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:
Apr. 26, 2016
Filed:
Jun. 14, 2010
Applicants:
Timothy Toliver, Bowling Green, OH (US);
Tony Kime, Chapeau, CA;
Hubert Kossner, Hassfurt, DE;
Inventors:
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L 9/12 (2006.01); B29C 49/00 (2006.01); B29C 47/12 (2006.01); B29C 57/02 (2006.01); B29D 23/00 (2006.01); F16L 25/00 (2006.01); B29C 47/00 (2006.01); B29C 65/02 (2006.01); B29C 65/48 (2006.01); B29K 23/00 (2006.01); B29K 27/06 (2006.01); B29K 105/12 (2006.01); B29L 16/00 (2006.01); B29L 23/00 (2006.01); B29L 31/24 (2006.01); B29L 31/60 (2006.01); B29C 47/02 (2006.01); B29C 47/06 (2006.01);
U.S. Cl.
CPC ...
B29C 49/0021 (2013.01); B29C 47/126 (2013.01); B29C 57/02 (2013.01); B29D 23/003 (2013.01); F16L 25/0054 (2013.01); B29C 47/0023 (2013.01); B29C 47/0033 (2013.01); B29C 47/021 (2013.01); B29C 47/065 (2013.01); B29C 65/02 (2013.01); B29C 65/48 (2013.01); B29C 2791/006 (2013.01); B29K 2023/065 (2013.01); B29K 2023/12 (2013.01); B29K 2027/06 (2013.01); B29K 2105/12 (2013.01); B29L 2016/00 (2013.01); B29L 2023/22 (2013.01); B29L 2031/24 (2013.01); B29L 2031/605 (2013.01); Y10T 29/49817 (2015.01); Y10T 156/1028 (2015.01);
Abstract
A multi-layer bell is formed from the outer shell of a multi-layer pipe in a secondary process, thereby allowing the extrusion process to be conducted at normal speeds. The bell may include a strain limiting membrane fused or mechanically secured between the outer shell extrusion layer and the inner liner extrusion layer, increased hoop or circumferential stiffness. This invention allows the extrusion process to be in its simplest form, with no adjustments to the corrugator or extruder speeds.