US3177745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spindle center and driver
Assignee: Devlieg Bullard Inc
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Filing: 1962-09-25
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Granted: 1965-04-13
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Expires: 1982-09-25
Abstract
No abstract record available.
Inventors
- 👤 Sr Harry W Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:15
CPC Classifications
B; B23; B23B; B23B33/00; B23B33/005; Y; Y10; Y10T; Y10T82/00; Y10T82/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A SPINDLE CENTER AND DRIVER COMPRISING, IN COMBINATION, A FRAME, A SPINDLE JOURNALLED IN SAID FRAME FOR ROTATION ABOUT AN AXIS, A CENTER AXIALLY MOVABLE IN SAID SPINDLE, HYDRAULIC MEANS INCLUDING A MOVABLE PISTON TO MOVE SAID CENTER IN A FORWARD AXIAL DIRECTION, A PLURALITY OF MOVABLE DRIVER PLUNGERS CARRIED IN SAID PISTON SPACED AROUND SAID CENTER, SAID HYDRAULIC MEANS INDEPENDENTLY MOVING SAID DRIVER PLUNGERS IN A FORWARD AXIAL DIRECTION, MEANS TO MOVES SAID CENTER IN A REARWARD AXIAL DIRECTION, AND MECHANICAL MEANS COACTING WITH REARWARD MOVEMENT OF SAID CENTER TO MOVE SAID DRIVER PLUNGERS IN A REARWARD AXIAL DIRECTION.
Claim 2
Dependent Claim
100 words
A SPINDLE CENTER AND DRIVER COMPRISING, IN COMBINATION, A FRAME, A SPINDLE JOURNALLED IN SAID FRAME FOR ROTATION ABOUT AN AXIS, A CENTER AXIALLY MOVABLE IN SAID SPINDLE, HYDRAULIC MEANS INCLUDING A MOVABLE PISTON TO MOVE SAID CENTER IN A FORWARD AXIAL DIRECTION, A PLURALITY OF MOVABLE DRIVER PLUNGERS CARRIED IN SAID PISTON SPACED AROUND SAID CENTER, SAID HYDRAULIC MEANS INDEPENDENTLY MOVING SAID DRIVER PLUNGERS IN A FORWARD AXIAL DIRECTION, MEANS TO MOVES SAID CENTER IN A REARWARD AXIAL DIRECTION, AND MECHANICAL MEANS COACTING WITH REARWARD MOVEMENT OF SAID CENTER TO MOVE SAID DRIVER PLUNGERS IN A REARWARD AXIAL DIRECTION.
References Cited (Backward Citations)
US2643571A
Cited
US3052272A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |