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US 5,534,832 AGranted
Switch
AssigneeTelemecanique
InventorsPierre Duchemin, Gilles Baurand, Dominique Leglaye
Life of this patent
Estimating the term…
Abstract
A switch having at least one power switching pole includes a contact bridge cooperating with fixed contacts and adapted to be maneuvered either by mobile parts of a solenoid or by a tripping mechanism. The contact bridge is rotatable and the mobile parts of the solenoid operate the contact bridge through the intermediary of a transmission mechanism.
Claims21
A switch having at least one power switching pole comprising:
- a contact holder bearing a contact bridge;
- said contact bridge cooperating with fixed contacts and being fastened to a drive crank;
- wherein springs are mounted between said contact bridge and said contact holder to provide the contact pressure for the closing position of contacts and to induce no return force for the opening position of contacts;
- and wherein a transmission mechanism driven from an electromagnet or a tripping mechanism and adapted to operate on said drive crank for causing said contact bridge to move.
1 more element
A switch apparatus comprising:
- a cartridge having an exterior casing, comprising:
- a contact holder mounted within the exterior casing of the cartridge and rotatable therein;
- a contact bridge housed within said contact holder for forming a switch having two ends being rotatable about a central axis within the contact holder;
- and
- a spring mounted between said contact holder and said contact bridge for applying a spring force against the contact bridge and limiting the rotation of the contact bridge within the rotating contact holder;
- an electromagnet comprising:
- a coil connectable to an external electrical supply for creating variable magnetic fields in response to said external electrical supply;
- a fixed magnetic circuit forming a magnetic field in the direction of said variable magnetic fields created by the coil;
- and
- a mobile magnetic circuit being movable in relation to the coil and the fixed magnetic circuit;
- contacts extendable into said cartridge and positioned adjacent said ends of said contact bridge, said contact bridge having an open position when said ends are not in contact with said contacts, and having a closed position completing an electrical connection when said contact bridge rotates about said axis and said ends contact said contacts;
- a tripping mechanism able to operate independently of the mobile magnetic circuit on the opening contact bridge;
- a linkage means for linking the mobile magnetic circuit to said contact holder and for linking the tripping mechanism to said contact holder;
- and
- wherein, said contact bridge is switched between said open and said closed positions when said linkage means rotates said contact holder based on a movement of said mobile magnetic circuit causing the contact bridge to rotate with the contact holder to switch between on and off positions, and said contact bridge rotating with respect to the contact holder when the contact bridge is forced against the springs toward said on position and when the contact bridge is driven with the help of the springs toward said off position.
12 more elements
Dependencies are inferred from the claim text.