Patent ID: 9627160
Date: 2017-04-18
CPC Classifications: H01H

Claim:
1. A circuit breaker, comprising: a trip unit including an internal support, the internal support including a first opening to receive a first rotary knob having one or more first smooth rings and a second opening to receive a second rotary knob having one or more second smooth rings; a first knob control of the first rotary knob, the first knob control including a first structural support, a first housing and a first spring installed in the first housing against the first structural support to apply a force onto the first housing such that the first housing presses directly against the one or more first smooth rings of the first rotary knob; and a second knob control of the second rotary knob, the second knob control including a second structural support, a second housing and a second spring installed in the second housing against the second structural support to apply a force onto the second housing such that the second housing presses directly against the one or more second smooth rings of the second rotary knob.