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. 16, 1977
Filed:
Jun. 04, 1976
Applicant:
Inventors:
Kenneth D Schreyer, Clarence, NY (US);
Earl T Leverentz, North Tonawanda, NY (US);
Thomas R Nusz, Amherst, NY (US);
Assignee:
Columbus McKinnon Corporation, Tonawanda, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B66D / ;
U.S. Cl.
CPC ...
254168 ; 254174 ; 2541 / ; 212 / ; 318475 ;
Abstract
In a multiple-reeved electric hoist of the type employing either a load cable winding drum or a load chain lift wheel, and wherein the dead end of the cable (or chain) carries a part of the load and is attached to the hoist frame; an improved overload sensing and responsive power shut-off and overload impact distributing device associated with the dead-end of the load lift cable (or chain) for deenergizing the hoist motor and protecting the hoist parts and its supporting structure against damage whenever an overload is applied to the hoist lift cable (or chain).