US3601929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinding machine
Assignee: Heald Machine Co
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Filing: 1969-11-24
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Granted: 1971-08-31
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Expires: 1989-11-24
Abstract
Abstract This invention relates to a grinding machine and, more particularly, to apparatus for finishing a surface of revolution by the abrasive process, including means for maintaining the quality of the finished surface despite changes in abrasive wheel diameter.
Inventors
- 👤 Herbert R Uhtenwoldt
- 👤 Frederick A Hohler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:35
CPC Classifications
B; B24; B24B; B24B49/00; B24B49/16
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
90 words
A grinding machine, comprising a. a base, b. a workhead mounted on the base adapted to support and rotate a workpiece, c. a wheelhead mounted on the base and having a rotatable abrasive wheel, d. an actuator for bringing about relative movement between the workhead and the wheelhead to bring about grinding engagement between the wheel and the workpiece, the force available from the actuator being at a predetermined value when the abrasive wheel is new, and e. means to reduce the said force as the wheel diameter is reduced.
Claim 2
Dependent Claim
90 words
A grinding machine, comprising a. a base, b. a workhead mounted on the base adapted to support and rotate a workpiece, c. a wheelhead mounted on the base and having a rotatable abrasive wheel, d. an actuator for bringing about relative movement between the workhead and the wheelhead to bring about grinding engagement between the wheel and the workpiece, the force available from the actuator being at a predetermined value when the abrasive wheel is new, and e. means to reduce the said force as the wheel diameter is reduced.
Claim 3
Dependent Claim
37 words
A grinding machine as recited in claim 1, wherein the force is reduced in a predetermined manner as the distance between the wheelhead and the workhead is successively reduced during the grinding of a succession of workpieces.
Claim 4
Dependent Claim
62 words
A grinding machine as recited in claim 1, wherein the actuator is a hydraulic linear actuator wherein the said means consists of a throttle connected hydraulically across the actuator and mechanically on the base, and wherein a cam is operated by the relative movement of the wheelhead and workhead to set the throttle at successive amounts of restriction to hydraulic flow therethrough.
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) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |