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:
Jan. 01, 2008
Filed:
Dec. 18, 2003
Sharon Ann Ashton, Bristol, GB;
Victor Gordon Stimpson, Avening, GB;
Jonathan Paul Fuge, Bristol, GB;
David Roberts Mcmurtry, Dursley, GB;
Sharon Ann Ashton, Bristol, GB;
Victor Gordon Stimpson, Avening, GB;
Jonathan Paul Fuge, Bristol, GB;
David Roberts McMurtry, Dursley, GB;
Renishaw PLC, Gloucestershire, GB;
Abstract
The invention relates to a device and method for analysis of a tool () e.g. used on a machine tool. A tool detector () includes a light emitter () and a light receiver (). Tool () when progressed into a beam () of light emitted from the emitter () will cause a signal from the receiver to change. Circuitry () includes a digital signal processor which processes the signal from the receiver and produces an output only if the signal conforms to a predetermined condition. Preferably this predetermined condition could be e.g. a characteristic shape of the signal from the receiver, a change in a value derived from a succession of such signals or a change in the minimum or maximum values of a succession of signals from the receiver.