Abstract: A hair straightening apparatus has two arms pivotably coupled at a hinge, and a central pack disposed between the first and second arms and coupled with the hair styling apparatus at the hinge on a hinge end of hair straightening apparatus. A locking mechanism is disposed within the central pack, wherein the locking mechanism includes a symmetrical, elongate lock arm disposed lengthwise within the central pack. The locking mechanism is selectively operable to lock the first and second arms in the closed position. The central pack defines a longitudinal axis, and the elongate lock arm is movable relative to the central pack between the first and second positions in parallel with the longitudinal axis defined by the central pack.

Abstract: The present invention relates to a hair straightening apparatus having two arms pivotably coupled together and a heating plate on a facing side of at least one arm. A central pack disposed between the first arm and the second arm and coupled to the hair styling apparatus at the hinge end and a biasing means adapted to support the central pack symmetrically between the first arm and the second arm.

Abstract: A heating circuit has at least three series-connected resistance-heating elements, each resistance-heating element being connected between a pair of nodes, each pair of adjacent resistance-heating elements in the series being connected via one of the nodes, each node being connectable to a voltage. Optionally, the heating circuit may have one or more switching elements to allow selective connection of one or more voltages to the resistance heating elements.

Abstract: The present invention relates to a hair straightening apparatus having two arms pivotably coupled together and a heating plate on a facing side of at least one arm. A central pack disposed between the first arm and the second arm and coupled to the hair styling apparatus at the hinge end and a biasing means adapted to support the central pack symmetrically between the first arm and the second arm.

Abstract: The present invention relates to a hair straightening apparatus having two arms pivotably coupled together and a heating plate on a facing side of at least one arm. A flexible protective rim substantially surrounds the periphery of a hair contacting surface of each heating plate.