Tamper proof odometer

Details Tamper proof odometer Tamper proof odometer

1985-08-28

1986-12-16

Fuller, Benjamin R.

Registers

Odometers

Details

235131R, 235 1C, G01C 2200

Patent

active

046298703

ABSTRACT:
A tamper resistant and tamper-proving odometer construction. Driving of the odometer mechanism in the reverse direction to lower the count is prevented by a one-way locking mechanism associated with the lowest order digit wheel. A marking mechanism is associated with the two highest order digit wheels to clearly indicate if tampering has taken place in the lower mileage range up to 10,000 miles and in the higher mileage range up to 100,000. A continuous drive between the two highest order wheels can also be used to indicate tampering in the range below 10,000 miles.

REFERENCES:
patent: 3516603 (1970-06-01), Hachtel
patent: 3539783 (1970-11-01), Bergsma et al.
patent: 3544002 (1970-12-01), Summerer et al.
patent: 3785551 (1974-01-01), Regan
patent: 3880351 (1975-04-01), Bogart
patent: 3949201 (1976-04-01), Bogart
patent: 3949202 (1976-04-01), Bogart
patent: 4267438 (1981-05-01), Regan
patent: 4284882 (1981-08-01), Woodward

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