Apparatus for inspecting the presence of foreign matters

Details Apparatus for inspecting the presence of foreign matters Apparatus for inspecting the presence of foreign matters

1990-09-07

1991-12-17

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356427, G01N 904

Patent

active

050737082

ABSTRACT:
An apparatus for inspecting vessels for the presence of foreign matters inspects the vessel as it undergoes a reverse rotation which follows a forward rotation. A receptacle on which the vessel is driven for rotation is mounted on a rotatable body, and a receptacle is driven by a control motor for rotation in the forward and the reverse direction. A controller which controls the control motor detects any change in the speed of rotation of the rotatable body, and responds to such change by controlling the motor so that a given, predetermined permissible inspecting condition of the vessel is maintained during its forward and reverse rotation in the presence of a change in the speed of rotation of the rotatable body.

REFERENCES:
patent: 2268098 (1941-12-01), Weathers
patent: 2317559 (1943-04-01), Stout
patent: 2331277 (1943-10-01), Stout
patent: 3133638 (1964-05-01), Calhoun
patent: 3811567 (1974-05-01), Tomita et al.
patent: 4492475 (1985-01-01), Takahashi
patent: 4680463 (1987-07-01), Lutgendorf et al.
patent: 4852415 (1989-08-01), Bogatzki et al.

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