Measuring and testing – Dynamometers – Responsive to torque
Reexamination Certificate
2005-04-07
2010-06-29
Caputo, Lisa M (Department: 2855)
Measuring and testing
Dynamometers
Responsive to torque
Reexamination Certificate
active
07743673
ABSTRACT:
A power wrench (10) for turning a screw is supplied by a hydraulic unit (25) that contains a positive displacement pump (26) and supplies a defined rate of flow. The pressure in a hydraulic pressure line (28) is measured by a pressure sensor (32) and provided to a control unit (31). The volume flow of the hydraulic unit (25) is determined in amount per unit of time. The piston stroke per unit of time can be determined due to the fact that the filling volume of the hydraulic cylinder is known. The piston acts upon a lever system that turns the moving part. The turning angle per unit of time can be determined due to the fact that the lever length is known. This makes it possible to dispense with an angle measuring device and to determine the turning angle merely by measuring pressure.
REFERENCES:
patent: 4794825 (1989-01-01), Schmoyer
patent: 4941362 (1990-07-01), Tambini
patent: 5668328 (1997-09-01), Steber et al.
patent: 5792967 (1998-08-01), Steber et al.
patent: 6546839 (2003-04-01), Jamra et al.
patent: 7000486 (2006-02-01), Wagner et al.
patent: 2004/0177704 (2004-09-01), Wagner et al.
patent: 2005/0210872 (2005-09-01), Wagner
patent: 198 13 900 (1999-09-01), None
patent: 102 22 159 (2003-11-01), None
patent: 0 918 597 (1999-02-01), None
patent: WO03 013 797 (2003-02-01), None
Andres Guenter
Sittig Ulf
Thelen Bernd
Wagner Paul-Heinz
Caputo Lisa M
Davis Octavia
Miles & Stockbridge P.C.
Schaffer, Esq. David R.
Wagner Vermögensverwaltungs-GmbH & Co. KG
LandOfFree
Method for the angle-controlled turning of a part does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for the angle-controlled turning of a part, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for the angle-controlled turning of a part will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4230990