Electricity: electrothermally or thermally actuated switches – Electrothermally actuated switches – Fusible element actuated
Patent
1993-09-15
1994-10-11
Donovan, Lincoln
Electricity: electrothermally or thermally actuated switches
Electrothermally actuated switches
Fusible element actuated
337161, H01H 7120
Patent
active
053551109
ABSTRACT:
An electrical interruption device is disclosed in which an overcurrent protective device is provided to interrupt electric current flow on a sustained overcurrent current occurring. The overcurrent protective device is characterized by a plunger which is held in tension against the force of a spring by a low temperature solder, and further in which a sleeve of insulating material, such as silicone, is provided about the plunger. Preferably, the overcurrent protective device includes a housing, with the plunger disposed in the housing and having one end extending therefrom to provide electric communication with the remainder of the electric circuit. The sleeve of insulating material preferably being located about the end of the plunger which extends from the housing. On a predetermined condition causing the solder to melt, the plunger is released and under the force of the spring is moved to a position retracted within the sleeve, interrupting the current flow. Advantageously, the overcurrent protective device may be used together with pulverulent arc quenching material. The sleeve acts to isolate the pulverulent arc quenching material from the plunger and prevent its interference with the plunger as it is moved under the force of the spring.
REFERENCES:
patent: 1001698 (1976-12-01), Howard
patent: 1072156 (1980-02-01), Blewitt
patent: 1084706 (1914-01-01), Murray
patent: 1155154 (1983-10-01), Knapp, Jr.
patent: 1173087 (1984-08-01), Ross
patent: 1189117 (1985-06-01), O'Brien
patent: 1196364 (1985-11-01), Barry et al.
patent: 1196942 (1985-11-01), Jarosy et al.
patent: 1200575 (1986-02-01), Cameron
patent: 1202056 (1986-03-01), Gaia
patent: 1228102 (1987-10-01), Kowalik et al.
patent: 1228885 (1987-11-01), Gaia
patent: 1235172 (1988-04-01), Kowalik et al.
patent: 1250872 (1989-03-01), Krueger
patent: 1251500 (1989-03-01), Cameron
patent: 1290374 (1988-09-01), Thwaites
patent: 1299132 (1919-04-01), Conant
patent: 1422419 (1922-07-01), Conant
patent: 1422420 (1922-07-01), Conant
patent: 1601726 (1926-10-01), Eustice
patent: 1857097 (1932-05-01), Glowacki
patent: 1857098 (1932-05-01), Glowacki
patent: 1919273 (1933-07-01), Conant
patent: 1991876 (1935-02-01), Wood
patent: 2014844 (1990-04-01), Spalding et al.
patent: 2014845 (1990-04-01), Spalding et al.
patent: 2015285 (1990-04-01), Ehlmann et al.
patent: 2017490 (1935-10-01), Glowacki
patent: 2029081 (1990-10-01), Krueger et al.
patent: 2044636 (1991-06-01), Douglass
patent: 2055115 (1936-09-01), Wood
patent: 2079097 (1937-04-01), Wood
patent: 2300620 (1942-11-01), Duerkob
patent: 2321711 (1943-06-01), Taylor
patent: 2400408 (1946-05-01), Haefelinger
patent: 2543245 (1951-02-01), Laing
patent: 2577531 (1951-12-01), Laing
patent: 2613297 (1952-10-01), Laing
patent: 2640128 (1953-05-01), Fahnoe et al.
patent: 2657294 (1953-10-01), Laing
patent: 2658974 (1953-11-01), Kozacka
patent: 2694124 (1954-11-01), Laing et al.
patent: 2703352 (1955-03-01), Kozacka
patent: 2720567 (1955-11-01), Detch
patent: 2734111 (1956-02-01), Kozacka
patent: 2747257 (1956-04-01), Ashcroft et al.
patent: 2809254 (1957-10-01), Edsall
patent: 2816988 (1957-12-01), Sugden
patent: 2826660 (1958-03-01), Kozacka
patent: 2833891 (1958-04-01), Jacobs, Jr.
patent: 2834852 (1958-04-01), Swain et al.
patent: 2913555 (1959-11-01), McAlister
patent: 2982835 (1961-04-01), Kozacka
patent: 3110855 (1963-11-01), Chumakov
patent: 3116389 (1963-12-01), Withers
patent: 3144534 (1964-08-01), Baumbach
patent: 3206579 (1965-09-01), Berthel et al.
