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:
Jun. 21, 2022
Filed:
Apr. 03, 2017
Halliburton Energy Services, Inc., Houston, TX (US);
Fraser A. Wheeler, Edmonton, CA;
HALLIBURTON ENERGY SERVICES, INC., Houston, TX (US);
Abstract
A seal assembly in an apparatus including a housing, a housing bore defined by the housing, a shaft extending through the housing bore, and a shaft bore defined by the shaft. The housing bore includes an annular seal chamber between the housing and the shaft. The seal assembly includes a flexible tubular seal surrounding the shaft within the seal chamber. The tubular seal has a shaft end sealingly connected with the shaft and a housing end sealingly connected with the housing. The tubular seal divides the seal chamber into an interior seal chamber which is sealed from an exterior of the housing and an exterior seal chamber which is sealed from an interior space of the housing. At least one seal pressure balancing port is defined by the shaft and extends between the shaft bore and the exterior seal chamber.