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. 25, 1981
Filed:
Feb. 01, 1980
Kenneth Chandler, Bristol, GB;
Masson Scott Thrissel Engineering Limited, Bristol, GB;
Abstract
This application covers a device included in the microprocessor control for winders or sheeters; the device is arranged to stop the machine when a desired length of web has been fed by accurately-timed start of deceleration from full speed. This avoids the need to run at a lower speed for a period as the desired length is approached. In the device, the web speed is sensed by a transducer which delivers a speed signal, and from this is calculated the length of web which will be fed during standard deceleration. The result of this calculation can then be compared with the difference between desired length and length already fed (or the result plus length already fed can be compared with desired length) and when the result of this comparison indicates deceleration should start a signal is sent to the braking system. As an alternative to calculation of length of web fed during deceleration from the sensed speed, the result may be obtained by a 'table look-up' operation.