Patent US4607496A successfully refreshed from Google Patents.
US4607496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of holding and polishing a workpiece
Assignee: Individual
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Filing: 1984-07-23
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Granted: 1986-08-26
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Expires: 2004-07-23
Abstract
Abstract A method of holding an polishing a workpiece whereby a liquid such as water is applied between the workpiece and a support member and the liquid is frozen to secure the workpiece to the support member. A polishing member is positioned in contact with the workpiece in a grinding liquid and the polishing member and the workpiece are moved relative to each other to polish the workpiece. Grooves or through holes may be provided in a surface of the support member to hold the water or other suitable liquid. The liquid to be frozen further may be impregnated into a liquid absorbing material.
Inventors
- 👤 Yoshiaki Nagaura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:27
CPC Classifications
B; B23; B23Q; B23Q3/00; B23Q3/02; B23Q3/06; B23Q3/08; B23Q3/086
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
42 words
A method of holding and working a workpiece comprising the steps of: providing a freezable liquid impregnated material between a workholder and the workpiece; freezing the liquid impregnated in the material to secure the workpiece to the workholder; and working the workpiece.
Claim 2
Independent Claim
42 words
A method of holding and working a workpiece comprising the steps of: providing a freezable liquid impregnated material between a workholder and the workpiece; freezing the liquid impregnated in the material to secure the workpiece to the workholder; and working the workpiece.
Claim 3
Independent Claim
51 words
A method of holding and working a workpiece comprising the steps of placing the workpiece on a workholder having a plurality of holes extending all the way through the workholder; injecting a freezable liquid into the holes; freezing the liquid to secure the workpiece to the workholder; and working the workpiece.
Claim 4
Independent Claim
51 words
A method of holding and working a workpiece comprising the steps of placing the workpiece on a workholder having a plurality of holes extending all the way through the workholder; injecting a freezable liquid into the holes; freezing the liquid to secure the workpiece to the workholder; and working the workpiece.
Claim 5
Independent Claim
73 words
A method of holding and working a workpiece, comprising the steps of: providing a layer of a freezable liquid on a workholder; immersing the workpiece into the layer of freezable liquid whereby the workpiece is covered with the liquid; freezing the layer of liquid to secure the workpiece to the workholder; working through the frozen layer of liquid overlying the workpiece until a surface of the workpiece is exposed; and working the workpiece.
Claim 6
Independent Claim
73 words
A method of holding and working a workpiece, comprising the steps of: providing a layer of a freezable liquid on a workholder; immersing the workpiece into the layer of freezable liquid whereby the workpiece is covered with the liquid; freezing the layer of liquid to secure the workpiece to the workholder; working through the frozen layer of liquid overlying the workpiece until a surface of the workpiece is exposed; and working the workpiece.
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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) | 1989-08-25 | 1990-02-24 | 1990-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-25 | 1994-02-24 | 1994-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-25 | 1998-02-24 | 1998-08-26 | $7700.00 | Window Closed / Lapsed |