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:
Aug. 18, 1992
Filed:
Nov. 06, 1990
Takeshi Yakou, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A work clamping apparatus for clamping various types of works comprises a pair of finger members adapted to be moved toward and away from each other, a first command position setting device for setting a first command position according to the outer configuration of a work to be clamped, a second command position setting device for setting a second command position closer to the position of the work than the first command position, and a driving device for moving the finger members to the second command position past the first command position. A first clamping force setting device sets the work clamping force to be exerted by the finger members to a first clamping force level when the finger members during movement of the fingers from the first command position to the second command position, and a second clamping force setting device sets the work clamping force to a second clamping force level which is different from the first clamping force level during the movement of the finger members towards the first command position.