Boots – shoes – and leggings
Patent
1986-03-03
1989-06-06
Chin, Gary
Boots, shoes, and leggings
36442405, 280707, 73105, G01B 528
Patent
active
048377279
ABSTRACT:
A road surface detecting device has a rotary sensor for detecting the passage of teeth formed in an outer surface of a circular plate at regular intervals, which is connected to an axle of a vehicle and rotates thereabout, and generates an output signal pulsing every time when said teeth pass the rotary sensor. The output signal is inputted to a microcomputer. The microcomputer calculates period variations of the pulsing output signal and an average value of a predetermined number of the period variations. When the average value is not less than a predetermined value, the road surface is determined as being in a bad condition and when the average value is less than the predetermined value, the road surface is determined as being in a good condition; when the average value is less than the predetermined value and the most recently calculating period variation is not less than a predetermined period variation, the road surface is determined as being a rough area on a good road.
REFERENCES:
patent: 4126036 (1978-11-01), Nilan et al.
patent: 4422322 (1983-12-01), Spangler
patent: 4506909 (1985-03-01), Nakashima et al.
patent: 4651290 (1987-03-01), Masaki et al.
patent: 4666218 (1987-05-01), Masaki et al.
patent: 4672547 (1987-06-01), Masaki et al.
Ina Toshikazu
Kawai Hisasi
Tashiro Syuzaburou
Chin Gary
Nippon Soken Inc.
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