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.

Date of Patent:
Feb. 20, 2007

Filed:

Mar. 19, 2004
Applicant:

James Johnson, Gregory, MI (US);

Inventor:

James Johnson, Gregory, MI (US);

Assignee:

Martinrea Industries, Inc., Dexter, MI (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B28B 21/92 (2006.01);
U.S. Cl.
CPC ...
Abstract

A tube bending fixture having a frame. An upper and lower tube support are both pivotally mounted to the frame between a first and second pivotal position. A bar is slidably mounted to the upper tube support and movable between an extended and a retracted position. At least one lower mandrel is mounted to the lower tube support and is dimensioned to fit within one end of a tube to be bent. At least one upper mandrel is mounted to the slidable bar, and the upper and lower mandrels are aligned with each other when the upper and lower tube supports are in their first pivotal position. The upper mandrel is dimensioned to fit within the second end of the tube to be bent when the bar is in its extended position. A former is secured to the frame and includes a channel which engages a midportion of the tube and conforms to the desired shape of the tube when the first and second tube supports are in their second pivotal position. A locking mechanism selectively retains the upper and lower tube supports in their second pivotal position.


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