Title: Abrasive pad for grinding lenses

Abstract: A pad for grinding lens blanks comprising a pliable sheet of a water-proof material (e.g., paper or fabric) with an adhesive coating on one side thereof for adhering onto a working surface. An abrasive substance (e.g., silicon carbide) is applied to the pad and a plurality of radially extending channels are cut through its area to provide a smooth fit over a working surface.

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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: