Patent US3677115A successfully refreshed from Google Patents.
US3677115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulically operated tool compensator unit
Assignee: Cross Co
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Filing: 1970-03-16
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Granted: 1972-07-18
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Expires: 1990-03-16
Abstract
Abstract Hydraulically operated apparatus for periodically moving a machine tool to compensate for conditions such as tool wear and automatically maintain a pre-established position of the tool within predetermined tolerance limits. In response to a signal indicating the necessity for resetting the cutting tool to move it either toward or away from the work, a metering device admits a predetermined volume of fluid to a piston and cylinder assembly to provide for adjusted movement of the tool through a predetermined incremental distance.
Inventors
- 👤 James A Skrentner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:19
CPC Classifications
B; B23; B23Q; B23Q1/00; B23Q1/25; B23Q1/44; B23Q1/56; B23Q1/58; B23Q1/26; B23Q1/34; B23Q1/36; B23Q5/00; B23Q5/22; B23Q5/26; B23Q2210/00; B23Q2210/002; Y; Y10; Y10T; Y10T82/00; Y10T82/25; Y10T82/2531; Y10T82/2541
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
170 words
In a machine tool resetting apparatus for automatically moving a machine tool back and forth in a pre-established direction, a body, plunger means having an axis and being mounted on said body for movement along said axis in said direction, means forming a bore in said body extending transversely of said plunger means, piston means slidably mounted in said bore, a surface on said piston means inclined in said pre-established direction, said surface being engaged with said plunger means and operable on movement of said piston means in one direction to move said plunger means in said direction along said axis, and means for introducing fluid under pressure into said bore so as to move said piston means back and forth in said bore comprising pump means, conduit means connecting said pump means and said bore and a metering device interposed in said conduit means and operable to admit fluid to said bore only in predetermined volumetric increments for achieving movement of said piston means in predetermined increments of distance.
Claim 2
Dependent Claim
170 words
In a machine tool resetting apparatus for automatically moving a machine tool back and forth in a pre-established direction, a body, plunger means having an axis and being mounted on said body for movement along said axis in said direction, means forming a bore in said body extending transversely of said plunger means, piston means slidably mounted in said bore, a surface on said piston means inclined in said pre-established direction, said surface being engaged with said plunger means and operable on movement of said piston means in one direction to move said plunger means in said direction along said axis, and means for introducing fluid under pressure into said bore so as to move said piston means back and forth in said bore comprising pump means, conduit means connecting said pump means and said bore and a metering device interposed in said conduit means and operable to admit fluid to said bore only in predetermined volumetric increments for achieving movement of said piston means in predetermined increments of distance.
Claim 3
Dependent Claim
42 words
Resetting apparatus according to claim 1 further including multi-position valve means in said conduit means between said metering device and said bore, said valve means being movable to positions for admitting fluid to said bore for moving said piston in opposite directions.
Claim 4
Dependent Claim
23 words
Resetting apparatus according to claim 2 wherein said metering device and valve means are adapted to respond in operation to workpiece gauging 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) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |