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:
Jan. 25, 2011
Filed:
Jan. 16, 2007
Michael James Dewhirst, Northants, GB;
Michael James Dewhirst, Northants, GB;
Crompton Technology Group Ltd., Banbury, GB;
Abstract
A fiber reinforced composite shaft bearing a metallic flanged end coupling attached to the outside diameter through a concentric cylindrical torsional joint is provided. The composite shaft is press fitted into a flanged metallic end coupling including a multiplicity of teeth running parallel to the tube axis which cut longitudinal channels into the outside diameter of the composite shaft wall during the press fit process. Pairs of inverted troughs adjacent to and running parallel to the cutting teeth in the serrated region allow space for the redistribution of the composite material and debris formed during the press fitting process. This combined action forms a mechanical interface capable of supporting torsional and axial stresses. A structural adhesive may be applied to the joint region to form a secondary joint. In this case the composite formed between the cutting debris and the adhesive fills the trough channels.