US3247912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-hydraulic control for machine tools
Assignee: DYNA SYSTEMS Inc
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Filing: 1963-03-19
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Granted: 1966-04-26
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Expires: 1983-03-19
Abstract
No abstract record available.
Inventors
- 👤 Rollin A Reynolds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:41
CPC Classifications
B; B23; B23Q; B23Q15/00; B23Q11/00; B23Q11/04; B23Q15/007; B23Q15/12; F; F15; F15B; F15B11/00; F15B11/02; F15B21/00; F15B21/08; F15B21/087; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0675; F15B2211/00; F15B2211/20; F15B2211/205; F15B2211/2053; F15B2211/30; F15B2211/305; F15B2211/30505; F15B2211/30525; F15B2211/31; F15B2211/3105; F15B2211/3111; F15B2211/315; F15B2211/3157; F15B2211/31576; F15B2211/40; F15B2211/405; F15B2211/40515; F15B2211/42; F15B2211/426; F15B2211/45; F15B2211/60; F15B2211/665; F15B2211/6654; F15B2211/70; F15B2211/705; F15B2211/7051; F15B2211/7053; F15B2211/7054; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7782; Y10T408/00; Y10T408/16; Y10T408/17; Y10T82/00; Y10T82/25; Y10T82/2531; Y10T82/2533
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
ELECTRO-HYDRAULIC CONTROL FOR MACHINE TOOLS, COMPRISING: A WORKPIECE; A TOOL OPERATIVE ON THE WORKPIECE; A SOURCE OF FLUID PRESSURE; FLUID CYLINDER POWER MEANS SELECTIVELY ENERGIZAZBLE TO RELATIVELY MOVE THE WORK PIECE AND TOOL FOR FEEDING AND NON-FEEDING OPERATIONS; A REVERSING VALVE SELECTIVELY OPERABLE TO CONNECT SAID POWER MEANS WITH SAID SOURCE FOR FEEDING AND NON-FEEDING OPERATIONS; SERVO REGULATOR MEANS INCLUDING A RESILIENTLY SUSPENDED VALVE MEMBER CONTROLLING THE FLUID SUPPLY TO SAID POWER MEANS FROM SAID SOURCE DURING ITS CONNECTION FOR A FEEDING OPERATION; A TOOL ACTUATING MOTOR HAVING AN ENERGIZING CIRCUIT; MEAN IN SAID ENERGIZING CIRCUIT FOR GENERATING A PULSING SIGNAL IN ACCORDANCE WITH THE VALUE OF THE LOAD CURRENT OF SAID MOTOR; AND ELECTROMAGNETIC MEANS FOR ADJUSTABLY POSITIONING SAID VALVE MEMBER IN ACCORDANCE WITH SAID SIGNAL.
Claim 2
Dependent Claim
127 words
ELECTRO-HYDRAULIC CONTROL FOR MACHINE TOOLS, COMPRISING: A WORKPIECE; A TOOL OPERATIVE ON THE WORKPIECE; A SOURCE OF FLUID PRESSURE; FLUID CYLINDER POWER MEANS SELECTIVELY ENERGIZAZBLE TO RELATIVELY MOVE THE WORK PIECE AND TOOL FOR FEEDING AND NON-FEEDING OPERATIONS; A REVERSING VALVE SELECTIVELY OPERABLE TO CONNECT SAID POWER MEANS WITH SAID SOURCE FOR FEEDING AND NON-FEEDING OPERATIONS; SERVO REGULATOR MEANS INCLUDING A RESILIENTLY SUSPENDED VALVE MEMBER CONTROLLING THE FLUID SUPPLY TO SAID POWER MEANS FROM SAID SOURCE DURING ITS CONNECTION FOR A FEEDING OPERATION; A TOOL ACTUATING MOTOR HAVING AN ENERGIZING CIRCUIT; MEAN IN SAID ENERGIZING CIRCUIT FOR GENERATING A PULSING SIGNAL IN ACCORDANCE WITH THE VALUE OF THE LOAD CURRENT OF SAID MOTOR; AND ELECTROMAGNETIC MEANS FOR ADJUSTABLY POSITIONING SAID VALVE MEMBER IN ACCORDANCE WITH SAID SIGNAL.
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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) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |