Switch for very large DC currents

Details Switch for very large DC currents Switch for very large DC currents

1981-10-06

1984-02-28

Cangialosi, Sal

Ordnance

Accelerating

124 3, F41F 102, H02K 4102

Patent

active

044336071

ABSTRACT:
An elongated armature can be moved rectilinearly but is preferably rotated between a first position in which it bridges the gap between two parallel rails to short circuit a very large DC current applied to one end of the rails and a second position where electrical contact with one rail is interrupted. Interruption of the circuit through the armature generates a massive arc which is driven by electromagnetic forces toward the second ends of the rails. Means are also provided for rapidly increasing the voltage across switch terminals to either more rapidly commutate the current into a secondary circuit and/or to more rapidly cause arc extinction. The switch is particularly useful for projectile launcher systems where the armature can be continuously rotated for burst firing. Preferably, the launcher rails are longitudinal extensions of the switch rails so that the arc initially produced by switch opening or armature rotation can be used directly in arc driving of projectiles. Various means are disclosed for providing an initial acceleration to the arc driven projectile to minimize rail damage which would be caused by slowing down of the arc by an initially stationary or slow moving projectile.

REFERENCES:
patent: 1001975 (1911-08-01), Murgas
patent: 1097871 (1914-05-01), Murphy
patent: 1116871 (1914-11-01), Bliss
patent: 2660647 (1953-11-01), Rawlins
patent: 3071666 (1963-01-01), Ellsworth et al.
patent: 3978300 (1974-08-01), Slade
patent: 4052576 (1977-10-01), Smith
patent: 4329971 (1982-05-01), Kemeny et al.
patent: 4347463 (1982-08-01), Kemeny et al.
patent: 4355561 (1982-10-01), Kemeny et al.
patent: 4369692 (1983-01-01), Kemeny
S 2049 0046 IEEE Trans. of Magnetics, vol. Mag-18, No. 1, (1/82), Deis et al., pp. 16-22.
EP-T12 (3/72) Acceleration of Macroparticles and a Hypervelocity Electromagnetic Accelerator, Barber et al., pp. 1-198.

Affiliated with

Also associated with

Rating

Switch for very large DC currents does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Switch for very large DC currents, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Switch for very large DC currents will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-754962