Title: Fiber-optic photoelectric power control device

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Claims: What is claimed is:

1. A power control system comprising:

a. a power control device;

b. first and second light transmission means;

c. a light controller;

d. said power control device including a light generator, a light sensitive device and an electronic switch;

e. the output of said light generator being applied to the input of said light controller by said first light transmission means;

f. the output of said light controller being operatively connected to the input of said light sensitive device by said second light transmission means;

g. the output control signal of said light sensitive device being operatively connected to one input of said electronic switch;

h. a power line operatively connected to another input of said electronic switch whereby said power output of said electronic switch is controlled as a function of the control signal applied to said one input thereof;

i. said light controller including light controlling means for controlling the light transmitted from said first light transmission means to said second light transmission means;

j. said first and second light transmission means are elongated fiber optic elements;

k. said light controller and light transmission means are remotely positioned from said power control device; and

l. said remotely positioned light controller is placed in an atmosphere that reacts to electrical arcing.

2. A power control system comprising:

a. a power control device;

b. first and second light transmission means;

c. a light controller;

d. said power control device including a light generator, a light sensitive device and an electronic switch;

e. the output of said light generator being applied to the input of said light controller by said first light transmission means;

f. the output of said light controller being operatively connected to the input of said light sensitive device by said second light transmission means;

g. the output control signal of said light sensitive device being operatively connected to one input of said electronic switch;

h. a power line operatively connected to another input of said electronic switch whereby said power output of said electronic switch is controlled as a function of the control signal applied to said one input thereof;

i. said light controller including light controlling means for controlling the light transmitted from said first light transmission means to said second light transmission means;

j. said first and second light transmission means are elongated fiber optic elements;

k. said light controller and light transmission means are remotely positioned from said power control device;

l. said light controller means includes first and second polarized elements; and

m. means for rotating said first polarized element with respect to said second polarized element.

3. A power control system comprising:

a. a power control device;

b. first and second light transmission means;

c. a light controller;

d. said power control device including a light generator, a light sensitive device and an electronic switch;

e. the output of said light generator being applied to the input of said light controller by said first light transmission means;

f. the output of said light controller being operatively connected to the input of said light sensitive device by said second light transmission means;

g. the output control signal of said light sensitive device being operatively connected to one input of said electronic switch;

h. a power line operatively connected to another input of said electronic switch whereby said power output of said electronic switch is controlled as a function of the control signal applied to said one input thereof;

i. said light controller including light controlling means for controlling the light transmitted from said first light transmission means to said second light transmission means;

j. said first and second light transmission means are elongated fiber optic elements;

k. said light controller and light transmission means are remotely positioned from said power control device;

l. said light controller means includes a variable opaque light filter; and

m. means for variably positioning said filter to modulate the light transmitted from said first light transmission means to said second light transmission means.

Other info:

Inventors: Callaghan, James M. (Philadelphia, PA, US)

Application Number: 385128
Filing Date: 1973-08-02
Publication_date: 1976-12-21
Assignee:
Primary Class(es): 250/551 250/227.11
Other Classes:
US Patent Ref:

3195405	Jul, 1965	Clark et al.	250/227.
3224279	Dec, 1965	Galli et al.	250/227.
3335367	Aug, 1967	Skooglund et al.	250/227.
3385945	May, 1968	Tums	200/168.
3393800	Jul, 1968	Duran, Jr.	250/227.
3394976	Jul, 1968	Hawkins	250/227.
3407305	Oct, 1968	Sterry	250/225.
3588512	Jun, 1971	Hollien	250/229.
3612882	Oct, 1971	Sheppard	250/227.
3624404	Nov, 1971	Hines	250/227.
3765776	Oct, 1973	Bravenel	250/227.

Other Refs:
Primary Examiner: Smith, Alfred E.
Assistant Examiner:
Attorney: Sciascia; R. S., Curry; Charles D. B.