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Patent Searching and Data


Title:
DEVICE FOR GRINDING OPHTHALMIC LENSES COMPRISING IMPROVED MEANS OF CLAMPING THE GLASS BLANK FOR GRINDING
Document Type and Number:
WIPO Patent Application WO2004078414
Kind Code:
A8
Abstract:
The device comprises a carriage (10), a two-piece shaft (12A, 12B), one piece (12B) of which can be displaced axially for clamping a glass blank (14), and clamping means with a drive (66) and control means for said drive for varying the drive effort thereof and thus the clamping effort as a function of a control variable (F), at least two complementary transmission bodies (28, 74) which can respectively exert an axial force on the mobile piece of the shaft and a reactionary axial force on a support surface fixed to the carriage. The support surface is a stop fixed with relation to the carriage and the control variable (F) is derived from the axial pressure measured by a pressure gauge placed on the fixed stop.

Inventors:
MEUNIER JEAN-MARC (FR)
BIZET BRUNO (FR)
Application Number:
PCT/FR2004/000181
Publication Date:
September 29, 2005
Filing Date:
January 27, 2004
Export Citation:
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Assignee:
BRIOT INT (FR)
MEUNIER JEAN-MARC (FR)
BIZET BRUNO (FR)
International Classes:
B23B25/06; B23Q17/00; B24B5/02; B24B9/14; B24B13/005; B24B41/06; (IPC1-7): B24B9/14; B23B25/06; B23Q17/00; B24B5/02; B24B13/005; B24B41/06
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