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Electrical jack-plug

Image Number 2 for United States Patent #4705485.

An electrical jack-type connector, mainly for low voltage purposes, having a rod-shaped male part having terminals in the form of conducting, axially displaced contact rings, and a matching tubular female part having axially and peripherially displaced inner terminals to make contact with the contact rings of the male part, with the female part having an outer tube and an inner tube fitted therein, which inner tube is formed with rectangular slots for arrangement of the terminals of the female part, in each slot there being a flat substantially rectangular contact flap connected with a respective conductor located between the inner tube and outer tube in a narrow track extending on the tube wall parallel to the tube axis from the slot to an orifice at one end of the inner tube for connection with cable conductors within a closed end. The contact flaps are strip-formed rectangular pieces extending beyond the length of the slots so as to be forced to assume a curvature upon insertion of the inner tube into the outer tube.

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