Temper-proof vehicle hub odometer

Details Temper-proof vehicle hub odometer Temper-proof vehicle hub odometer

G - Physics

01

C

235/134

G01C 22/00 (2006.01)

Patent

CA 1059091

ABSTRACT OF THE DISCLOSURE A device for distance measuring and recording of the type secured to a vehicle wheel hub having a plurality of digit wheels whose digits are disposed to face a slot for receiving a punch card for printing the instant value as recorded. The digit wheels are each driven by a pinion, the pinions being rotatable about a common axis. In order to prevent tampering with the device by a tool inserted in the card slot to turn the digit wheels to a false figure, at least one end of the axis of the pinions is mounted in resilient fashion such that on exceeding a predet- ermined pressure in radial direction at least some pinions become disengaged from the respective digit wheels thus releasing the digit wheels to become randomly arranged whereby subsequent punching of the card results in an out-of-line print showing that the device had been tampered with.

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