Registers – Calculators – Tabular
Patent
1986-02-14
1987-07-14
Fuller, Benjamin R.
Registers
Calculators
Tabular
235 78R, G06C 300
Patent
active
046804536
ABSTRACT:
A vehicle performance computer for determining the performance parameters of a vehicle including: a substantially planer base having logarithmic scales representing speed, weight-to-horsepower, distance, and time arcuately disposed about a center; a substantially planar intermediate slide having logarithmic scales representing percent grade, speed factor, and top time and distance percent grades in proporation to the percent grade scale and arcuately disposed about a center; and a substantially planer top slide having logarithmic scales representing speed factors in relation to time and distance scales and arcuately disposed about a center. All three planer members are rotatably connected one to another coaxially about the three centers with the intermediate slide lying between the base and top slide. The intermediate scale also includes a window arcuately disposed about the center for viewing the weight-to-horsepower scale in relation to the percent grade scale. Scales on the top slide readably interact with the time and distance scales, the time and distance percent grade scales, and a brake tick mark disposed on the intermediate scale. The speed factor scale disposed on the intermediate slide also readably interacts with the speed scale. All scales may be adapted to the general size, weight and function of the class of vehicles.
REFERENCES:
patent: 3569994 (1971-03-01), Rau
patent: 3640453 (1972-02-01), Caillouet
patent: 3747845 (1973-07-01), Portuesi
patent: 3757092 (1973-09-01), Miller
patent: 3986002 (1976-10-01), DeMaio
patent: 4311902 (1982-01-01), Koll
patent: 4456821 (1984-06-01), Harter
Fuller Benjamin R.
Prescott Charles J.
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