Title: Abrasive pad for grinding lenses

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Claims: What is claimed is:

1. A pad for grinding lens blanks comprising a relatively porous and substantially water-resistant pliable sheet adapted to conform to the curved surface of a working tool, an adhesive coating on the underside of said pad for adhesively securing said pad to the surface of said tool and an abrasive surface on the other side thereof, a plurality of radially extending channels cut through the area of said pad, said radially extending channels being defined by parallel radial sides extending from the periphery of said pad toward the center thereof and an arched segment joining the inner ends of said radial sides.

2. A pad as in claim 1 wherein said arched segment is of generally circular configuration having a diameter larger than the width of said radially extending channel.

Other info:

Inventors: Stoppacher, Waldemar (Valhalla, NY, US)

Application Number: 559444
Filing Date: 1975-03-18
Publication_date: 1976-06-01
Assignee: Interoptic Laboratories, Inc. (Elmsford, NY)
Primary Class(es): 451/527 451/538, 451/539, 451/921
Other Classes:
US Patent Ref:

2286208	Jun, 1942	Kirchner	51/406.
2309836	Feb, 1943	Fenton	51/DIG.
2607174	Aug, 1952	Lanius	51/284.
2701191	Feb, 1955	Laliberte	51/DIG.
3144737	Aug, 1964	Faas	51/DIG.
3267623	Aug, 1966	Block	51/406.
3324608	Jun, 1967	Hoenig	51/395.
3583111	Jun, 1971	Volk	51/DIG.
3699721	Oct, 1972	Beasley	51/DIG.

Other Refs:
Primary Examiner: Smith, Al Lawrence
Assistant Examiner: Godici, Nicholas P.
Attorney: