US3171331A
Expired / Lapsed
US
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Control apparatus
Assignee: Centec Machine Tools Ltd
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Filing: 1963-12-26
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Granted: 1965-03-02
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Expires: 1983-12-26
Abstract
No abstract record available.
Inventors
- 👤 Samuel Walter Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:45
CPC Classifications
B; B23; B23Q; B23Q5/00; B23Q5/22; B23Q5/26; F; F15; F15B; F15B11/00; F15B11/02; F15B11/028; F15B11/036; F15B11/04; F15B11/042; F15B2211/00; F15B2211/20; F15B2211/205; F15B2211/20507; F15B2211/20515; F15B2211/2053; F15B2211/20538; F15B2211/30; F15B2211/305; F15B2211/30525; F15B2211/3056; F15B2211/30565; F15B2211/31; F15B2211/3105; F15B2211/3111; F15B2211/32; F15B2211/327; F15B2211/40; F15B2211/405; F15B2211/40507; F15B2211/40515; F15B2211/415; F15B2211/41554; F15B2211/42; F15B2211/426; F15B2211/45; F15B2211/46; F15B2211/50; F15B2211/505; F15B2211/50509; F15B2211/50536; F15B2211/55; F15B2211/60; F15B2211/615; F15B2211/63; F15B2211/6303; F15B2211/6306; F15B2211/6309; F15B2211/70; F15B2211/705; F15B2211/7051; F15B2211/7055; F15B2211/75
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
215 words
IN A MACHINE TOOL HAVING A SUPPORT FOR A WORK-PIECE AND A SUPPORT FOR A TOOL, CONTROL APPARATUS FOR CONTROLLING THE MOVEMENT OF ONE OF SAID SUPPORTS AT EITHER OF TWO DIFFERENT SPEEDS, COMPRISING: TWO CYLINDER AND PISTON ASSEMBLIES OF EACH OF WHICH EITHER THE PISTON OR THE CYLINDER IS CONNECTED TO SAID SUPPORT WITH SUCH ASSEMBLIES IN SUBSTANTIAL ALIGNMENT WITH THE DESIRED DIRECTION OF MOVEMENT OF THE SUPPORT; A WORKING FLUID RESERVOIR; MEANS WHEREBY WORKING FLUID MAY BE FED FROM SAID RESERVOIR AT A CONSTANT VOLUME RATE TO A FIRST COMBINATION OF ONE FACE OF ONE PISTON AND ONE FACE OF THE OTHER PISTON WHICH WILL BOTH URGE SAID SUPPORT IN THE SAME DIRECTION; AND MEANS WHEREBY WORKING FLUID MAY BE FED FROM SAID RESERVOIR AT A CONSTANT VOLUME RATE TO A SECOND COMBINATION OF ONE FACE OF ONE PISTON AND ONE FACE OF THE OTHER PISTON WHICH WILL URGE SAID SUPPORT IN OPPOSITE DIRECTIONS; THE PAIR OF PISTON FACES ACTED UPON BY THE WORKING FLUID IN SAID SECOND COMBINATION BEING OF MUTUALLY DIFFERENT EFFECTIVE AREAS AND BEING SO ARRANGED THAT THE TOTAL EFFECT OF OPERATION ON SAID SECOND COMBINATION IS TO MOVE SAID SUPPORT IN HE SAME DIRECTION AS IN SAID FIRST COMBINATION BUT A DIFFERENT SPEED FROM THAT PRODUCED BY THE LATTER.
Claim 2
Dependent Claim
215 words
IN A MACHINE TOOL HAVING A SUPPORT FOR A WORK-PIECE AND A SUPPORT FOR A TOOL, CONTROL APPARATUS FOR CONTROLLING THE MOVEMENT OF ONE OF SAID SUPPORTS AT EITHER OF TWO DIFFERENT SPEEDS, COMPRISING: TWO CYLINDER AND PISTON ASSEMBLIES OF EACH OF WHICH EITHER THE PISTON OR THE CYLINDER IS CONNECTED TO SAID SUPPORT WITH SUCH ASSEMBLIES IN SUBSTANTIAL ALIGNMENT WITH THE DESIRED DIRECTION OF MOVEMENT OF THE SUPPORT; A WORKING FLUID RESERVOIR; MEANS WHEREBY WORKING FLUID MAY BE FED FROM SAID RESERVOIR AT A CONSTANT VOLUME RATE TO A FIRST COMBINATION OF ONE FACE OF ONE PISTON AND ONE FACE OF THE OTHER PISTON WHICH WILL BOTH URGE SAID SUPPORT IN THE SAME DIRECTION; AND MEANS WHEREBY WORKING FLUID MAY BE FED FROM SAID RESERVOIR AT A CONSTANT VOLUME RATE TO A SECOND COMBINATION OF ONE FACE OF ONE PISTON AND ONE FACE OF THE OTHER PISTON WHICH WILL URGE SAID SUPPORT IN OPPOSITE DIRECTIONS; THE PAIR OF PISTON FACES ACTED UPON BY THE WORKING FLUID IN SAID SECOND COMBINATION BEING OF MUTUALLY DIFFERENT EFFECTIVE AREAS AND BEING SO ARRANGED THAT THE TOTAL EFFECT OF OPERATION ON SAID SECOND COMBINATION IS TO MOVE SAID SUPPORT IN HE SAME DIRECTION AS IN SAID FIRST COMBINATION BUT A DIFFERENT SPEED FROM THAT PRODUCED BY THE LATTER.
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) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |