Electrical transmission or interconnection systems – Personnel safety or limit control features
Patent
1991-02-19
1993-03-30
Gaffin, Jeffrey A.
Electrical transmission or interconnection systems
Personnel safety or limit control features
307116, 192131R, F16P 300
Patent
active
051987023
ABSTRACT:
A control and safety system for electrically operated devices with a cutting tool (9) connected to a reversible electric motor (88), and control means for halting and reversing the movement of said motor comprises a pair of electrically conducting gloves (A) and (B) adapted to be worn by the operator and connected by a conducting wire (2,3) to a box (4) fixed to the operator's body containing a rechargeable battery and an electronic sensor-transmitter circuit (120) arranged to emit a light pulse when the golves are both worn by the operator and to interrupt the light pulse when one of the two gloves or part of the operator's body accidentally makes contact with any metal part of the device (10). An optical fiber (12) connects said box (4) to the base of the device where it is connected to a receiving control circuit (121) located thereat. A manually operable reset pushbutton is mounted on said box to reset the conditions of the electronic circuit contained therein after each operation; and a pedal (23) is mounted on the base of the device and arranged to energize one or the other or neither of the circuits of the reversible electric motor (88) via a pair of relays (R1, R2), of which one is normally closed and the other is normally open.
REFERENCES:
patent: 721270 (1903-02-01), Zeckendorf
patent: 941726 (1909-11-01), Pfalzgraf
patent: 2978084 (1961-04-01), Vilkaitis
patent: 3011610 (1961-12-01), Stiebel et al.
patent: 3047116 (1962-07-01), Stiebel et al.
patent: 3370233 (1968-02-01), Morelock
patent: 3785230 (1974-01-01), Lokey
patent: 4026177 (1977-05-01), Lokey
patent: 4039060 (1977-08-01), Williams et al .
patent: 4195722 (1980-04-01), Anderson et al.
patent: 4321841 (1982-03-01), Felix
patent: 4391358 (1983-07-01), Haeger
patent: 4621300 (1986-11-01), Summerer
patent: 4965909 (1990-10-01), McCullough et al.
patent: 5025175 (1991-06-01), Dubois III
Grasselli Giorgio
McCullough Timothy J.
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