Invention Grant
- Patent Title: Device for test running power nut runners
- Patent Title (中): 用于试运行的电动螺母扳手的装置
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Application No.: US10582902Application Date: 2004-12-16
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Publication No.: US07640785B2Publication Date: 2010-01-05
- Inventor: Anders Rolf Mikael Johnson
- Applicant: Anders Rolf Mikael Johnson
- Applicant Address: SE Nacka
- Assignee: Atlas Copco Tools AB
- Current Assignee: Atlas Copco Tools AB
- Current Assignee Address: SE Nacka
- Agency: Frishauf, Holtz, Goodman & Chick, P.C.
- Priority: SE0303428 20031219
- International Application: PCT/SE2004/001896 WO 20041216
- International Announcement: WO2005/059496 WO 20050630
- Main IPC: G01L25/00
- IPC: G01L25/00

Abstract:
A device for test running of power nut runners comprises a main body (10;50) with a nut (11;54), a screw (12;52) with a nut runner engaging head (13;55), a clamping element (14;56) co-operating with the screw (12;52), and spring unit (17;59) to be clamped between the clamping element (14;56) and the main body (10;50) to generate a torque resistance on the screw (12;52), wherein a one-way clutch (24;64) is provided between the nut (11;54) and the main body (10;50) to prevent rotation of the nut (11;54) at rotation of the screw (12;52) in the tightening direction and to permit rotation of the nut (11) when rotating the screw (12;52) in the loosening direction, a friction clutch (30;72,73) between the nut (11;54) and the main body (10;50) is arranged to prevent rotation of the nut (11;54) during loosening of the screw (12;52), and a lock element (34;70) secured to the screw (12;52) is arranged to rotationally lock the screw (12:52) to the nut (11;54) at continued rotation of the screw (12;52) in the loosening direction.
Public/Granted literature
- US20070107489A1 Device for test running power nut runners Public/Granted day:2007-05-17
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