Means for effectively controlling the forces imposed on the...

Details Means for effectively controlling the forces imposed on the... Means for effectively controlling the forces imposed on the...

H - Electricity

01

H

306/215

H01H 33/66 (2006.01)

Patent

CA 1098570

llTRO4249-A MEANS FOR EFFECTIVELY CONTROLLING THE FORCES IMPOSED ON THE MOVABLE CONTACT OF A VACUUM-TYPE CIRCUIT INTERRUPTER Abstract: This vacuum-type circuit breaker has means for substantially reducing the tendency of the contacts to bounce apart in response to the impact between the contacts occurring at the end of a closing stroke. The circuit breaker includes a contact-wipe mechanism comprising a driving part and a wipe spring located between the driving part and the movable contact which spring is loaded to produce added closing force on the movable contact by continuing closing motion of the driving part after the contacts initially engage at the end of the closing stroke. The wipe mechanism further includes a bounce-suppressing spring acting in opposition to the wipe spring and discharging to aid said continuing closing motion of said driving part during the initial stages of said continuing motion following initial contact-engagement. The wipe mechanism also includes means for precisely controlling the forces imposed on the movable contact by acceleration at the start and termination of a contact-opening stroke.

352653

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