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. 26, 2000
Filed:
May. 01, 1997
Applicant:
Inventors:
Duane J Pontbriand, Metamora, MI (US);
David Bensko, Oscoda, MI (US);
Gary O Klinger, Warren, MI (US);
Assignee:
ITT Manufacturing Enterprises, Inc., Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
138121 ; 138119 ; 138137 ; 138D / ;
Abstract
A tube having a cylindrical main body and a thin wall defined by an inner surface and outer surface. The tube includes a first segment having a generally constant cylindrical cross-section and another segment having a variable cross-section containing convolutions to allow for flexing of the tube during installation. The convolutions extend less than the entire circumference of the tube or have tapered side walls which substantially reduce the size of the convolutions as the convolutions extend from one position along the circumference to a second position.