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:
Dec. 07, 2004
Filed:
Jan. 30, 2003
Paris E. Blair, Casper, WY (US);
Joseph L. Ficken, Casper, WY (US);
Daniel J. Richards, Casper, WY (US);
Hunting Performance, Inc., Casper, WY (US);
Abstract
A downhole mud motor ( ) is disclosed which has an improved bearing mandrel ( ) and a bearing stop ( ) to transfer a larger percentage of the weight of a drill string to the bit. Also improved sealing systems ( ) ( ) ( ) ( ( ) for the transmission section and bearing section ( ) ( ) ( ) ( ) ( ) prevent drilling mud from entering critical components. A piston stop is provided to prevent the piston from damaging other parts as the piston moves under pressure. Compensating pressure assembly ( ) preferably including a disk ( ) is placed in the lower housing ( ) to prevent pressure from building up in the bearing section ( ). A combination of grooved ball seats ( ) and circumferentially spaced balls ( ) are provided in the transmission section ( ) ( ) to allow for greater flow of lubricant around the ball bearings.