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:
May. 17, 1988
Filed:
Jul. 14, 1986
Gerald R Trudell, Pinconning, MI (US);
AP Industries, Inc., Toledo, OH (US);
Abstract
A bending apparatus is provided for rectangular tubes. The apparatus comprises a bending die, a wiper die, a clamp die, a pressure die and a mandrel. The clamp die and pressure die are provided with tongues which are engageable in corresponding grooves in the bending and wiper dies. The tongues and the clamping and pressure surfaces of the respective dies are dimensioned to enable the rectangular tube to be bent about either of its two axes by placing the tube on either of the opposed sides of the respective tongues. The tongue of the pressure die is movable to facilitate the tangential advancement of the pressure die under the action of a booster for urging the tubing into the bend. The mandrel includes a plurality of movable blocks. A plurality of springs interconnect the blocks to facilitate alignment. The blocks are mounted to a replaceable head which can be removed and replaced when worn. The mandrel includes channels for lubrication.