Abstract:
An improved combination wire installation and cutting tool for installing the ends of telephone circuit conductors into known quick clip connectors, following which the stubs on the free ends of the conductors are cut to predetermined lengths, so as not to interfere with adjacent conductors. As contrasted with prior art devices of this type, the tool does not require the free ends of the conductors to be inserted into holes in the tool, and the tool has a cutting element which can sever the stubs on the conductors before the conductors are fully seated in the quick clip connectors.
Abstract:
A gas tube protector device for individual telephone subscriber circuits including a secondary air gap means which becomes operative in the event of gas tube failure with accompanying voltage surge.
Abstract:
A protective module of the type used in building entrance terminals having substantially greater heat sensitivity than prior art types, thereby offering protection against sneak currents which are not sufficiently large to activate conventional solder pellet heat sensors. Use is made of a bobbin type heat sensor, the thermal inertia value of which may be varied to alter sensitivity.
Abstract:
An improved telephone protector module for individual subscriber circuits incorporating, in addition to heat sensitive means for grounding outside plant tip and ring currents, switch means for simultaneously opening the tip and ring circuits leading to central office or PBX equipment when excessive current is detected. The switch means is normally in closed position when the heat sensitive means is in unfired condition.
Abstract:
A circuit interrupter having at least two sets of contacts that are electrically connected in series such that when the at least two sets of contacts are opened, they are opened simultaneously. This functions to increase the distance between the sets of contacts as the distance is additive for the series connected sets of contacts, which increases the arc voltage for breaking any arc that may form between the individual sets of contacts more effectively.
Abstract:
A circuit breaker assembly includes a plurality of circuit breakers each including a housing with a trip mechanism therein and each having an opening in a side of the respective housing. Each trip mechanism has a coupler disc connected thereto. The plurality of circuit breakers are aligned in an end-to-end fashion with a trip member positioned along a side of the housings and connected to the coupler discs such that if the first trip mechanism actuates from a untripped state to a tripped state the trip member actuates the second trip mechanism from a untripped state to a tripped state and vice versa.
Abstract:
A circuit interrupter configured to aid in rapidly extinguishing an electrical arc regardless of the polarity of current through a circuit interrupter, and during low current conditions. Various implementations of the circuit interrupter incorporate an electromagnet and a pivoting permanent magnet. These structures produce additive magnetic fields that create a force on an arc between the contacts, urging it toward an arc arresting structure regardless of the electrical polarity of the circuit interrupter or the magnitude of the current through the circuit interrupter.
Abstract:
A circuit breaker which includes a shielding component. The shielding component includes an external portion which defines a space external to the circuit breaker housing. The external portion prevents insertion of the circuit breaker into a breaker box closer than the distances defining the space. This can have the advantage of preventing arcing from the breaker contacts to the breaker box. The external portion may also prevent insertion of the circuit breaker into a breaker box such that a vent in the circuit breaker housing is blocked. In some implementations, the shielding component contains an internal portion which extends into the circuit breaker housing and is disposed to impede debris generated by contact arcing, or other debris, from entering the mechanism of the circuit breaker.
Abstract:
A circuit interrupter for cooling and quenching an electrical arc having a housing with a first contact and a second contact movable with respect to the first contact. An arc splitter is located in an arcing chamber, and an arc runner is located near the second contact. The arc runner has an arc strap facing toward the first contact, a first wall shaped as a rectangular spiral perpendicularly extending from the arc strap, a second wall shaped as a rectangular spiral perpendicularly extending from to the arc strap and opposite the first wall. The arc runner generates a magnetic force on the arc forcing the arc toward the arc splitter.
Abstract:
A circuit interrupter has a first contact, a second contact movable with respect to the first contact, an arcing chamber, and an arc splitter. The arc splitter is located on a first side of the first contact, as is an arc runner. An electrical conductor is connected to the arc runner having a first portion running from the first side of the first contact towards a second side of the first contact, the second side being opposite the first side with respect to the first contact. A second portion is connected to the first portion and the second contact; the second portion is located on the second side of the first contact. A current running through the arc runner and the electrical conductor generates a magnetic force on the arc moving the arc toward the arc splitter.