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. 16, 2024
Filed:
May. 03, 2022
Applicant:
Caterpillar Global Mining Equipment Llc, Denison, TX (US);
Inventors:
Assignee:
Caterpillar Global Mining Equipment LLC, Denison, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 19/084 (2006.01); E21B 7/02 (2006.01);
U.S. Cl.
CPC ...
E21B 19/084 (2013.01); E21B 7/022 (2013.01);
Abstract
A hydraulic tensioning system is associated with a wire rope feed system of a drilling rig for applying tension to the hoist and pulldown ropes during hoist and pulldown operations. The hydraulic tensioning system includes a hydraulic tensioning circuit with a hoist hydraulic circuit directing hydraulic fluid to a hoist actuator applying tension to the hoist wire rope and a pulldown hydraulic circuit directing hydraulic fluid to a pulldown hydraulic actuator applying tension to a pulldown wire rope. A hydraulic control valve can selectively direct flow to the hoist and pulldown hydraulic circuits.