Electricity: electrothermally or thermally actuated switches – Electrothermally actuated switches – Fusible element actuated
Patent
1988-12-09
1990-03-06
Broome, H.
Electricity: electrothermally or thermally actuated switches
Electrothermally actuated switches
Fusible element actuated
337168, 337249, H01H 8520
Patent
active
049069616
ABSTRACT:
A rain shield for a circuit-interrupting device is provided that includes a housing for attachment to the circuit interrupter adjacent an exhaust outlet of the circuit interrupter. The rain shield prevents the ingress of moisture while providing a path for the exhaust gases of the circuit interrupter. The rain shield is selectively attachable to the circuit interrupter and is reusable. In one arrangement, the rain shield includes a housing which is generally cylindrical and has an inlet opening at a first end for cooperation with the exhaust outlet of the circuit interrupter. At a second opposite end of the housing, an outlet is defined that includes a predetermined pattern of openings. A centrally disposed plate is provided adjacent the outlet and functions as a drip cap such that moisture in the form of precipitation that enters the outlet of the rain shield is prevented from entering the inlet opening adjacent the circuit interrupter. When the circuit interrupter is in an inverted position, precipitation that directly enters the openings in the outlet of the rain shield is collected in a reservoir area of the housing. The reservoir in one particular configuration is formed between an inner wall that defines the inlet opening and an outer wall of the housing. Drain holes are provided through the outer wall of the housing that communicate with the reservoir such that water accumulating in the reservoir is drained from the inverted rain shield.
REFERENCES:
patent: 3258568 (1966-06-01), Patterson et al.
patent: 3719912 (1973-03-01), Harner et al.
patent: 3965452 (1976-06-01), Chabala et al.
patent: 4001750 (1977-01-01), Scherer et al.
patent: 4047142 (1977-09-01), Bernatt et al.
patent: 4691083 (1987-09-01), Dienes
Broome H.
Lapacek James V.
S&C Electric Company
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