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:
Jul. 16, 2024
Filed:
Jun. 11, 2020
Pratt & Whitney Canada Corp., Longueuil, CA;
Ludvik Martinu, Longueuil, CA;
Amaury Kilicaslan, Longueuil, CA;
Jolanta Sapieha, Pointe-Claire, CA;
Oleg Zabeida, Cote St-Luc, CA;
Joel Larose, Longueuil, CA;
Etienne Bousser, Longueuil, CA;
Elvi Dalgaard, Montreal, CA;
PRATT & WHITNEY CANADA CORP., Longueuil, CA;
Abstract
An article has a cavity defined by an inner surface, the cavity having a size such that a largest sphere placeable in the cavity has a diameter of less than 7 cm and a smallest sphere placeable in the cavity has a diameter of 0.5 mm; and a hard coating on the inner surface, the hard coating having a hardness between 18 to 100 GPa, the hard coating distributed on the inner surface such that a ratio of a coating thickness at a first region of the hard coating to that at a second region of the hard coating ranges from 0.75 to 1.33.