patent: 3240905 (1966-03-01), Kozacka
patent: 3287526 (1966-11-01), Brandt
patent: 3291941 (1966-12-01), Salzer
patent: 3319029 (1967-05-01), Jacobs, Jr.
patent: 3374328 (1968-03-01), Cameron
patent: 3417357 (1968-12-01), Withers
patent: 3418614 (1968-12-01), Krueger
patent: 3453580 (1969-07-01), Withers
patent: 3479630 (1969-11-01), Kozacka
patent: 3483501 (1969-12-01), Kozacka
patent: 3491322 (1970-01-01), Kozacka
patent: 3611239 (1971-10-01), Kozacka
patent: 3648210 (1972-03-01), Kozacka
patent: 3649942 (1972-03-01), Plasko
patent: 3681731 (1972-08-01), Kozacka
patent: 3689995 (1972-09-01), Lerstrup
patent: 3697916 (1972-10-01), Belcher et al.
patent: 3701069 (1972-10-01), Belcher
patent: 3721935 (1973-03-01), Kozacka
patent: 3863188 (1975-01-01), Knapp, Jr.
patent: 3876966 (1975-04-01), Fister
patent: 3935553 (1976-01-01), Kozacka et al.
patent: 3938067 (1976-02-01), Fister
patent: 4020441 (1977-04-01), Jacobs, Jr.
patent: 4032877 (1977-06-01), McAlister
patent: 4041435 (1977-08-01), Gaia
patent: 4048610 (1977-09-01), Jacobs, Jr.
patent: 4053860 (1977-10-01), Kozacka et al.
patent: 4053862 (1977-10-01), Csizy et al.
patent: 4055827 (1977-10-01), Knapp, Jr.
patent: 4058786 (1977-11-01), Gaia et al.
patent: 4101860 (1978-07-01), Fister
patent: 4117441 (1978-09-01), Wycklendt
patent: 4118684 (1978-10-01), Mollenhoff
patent: 4146863 (1979-03-01), Mollenhoff
patent: 4184137 (1980-01-01), Gaia et al.
patent: 4204184 (1980-05-01), Csizy et al.
patent: 4210892 (1980-07-01), Salzer
patent: 4216457 (1980-08-01), Panaro
patent: 4219795 (1980-09-01), Panaro et al.
patent: 4227167 (1980-10-01), Kozacka et al.
patent: 4227168 (1980-10-01), Knapp, Jr.
patent: 4308515 (1981-12-01), Rooney et al.
patent: 4315235 (1982-02-01), Jacobs, Jr.
patent: 4321574 (1982-03-01), Pertici
patent: 4331947 (1982-05-01), Noerholm
patent: 4344058 (1982-08-01), Knapp, Jr. et al.
patent: 4349802 (1982-09-01), Gaia
patent: 4357588 (1982-11-01), Leach et al.
patent: 4359708 (1982-11-01), Jarosz et al.
patent: 4367451 (1983-01-01), Panaro
patent: 4414526 (1983-11-01), Panaro
patent: 4417224 (1983-11-01), Ross
patent: 4481495 (1984-11-01), Jarosz et al.
patent: 4488137 (1984-12-01), Rooney et al.
patent: 4503415 (1985-03-01), Rooney et al.
patent: 4511874 (1985-04-01), Rasmussen et al.
patent: 4533895 (1985-08-01), Kowalik et al.
patent: 4562420 (1985-12-01), Kowalik et al.
patent: 4593262 (1986-06-01), Krueger
patent: 4611192 (1986-09-01), Arora
patent: 4625195 (1986-11-01), Robbins
patent: 4636765 (1987-01-01), Krueger
patent: 4651119 (1987-03-01), Belcher et al.
patent: 4654620 (1987-03-01), Rooney et al.
patent: 4782317 (1988-11-01), Thwaites
patent: 4935716 (1990-06-01), Ehlmann
patent: 4972170 (1990-11-01), Ehlmann
patent: 4973932 (1990-11-01), Krueger et al.
patent: 4992770 (1991-02-01), Spalding et al.
patent: 4994779 (1991-02-01), Douglass
patent: 5043689 (1991-08-01), Di Troia et al.
patent: 5055817 (1991-10-01), O'Shields et al.
patent: 5075664 (1991-12-01), Spalding et al.
patent: 5077534 (1991-12-01), Douglass
patent: 5091712 (1992-02-01), Suuronen
patent: 5148140 (1992-09-01), Goldstein
Biasutti Tony
Morgan Peter
Ruggiero Mary A.
Young Brian A.
Donovan Lincoln
Nor-Am Electrical Limited
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