Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent
1976-06-22
1978-10-31
Tudor, Harold
Electricity: circuit makers and breakers
Liquid contact
Time delay
200257, 200260, H01H 300
Patent
active
041236386
ABSTRACT:
A high speed switching device constructed in such a way that the casing is formed with a hollow chamber in its inside of the partition wall for separating the poles, and a runner is slidably provided in the hollow chamber, and the runner is made to operate by a lever and plate springs, and the runner is provided with two pieces of projecting elements, and the plate spring is sandwiched, and two pieces of engaging members are provided at a predetermined interval to make the lever engageable, and the plate spring is made to have length sufficient to curve in bow shape with a predetermined degree of arc circle and its both ends are fixed and installed on the upper wall and bottom wall of the hollow chamber by means of the pressure spring, and the runner is shifted in such a way that the lever is engaged with one engaging member and the plate spring is extended in straight condition and exceeds the opposite side slightly from the straight condition and exceeds the opposite side slightly from the straight condition, and when the plate spring exceeds the straight condition instantly, the plate spring is shifted to the other end side instantly by the resilient force of the plate spring, and the runner is integrally fixed to the movable shaft, and is extended to the pole chamber and the opening side of the movable contact is fixed and the movable contact is tapered, and the stationary contact is shaped in open form with an angle corresponding to the movable contact.
REFERENCES:
patent: 320017 (1885-06-01), Thomson
patent: 1787291 (1930-12-01), Thumin
patent: 3260805 (1966-07-01), Pihl
patent: 3763341 (1973-10-01), Wills
Philpitt Fred
Tudor Harold
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