Light assembly and flasher circuit
First Claim
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1. A railroad crossing signal device comprising:
- a. a T-shaped structure (15) with arm ends and lamp housing means at said ends, a center pole with a circuit housing, a battery charger and a battery compartment (19) thereat;
b. first and second bulb holders (25) in said lamp housing means, a shield (35) between said bulb holders, and an aperture (37) in said shield so that if one bulb is extinguished the remaining bulb will still provide a signal;
c. pairs of pig-tail lines leading from said circuit housing for connection to rails including a pair of lead and a pair of lag lines;
d. a filter circuit (45) including a battery coupling connected to said pig-tail lines;
e. a logic circuit (47) coupled to said filter circuit (45) including logic means to ascertain the presence and direction of a train in the lead and lag directions, said logic circuit having output side (73); and
,f. a timer circuit coupled between said logic circuit and said bulbs including an enabling relay, said timer circuit providing a blinking signal to said bulbs.
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Abstract
Generally speaking the present invention contemplates a kit-type railroad crossing signal device having four red, double lens lights attached to prewired arms, a module for flasher control, a battery box, an automatic controlled battery charger, switching control and, a metal conduit and clamps. A standard railroad signal bell can also be supplied.
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Citations
3 Claims
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1. A railroad crossing signal device comprising:
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a. a T-shaped structure (15) with arm ends and lamp housing means at said ends, a center pole with a circuit housing, a battery charger and a battery compartment (19) thereat; b. first and second bulb holders (25) in said lamp housing means, a shield (35) between said bulb holders, and an aperture (37) in said shield so that if one bulb is extinguished the remaining bulb will still provide a signal; c. pairs of pig-tail lines leading from said circuit housing for connection to rails including a pair of lead and a pair of lag lines; d. a filter circuit (45) including a battery coupling connected to said pig-tail lines; e. a logic circuit (47) coupled to said filter circuit (45) including logic means to ascertain the presence and direction of a train in the lead and lag directions, said logic circuit having output side (73); and
,f. a timer circuit coupled between said logic circuit and said bulbs including an enabling relay, said timer circuit providing a blinking signal to said bulbs. - View Dependent Claims (2, 3)
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Specification
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Current AssigneePreston H. Gibson
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Original AssigneePreston H. Gibson
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InventorsGibson, Preston H.
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Primary Examiner(s)Blix, Trygve M.
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Assistant Examiner(s)Eisenzopf, Reinhard J.
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Application NumberUS05/809,115Time in Patent Office426 DaysField of Search246/125, 246/111, 246/260, 246/292, 246/293, 246/294, 246/473 R, 246/483 A, 246/477, 246/479, 246/483, 246/484, 246/485, 40/132 R, 40/52, 340/47, 340/49, 340/121, 340/41 A, 350/97, 350/99, 350/105, 350/103, 362/235, 362/317US Class Current246/125CPC Class CodesB61L 29/286 using conductor circuits co...Y10S 116/36 Illuminated dial and pointerY10S 136/291 ApplicationsY10S 40/902 Circuit control, e.g. flash...
