Abstract A circuit breaker having a switch mechanism consisting basically of a pivotally mounted latch which is releasably mounted on a release member and which carries a pivotally mounted contact, and of a pivotally mounted manually operable element for operating the circuit breaker. A spring is connected to the manually operable element at a position offset with respect to the pivotal axis of the element and is arranged to apply a force to the pivotable latch at a position close to the pivotal axis of the latch. A latch lever interconnects the manually operable element and the pivotable latch and is connected to the manually operable element eccentrically with respect to the pivotal axis of the latter and is connected to the pivotable latch in a manner as to form the pivotal axis of the latter. A guide is arranged to guide the movement of the latch lever caused by operation of the manually operable element, and the spring is arranged to apply a force to the pivotable latch indirectly by engaging with the pivotally mounted contact carried by the latch.
In a circuit breaker having a switch locking mechanism including a pivotable latch releasably mounted on a release member and which supports a pivotally mounted contact; a pivotally mounted manually operable element for operating the circuit breaker; and a spring connected with said manually operable element at a position offset with respect to the pivotal axis of the element and adapted to exert a force on said pivotable latch at a position proximate the pivotal axis of the latch, the improvement comprising: a latching lever interconnecting the manually operable element and the pivotable latch, said lever being eccentrically connected with the manually operable element with respect to the pivotal axis of said element and being connected to said pivotable latch so as to form the pivotal axis of the latch; a guide for guiding the movement of said latch lever responsive to operation of the manually operable element, said spring indirectly applying a force to said pivotable latch by engaging with said pivotally mounted contact supported by the latch.
Claim 2
Dependent Claim
169 words
In a circuit breaker having a switch locking mechanism including a pivotable latch releasably mounted on a release member and which supports a pivotally mounted contact; a pivotally mounted manually operable element for operating the circuit breaker; and a spring connected with said manually operable element at a position offset with respect to the pivotal axis of the element and adapted to exert a force on said pivotable latch at a position proximate the pivotal axis of the latch, the improvement comprising: a latching lever interconnecting the manually operable element and the pivotable latch, said lever being eccentrically connected with the manually operable element with respect to the pivotal axis of said element and being connected to said pivotable latch so as to form the pivotal axis of the latch; a guide for guiding the movement of said latch lever responsive to operation of the manually operable element, said spring indirectly applying a force to said pivotable latch by engaging with said pivotally mounted contact supported by the latch.
Claim 3
Dependent Claim
68 words
A circuit breaker as claimed in claim 1, wherein said spring is a tension spring and engages the pivotally mounted contact intermediate its pivotal axis and the pivotal axis of the latch formed by said lever; and a fixed contact element of the circuit breaker being associated with a contact element of the pivotally mounted contact on the side of the latch remote from the manually operable element.
Claim 4
Dependent Claim
73 words
A circuit breaker as claimed in claim 2, wherein the manually operable element comprises a guide engageable with said spring so as to, in a trip-free release position of the circuit breaker responsive to release of the pivotable latch by the release member, raises the imaginary center line of the spring substantially in conformance with a line connecting the latching lever to the latch and the pivotal axis of the manually operable element.
Claim 5
Dependent Claim
19 words
A circuit breaker as claimed in claim 1, wherein the manually operable element is constructed in a roller shape.
Claim 6
Dependent Claim
18 words
A circuit breaker as claimed in claim 1, wherein the pivotable latch is positioned on a magnetic rail.