Patent US3845587A successfully refreshed from Google Patents.
US3845587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radial surface finishing apparatus
Assignee: Individual
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Filing: 1972-12-01
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Granted: 1974-11-05
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Expires: 1992-12-01
Abstract
Abstract Apparatus is disclosed for grinding parallel surfaces upon a plurality of rotatable workpieces. A primary grinding wheel, of massive and rigid configuration, is rotated about an axis substantially parallel to the axis of rotation of the workpieces. An axially movable secondary grinding wheel, of massive size with respect to the grinding surface but somewhat resilient with respect to the axis of rotation, is rotated about an axis essentially in alignment with the axis of the primary grinding wheel. Each workpiece is mounted upon an axially shiftable rotatable shaft, which mounting permits each workpiece to rotate and move axially. Each workpiece is compressively positioned intermediate the primary and secondary grinding wheels, and the grinding wheels are rotated in the same direction. The workpieces are mounted approximately equiangularly about the grinding wheels. In operation, the workpieces tend to align themselves in a plane parallel to the plane defined by the grinding surface of the primary grinding wheel. The grinding surface of the secondary grinding wheel, on contacting the workpieces, will also tend to align itself in a plane parallel to the plane of the primary grinding surface. As the grinding wheels rotate in a first direction, the friction between the grinding wheels and the workpieces tends to cause the workpieces to rotate in the opposite direction. The resulting counter-rotation causes the workpieces to be ground radially. The axially shiftable workpieces accommodate the wear on the grinding wheels and the reduced thickness of the workpieces without affecting the alignment or grinding pressure applied to either side of the workpiece. Controls are provided to vary the pressure, rate of rotation and direction of rotation. Means are also disclosed for truing the grinding wheels.
Inventors
- 👤 H Klievoneit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:50
CPC Classifications
B; B24; B24B; B24B7/00; B24B7/10; B24B7/16; B24B7/17
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
231 words
Apparatus mounted upon a frame for grinding parallel surfaces on a workpiece, said apparatus comprising: A. a first grinding wheel, said first grinding wheel being axially non-displaceable and configured to present a first nondeformable rigid planar surface perpendicular to its axis of rotation; B. a second grinding wheel, said second grinding wheel being essentially parallel to and axially aligned with said first grinding wheel and configured to present a second nondeformable rigid planar surface substantially perpendicular to its axis of rotation; C. positioning means for axially displacing said second grinding wheel with respect to said first grinding wheel; D. mounting means for rotatably supporting a workpiece intermediate said first and second grinding wheels, said mounting means comprising: 1. a shaft, said shaft being essentially adjacent the periphery of said first grinding wheel; 2. arm means for supporting said shafts in general alignment with the axis of rotation of said first and second grinding wheels, said shafts being radially removed from the periphery of said first and second grinding wheels; and E. motive means for individually rotating each of said first and second grinding wheels; whereby, said first and second grinding wheels, rotating in a first direction, contact the respective sides of said workpiece and the friction between said first and second grinding wheels causes said workpiece to rotate in a second direction to produce a curved radial grind on said workpiece.
Claim 2
Dependent Claim
231 words
Apparatus mounted upon a frame for grinding parallel surfaces on a workpiece, said apparatus comprising: A. a first grinding wheel, said first grinding wheel being axially non-displaceable and configured to present a first nondeformable rigid planar surface perpendicular to its axis of rotation; B. a second grinding wheel, said second grinding wheel being essentially parallel to and axially aligned with said first grinding wheel and configured to present a second nondeformable rigid planar surface substantially perpendicular to its axis of rotation; C. positioning means for axially displacing said second grinding wheel with respect to said first grinding wheel; D. mounting means for rotatably supporting a workpiece intermediate said first and second grinding wheels, said mounting means comprising: 1. a shaft, said shaft being essentially adjacent the periphery of said first grinding wheel; 2. arm means for supporting said shafts in general alignment with the axis of rotation of said first and second grinding wheels, said shafts being radially removed from the periphery of said first and second grinding wheels; and E. motive means for individually rotating each of said first and second grinding wheels; whereby, said first and second grinding wheels, rotating in a first direction, contact the respective sides of said workpiece and the friction between said first and second grinding wheels causes said workpiece to rotate in a second direction to produce a curved radial grind on said workpiece.
Claim 3
Dependent Claim
98 words
arm means for supporting said shafts in general alignment with the axis of rotation of said first and second grinding wheels, said shafts being radially removed from the periphery of said first and second grinding wheels; and E. motive means for individually rotating each of said first and second grinding wheels; whereby, said first and second grinding wheels, rotating in a first direction, contact the respective sides of said workpiece and the friction between said first and second grinding wheels causes said workpiece to rotate in a second direction to produce a curved radial grind on said workpiece.
Claim 4
Dependent Claim
98 words
arm means for supporting said shafts in general alignment with the axis of rotation of said first and second grinding wheels, said shafts being radially removed from the periphery of said first and second grinding wheels; and E. motive means for individually rotating each of said first and second grinding wheels; whereby, said first and second grinding wheels, rotating in a first direction, contact the respective sides of said workpiece and the friction between said first and second grinding wheels causes said workpiece to rotate in a second direction to produce a curved radial grind on said workpiece.
Claim 5
Dependent Claim
26 words
The apparatus as set forth in claim 1 wherein each one of said plurality of workpieces are mounted equiangularly about said first and second grinding wheels.
