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. 20, 1977
Filed:
Jun. 30, 1976
Robert B Kyts, Chicago, IL (US);
Interlake, Inc., Chicago, IL (US);
Abstract
A manually operable combination strapping tool for applying plastic strapping around an object includes a strap-tensioning and gripping mechanism for holding the strap in a tensioned loop around the object with the supply portion of the strap overlapping the leading end thereof, an electric heating element for melting the facing overlapping strap portions, and pressure means for pressing together the melted overlapping strap portions to form a joint therebetween. A heat regulating apparatus for the heating element includes a bimetallic relay having a reference heating means connected in parallel with the heating element for being heated at a rate such that the temperature of the reference heating means is proportional to the temperature of the associated heating element, and normally closed bimetallic switch contacts connected in series between the associated source of electric power and the parallel combination of the reference heating means and heating element, the switch contacts being responsive to heating of the reference heating means to a reference temperature for switching to an open condition de-energizing the reference heating means and the heating element, the switch means being responsive to the cooling of the reference heating means below the reference temperature for switching to a closed condition for energizing the reference heating means and heating element.