US3869263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasive member
Assignee: Abrasive Technology Lapidary Inc
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Filing: 1973-09-14
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Granted: 1975-03-04
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Expires: 1993-09-14
Abstract
Abstract A grinding and polishing device in which particles of abrasive material project outwardly from a working surface characterized by having a multiplicity of interspaced rounded protuberances and depressions which are joined together to form smoothly rounded peaks and valleys extending over substantially the entire working surface. The protuberances formed on the working surface are wearable under operating conditions so that during grinding or polishing operations, fresh abrasive particles disposed along the lower regions of the sloping surfaces of the protuberances will be continually exposed to the work.
Inventors
- 👤 Harold Jack Greenspan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:53
CPC Classifications
B; B24; B24D; B24D7/00; B24D7/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
120 words
An abrasive member comprising: a. a generally cylindrically shaped rigid disc having an axial bore for mounting it onto a rotatable spindle; b. a working surface provided with a multiplicity of interspaced convex protuberances and concave depressions blended together so as to form smoothly rounded peaks and valleys extending over substantially the entire working surface, said working surface comprising an embossed metal sheet material affixed to said rigid disc, said rigid disc providing a substantially continuous planar surface for supportable contact with said metal sheet; and c. a multiplicity of abrasive particles fixedly positioned relative to said working surface so that at least portions thereof extend outwardly from the surfaces of the protuberances and depressions formed on said working surface.
Claim 2
Dependent Claim
120 words
An abrasive member comprising: a. a generally cylindrically shaped rigid disc having an axial bore for mounting it onto a rotatable spindle; b. a working surface provided with a multiplicity of interspaced convex protuberances and concave depressions blended together so as to form smoothly rounded peaks and valleys extending over substantially the entire working surface, said working surface comprising an embossed metal sheet material affixed to said rigid disc, said rigid disc providing a substantially continuous planar surface for supportable contact with said metal sheet; and c. a multiplicity of abrasive particles fixedly positioned relative to said working surface so that at least portions thereof extend outwardly from the surfaces of the protuberances and depressions formed on said working surface.
Claim 3
Dependent Claim
110 words
An abrasive member comprising: a. a rigid support member; b. a working surface on said support member provided with a multiplicity of interspaced convex protuberances and concave depressions blended together so as to form smoothly rounded peaks and valleys extending over substantially the entire working surface, said working surface comprising a metal sheet material affixed to said support member, said support member providing a substantially continuous planar surface for supportable contact with said metal sheet; and c. a multiplicity of abrasive particles fixedly positioned relative to said working surface so that at least portions thereof extend outwardly from the surfaces of the protuberances and depressions formed on said working surface.
Claim 4
Dependent Claim
110 words
An abrasive member comprising: a. a rigid support member; b. a working surface on said support member provided with a multiplicity of interspaced convex protuberances and concave depressions blended together so as to form smoothly rounded peaks and valleys extending over substantially the entire working surface, said working surface comprising a metal sheet material affixed to said support member, said support member providing a substantially continuous planar surface for supportable contact with said metal sheet; and c. a multiplicity of abrasive particles fixedly positioned relative to said working surface so that at least portions thereof extend outwardly from the surfaces of the protuberances and depressions formed on said working surface.
Claim 5
Dependent Claim
44 words
The abrasive member as defined in claim 2 in which said working surface is uniformly covered with a particle bonding material and said abrasive particles are embedded in said bonding material uniformly along the surfaces of the peaks and valleys of said working surface.
Claim 6
Dependent Claim
39 words
The abrasive member as defined in claim 3 in which said metal sheet material is a soft, comparatively ductile metal which is wearable under operating conditions and said bonding material comprises a nickel coating uniformly covering said sheet material.
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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) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |