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:
Jan. 20, 2004
Filed:
Jan. 03, 2002
Applicant:
Inventors:
Grant William Ayo, Houston, TX (US);
David Eric Hanson, Katy, TX (US);
Barry Joe Beadle, Sprint, TX (US);
Anthony Allen Giacobbe, Spring, TX (US);
Mark Alan Payne, Houston, TX (US);
Assignee:
S & S Trust, Commerce City, CO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H 6/138 ; B60K 4/102 ;
U.S. Cl.
CPC ...
F16H 6/138 ; B60K 4/102 ;
Abstract
A system and method for the soft shift of a transmission connecting a power source to a well stimulation pump through a transmission. When it is desired to change gear ratios in the transmission, the transmission is caused to enter a torque converter mode from a lockup mode. The engine speed is adjusted according to a signal representative of the speed of the transmission output shaft. Once the gear ratio has been changed, the transmission is caused to enter a lockup mode from the torque converter mode.