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:
Apr. 03, 2001
Filed:
Apr. 08, 1999
Victor Singer, Newark, DE (US);
Clyde E. Carr, Jr., New London, PA (US);
Cordant Technologies Inc, Salt Lake City, UT (US);
Abstract
A nozzle assembly including a nozzle structure and liner is disclosed. The nozzle structure is made of at least one carbon-based material and includes a nose tip region, a restricted cross-sectional throat region, and an exit cone region that collectively provide an interior surface configured to define a converging-diverging pathway. The liner includes leg and body portions. The leg portion protrudes over an edge or into a groove of the nozzle structure to engage the liner to the nozzle structure. The body portion of the liner covers at least the throat region of the nozzle structure along the flow path to obstruct high temperature combustion products from causing recession of the nozzle structure. The erosion-resistant liner has at least one irregularity that extends, in a continuous manner, radially at least along the leg portion and, optionally, longitudinally along the body portion. The irregularity is constructed and arranged to permit thermal deformation of the liner in response to thermally induced hoop stresses encountered in the nozzle structure during motor operation so as to reduce or eliminate thermal fracturing of the liners. Suitable irregularities include, by way of example, clearances in a circumferentially discontinuous liner.