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. 06, 1995
Filed:
Apr. 13, 1993
Cornelis S Kooijman, Eindhoven, NL;
Nicolaas J Van Veen, Eindhoven, NL;
Antonius C Gieles, Eindhoven, NL;
Wessel J Wesseling, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
Method of positioning an object on a carrier, device suitable for carrying out this method, and suction tube suitable for use in the device. The method is for laser soldering of an electronic component (7) on a pc-board (1). The component is positioned on a contact face (3) of the pc-board (1) by a device comprising a vibration transducer (53, 69, 85) which is brought into mechanical hard contact with the component (7) while the component is held against the pc-board. Subsequently, a laser (205, 207) heats solder present on the contact face and vibrations generated by the laser in the solder are passed on to the vibration transducer while the mechanical hard contact is being maintained. The vibration transducer then checks for the presence of mechanical contact between the object and the carrier and/or the melting of the solder from a comparatively strong decrease in the vibration amplitude during melting of the solder.