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:
Nov. 27, 2012
Filed:
Oct. 01, 2009
Applicants:
Eric Durocher, Vercheres, CA;
John Pietrobon, Outremont, CA;
Nicolas Grivas, Dollard des Ormeaux, CA;
Inventors:
Eric Durocher, Vercheres, CA;
John Pietrobon, Outremont, CA;
Nicolas Grivas, Dollard des Ormeaux, CA;
Assignee:
Pratt & Whitney Canada Corp., Longueuil, Quebec, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01D 25/04 (2006.01); F01D 25/28 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for centering an engine structure such as a bearing housing is provided which may be used, for example, during assembly of a mid turbine frame or other engine case structure. In one aspect, the method includes using spacers with respective radial spokes which connect inner and outer portions of the case. In another aspect, centring may be provided by machining selected contacting surfaces of selected components.