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. 27, 1993
Filed:
Jun. 22, 1992
Carlos A Deamborsio, LaPrairie, CA;
Donald A Elliott, Brossard, CA;
Electrovert Ltd., La Prairie, CA;
Abstract
A preheater for a wave soldering machine has high volume convection heating permitting components on circuit boards to be heated to more uniform temperatures throughout the assembly and more rapidly without damage to the components, the assemblies or both. The machine comprises a conveyor for circuit assembly boards, a housing through which the conveyor passes having an entrance and an exit, and a plurality of heating zones in the housing extending along the conveyor. Dividers are provided between heating zones and apertured heating panels are disposed in each of the zones with a space behind each of the panels and a recirculating gap around each of the panels. A fan is positioned in the space behind each of the panels for recirculating gas, either air or inert gas through the panels and the recirculating gap.