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:
Mar. 04, 1986
Filed:
Nov. 28, 1983
Charles M Sharp, Mount Arlington, NJ (US);
SWS Incorporated, Landing, NJ (US);
Abstract
A method and apparatus for high speed welding are disclosed wherein a continuous weld is formed at high speed along a member with a plurality of overlapping welds formed by pulses of high density energy from a pulsed high energy density welding device such as an electronically pulsed gas laser. The movement of the member being welded is detected in the vicinity of the pulsed laser. The pulsed laser is controlled in response to the detected movement so that the energy for welding from the pulses per unit length of the member being welded is accurately controlled. The control of the laser involves pulsing of the laser in response to the detected movement of the member so that the pitch of the overlapping welds along the member is substantially constant. Also, the power of the laser pulses is controlled and adjusted in a predetermined manner in response to the detected movements. The high speed movement of the member is detected by detecting the leading edge of the moving member at or upstream of the pulsed laser and also continuously detecting the position of the moving member at or as it moves past the pulsed laser. High quality welds can be made in materials at speeds of 22-40 m/min. or more with the method and apparatus.