Bi-directional tamper resistant temperature dial

Details Bi-directional tamper resistant temperature dial Bi-directional tamper resistant temperature dial

2006-12-19

2006-12-19

Paschall, Mark (Department: 3742)

Electric heating

Heating devices

With power supply and voltage or current regulation or...

C219S507000, C219S494000, C074S553000, C292S347000

Reexamination Certificate

active

07151240

ABSTRACT:
A bi-directional tamper resistant temperature adjustment controller interface comprises a control dial having an interior face wherein a cylindrical center boss extends therefrom, said cylindrical center boss having a substantially annular cross section, and a central axial bore adapted to receive a rotatable control member and an exterior side wall of the boss has formed therein a first and a second ring of inline recessed notches adapted for resistively engaging a deflecting member. In one embodiment of the invention the first and second ring of inline recessed notches are a first and second ring of directional serrations wherein the first ring of serrations are angularly directed in a first direction to resist rotation of the dial in one direction of rotation and the second ring of serrations are angularly directed in a second direction to resist rotation of the dial in an opposing direction of rotation.

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