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:
Nov. 20, 1979
Filed:
Feb. 22, 1978
Sammy J Ferguson, Dallas, TX (US);
William R Yohe, Garland, TX (US);
Recognition Equipment Incorporated, Dallas, TX (US);
Abstract
A severing and sealing tool having a single head with electrically resistive wires passing there across. The wires are connected to an electric source which provides power selectively to the wires for severing and sealing a thermoplastic material such as a strap along an overlapping portion thereof. The electrically resistive wire is heated to a temperature sufficiently high to melt the thermoplastic material, but not high enough to decompose the material. The metallic body of the tool is formed in two parts with an insulating material disposed between the two parts with the electrically resistive wires having an end connected to each of the parts. One electrically resistive wire traverses completely across the predetermined area of the head which comes in contact with the thermoplastic material. The other electrically resistive wire meanders through a part of the predetermined area of the head which is in contact with the thermoplastic material. Electrical energy is supplied to each of the two parts of the body of the tool and the electrically resistive wires are insulated except at their ends from the metallic substance of the tool for providing the necessary electrical circuit to provide electrical power to the electrical resistive wires thereby heating the wires.