Safety switch with overload protection circuit

Patent 5694106 Issued on December 2, 1997. Estimated Expiration Date:

December 16, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Miniaturized thermal contact breaker for printed circuit board
Patent #: 4868535
Issued on: 09/19/1989
Inventor: Janniere , et al.

Circuit breaker rocker actuator switch
Patent #: 5223813
Issued on: 06/29/1993
Inventor: Cambreleng, et al.

Fuseless breaking switch
Patent #: 5262748
Issued on: 11/16/1993
Inventor: Tsung-Mou

Overcurrent breaker switch
Patent #: 5453725
Issued on: 09/26/1995
Inventor: You, et al.

Receptacle with lamp switch and breaker means
Patent #: 5526225
Issued on: 06/11/1996
Inventor: Wang

Fuseless breaking switch
Patent #: 5539371
Issued on: 07/23/1996
Inventor: Yu

Switch having a circuit breaker Patent #: 5541569
Issued on: 07/30/1996
Inventor: Jang

Inventor

Wang, Ming Shan

Application

No. 766044 filed on 12/16/1996

US Classes:

337/79, With signal or indicating means337/53, Snap-action337/59, Toggle337/68, With direct contact separating means (e.g., plunger camming means)337/72With reclosing or reset means

Examiners

Primary: Picard, Leo P.
Assistant: Ryan, Stephen T.

Attorney, Agent or Firm

Rosenberg; Morton J., Klein; David I.

International Classes

H01H 071/04
H01H 071/16

Abstract

An improved safety switch with overload protection circuit includes a housing having a lamp cover and three connecting plates disposed in a receptacle. One connecting plate is provided with a bi-metal plate having a platinum contact, and one is provided with a platinum contact corresponding to the bi-metal plate. When power is overload, the bi-metal plate will trip off so that an electrically insulating baffling plate may slip in between the platinum contacts to cut off power supply. The lamp cover is provided with a control hook which may control the bi-metal plate. The lamp cover further has a leg extending into an elongated notch of the baffling plate. By pressing the lamp cover, displacement of the bi-metal plate and the baffling plate may be controlled to achieve electrical connection or disconnection.