Title: Whole spherical surface polishing device

Abstract: This invention relates to a polishing device which may polish the surface of a hard body such as metal, rock, glass or hard plastics into a perfect spherical shape. Each polishing device may also be applied for the mass-production of lenses, concave and convex. The polishing device comprises three identical polishing dishes mounted on the front ends of three rotating shafts which are positioned on three lines radiating from one point on a plane with an angular interval of 120.degree., respectively. Said polishing dish has a concave polishing surface and the three polishing dishes are adapted to support a body to be polished at the center of the device and to rotate in contact with the body. Therefore, it may be polished into a perfectly spherical shape.

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Inventors: Akahane, Shoichi

Application Number: 505381
Filing Date: 1974-09-12
Publication_date: 1976-06-08
Assignee:
Primary Class(es): 451/268
Other Classes:
US Patent Ref:

1806918	May, 1931	Riggs	51/289.
2352178	Jun, 1944	Bolsey	51/284.
2600815	Jun, 1952	Turner	51/284.
3024578	Mar, 1962	Mushkin	51/289.
3111789	Nov, 1963	Harmon	51/289.
3133383	May, 1964	Chapman	51/289.
3577690	May, 1971	Catron	51/284.

Other Refs:
Primary Examiner: Kelly, Donald G.
Assistant Examiner:
Attorney: Striker; Michael J.