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:
Sep. 16, 2003
Filed:
Jul. 18, 2001
Applicant:
Inventors:
Assignee:
SMC Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B29C 6/500 ; B29C 4/310 ; B32B 3/120 ;
U.S. Cl.
CPC ...
B29C 6/500 ; B29C 4/310 ; B32B 3/120 ;
Abstract
A plurality of joined members each made of thermoplastic resin and having a fluid flow path formed of a groove and/or a hole in a junction face are vacuum-packed in a state in which the joined members are joined to each other. After a wrapped body obtained by the vacuum-packing is heated to soften the joined members, the joined members are welded to each other through the junction faces by applying fluid pressure to an entire outer periphery of the wrapping to evenly pressurize the wrapping from a periphery. Then, the pressurization is cancelled to cool the welded joined members.