Relative motion pinwheel

Details Relative motion pinwheel Relative motion pinwheel

1992-10-05

1993-11-30

Cuchlinski, Jr., William A.

Geometrical instruments

Miscellaneous

Light direction

33 1SD, 33562, 33431, G01C 2120

Patent

active

052653447

ABSTRACT:
An apparatus for visualizing relative motion between two moving objects in two-dimensional plane is provided. A planar base has a first compass rose printed thereon. Rotatably attached to the center of the first compass rose is a means for indicating a present course of a first moving object relative to a true bearing indication on the first compass rose. A second moving object assembly consists of a second compass rose rotatably attached to a means for indicating a present course of the second moving object relative to a true bearing indication on the second compass rose. The true bearing indication on the second compass rose is aligned to be equivalent to the true bearing indication on the first compass rose. Attached at the centers of the first and second compass roses is a means for tethering the second moving object assembly to the first compass rose. The second compass rose is free to rotate about its center and the second moving object assembly is free to revolve in a single plane around the center of the first compass rose. The tethering means indicates a line of relative bearing from the first moving object to the second moving object.

REFERENCES:
patent: 2339516 (1944-01-01), Quillen
patent: 4095342 (1978-06-01), Oertle
patent: 4637143 (1987-01-01), Telles

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