Ground contact area measurement device

Details Ground contact area measurement device Ground contact area measurement device

1982-11-30

1984-11-20

Martin, Jr., William D.

Geometrical instruments

Area integrators

Electrical

33 1M, 200 86A, G01B 732

Patent

active

044830769

ABSTRACT:
Measurement of the area and shape of contact between a vehicle's wheels or racks and the surface over which it moves is automated by having the vehicle drive over an array of switches connected in a matrix including X and Y conductors. The matrix is systematically scanned to produce a pulse train with one pulse therein for each closed switch, with the locations of said pulses indicating the shape of the area of contact. Circuit means are provided to count the number of pulses to indicate the area of contact and to operate a small scale display which indicates the shape of the area of contact.

REFERENCES:
patent: 981552 (1911-01-01), Gotz
patent: 1688308 (1928-10-01), Harding
patent: 2525824 (1950-10-01), Nagel
patent: 3264739 (1966-08-01), Berlinsky et al.
patent: 3470360 (1969-09-01), Rust et al.
patent: 3654407 (1972-04-01), Kepner et al.
patent: 3748443 (1973-07-01), Kroll et al.

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