Patent ID: 7977592
Filing Date: 2011-07-12
Classification: H01H

Abstract:
1. A mechanism for rotary double-break contact system for a circuit breaker, comprising: (a) a crossbar module, wherein said crossbar module has a protrusion integral with a side of the crossbar module, the protrusion including a first anchor area and a second anchor area, wherein the protrusion is terminated by a first limiting surface and a second limiting surface, a surface, connecting protrusions and a first sliding pin stop area and a second sliding pin stop area, the crossbar module further has a first sliding pin travel surface and a second sliding pin travel surface, a first contact arm resting surface and a second contact arm resting surface; (b) a contact arm, wherein said contact arm has a first movable contact and a second movable contact, a first structural stop and a second structural stop, a first outer traveling edge and a second outer traveling edge, and a contact arm slotted opening; (c) an axel, wherein said axel passes through said contact arm slotted opening and said axel is secured to said crossbar, and said axel allows the pivoting of said contact arm about said axel; (d) a first spring, wherein one end of said first spring is secured to a first fixed pin and the other end of said first spring is secured to a first sliding pin, and wherein said first pin is secured to said first anchor area on said crossbar module and said first sliding pin is held in place by said first structural stop in said contact arm; (e) a second spring, wherein one end of said second spring is secured to a second fixed pin and the other end of said second spring is secured to a second sliding pin, and wherein said second phi is secured to said second anchor area on said crossbar module and said second sliding pin is held in place by said second structural stop in said contact arm; and (f) wherein in an ON position said contact arm rests at said first contact arm resting area and said second contact arm resting area, and wherein in a blow-off position said first sliding pin and said second sliding pin engages said first structural stop and said second structural stop of said contact arm and moves said contact arm towards said first limiting surface and said second limiting surface, and thereby forms said mechanism for rotary double-break contact system for a circuit breaker.