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. 03, 2020
Filed:
Feb. 06, 2018
Applicant:
United Technologies Corporation, Farmington, CT (US);
Inventors:
Michael L. DiFrancesco, Waterbury, CT (US);
Tara L. D'Ambruoso, Oxford, CT (US);
Assignee:
RAYTHEON TECHNOLOGIES CORPORTATION, Farmington, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01D 11/02 (2006.01); F01D 11/00 (2006.01); F01D 11/08 (2006.01); F01D 11/12 (2006.01); F16J 15/44 (2006.01); F16J 15/447 (2006.01);
U.S. Cl.
CPC ...
F01D 11/025 (2013.01); F01D 11/001 (2013.01); F01D 11/08 (2013.01); F01D 11/12 (2013.01); F16J 15/44 (2013.01); F16J 15/441 (2013.01); F16J 15/442 (2013.01); F16J 15/447 (2013.01);
Abstract
A hydrostatic seal assembly includes a seal support, a seal shoe integral to the seal support and radially movable relative to the seal support. A plurality of seal teeth are located at a radially inboard surface of the seal shoe. The seal shoe is formed from a first material and the radially inboard surface is formed from a second material softer than the first material such that the radially inboard surface is abradable in the event of a rub between the radially inboard surface and an adjacent rotating component.