Measuring and testing – Frictional resistance – coefficient or characteristics
Reexamination Certificate
2007-11-06
2007-11-06
Williams, Hezron (Department: 2856)
Measuring and testing
Frictional resistance, coefficient or characteristics
C073S007000, C073S010000, C073S866000
Reexamination Certificate
active
10535282
ABSTRACT:
The present invention relates to a device for measuring the static and/or dynamic friction coefficient of a surface, in particular a natural or artificial grass surface, which device comprises a housing placed on supports, which is to be positioned on the surface to be examined; a rotatable shaft, which is vertically disposed in said housing; a body connected to the end of said shaft that faces towards the surface, which body comprises a contact surface which can be brought into contact with the surface to be examined; as well as measuring means for measuring, during operation, the torque caused by the friction between the surface to be examined and the contact surface of the rotating body. The object of the present invention is to provide a device for measuring the static and/or dynamic friction coefficient of a surface which provides a more reliable and reproducible measuring result and which is furthermore user-friendly and easy to transport. According to the invention, the device is to that end characterized in that the contact surface of the body is in line with the axis of rotation of the rotatable shaft.
REFERENCES:
patent: 2638776 (1953-05-01), Aines
patent: 3516281 (1970-06-01), Taub
patent: 3518872 (1970-07-01), Tiner et al.
patent: 3975940 (1976-08-01), Brungraber
patent: 4051713 (1977-10-01), Bao et al.
patent: 4081989 (1978-04-01), Majcherczyk
patent: 4096733 (1978-06-01), Cohen
patent: 4130007 (1978-12-01), Hayashi
patent: 4194387 (1980-03-01), Hofbauer et al.
patent: 4327572 (1982-05-01), Pitman et al.
patent: 4432223 (1984-02-01), Paquette et al.
patent: 4594878 (1986-06-01), Abe et al.
patent: 4633702 (1987-01-01), Kaiser et al.
patent: 4712418 (1987-12-01), Augustin
patent: 5195357 (1993-03-01), Takino et al.
patent: 5259236 (1993-11-01), English
patent: 5576478 (1996-11-01), Brungraber
patent: 6289743 (2001-09-01), Norton
patent: 6349587 (2002-02-01), Mani et al.
patent: 6679106 (2004-01-01), Abe et al.
patent: 7000451 (2006-02-01), Wegand et al.
patent: 2003/0101793 (2003-06-01), Evans
patent: 2004/0187556 (2004-09-01), Abe et al.
patent: 264526 (1988-04-01), None
patent: 2751748 (1998-01-01), None
patent: 1540982 (1979-02-01), None
patent: 2358931 (2001-08-01), None
patent: 57125832 (1982-08-01), None
patent: 60088352 (1985-05-01), None
patent: 02021240 (1990-01-01), None
patent: 04359134 (1992-12-01), None
patent: WO02/63279 (2002-08-01), None
Medoff, Howard, “Problems in Defining and Measuring Friction on Natural and Artificial Playing Surfaces”, 1995, IEEE, pp. 171-174.
Monckton et al., “Design and Development of an Automated Footwear Testing System”, 2002, IEEE, pp. 3684-3689.
Bierma Gerben Christiaan
Hazenberg Hendrik
Olde Weghuis Marinus Hendrikus
Witbreuk Ingo Wynand
Jacobson & Holman PLLC
Rogers David A.
Ten Cate Thiolon B.V.
Williams Hezron
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