Electric current measuring tongs with magnetic circuit and pivoting arm
AssigneeUniversal Technic
InventorBernard Landre
Life of this patent
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Abstract
The present invention relates to an electric current measuring tongs with magnetic circuit which opens by a combination of linear and rotary movements, wherein the magnetic circuit accommodated in a housing (12) consists of two elements (1, 2), of which one (2) is mounted pivotably on the housing whereas the other (1) is adapted to be moved in a linear movement relative to the first element so as to permit the pivoting of the element (2) to open the circuit. The facing plane faces (3, 4; 5, 6) of the constituent elements (1, 2) of the magnetic circuit consists of plane oblique sections intended to come into close contact during the closure of the magnetic circuit.
Claims9
Tongs for measuring the electric current flowing in an electric conductor by a magnetic circuit surrounding the conductor and having an electric circuit associated with said magnetic circuit comprising:
- a housing;
- and
- means defining a magnetic circuit including two elements mounted for movement relative to each other, said elements having portions within said housing with an electric winding associated with at least one of said portions and said in-housing portions being provided with confronting complementary oblique faces and said elements having portions projecting out of said housing and provided with confronting complementary oblique faces, said projecting portions being adapted to enclose an electric conductor, said confronting faces being engageable to close said magnetic circuit,
- one of said elements being mounted for translational movement and the other of said elements being mounted for rotational movement to disengage said faces and move said faces of said projecting portions apart for reception therebetween of an electric conductor.
Dependencies are inferred from the claim text.