Invention Grant
US08835782B2 Contact arm assembly for switchgear circuit breaker having improved cooling fins and contact fingers to maximize heat rejection
有权
具有改进的散热片和接触指针的开关柜断路器的接触臂组件，以最大限度地减少排热
- Patent Title: Contact arm assembly for switchgear circuit breaker having improved cooling fins and contact fingers to maximize heat rejection
- Patent Title (中): 具有改进的散热片和接触指针的开关柜断路器的接触臂组件，以最大限度地减少排热
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Application No.: US13615827Application Date: 2012-09-14
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Publication No.: US08835782B2Publication Date: 2014-09-16
- Inventor: Patrick R. Fischer-Carne , Robert S. Karnbach , Rahul Pawar
- Applicant: Patrick R. Fischer-Carne , Robert S. Karnbach , Rahul Pawar
- Applicant Address: CH Zurich
- Assignee: ABB Technology AG
- Current Assignee: ABB Technology AG
- Current Assignee Address: CH Zurich
- Agency: Manelli Selter PLLC
- Agent Edward J. Stemberger
- Main IPC: H01H1/06
- IPC: H01H1/06 ; H01H9/52 ; H01H1/62 ; H01H1/38
Abstract:
A contact arm assembly (10) for a switchgear circuit breaker includes a contact arm (11) having a groove (42) in an outer periphery surface thereof. At least one contact finger (13) has a body (38) and a ball member (40) extending from the body. The ball member is received in the groove so that the contact finger makes contact with the contact arm. The contact arm includes a shaft (14) having a longitudinal axis, first and second ends (18, 28), and a constant outside diameter. A plurality of annular rings (16) extends from the outside diameter of the shaft. The rings are spaced along the longitudinal axis to define cooling fins. Diameters of the rings gradually decrease from the first end to generally the center of the shaft, and then gradually increase to the second end of the shaft.
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