Claim 6
Dependent Claim
21 words
bearing means disposed at opposite sides of said platform and intermediate said platform and the frame for supporting said platform; and
Claim 7
Dependent Claim
21 words
bearing means disposed at opposite sides of said platform and intermediate said platform and the frame for supporting said platform; and
Claim 8
Dependent Claim
127 words
means disposed at one of said opposite sides for pivoting said platform about the other of said opposiTe sides; whereby the axis of rotation of said second grinding wheel is displaced from the axis of rotation of said first grinding wheel while maintaining parallelism between said respective axis of rotation; D. mounting means for rotatably supporting a workpiece intermediate said first and second grinding wheels; and E. motive means for individually rotating each of said first and second grinding wheels; whereby, said first and second grinding wheels, rotating in a first direction, contact the respective sides of said workpiece and the friction between said first and second grinding wheels causes said workpiece to rotate in a second direction to produce a curved radial grind on said workpiece.
Claim 9
Dependent Claim
127 words
means disposed at one of said opposite sides for pivoting said platform about the other of said opposiTe sides; whereby the axis of rotation of said second grinding wheel is displaced from the axis of rotation of said first grinding wheel while maintaining parallelism between said respective axis of rotation; D. mounting means for rotatably supporting a workpiece intermediate said first and second grinding wheels; and E. motive means for individually rotating each of said first and second grinding wheels; whereby, said first and second grinding wheels, rotating in a first direction, contact the respective sides of said workpiece and the friction between said first and second grinding wheels causes said workpiece to rotate in a second direction to produce a curved radial grind on said workpiece.
Claim 10
Dependent Claim
28 words
The apparatus as set forth in claim 1 wherein each said shaft includes means for accommodating limited axial displacement of said associated workpiece with respect to said shaft.
Claim 11
Dependent Claim
34 words
The apparatus as set forth in claim 3 including a fixture disposed intermediate each of said shafts and the respective ones of said workpieces for supporting said workpieces upon respective ones of said shafts.
Claim 12
Dependent Claim
29 words
The apparatus as set forth in claim 4 wherein each said fixture includes means for restraining independent rotation between each said fixture and the respective ones of said workpieces.
Claim 13
Dependent Claim
89 words
Apparatus mounted upon a frame for grinding parallel surfaces on a workpiece, said apparatus comprising: A. a first grinding wheel, said first grinding wheel being axially non-displaceable; B. a second grinding wheel, said second grinding wheel being essentially parallel to and axially aligned with said first grinding wheel; C. positioning means for axially displacing said second grinding wheel with respect to said first grinding wheel, including means for maintaining the parallel relationships existing between the axis of rotation of said first and second grinding wheels, said maintaining means comprising:
Claim 14
Dependent Claim
89 words
Apparatus mounted upon a frame for grinding parallel surfaces on a workpiece, said apparatus comprising: A. a first grinding wheel, said first grinding wheel being axially non-displaceable; B. a second grinding wheel, said second grinding wheel being essentially parallel to and axially aligned with said first grinding wheel; C. positioning means for axially displacing said second grinding wheel with respect to said first grinding wheel, including means for maintaining the parallel relationships existing between the axis of rotation of said first and second grinding wheels, said maintaining means comprising:
Claim 15
Dependent Claim
248 words
Apparatus for grinding parallel surfaces on a workpiece, said apparatus comprising: A. a first rotatably mounted grinding wheel, said grinding wheel having an abrasive surface perpendicular to the axis of rotation; B. a movable platform, said platform being movable with respect to said first grinding wheel in a direction parallel to the axis of rotation of said first grinding wheel; C. a second rotatably mounted grinding wheel disposed on said platform, said second grinding wheel having an abrasive surface perpendicular to the axis of rotation, and including resilient means associated with said second grinding wheel to accommodate any misalignment existing between the axis of rotation of said second grinding wheel with respect to said first grinding wheel; D. displacement means connected to said second grinding wheel for positioning said second grinding wheel with respect to said first grinding wheel; E. individual motive means associated with each of said first and second grinding wheels for effecting selective rotation thereof; F. rotatable support means adjacent the periphery of said first grinding wheel for positioning a plurality of workpieces intermediate said first and second grinding wheels; and G. adjustable means for varying the distance between said support means and the periphery of said first grinding wheel to accommodate a plurality of workpieces of various sizes; whereby, said first and second grinding wheels rotating in a first direction on contacting opposite sides of said workpieces, cause said workpieces to rotate in a second direction to grind said workpieces along curved radial lines.
Claim 16
Dependent Claim
248 words
Apparatus for grinding parallel surfaces on a workpiece, said apparatus comprising: A. a first rotatably mounted grinding wheel, said grinding wheel having an abrasive surface perpendicular to the axis of rotation; B. a movable platform, said platform being movable with respect to said first grinding wheel in a direction parallel to the axis of rotation of said first grinding wheel; C. a second rotatably mounted grinding wheel disposed on said platform, said second grinding wheel having an abrasive surface perpendicular to the axis of rotation, and including resilient means associated with said second grinding wheel to accommodate any misalignment existing between the axis of rotation of said second grinding wheel with respect to said first grinding wheel; D. displacement means connected to said second grinding wheel for positioning said second grinding wheel with respect to said first grinding wheel; E. individual motive means associated with each of said first and second grinding wheels for effecting selective rotation thereof; F. rotatable support means adjacent the periphery of said first grinding wheel for positioning a plurality of workpieces intermediate said first and second grinding wheels; and G. adjustable means for varying the distance between said support means and the periphery of said first grinding wheel to accommodate a plurality of workpieces of various sizes; whereby, said first and second grinding wheels rotating in a first direction on contacting opposite sides of said workpieces, cause said workpieces to rotate in a second direction to grind said workpieces along curved radial lines.
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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) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |