Electricity: electrothermally or thermally actuated switches – Electrothermally actuated switches – Fusible element actuated
Patent
1979-04-04
1981-02-24
Beha, Jr., William H.
Electricity: electrothermally or thermally actuated switches
Electrothermally actuated switches
Fusible element actuated
200148A, 337275, H01H 8538
Patent
active
042530814
ABSTRACT:
Disclosed is a mechanism for preventing the operation of a circuit interrupting device during the occurrence of excessive overcurrent. The circuit interrupting device includes an insulative housing having circuit-connectable opposed terminals thereon. Included within the housing is an arcing rod which is electrically connected to one terminal and which, in response to an overcurrent, moves away from a stationary contact electrically connected to the other terminal. Arcing rod movement elongates an arc formed between the arcing rod and the contact in an arc extinguishing environment to extinguish the arc and interrupt the circuit. The mechanism of the invention includes a shoulder on the arcing rod and one or more magnetic yokes positioned adjacent, but normally out of contact with, the shoulder. When an overcurrent through the device occurs which exceeds the device's rating, flux generated by current flow through the arcing rod moves the yoke to engage the shoulder thus preventing arcing rod movement. The yoke may be normally biased away from the shoulder by one or more springs.
REFERENCES:
patent: 1889213 (1932-11-01), Nordhem
patent: 4030055 (1977-06-01), Kotos
patent: 4053727 (1977-10-01), Kriechbaum
patent: 4193053 (1980-03-01), Biller et al.
Beha Jr. William H.
Kaufmann John D.
S & C Electric Company
LandOfFree
Excessive overcurrent disabling mechanism for a circuit interrup does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Excessive overcurrent disabling mechanism for a circuit interrup, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Excessive overcurrent disabling mechanism for a circuit interrup will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1411944