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:
May. 22, 2018
Filed:
Aug. 31, 2015
Xuejun LI, Beijing, CN;
Chen Liu, Beijing, CN;
Jie Cui, Beijing, CN;
Other;
Abstract
A washpipe assembly is described for a passage of pressurized drilling fluid from a stationary first conduit member to a rotating second conduit member. The washpipe assembly comprises a lower union secured to the rotating second conduit member, an upper union secured to the stationary first conduit member, a floating seal assembly attached to the upper union, a rotating seal ring attached to the lower union, and a stationary seal ring attached to the floating seal assembly. The washpipe assembly also includes a washpipe suspended inside the upper union and the floating seal assembly through a waveform snap ring.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile