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. 21, 1988
Filed:
May. 22, 1986
National Research Development Corporation, London, GB;
Abstract
A slippage sensor comprises a light-transmissive elastic component (14) defining an object-contactor face (15), input and output light guide (16a, 16b) defining a light transmission path through the component, and an indicator (19) connected with the output guide to detect transmission variations caused by elastic deformation of the component due, in turn, to relative slipping movement of an object (10) contacted thereby. In one form of sensor the input/output guides define a light path discontinous at the contactor face and to be completed by a surface (13) of the object as a reflector. In another form the component carries a reflector deformable therewith. In a further form the component is photoelastic and the input/output guides include polarisers. The sensor is useful to indicate when a minimum object gripping force is attained or it can indicate object characterisation.