Patent US3311025A successfully refreshed from Google Patents.
US3311025A
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Assignee: Kearney and Trecker Corp
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Filing: 1965-09-16
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Granted: 1967-03-28
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Expires: 1985-09-16
Abstract
No abstract record available.
Inventors
- 👤 Zankl Frank
- 👤 Richard E Stobbe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:42
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/416; G05B19/4163; B; B23; B23Q; B23Q1/00; B23Q1/25; B23Q3/00; B23Q3/155; B23Q3/157; B23Q3/15713; B23Q2701/00; B23Q2701/02; G05B2219/00; G05B2219/30; G05B2219/41; G05B2219/41461; G05B2219/42; G05B2219/42205; G05B2219/43; G05B2219/43158; G05B2219/49; G05B2219/49078; G05B2219/49092; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T409/300896; Y10T409/304536; Y10T409/304648; Y10T409/304704
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
IN A MACHINE TOOL HAVING A ROTATABLE TOOL SPINDLE AND A RELATIVELY MOVABLE WORK SUPPORT; A VARIABLE SPEED HYDRAULIC DRIVE SYSTEM OPERATIVE TO ROTATE SAID SPINDLE AT A PRESELECTED RATE; A VARIABLE SPEED FEED DRIVE MECHANISM OPERATIVE TO MOVE SAID WORK SUPPORT AT A PRESELECTED FEED RATE FOR MOVING A WORKPIECE CARRIED BY SAID WORK SUPPORT INTO CUTTING ENGAGEMENT WITH A CUTTER CARRIED BY SAID TOOL SPINDLE; A PRESSURE SWITCH INTERCONNECTED IN SAID HYDRAULIC DRIVE SYSTEM FOR SAID SPINDLE SAID SWITCH BEING OPEN DURING A NORMAL MACHINING OPERATION, BUT BEING PRESET FOR ACTUATION UPON THE OCCURRENCE OF AN ABNORMAL LOAD ON SAID SPINDLE DRIVE SYSTEM, AND A FEED RATE CONTROLLER SEPARATE FROM SAID DRIVE SYSTEMS AND OPERATIVE TO REDUCE THE PRESELECTED FEED RATE OF SAID VARIABLE FEED DRIVE MECHANISM UPON BEING
Claim 2
Dependent Claim
131 words
IN A MACHINE TOOL HAVING A ROTATABLE TOOL SPINDLE AND A RELATIVELY MOVABLE WORK SUPPORT; A VARIABLE SPEED HYDRAULIC DRIVE SYSTEM OPERATIVE TO ROTATE SAID SPINDLE AT A PRESELECTED RATE; A VARIABLE SPEED FEED DRIVE MECHANISM OPERATIVE TO MOVE SAID WORK SUPPORT AT A PRESELECTED FEED RATE FOR MOVING A WORKPIECE CARRIED BY SAID WORK SUPPORT INTO CUTTING ENGAGEMENT WITH A CUTTER CARRIED BY SAID TOOL SPINDLE; A PRESSURE SWITCH INTERCONNECTED IN SAID HYDRAULIC DRIVE SYSTEM FOR SAID SPINDLE SAID SWITCH BEING OPEN DURING A NORMAL MACHINING OPERATION, BUT BEING PRESET FOR ACTUATION UPON THE OCCURRENCE OF AN ABNORMAL LOAD ON SAID SPINDLE DRIVE SYSTEM, AND A FEED RATE CONTROLLER SEPARATE FROM SAID DRIVE SYSTEMS AND OPERATIVE TO REDUCE THE PRESELECTED FEED RATE OF SAID VARIABLE FEED DRIVE MECHANISM UPON BEING
References Cited (Backward Citations)
US2905411A
Cited
US3247912A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-27 | 1970-09-26 | 1971-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-27 | 1974-09-26 | 1975-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-27 | 1978-09-26 | 1979-03-28 | $7700.00 | Window Closed / Lapsed |