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:
Jan. 10, 2012
Filed:
Apr. 04, 2007
Paul F. Briggs, Grand Blanc, MI (US);
Paul F. Briggs, Grand Blanc, MI (US);
Continental Automotive Systems US, Inc., Auburn Hills, MI (US);
Abstract
A method of manufacturing a venturi tubehaving a certain fluid flow direction is provided. The method provides a first core memberin a mold. The first core member has a periphery and an endof a certain size. A second core memberis provided in the mold upstream of the first core member. The second core member has a periphery and an endwith a size that is less than the certain size. At least a portion of the end of the second core member is disposed adjacent to at least a portion of the end of the first core member such that a step is defined between the first and second core members. Material is molded about the peripheries of the first and second core members such that the peripheries define a stepped fluid flow surface of a venturi tube, and so that any resulting flash occurs only in the certain flow direction.