Boots – shoes – and leggings
Patent
1983-06-01
1986-12-02
Caldwell, Sr., John W.
Boots, shoes, and leggings
364426, 364463, 364734, 73517B, 73 65, 73121, G06F 1520, G01P 342
Patent
active
046270116
ABSTRACT:
A vehicle monitoring device 10 consists of a damped-pendulum transducer 12 coupled to a potentiometer 14. The analog output of the potentiometer 14, following a braking test with the vehicle concerned, is sampled in a peak/trough detector 16. A microprocessor 18 comprising signal processing unit 20 and arithmetic unit 22 controls the sampling and sums, averages and displays the output of microprocessor 18 on a digital display 24. If desired, a suitably programmed small computer may be used in place of microprocessor 18. According to one aspect of the invention, the device 10 is adapted to serve as a brake-efficiency meter. In this case, the display 24 will be arranged to display the average, or currently-measured, deceleration, as the case may be. In an alternative application, the device 10 is adapted to serve as a safe-slope meter. In this case, the display 24 will be arranged to display the safe-slope limit in degrees and the device will preferably also be operable to give audio and/or visual warnings to the driver of the vehicle when the angle of the vehicle reaches some predetermined relationship with the critical descent angle.
REFERENCES:
patent: 3079080 (1963-02-01), Mason
patent: 3638211 (1972-01-01), Sanchez
patent: 4280189 (1981-07-01), Takato et al.
patent: 4408290 (1983-10-01), Kubo et al.
H. B. Spencer, G. M. Owen, A Device for Assessing the Safe Descent Slope of Agricultural Vehicles, reprinted from J. Agr. Engng. Res. (1981) 26, pp. 277-286.
Owen Gwilym M.
Spencer Henry B.
Angotti Donna
Caldwell Sr. John W.
National Research Development Corp.
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