN AXIALLY SHIFTABLE MEMBER CONNECTED TO SAID SUPPORT STRUCTURE AND MOVABLE BETWEEN BACK GEAR ENGAGED AND DISENGAGED POSITIONS; LOCKING MEANS FOR PREVENTING MOVEMENT OF SAID AXIALLY SHIFTABLE MEMBER WHEN SAID COVER IS CLOSED; AND MEANS ACTUATED UPON OPENING OF SAID COVER TO INTERRUPT OPERATION OF SAID MOTOR MEANS AND RELEASE SAID LOCKING MEANS TO THEREBY ASSURE MOVEMENT OF SAID SHIFTABLE MEMBER ONLY DURING INOPERATIVE PERIODS OF SAID MOTOR MEANS.
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) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |