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. 31, 2012
Filed:
Oct. 09, 2009
Saroj Kumar Sahu, Mountain House, CA (US);
Suresh Kumar Natarajan, Fremont, CA (US);
Bruce Conway, La Honda, CA (US);
Saroj Kumar Sahu, Mountain House, CA (US);
Suresh Kumar Natarajan, Fremont, CA (US);
Bruce Conway, La Honda, CA (US);
Deeya Energy, Inc., Fremont, CA (US);
Abstract
A multi-walled tubing assembly includes an outer corrugated tube and an inner tube received in the outer tube, and may receive an insert. The inner tube is made from a resilient material. The outer tube is structurally rigid. The insert may be plain and used in conjunction with one or more adhesives. The insert may include a section with barbs or teeth which, once inserted into the inner tube, engage with the corrugations of the outer tube. Some embodiments result in a good seal and mechanically fix the tubing assembly.