Portable gyroscopic golf ball centerplane marking device

Details Portable gyroscopic golf ball centerplane marking device Portable gyroscopic golf ball centerplane marking device

1990-05-07

1990-12-04

Eickholt, Eugene H.

Printing

Special article machines

Rotating object

101DIG40, B41F 1708

Patent

active

049745115

ABSTRACT:
A device consisting of a housing, an electrical motor and an activation switch. The housing is cylindrical and basically hollow, with a battery compartment located at its lower end and an arched cover at its upper end. The arched cover has a semi-circular marking slot on it. The arched cover fits frictionally on the upper part of the housing. The electric motor has a driving shaft on its upper end which drives a rotor dish to rotate. The activation switch is electrically connected to the electric motor to activate or deactivate the rotor dish.

REFERENCES:
patent: 1045340 (1912-11-01), Supplee
patent: 1527691 (1925-02-01), McNab et al.
patent: 1963494 (1934-06-01), Humphrey
patent: 1999647 (1935-04-01), Atti
patent: 4086851 (1978-05-01), Brandell
patent: 4441716 (1984-04-01), Chen
patent: 4803922 (1989-02-01), Dennesen

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