Patent US4361987A successfully refreshed from Google Patents.
US4361987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for high tolerance polishing of a work-piece surface
Assignee: GBI INTERNATIONAL INDUSTRIES Inc
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Filing: 1980-01-22
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Granted: 1982-12-07
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Expires: 2000-01-22
Abstract
Abstract A method for polishing a workpiece comprising the steps of providing a polishing element formed of a volume of abrasive containing resilient material and causing the polishing element to move rapidly against a workpiece surface under pressure. Apparatus for carrying out the method is also disclosed.
Inventors
- 👤 Itzchak Lapsker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:36
CPC Classifications
B; B24; B24B; B24B1/00; B24B41/00; B24B41/04; B24B41/047
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
131 words
Apparatus for effecting high tolerance finishing of a workpiece surface comprising: a mounting member including attachment means suitable for attachment to rotary drive apparatus for rotation of the mounting member about a first axis; at least one resilient abrasive finishing element rotataby mounted on said mounting member for motion relative to said workpiece surface in a plane perpendicular to said first axis; bearing means supporting said at least one finishing element on said mounting member for free rotation of said at least one finishing element relative to said mounting member; and means for collecting particulate matter generated during a finishing operation from wear of said finishing element mounted on said mounting member; said at least one resilient abrasive finishing element comprising an annular body of uniformly intermixed resilient and abrasive substances.
Claim 2
Dependent Claim
131 words
Apparatus for effecting high tolerance finishing of a workpiece surface comprising: a mounting member including attachment means suitable for attachment to rotary drive apparatus for rotation of the mounting member about a first axis; at least one resilient abrasive finishing element rotataby mounted on said mounting member for motion relative to said workpiece surface in a plane perpendicular to said first axis; bearing means supporting said at least one finishing element on said mounting member for free rotation of said at least one finishing element relative to said mounting member; and means for collecting particulate matter generated during a finishing operation from wear of said finishing element mounted on said mounting member; said at least one resilient abrasive finishing element comprising an annular body of uniformly intermixed resilient and abrasive substances.
Claim 3
Dependent Claim
21 words
Apparatus according to claim 1 and wherein said mounting member defines at least one axis of rotation for said polishing element.
Claim 4
Dependent Claim
45 words
Apparatus according to claim 2 and wherein said at least one axis comprises first and second axes, said mounting member being arranged for rotation about said first axis and said polishing element bein arranged for rotation relative to said mounting member about said second axis.
Claim 5
Dependent Claim
14 words
Apparatus according to claim 3 and wherein said first and second axes are intersecting.
Claim 6
Dependent Claim
14 words
Apparatus according to claim 3 and wherein said first and second axes are non-intersecting.
Claim 7
Dependent Claim
13 words
Apparatus according to claim 1 and wherein said mounting member defines a housing.
Claim 8
Dependent Claim
24 words
Apparatus according to claim 1 and also comprising means for providing pressure engagement between said at least one polishing element and said workpiece surface.
Claim 9
Dependent Claim
22 words
Apparatus according to claim 7 and wherein said providing means comprises means for providing rotation of said mounting member in opposite directions.
Claim 10
Dependent Claim
74 words
Apparatus according to claim 1 and wherein said collecting means comprises a housing mounted onto said mounting member and defining at least one rectangular opening at the bottom portion thereof, said at least one finishing element being disposed mainly within said housing and extending partially through said at least one rectangular opening, said at least one rectangular opening having a length which is less than the diameter of said at least one finishing element.
Claim 11
Dependent Claim
22 words
Apparatus according to claim 1 and wherein the radial depth of said annular body is at least as great as its width.
Claim 12
Dependent Claim
24 words
Apparatus according to claim 1 wherein the resilient and abrasive substances are selected in order to provide a surface finish of 2-4 microinch rms.
Claim 13
Dependent Claim
38 words
Apparatus according to claim 7 and wherein said means for providing pressure engagement is operative to produce a compression of 200-300 microns in the overall diameter of said at least one finishing element during operation against a workpiece.
Claim 14
Dependent Claim
27 words
Apparatus according to claim 7 and wherein said means for providing pressure engagement is operative to provide area contact between said finishing element and a workpiece surface.
Claim 15
Dependent Claim
20 words
Apparatus according to claim 9 and wherein said bottom is selectably positionable with respect to the remainder of said housing.
Claim 16
Dependent Claim
26 words
Apparatus according to claim 9 and wherein the interior of said housing is configured to define a recess for collection of particulate matter produced during operation.
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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) | 1985-12-06 | 1986-06-07 | 1986-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-06 | 1990-06-07 | 1990-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-06 | 1994-06-07 | 1994-12-07 | $7700.00 | Window Closed / Lapsed |