# US 9,040,863 B1 · Air circuit breaker

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- Number: US 9,040,863 B1
- Document ID: US9040863B1
- Status: Granted
- Kind: B1
- Application number: 14/353,068
- Filed: 2012-12-21
- Published: 2015-05-28
- Granted: 2015-05-26
- Earliest claimed: 2012-12-21
- Assignees: Hyundai Heavy Industries Co., Ltd.
- Applicants: Hyundai Heavy Industries Co., Ltd.
- Inventors: Jae Goo Lyu
- Web page: https://patentgrep.com/patent/US9040863B1

## CPC

- H01H 33/20: using arcing horns (using blow-out magnet H01H33/18)
- H01H 9/38: Auxiliary contacts on to which the arc is transferred from the main contacts (using arcing-horns H01H9/46)
- H01H 9/46: using arcing horns (using blow-out magnet H01H9/44)
- H01H 11/00: Apparatus or processes specially adapted for the manufacture of electric switches (processes specially adapted for manufacture of rectilinearly movable switches having a plurality of operating members associated with different sets of contacts, e.g. keyboards, H01H13/88)
- H01H 73/18: Means for extinguishing or suppressing arc {(magnet coil acting as blow-out device H01H71/38)}
- H01H: ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES (contact cables H01B7/10; electrolytic self-interrupters H01G9/18; emergency protective circuit arrangements H02H; switching by electronic means without contact-making H03K17/00)

## Abstract

An arc guider configured to provide an arc movement path, one side thereof forming a fixation projection and a center thereof forming a groove in a longitudinal direction, a fixation element sequentially including a main contact, an arc contact being spaced apart from the main contact and an insertion groove accommodating the arc guider and a plurality of projection fixing units being formed on both sides of the insertion groove and being curved toward the accommodated arc guider through an outer force so that the fixation projection does not escape wherein triangle V shaped groove marks by the outer force are formed in the plurality of the projection fixing units.

## Claims

### Claim 1

An air circuit breaker comprising:
an arc guider configured to provide an arc movement path, one side thereof forming a fixation projection and a center thereof forming a groove in a longitudinal direction;
a fixation element sequentially including a main contact, an arc contact being spaced apart from the main contact and an insertion groove accommodating the arc guider; and
a plurality of projection fixing units being formed on both sides of the insertion groove and being curved toward the accommodated arc guider through an outer force so that the fixation projection does not escape wherein triangle V shaped groove marks by the outer force are formed in the plurality of the projection fixing units.

### Claim 2 (depends on 1)

The air circuit breaker of claim 1, wherein one of the triangle V shaped groove marks is formed on a projection fixing unit being far from the arc contact below a groove of the arc guider and other triangle V shaped groove marks are formed on a projection fixing unit being close to the arc contact.

### Claim 3 (depends on 1)

The air circuit breaker of claim 1, wherein the plurality of the projection fixing units is formed by caulking the arc contact.

### Claim 4 (depends on 3)

The air circuit breaker of claim 3, wherein the plurality of the projection fixing units corresponds to a projecting part interlocking with the fixation projection.

### Claim 5 (depends on 1)

The air circuit breaker of in claim 1, wherein a through hole is formed on one side of the arc guider.