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. 24, 2014
Filed:
Nov. 22, 2013
Drilling Technological Innovations, Llc, Houston, TX (US);
David Trent, Houston, TX (US);
Vamshi Gundameedi, Houston, TX (US);
Drilling Technological Innovations, LLC, Houston, TX (US);
Abstract
A riser recoil valve for use with a tensioning system of a drilling rig to control a riser recoil event with a choke spool housing with a hydraulic tank fluid port, a spool retainer port, an actuator opening with a rotation limiting keyway and a choke spool disposed within the choke spool housing. An actuator system with a cover, electrical and directional connections is connected and retains the choke spool housing which is further retained within the choke spool housing by a retaining spool which has an orifice for hydraulic fluid. The choke spool is connected to the choke spool housing by bearing surfaces on the choke spool and the choke spool housing. The choke spool is comprised of an outer spool and a rotatable inner spool, both containing a plurality of bidirectional flow holes. The rotatable inner spool has a shaft which contains pressure neutralization holes.