Invention Grant
- Patent Title: Torque wrench system having multiple torque stations
- Patent Title (中): 具有多个扭矩站的扭矩扳手系统
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Application No.: US13448536Application Date: 2012-04-17
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Publication No.: US08347972B2Publication Date: 2013-01-08
- Inventor: Dale Francis , Nicholas Francis , William P. Bernard , Oswald J. Bernard , Lan Hiscox , Brian Compton , Arthur Jones
- Applicant: Dale Francis , Nicholas Francis , William P. Bernard , Oswald J. Bernard , Lan Hiscox , Brian Compton , Arthur Jones
- Applicant Address: US LA Luling
- Assignee: Francis Services, Inc.
- Current Assignee: Francis Services, Inc.
- Current Assignee Address: US LA Luling
- Agency: Garvey, Smith, Nehrbass & North, L.L.C.
- Agent Brett A. North
- Main IPC: E21B19/16
- IPC: E21B19/16

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.
Public/Granted literature
- US20120227977A1 TORQUE WRENCH SYSTEM HAVING A MULTIPLE TORQUE STATIONS Public/Granted day:2012-09-13
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