US3977130A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal-compensating polishing apparatus
Assignee: Semimetals Inc
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Filing: 1975-05-12
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Granted: 1976-08-31
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Expires: 1995-05-12
Abstract
Abstract A polishing apparatus is provided having a flat, stiffly elastic mounting plate for the workpieces. The workpieces are placed in contact with a rotating polishing plate but are kept from rotating along with it by a holder secured to the mounting plate. The flat face of the holder is spaced from the mounting plate. An annular ring is fixed in position between, and in contact with, the face of the holder and the mounting plate. As the workpieces are pressed against the polishing plate by a force transmitted through the holder, the ring, and the mounting plate, the mounting plate assumes a given curvature depending in part on the radius of the ring.
Inventors
- 👤 Raymond L. Degner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:05
CPC Classifications
H; H10; H10P; H10P90/00; H10P90/12; H10P90/129; B; B24; B24B; B24B37/00; B24B37/27
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
79 words
An apparatus for polishing a workpiece surface comprising: a. a substantially flat polishing device; b. means to rotate said device about a first axis of rotation; c. a rotatable assembly having a second axis of rotation located out of alignment with said first axis comprising: 1. a stiffly elastic mounting plate having first and second oppositely facing surfaces; 2. means to attach at least one workpiece to said first surface of said plate, said first surface being substantially flat;
Claim 2
Independent Claim
79 words
An apparatus for polishing a workpiece surface comprising: a. a substantially flat polishing device; b. means to rotate said device about a first axis of rotation; c. a rotatable assembly having a second axis of rotation located out of alignment with said first axis comprising: 1. a stiffly elastic mounting plate having first and second oppositely facing surfaces; 2. means to attach at least one workpiece to said first surface of said plate, said first surface being substantially flat;
Claim 3
Dependent Claim
92 words
a holder removably secured to and having a surface facing and spaced from said second surface of said plate; 4. at least one protrusion fixedly positioned between, and having a portion in contact with, said second plate surface and said holder surface; and d. means to move said assembly so as to press said workpiece surface against said polishing device said at least one protrusion forming plate deforming means whereby said plate is deformed into a curved configuration when said workpiece surface is pressed against said polishing device by said moving means.
Claim 4
Dependent Claim
92 words
a holder removably secured to and having a surface facing and spaced from said second surface of said plate; 4. at least one protrusion fixedly positioned between, and having a portion in contact with, said second plate surface and said holder surface; and d. means to move said assembly so as to press said workpiece surface against said polishing device said at least one protrusion forming plate deforming means whereby said plate is deformed into a curved configuration when said workpiece surface is pressed against said polishing device by said moving means.
Claim 5
Dependent Claim
35 words
The apparatus of claim 1, wherein said at least one protrusion is configured and dimensioned to provide a given plate curvature as said plate is pressed against said polishing device by said assembly moving means.
Claim 6
Dependent Claim
24 words
The apparatus of claim 1, wherein a portion of said holder surrounds and slidably engages said plate to secure said holder to said plate.
Claim 7
Dependent Claim
16 words
The apparatus of claim 1, wherein said at least one protrusion is attached to said holder.
Claim 8
Dependent Claim
16 words
The apparatus of claim 1, wherein said at least one protrusion is integral with said holder.
Claim 9
Dependent Claim
25 words
The apparatus of claim 1, wherein said rotatable assembly is positioned between said first axis of rotation and the outer edge of said polishing device.
Claim 10
Dependent Claim
11 words
The apparatus of claim 1, wherein said holder is stiffly elastic.
Claim 11
Dependent Claim
25 words
The apparatus of claim 1, wherein said at least one protrusion substantially defines a substantially closed geometric figure located about said second axis of rotation.
Claim 12
Dependent Claim
15 words
The apparatus of claim 8, wherein said substantially closed geometric figure is an annular ring.
Claim 13
Dependent Claim
27 words
The apparatus of claim 9 wherein the width of said ring portion in contact with said second plate surface is small relative to said second plate surface.
Claim 14
Dependent Claim
27 words
The apparatus of claim 1, wherein the width of said protrusion portion in contact with said second plate surface is small relative to said second plate surface.
Claim 15
Dependent Claim
91 words
The apparatus of claim 1 wherein said rotatable assembly is positioned between said first axis of rotation and the outer edge of said polishing device; said holder is stiffly elastic; and said at least one protrusion is configured and dimensioned to provide a given plate curvature as said plate is pressing against said polishing device, said at least one protrusion defining a substantially closed geometric figure located about said second axis of rotation and having said portion in contact with said second plate surface small relative to said second plate surface.
Claim 16
Dependent Claim
14 words
The apparatus of claim 12 wherein said substantially closed geometric figure is an annulus.
Claim 17
Independent Claim
117 words
An apparatus for polishing a workpiece surface comprising: a. a substantially flat polishing device; b. means to rotate said device about a first axis of rotation; c. a rotatable assembly having a second axis of rotation located out of alignment with said first axis, comprising: 1. a stiffly elastic mounting plate having first and second oppositely facing surfaces; 2. means to attach at least one workpiece to said first surface of said plate, said first surface being substantially flat; 3. a holder removably secured to and having a surface facing and spaced from said second surface of said plate, a portion of said holder surrounding and slidably engaging said plate to secure said holder to said plate;
Claim 18
Independent Claim
117 words
An apparatus for polishing a workpiece surface comprising: a. a substantially flat polishing device; b. means to rotate said device about a first axis of rotation; c. a rotatable assembly having a second axis of rotation located out of alignment with said first axis, comprising: 1. a stiffly elastic mounting plate having first and second oppositely facing surfaces; 2. means to attach at least one workpiece to said first surface of said plate, said first surface being substantially flat; 3. a holder removably secured to and having a surface facing and spaced from said second surface of said plate, a portion of said holder surrounding and slidably engaging said plate to secure said holder to said plate;
Claim 19
Dependent Claim
40 words
at least one protrusion fixedly positioned between, and having a portion in contact with, said second plate surface and said holder surface; and d. means to move said assembly so as to press said workpiece surface against said polishing device.
Claim 20
Dependent Claim
40 words
at least one protrusion fixedly positioned between, and having a portion in contact with, said second plate surface and said holder surface; and d. means to move said assembly so as to press said workpiece surface against said polishing device.
Claim 21
Dependent Claim
35 words
The apparatus of claim 14, wherein said at least one protrusion is configured and dimensioned to provide a given plate curvature as said plate is pressed against said polishing device by said assembly moving 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) | 1979-08-31 | 1980-03-01 | 1980-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-31 | 1984-03-01 | 1984-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-31 | 1988-03-01 | 1988-08-31 | $7700.00 | Window Closed / Lapsed |