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. 04, 2006
Filed:
Feb. 12, 2004
Applicant:
David Irwin Ellingson, Newton, IA (US);
Inventor:
David Irwin Ellingson, Newton, IA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16L 1/12 (2006.01); B65H 20/00 (2006.01); B65H 23/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A high force traction apparatus which operates along the cable linear axis with no cable bending. The cable is encircled with links from several looping chain drives. The links have a concave friction surface to match the cable radius. Rollers apply pressure to multiple links thereby providing a high normal force on the cable. The staggered and synchronized links keep the high squeeze force evenly distributed. This allows the traction apparatus to impose a pulling force that approaches the cable tensile limit without cable damage.