US 4,086,645 A · Repulsion coil actuator for high speed high power circuits

Abstract

A pair of pancake-like coils have a coil axis substantially colinear with one coil mounted to a framework and the other coil mounted on a movable member. The coils are wound such that when electrically energized simultaneously the resulting magnetic fields are in opposition, thereby producing a repelling force therebetween. A spring is disposed between the framework and the movable member to urge the movable member in a sense opposite to the repelling force. A power supply is connected to the coil pair providing for a high initial energy transfer and a lower sustaining energy transfer. A shock absorber is mounted on the framework to arrest the moving member which is set in motion by the repelling force. An armature is attached to the moving member which enters the field of a holding coil as the moving member is displaced by the repelling force. When the holding coil is energized with the armature situated therein, the moving member is held against the spring force.

Claims13

Dependent claims

A repulsion coil actuator providing a force for imparting rapid movement to high voltage electrical contacts, comprising

a framework,
a first coil mounted on said framework having a first coil axis,
a shaft being substantially in alignment with and disposed for linear motion along said first coil axis,
a second coil mounted on said shaft having a second coil axis substantially in alignment with said first coil axis,
A spring producing a spring force yieldably urging said first and second coils together,
said first and second coils providing a repelling force therebetween when simultaneously electrically energized, said repelling force being greater than said spring force,
a holding coil mounted on said framework, an armature mounted on said shaft disposed to move into and out of said holding coil,
a first electrical contact on said framework, a second electrical contact on said shaft urged toward electrical engagement with said first electrical contact by said spring force,
whereby said first and second electrical contacts are moved apart by said repelling force when said first and second coils are electrically energized and said electrical contacts are held apart when said armature moves into said holding coil and said holding coil is electrically energized.

6 more elements

Apparatus for rapid separation of high voltage contacts, comprising

a framework,
a first repulsion coil mounted on said framework,
a second repulsion coil,
said first and second repulsion coils having substantially colinear axes and producing a repulsion force therebetween when electrically energized,
a moving member attached to said second repulsion coil and disposed for linear motion in the direction of said colinear axes, a static electrical contact on said framework,
a moving electrical contact on said moving member disposed to contact said static electrical contact in the absence of said repulsion force,
a two stage power supply providing a high initial energy transfer rate and a lower sustaining energy transfer rate, said first and second repulsion coils being connected to said two stage power supply,
whereby said static and moving contacts are quickly separated by transfer of said high initial energy to said first and second repulsion coils and moved apart a predetermined distance by transfer of said lower sustaining energy to said first and second repulsion coils.

5 more elements

Dependencies are inferred from the claim text.

Repulsion coil actuator for high speed high power circuits

Life of this patent

Repulsion coil actuator for high speed high power circuits

Life of this patent

Abstract

Claims13