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:
Jun. 02, 2020
Filed:
Feb. 08, 2016
Spi Lasers Uk Limited, Hedge End, GB;
Daniel Anthony Capostagno, Santa Clara, CA (US);
Jacek Tadeusz Gabzdyl, East Boldre, GB;
SPI Lasers UK Limited, Hedge End, GB;
Abstract
Apparatus for laser welding a first metal part () to a second metal part (), which apparatus comprises: a laser () which emits a laser beam () in the form of laser pulses (), a scanner () for moving the laser beam () with respect to a metal surface () of the first metal part (), an objective lens () which focuses the laser beam () onto the metal surface (), and a controller () which controls the scanner () such that it moves the laser beam () with respect to the metal surface () to a plurality of focussed spots (), characterised in that the apparatus focuses the laser pulses () with a spot size () and a pulse fluence () that causes the formation of a plurality of melt pools () in the first metal part () and heat stakes () in the second metal part (), each heat stake () extends from a different one of the melt pools () and has a distal end (), and the controller () spaces the focussed spots () apart by a distance () that is small enough to cause the melt pools () to overlap and that is large enough to ensure the distal ends () of the heat stakes () are distinct and separate from each other in at least one direction ().