Method and Apparatus for Monitoring a Contact between Two Surfaces

Ari Lehto (Inventor), Helena Ronkainen (Inventor), Jari Koskinen (Inventor)

Research output: Patent


Method for monitoring a contact between two surfaces, particularly two surfaces moving relative to each other, which contacts between two surfaces appear in sliding and rolling bearings, in gear trains, and in other sliding or rolling contacts of a machine construction. In the method, a recess (5), which has a bottom (3), is created behind the first surface (8) in the contact, and which recess extends towards the first surface (8). A detection device (4, 10) is placed at a distance from the bottom, so that a detection space (2) is formed between the detection device (4, 10) and the bottom (3) of the recess. Now the detection device (4, 10) can be used to monitor the changes taking place in the detection space (2).

Original languageEnglish
Patent numberWO2006064086
IPCG01M 13/ 04 A I
Priority date16/12/2004
Publication statusAccepted/In press - 22 Jun 2006
MoE publication typeH1 Granted patent


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