The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 31, 1994
Filed:
May. 14, 1991
Ludwig Dreilich, Kronberg/Ts, DE;
Karl-Friedrich Woersdoerfer, Budenheim, DE;
Thomas Egerer, Karben, DE;
Reinhold Worms, Hoexter, DE;
Alfred Teves GmbH, , DE;
Abstract
A simple-design device for the measurement of coefficients of friction depending on the relative speed between a sample (8) and a brake disc (13) features a simple-design set-up and is well suited for the measurement of the changes of the coefficient of friction in the starting and in the stopping phases of the friction surface (13). The device operates by pressing the sample (8) with a defined pressing force (K1, K2) onto the friction surface (13) and simultaneously measures that force (K3) with which the samples (8) are dragged by the friction surface (13) transversely to the pressing force (K1, K2) as a function of time and speed. A brake disc can be provided as a friction surface (13). A single source of forces (K1, K2) for the pressing force can also be provided, resulting in a simple-design and sturdy structure for the device.