Two piece trip lever to open and close contacts remotely

Patent metadata

Field	Value
Publication number	US-11842873-B2
Application number	US-202117353895-A
Country	US
Kind code	B2
Filing date	Jun 22, 2021
Priority date	Jun 22, 2021
Publication date	Dec 12, 2023
Grant date	Dec 12, 2023

Abstract

A modified trip lever for a remote controlled miniature circuit breaker comprises a trip lever and a separate kicker lever, which perform alternate functions to either automatically open the main contacts in response to a trip event or alternately open or close the contacts under remote control. The kicker lever rotates clockwise on a pivot in response to an actuator receiving a remote control open signal, to open the contacts by forcing a transverse tab on the kicker lever against a blade carrying a moveable main contact aligned with a stationary main contact. The kicker lever rotates counterclockwise to close the contacts in response to the actuator receiving a remote control close signal. The trip lever mounted on the same pivot, is configured to automatically open the contacts in response to a trip event, by pushing against the back side of the tab of the kicker lever.

First claim

What is claimed is:

1. A modified trip lever for a remote controlled miniature circuit breaker, comprising:
a kicker lever configured to be pivotally mounted on a pivot in a housing of a miniature circuit breaker, having a first end and a second end on opposite sides of the pivot mounting of the kicker lever, with a transverse tab on the first end thereof configured to push a pivoted blade having a moveable main electrical contact that is aligned with a stationary main electrical contact mounted in the housing, to separate the moveable main contact from the stationary main contact, in response to an external control signal to open the main contacts; and
a trip lever configured to be pivotally mounted on the same pivot as the kicker lever, configured to push against the transverse tab of the kicker lever to cause the transverse tab to move in concert with the trip lever to push the pivoted blade, to separate the moveable main contact from the stationary main contact, in response to a detection of a trip event by the miniature circuit breaker.

2. The modified trip lever for a remote controlled miniature circuit breaker of claim 1 , further comprising:
the blade being spring biased by a toggle spring to pivot from an open position for the main contacts to a closed position for the main contacts.

3. The modified trip lever for a remote controlled miniature circuit breaker of claim 2 , further comprising:
the kicker lever being configured to rotate counterclockwise about its pivot when the main contacts are in the open position, so that the transverse tab of the kicker lever relieves pressure on the blade, and the blade is thereby forced by the toggle spring bias to the closed position for the main contacts.

4. The modified trip lever for a remote controlled miniature circuit breaker of claim 3 , further comprising:
a slider plate slideably mounted in the housing, having an end surface configured to push against the second end of the kicker lever to open the main contacts when the slider plate moves in transitioning from the closed position to the open position, thereby causing the end surface of the slider plate to push the kicker lever to pivotally rotate clockwise about its pivotal mounting, to thereby push the first end transverse tab of the kicker lever against the blade to push the blade against the toggle spring bias, thereby moving the main contacts from the closed position to the open position.

5. The modified trip lever for a remote controlled miniature circuit breaker of claim 4 further comprising:
the slider plate further configured to close the main contacts in transitioning from the open position to the closed position, by moving to relieve pressure on the second end of the kicker lever, thereby rotating the kicker lever counterclockwise about its pivot, the surface of the kicker lever thereby relieving pressure on the blade, the blade thereby forced by the blade spring bias to the closed position for the main contacts.

6. The modified trip lever for a remote controlled miniature circuit breaker of claim 5 further comprising:
an actuator mounted in the housing, configured to cause the slider plate to begin moving the end surface of the slider plate away from the second end of the kicker lever, thereby relieving pressure on the second end of the kicker lever, which thereby rotates counterclockwise about its pivot so that the surface of the kicker lever relieves pressure on the blade, and the blade is forced by the toggle spring bias to the closed position for the main contacts.

7. The modified trip lever for a remote controlled miniature circuit breaker of claim 6 , further comprising:
the slider plate slideably mounted in the miniature circuit breaker, having an end surface configured to push against a second end of the kicker lever opposite to the first end, to open the main contacts when the slider plate moves in response to the remote control open signal, thereby causing the end surface of the slider plate to push the kicker lever to pivotally rotate clockwise about its pivotal mounting, to thereby push the first end transverse tab of the kicker lever against the blade to push the blade against the toggle spring bias, thereby opening the main contacts.

8. The modified trip lever for a remote controlled miniature circuit breaker of claim 7 further comprising:
the slider plate further configured to close the main contacts in response to the remote control close signal, by moving to relieve pressure on the second end of the kicker lever, thereby rotating the kicker lever counterclockwise about its pivot, the transverse tab of the kicker lever thereby relieving pressure on the blade, the blade thereby forced by the blade spring bias to close the main contacts.

9. A remote controlled miniature circuit breaker comprising the modified trip lever according to claim 1 .

10. A remote controlled miniature circuit breaker comprising the modified trip lever according to claim 2 .

11. A remote controlled miniature circuit breaker comprising the modified trip lever according to claim 3 .

12. A remote controlled miniature circuit breaker comprising the modified trip lever according to claim 4 .

13. A remote controlled miniature circuit breaker comprising the modified trip lever according to claim 5 .

14. A remote controlled miniature circuit breaker comprising the modified trip lever according to claim 6 .

15. A remote controlled miniature circuit breaker comprising the modified trip lever according to claim 7 .

16. A remote controlled miniature circuit breaker comprising the modified trip lever according to claim 8 .

Assignees

• Schneider Electric Usa Inc

Inventors

• Mittelstadt Chad R

Classifications

• H01H71/12 Primary

  Automatic release mechanisms with or without manual release · CPC title

• H01H71/52 Primary

  actuated by lever · CPC title

• H01H71/66 Primary

  Power reset mechanisms · CPC title

• H01H2071/665

  the reset mechanism operating directly on the normal manual operator, e.g. electromagnet pushes manual release lever back into "ON" position · CPC title

• H01H83/20

  operated by excess current as well as by some other abnormal electrical condition · CPC title