Telescoping measuring stick with signal means

Details Telescoping measuring stick with signal means Telescoping measuring stick with signal means

1986-05-05

1987-01-27

Haroian, Harry N.

Geometrical instruments

Area integrators

Electrical

33161, G01B 308

Patent

active

046385630

ABSTRACT:
A telescoping measuring stick having a signal device is provided. The measuring stick is employed in athletic events, such as the high jump and pole vault, to quickly and accurately set the height of the cross-bar. The measuring stick of the invention comprises a hollow outer tubular member, at least one inner slide member, all members marked in gradations of length, a clamp for fixing the height of each inner slide member, and an assembly member attached to the top portion of the inner slide member. The housing member includes a sensor, such as a micro-switch which is depressed upon contact with the cross-bar at the set height, a light and/or sound indicator which is activated upon closure of the micro-switch, and a power supply for providing power to the light and/or sound indicator.

REFERENCES:
patent: 1799566 (1931-04-01), Price
patent: 2245959 (1941-06-01), Brown
patent: 2356544 (1944-08-01), Swanson
patent: 2715165 (1955-08-01), Matter et al.
patent: 3226833 (1966-01-01), Lemelson
patent: 3492737 (1970-02-01), Swanson

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