Electricity: electrothermally or thermally actuated switches – Electrothermally actuated switches – Fusible element actuated
Patent
1976-02-24
1981-05-19
Hickey, Robert J.
Electricity: electrothermally or thermally actuated switches
Electrothermally actuated switches
Fusible element actuated
200144R, 200149R, 337169, 337186, H01H 7120, H01H 8520
Patent
active
042688116
ABSTRACT:
A circuit interrupting device is disclosed. A stationary contact is mounted within a stationary hollow insulator and connected to one side of an electrical circuit. A movable contact normally engages the stationary contact and is mounted for movement within the stationary hollow insulator. The movable contact is connected by a contact rod that extends through an opening in the insulator to a set of spring detent fingers. The spring detent fingers electrically and mechanically engage the end of a movable conductive element, such as a power fuse or disconnect switchblade, which is connected to the other side of the electrical circuit. A spring biases the movable contact toward engagement with the stationary contact. When the movable conductive element is moved away from the device, the spring detent fingers grip the element and cause the movable contact to move to disengage the stationary contact. The resultant arc is quickly extinguished by an arc extinguishing liner and trailer thereby interrupting current flow. The movable contact continues to move away from the stationary contact until the movable contact engages a limit stop within the hollow insulator. At this time, the spring detent fingers disengage the movable conductive element creating an air gap, and the spring returns the movable contact to engagement with the stationary contact. However, since the movable conductive element is now disengaged, current flow remains interrupted. A latch arrangement may be provided to latch the conductive element to the device to prevent accidental opening until the latch is manipulated by an operator.
REFERENCES:
patent: 2223731 (1940-12-01), Lingal
patent: 2262386 (1941-11-01), Crabbs
patent: 2308026 (1943-01-01), Rawlins
patent: 2317118 (1943-04-01), Schultz et al.
patent: 2337889 (1943-12-01), Harlow et al.
patent: 2469203 (1949-05-01), Palme et al.
patent: 2480622 (1949-08-01), Warnock
patent: 2716681 (1955-08-01), Smith, Jr.
patent: 2744179 (1956-05-01), Schneider
patent: 2835768 (1958-05-01), Mittelstadt
patent: 2951924 (1960-09-01), Schultz
patent: 3005891 (1961-10-01), Charewicz et al.
patent: 3258568 (1966-06-01), Patterson et al.
patent: 3316372 (1967-04-01), Bridges
Evans David M.
Rogers Edward J.
Hickey Robert J.
Kaufmann John D.
S&C Electric Company
LandOfFree
Circuit interrupting device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Circuit interrupting device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit interrupting device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1492389