US4288233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasive pads for lens lapping tools
Assignee: Individual
•
Filing: 1979-08-02
•
Granted: 1981-09-08
•
Expires: 1999-08-02
Abstract
Abstract A method for making replaceable abrasive pads for ophthalmic lens lapping tools wherein a substrate sheet is metal plated with abrasive particles and then shapes suitable for lens lapping tools are cut therefrom. The abrasive pads are suitable for abrading glass or plastic lenses.
Inventors
- 👤 Ronald C. Wiand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:57
CPC Classifications
B; B24; B24B; B24B13/00; B24B13/01; B24D; B24D11/00; Y; Y10; Y10S; Y10S451/00; Y10S451/921
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
42 words
A method of making an abrasive pad for an ophthalmic lens lapping tool comprising first metal plating diamond particles to a substrate sheet and then cutting shapes from said sheet, said shapes being conformable to the surface of said lens lapping tool.
Claim 2
Independent Claim
42 words
A method of making an abrasive pad for an ophthalmic lens lapping tool comprising first metal plating diamond particles to a substrate sheet and then cutting shapes from said sheet, said shapes being conformable to the surface of said lens lapping tool.
Claim 3
Dependent Claim
15 words
The method of claim 1 wherein said shapes have a plurality of radially extending channels.
Claim 4
Dependent Claim
27 words
The method of claim 1 wherein said substrate sheet is made of a conductive material selected from the group consisting of copper, aluminum steel, and alloys thereof.
Claim 5
Dependent Claim
17 words
The method of claim 1 wherein said metal plating is carried out by means of electroplating nickel.
Claim 6
Dependent Claim
20 words
The method of claim 1 wherein said diamond particles have a size of from about 10 to about 100 microns.
Claim 7
Dependent Claim
20 words
The method of claim 5 wherein said diamond particles have a size of from about 20 to about 30 microns.
Claim 8
Dependent Claim
20 words
The method of claim 1 wherein said diamond particles have a burial depth of from about 20% to about 90%.
Claim 9
Dependent Claim
9 words
The product made by the method of claim 1.
Claim 10
Independent Claim
70 words
A method of making an abrasive pad for an ophthalmic lens lapping tool comprising the steps of first forming an abrasive sheet by bonding an abrasive amount of diamond particles onto a conductive substrate by metal plating, said particles having a burial depth of from about 20% to about 90% and then cutting shapes from said sheet, said shapes adapted to conform to a surface of a lens lapping tool.
Claim 11
Independent Claim
70 words
A method of making an abrasive pad for an ophthalmic lens lapping tool comprising the steps of first forming an abrasive sheet by bonding an abrasive amount of diamond particles onto a conductive substrate by metal plating, said particles having a burial depth of from about 20% to about 90% and then cutting shapes from said sheet, said shapes adapted to conform to a surface of a lens lapping tool.
Claim 12
Dependent Claim
9 words
The product made by the method of claim 9.
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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) | 1984-09-07 | 1985-03-09 | 1985-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-07 | 1989-03-09 | 1989-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-07 | 1993-03-09 | 1993-09-08 | $7700.00 | Window Closed / Lapsed |