Abrading – Precision device or process - or with condition responsive... – Condition responsive control for sandblasting
Patent
1997-10-28
1999-08-10
Scherbel, David A.
Abrading
Precision device or process - or with condition responsive...
Condition responsive control for sandblasting
451102, 451 3, 451 38, 451 35, 451 90, 364138, 385 19, B24C 300
Patent
active
059349719
ABSTRACT:
An emergency control system for selectively activating and deactivating an apparatus. The system includes a fiber optic transmitter for emitting radiation and a fiber optic receiver for receiving and measuring a wavelength and an intensity of the radiation. A manually-operated fiber optic switch is placed in optical communication with the fiber optic transmitter and the fiber optic receiver. In operation, the switch is selectively actuated, thereby selectively opening and closing a fiber optic circuit defined by the transmitter, receiver, and the switch. The system further includes a relay controller in communication with the fiber optic receiver, such that the relay controller is actuated when the fiber optic receiver receives a predetermined wavelength and intensity of radiation from the transmitter. When the relay controller is actuated, it allows a signal to pass through the relay to a point of use. In this manner, the operation of the fiber optic switch selectively controls the presence of the signal at the point of use, which can be a spring loaded solenoid valve or other electromechanical actuator capable of deactivating an apparatus.
REFERENCES:
patent: 4306314 (1981-12-01), Griffiths
patent: 5024029 (1991-06-01), Abbott et al.
patent: 5110189 (1992-05-01), Haines
patent: 5369410 (1994-11-01), Reich
Nguyen Phuong
Thompson Bob
Nguyen George
Scherbel David A.
United States Filter Corporation
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