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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.:

US 5024884 B1

PDFFull Text
Date of Patent:
Jun. 18, 1991

Filed:

Jan. 23, 1987

Abradable seal having particulate erosion resistance

Applicant:
Inventor:

William F Otfinoski, Meriden, CT (US);

Assignee:

United Technologies Corporation, Hartford, CT (US);

Attorneys:

Nessler; C. G.

Rashid; J. M.

Primary Examiner:

Thomas J Herbert

Int. Cl.
CPC ...
B32B / ; B32B / ; B05D / ; B05D / ;
U.S. Cl.
CPC ...
428328 ; 4151744 ; 427 34 ; 427205 ; 4273835 ; 4273839 ; 427421 ; 427423 ; 427427 ; 428336 ; 428457 ; 428698 ; 428704 ;
Abstract

Porous plasma arc sprayed powder metal abradable materials used in knife edge labyrinth seals of gas turbine engines have their resistance to erosion improved when a thin ceramic surface layer containing fine aluminum particulate is applied. The fine equiaxed particulate and ceramic are applied as an aqueous liquid so that both the particulate and cermic matrix material fill the surface pores, without penetrating further into the powder metal material and thereby adversely affecting desirable abradability characteristics.

Find Patent Forward Citations

Otfinoski, William. (1991). Abradable seal having particulate erosion resistance (U.S. Patent No. 5024884). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5024884

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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