Patents Represented by Attorney Norman E. Burnell

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  • Device for measuring the tightening angle on a wrench
    Patent number: 4218828
    Abstract: An improved device for measuring the tightening angle on a wrench. The directionally fixed member is a liquid body which may include solid particles or a turbine wheel, the relative velocity of which is monitored to determine the relative motion of the liquid with respect to the wrench.
    Type: Grant
    Filed: December 26, 1978
    Date of Patent: August 26, 1980
    Assignee: C. Plath KG
    Inventors: Johann-Peter Holting, Armin Rahn, Hermann-Jochen Zerver