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:
Dec. 02, 1980
Filed:
Jul. 10, 1978
Applicant:
Inventors:
Philip Beckley, Newport, GB;
John Mildoon, Dudley, GB;
Assignee:
British Steel Corporation, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08B / ; B66C / ;
U.S. Cl.
CPC ...
340685 ; 294 655 ; 340540 ; 340666 ; 340668 ;
Abstract
A safety device for lifting magnet has sensor means responsive to flux produced by the device in the magnetic circuit including the body to be lifted, a transducer responsive to the lifting tension produced by the device together with a signal translation circuit effective to compare signals from the sensor and from the transducer and to provide an output indicative of a safety margin between lifting tension and the field available for lifting.