Circuit breaker having a floating moveable contact

Patent metadata

Field	Value
Publication number	US-10236149-B2
Application number	US-201414888943-A
Country	US
Kind code	B2
Filing date	Nov 5, 2014
Priority date	Nov 5, 2014
Publication date	Mar 19, 2019
Grant date	Mar 19, 2019

Abstract

A circuit breaker includes a housing, a fixed contact mounted in the housing, a pivot member arranged in the housing, and a pivoting arm moveably mounted in the housing. The pivoting arm includes a moveable contact. The pivoting arm is rotatable about and translatable relative to the pivot member to selectively engage and disengage the fixed and moveable contacts.

First claim

What is claimed is:

1. A circuit breaker comprising:
a housing;
a fixed contact mounted in the housing;
a pivoting contact arm comprising a body mounted in the housing having a first end and an opposing second end, and a biasing member contact surface, the pivoting contact arm supporting a moveable contact at the first end, and selectively rotatable to engage and disengage the fixed and movable contacts, the pivoting contact arm body defining a slot formed therein between the first and second ends, the slot defining a first closed end section and an opposing second open end section;
a pivot member disposed in the slot, wherein the pivoting contact arm is rotatable about and translatable relative to the pivot member; and
a spring having a first leg mounted to the housing and a second leg abutting the biasing member contact surface of the pivoting contact arm.

2. The circuit breaker according to claim 1 , wherein the pivot member is spaced from the first closed end section when the fixed and moveable contacts are disengaged.

3. The circuit breaker according to claim 1 , wherein the pivoting contact arm includes a trip member arranged at the second end, the trip member extending substantially perpendicularly outwardly of the pivoting contact arm along an axis parallel to a rotational axis defined by the pivot member.

4. The circuit breaker according to claim 1 , wherein the biasing member contact surface is substantially adjacent to the slot.

5. The circuit breaker according to claim 1 , wherein the housing includes a fulcrum member, the spring extending about the fulcrum member.

6. The circuit breaker according to claim 1 , wherein the pivoting contact arm includes a de-activation surface formed opposite the biasing member contact surface and a manual activation/de-activation element provided at the second end.

7. The circuit breaker according to claim 6 , wherein the de-activation surface defines a recess formed in an outer edge of the pivoting contact arm, the recess extending toward the slot.

Assignees

• Abb Schweiz Ag

Inventors

• Coles Derry Robert
• Cejudo Benito Pablo
• Sosa Rincon Jaime

Classifications

• H01H71/526

  the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure · CPC title

• H01H71/2463

  with plunger type armatures · CPC title

• H01H1/221 Primary

  and a contact pressure spring acting between the pivoted member and a supporting member · CPC title

• H01H71/0207 Primary

  Mounting or assembling the different parts of the circuit breaker · CPC title

• H01H2205/002

  fixed to operating part · CPC title