Square D Company

Other

Daniel J Runyan

Thomas A Edds

Willard J Rezac

Ronald J Bilas

Robert G Cook

Gary J Irons

A fluid conduit ramp construction provides partitions within a low profile outer conduit to reduce weight and increase strength while having a reduced device pressure loss at high flow rates such as are required for fire-fighting circumstances where large quantities of water must be supplied across a road or thoroughfare. The fluid conduit ramp may be rigid or flexible and of sufficient width to unconditionally provide fluid conduit cross-sectional areas larger than the nominal diameter of fire hose with which it is used. The fluid conduit ramp can be quickly deployed by one or two persons requiring only a short duration of traffic interruption after which traffic flow may be resumed at higher speeds than are possible using hose bridges.

Fluid conduit ramp

An anti-rotation device for preventing the pivotal rotation of a circuit breaker required for removal of that circuit breaker from electrical distribution equipment in which it is installed is disclosed.

Circuit breaker assembly

A remotely controllable circuit breaker device for interrupting power in a circuit path between a source and a load includes local and remote monitoring capabilities and a worm-gear mechanism for reliable control of the interruption mechanism. The device includes a first contact and a second contact cooperatively arranged in the circuit path so as to provide current from the source to the load. At least one of the contacts are movable for interrupting the power provided to the load. The worm gear mechanism includes a motor with a rotatable shaft which responds to open and closed control signals generated from a remote location, and a gear, rotatably responsive to the rotatable shaft, for controlling the movable contact so that the circuit path is interrupted and established, respectively. The worm gear mechansim controls the movable contact using a coupling arrangement, which has a first part coupled to the movable contact and a second part coupled to the gear.

Remote control circuit breaker

A plug-in ground fault interrupting type circuit breaker includes a resilient jaw for engaging the neutral bar in a loadcenter. The jaw is formed at the end of a conductive strap which passes through the window of a transformer and terminates in a screw terminal for attachment to a neutral load conductor. The phase conductive path also includes a conductive strap that is coupled at one end to a phase load conductor terminal and at its other end to the breaker trip mechanism. The transformer and both strap conductors are mounted to a printed circuit board that is included within the breaker housing. The invention eliminates the separate pigtail for connecting the load neutral conductor to the loadcenter neutral bar.

Plug-in circuit breaker

A circuit breaker auxiliary device is housed in its own separate enclosed container and is accessible by a drive pin through an opening in the container mounting surface. A drive pin is inserted into an opening in a circuit breaker housing mounting surface. The container is snap-fitted flushly to a side of the circuit breaker housing. The internal trip mechanism of the circuit breaker and the operative mechanism of the auxiliary device communicate via the drive pin cooperatively linked to each mechanism and operating through the aligned openings in the container and the circuit breaker housing.

Circuit breaker auxiliary device snap-on package and method of

A circuit breaker consisting of a housing having a fixed contact and a movable contact mounted on a blade which in turn is pivotally supported on a blade carrier that is pivoted within the housing and a handle that cooperates with the blade carrier to pivot the carrier between positions. A trip lever is pivotally mounted in the housing and has biasing means interposed between the blade and the trip lever to pivot the blade between respective positions with latch means holding the trip lever in a position where the blade and blade carrier are biased to close the contacts. The handle and carrier have cooperating camming surfaces that magnify the forces applied to the handle for pivotal movement of the carrier.

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Rodanthe, NC, United States of America

Daniel J Runyan