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. 17, 2012
Filed:
Sep. 19, 2011
Dale Francis, Houston, TX (US);
Nicholas Francis, Luling, LA (US);
William P. Bernard, Luling, LA (US);
Oswald J. Bernard, Luling, LA (US);
Lan Hiscox, Houston, TX (US);
Brian Compton, Cypress, TX (US);
Arthur Jones, Houston, TX (US);
Dale Francis, Houston, TX (US);
Nicholas Francis, Luling, LA (US);
William P. Bernard, Luling, LA (US);
Oswald J. Bernard, Luling, LA (US);
Lan Hiscox, Houston, TX (US);
Brian Compton, Cypress, TX (US);
Arthur Jones, Houston, TX (US);
Francis Services, Inc., Luling, LA (US);
Abstract
An improved multi-bolt and nut torque wrench for installing and removing bolts or nuts from flanged joints or the like which includes a plurality of torque stations having a plurality of high torque wrenches for engaging the heads of the bolts or nuts during a high torque phase of removal or installation; a plurality of low-torque motors operatively engaged with the wrenches for rotating the bolts or nuts during the low torque phase of removal or installation; a source of hydraulic fluid for driving the low-torque motors during the low-torque phase, and driving the high-torque wrenches during the high torque phase; and a mechanism for switching between the two phases depending on the torque needed.