Retaining device for a block or suction element

Details Retaining device for a block or suction element Retaining device for a block or suction element

2005-02-15

2005-02-15

Rose, Robert A. (Department: 3723)

Abrading

Work holder

Lens or prism

C451S384000, C451S388000, C451S460000

Reexamination Certificate

active

06855042

ABSTRACT:
Retaining device (1) for a block or suction element (10) in a centering device for spectacle lenses, having a support, which has a longitudinal axis (2), having a spherically dome-shaped bearing surface (3) on the support, having a spherical dome (5), which is mounted cardanically on the support and is complementary to the bearing surface, having a holding element (6) in the spherical dome for the block or suction element with a contact surface (11) for the spectacle lens, and having a radius (R) of the bearing surface and of the spherical dome, the mid-point (M) of which is located on the longitudinal axis of the support (1) on the contact surface for the spectacle lens.

REFERENCES:
patent: 2383131 (1945-08-01), Kirsch
patent: 3134208 (1964-05-01), Richmond
patent: 3804153 (1974-04-01), Tagnon
patent: 4118898 (1978-10-01), Godot
patent: 2245841 (1973-04-01), None
patent: 2245841 (1974-08-01), None
patent: 2621891 (1977-12-01), None
patent: 4230610 (1993-04-01), None
patent: 2226824 (1974-11-01), None

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