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US Patent 5021761 - High-amp circuit breaker and a bistable element therefor
US Patent Issued on June 4, 1991
Estimated Patent Expiration Date:
September 28, 2009Estimated 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.
Estimated Patent Expiration Date:
September 28, 2009Estimated 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.AbstractA low voltage high-amp circuit breaker having a substantially rectangular bimetallic bistable element and a pair of terminals extending from the side thereof. The bistable element is attached to have one end move from a first normal electrically conductive position to a second non-electrically conductive position. The manual reset circuit breaker includes a manual reset lever and a non-conductive heat resistant extension blade connected to the reset lever via a rotatable shaft. The extension blade being positioned adjacent the moveable end of the bistable element and when the element is moved to its second position, the blade is moved to prevent the element from returning to its first conductive position until the circuit breaker is manually reset. | InventorsAssigneeApplicationNo. 414095 filed on 09/28/1989US Classes:337/68, With direct contact separating means (e.g., plunger camming means)337/91, With reset means337/365Snap-actionField of Search337/68, With direct contact separating means (e.g., plunger camming means)337/91, With reset means337/111, Bimetallic structure or composition of material337/379, Bimetallic element structure or composition of material337/365, Snap-action337/89Snap-actionExaminersPrimary: Broome, H.Attorney, Agent or FirmUS Patent References2720416, 4803455, Automatic and manually resettable miniaturized circuit breakerIssued on: 02/07/1989 Inventor: Kuczynski4814739Combination push/pull electric switch and circuit breaker Issued on: 03/21/1989 Inventor: Moldovan International ClassH01H 071/16 |
