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:
Jul. 19, 1977
Filed:
Dec. 22, 1975
Paul W Johnson, Decatur, IN (US);
E-Systems, Inc., Dallas, TX (US);
Abstract
Small electrical resistors, such as are used in circuits of comparatively low power, are automatically fabricated on a winding machine including a chuck assembly for facilitating the start and finish of a winding operation. The chuck assembly consists of a first jaw rotatably mounted with respect to a second jaw from a wire receiving position to a wire gripping position. The chuck is closed to grip a resistance wire at the start of a winding operation and an automatic welder operates to weld the wire to a metallic terminal cap positioned at one end of a resistor core. Upon completion of the welding operation, the jaws of the chuck assembly are opened and a winding head operates to rotate the resistor core to begin a winding operation. The winding operation continues for a preset number of turns at which time the jaws of the chuck assembly are moved to a closed position to clamp the resistance wire. The welder is again actuated to attach the resistance wire to a second terminal cap to complete the resistor construction. A wire cutter is actuated to sever the welded end of the resistance wire from the wire held in the jaws of the chuck assembly. The operation is repeated to wind another resistor.