The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 06, 1995
Filed:
Apr. 28, 1993
Franz Bobst, Oensingen, CH;
Loh Engineering AG, Oensingen, CH;
Abstract
A device is provided for guiding a workpiece or tool during the machining of toric or spherical surfaces. The device includes an axially movable spindle sleeve disposed on the grinding or polishing machine and having first and second ends. A seating chuck has support for supporting one of a lens and a tool. A connecting means is provided for fitting the chuck concentrically to the first end of the spindle support. The connecting means includes a bell-shaped flange. A ball joint connects the support means to connecting means. A roller bellows is non-resilient in the circumferential direction and connects the support means to the bell-shaped flange. The roller bellows is arranged to form a joint chamber for sealing the space in which the ball joint is situated. A pressure fluid line is connected to the joint chamber. A pressure fluid cylinder-piston assembly is disposed coaxially with the spindle sleeve and the spindle sleeve being movable with the piston. The pressure fluid spaces of the joint chamber and of the pressure fluid cylinder-piston assembly are fluidly connected so as to be charged simultaneously with pressure fluid supplied to the fluid line.