Abstract: A protective fuse assembly for a current limiting fuse of the type, including a dielectric housing enclosing the fuse, an end cap secured to the lower end of the fuse by a pyrotechnic charge assembly, the end cap supporting the housing on the fuse, an end cap mounted on the upper end of the fuse for centering the housing on the fuse, and an electrically conductive wire connecting the charge to the fuse whereby the charge is detonated when the fuse senses a fault current to release the lower end cap from the fuse so that the housing drops to the bottom of the fuse.

Abstract: A current limiting oil immersible fuse including a tubular housing having a resilient elastomeric cap sealed to each end of the housing, an end cap independently mounted on each end of the housing and overlying the resilient elastomeric cap and a fuse assembly supported in the housing by the end caps.

Abstract: A roll-off container in combination with a tilt bed truck which incorporates apparatus for heating the container side walls and bottom of the container with truck exhaust to prevent freezing during inclement weather. The connection between the container and a truck exhaust is made and broken automatically during normal loading and unloading operations of the roll-off container and tilt bed truck.

Abstract: A mechanism to control opening/closing of a container door[s] is disclosed. The mechanism is generally located at one end of the container and utilizes a geometric arrangement of opposing fluid actuated cylinders, control members and pivot members to control movement of the doors. A control mechanism allows an operator to selectively open the doors simultaneously or independently. In the preferred embodiment, the control members are rigid members each attached at its top end to a respective door and at its bottom end to a respective pivot member rotatably mounted to the container. Distances between each of the control member bottom ends and a respective one of the rotatable mounts of the respective pivot member to the container for both control members are substantially equal.

Abstract: An apparatus for securing a rotatable trailer door is disclosed. The apparatus includes a fluid actuated cylinder having a free end and a fixed end with the fixed end being rotatably connected to the trailer; a control member, rotatably connected to the trailer, locks the door in its closed position; a control link, having a first end rotatably connected to the control member and a second end rotatably connected to the fluid actuated cylinder free end; and, an adjustable link, having a fixed end rotatably connected to the trailer and a free end rotatably connected to both the free end of the fluid actuated cylinder and the second end of the control link.

Abstract: A low fault current interrupting fuse assembly for a full range current limiting fuse of the type having a high fault current interrupting fuse element connected in series with the low fault current interrupting fuse assembly, said assembly including a first fuse element having a high melt temperature characteristic and a second fuse element having a low melt temperature characteristic, the first and second fuse elements being connected in parallel and having different diameters to provide current interruption at different time-current characteristics under low fault current conditions.

Abstract: A fault sensing system for protecting a transformer, the system including a partial range current limiting fuse connected in series in the primary circuit for the network transformer, a normally open vacuum switch connected to the primary circuit and shunted to ground between the current limiting fuse and the transformer, a solenoid actuated assembly for closing the vacuum switch and a fault sensing circuit assembly operatively connected to energize the solenoid assembly, the fault sensing circuit being normally de-energized and including a current transformer mounted on the primary circuit and a low voltage fuse element connected across the current transformer, the fault sensing circuit assembly being energized on operation of the low voltage fuse element to momentarily energize the solenoid.

Abstract: A high voltage fuse having a fuse assembly embedded in a granular dielectric material within a cylindrical dielectric housing, the fuse assembly including a number of fuse support surfaces, a support ring at each end of the plates to hold the plates in on equally spaced radial rotation, a conductive plate secured to each of said rings and including a threaded boss, a fuse element helically wound around said support surfaces and being electrically connected to said support plates, an electrically conductive end cap having a threaded stud and being mounted at one end of said housing, whereby the boss on one end of said fuse assembly is connected to said stud.

Abstract: A current-limiting fuse comprises a hollow insulating housing; metallic end cap assemblies at opposite ends of the housing; a multi-ribbed dielectric spider assembly having metallic terminator plates connected at opposite ends disposed within the housing with each terminator plate electrically and mechanically connected to an associated end cap assembly; a plurality of fusible elements helically wound on the spider assembly with their ends electrically and mechanically secured to the terminate plate; a visual indicator pin mounted on one end of the spider assembly and movable by a biasing spring from a retracted position wherein it is secured by a fusible wire to a tripped (fuse-blown) position wherein it projects through aligned holes in an associated terminator plate and end cap assembly; and granular dielectric material filling the housing.

Abstract: An arc snuffing device for use on high voltage circuits during loadbreaking operations, the device including an arc quenching tube biased for movement over an electrical contact and an arc quenching member during a load breaking operation to confine the arc produced on loadbreak to the space between the arc quenching tube and the arc quenching member, the arc quenching tube further defining the direction of flow of the arc quenching gases produced by the arc to produce a partial vacuum in the space where the arc is confined and induce an air blast into the space to quench the arc, the arc quenching tube being automatically reloaded on reclosing of the electrical contacts.

Abstract: A six rib spider assembly for a fuse including a dielectic housing having end caps for supporting the spider assembly within the housing and a fusable ribbon helically wound on the spider assembly, the housing being filled with a granular dielectic material. The spider assembly including three mica plates each having a number of notches in their longitudinal edges to define support surfaces along each longitudinal edge for the fusable ribbon. These support surfaces on each longitudinal edge being offset from the support surfaces on the opposite longitudinal edge as well as from the support surfaces on each of the other mica plates. Each plate also including at least one longitudinal slot intermediate the longitudinal edges of the plate with one of the plates including a second slot, whereby the plates can be cross fitted into each other with the plates angularly related so that the support surfaces define a helical path for the fusable ribbon.

Abstract: A full-range, current limiting fuse which includes a modular fuse subassembly which can be assembled with any pair of several types of paired end caps to construct any one of several types of fuses. This modular subassembly includes a main fuse element helically wound about a gas evolving spider and connected to element termination plates mechanically attached to each end of the spider, and an auxiliary fuse element, electrically isolated from the main element, which is also helically wound about the spider and connected at one end to a contact button centrally disposed at one end of the spider.This modular subassembly is positioned within a sand-filled fuse tube sealed at both ends by brass end caps which are magnetically formed and epoxied thereon. The main fuse element is electrically connected at each end to a respective end cap by terminal tabs of the element terminations which extend through matching openings in the caps, and are soldered therein to hermetically seal the openings.

Abstract: A fusible element for a current limiting fuse includes two silver ribbons, each provided with a plurality of holes spaced apart along the length thereof which define fusible points of reduced cross sectional area, one of these ribbons including a conventional "M" spot consisting of a body of low melting temperature alloy such as tin-lead solder, in intimate contact with the silver ribbon. One end of each of the silver ribbons is joined to a respective end of a centrally disposed tin wire element by a copper interconnecting member. This tin wire central portion of the fusible element has a melt I.sup.2 t which is equal to or greater than that of the silver ribbons in series with it.

Abstract: An improvement in a high voltage, full-range, current limiting fuse of the type which includes a perforated ribbon main fusible element wound about a gas evolving spider within a sand filled enclosure, and having a portion in intimate contact with a body of low melting temperature alloy, and an auxiliary fusible element whose ends are closely spaced from the main element on opposite sides of the alloy body.The portions of the main element in contact with the alloy body, and adjacent the ends of the auxiliary element are relatively long portions having a uniform cross sectional area less than half the cross sectional area of an unperforated remaining portion of the main element, to thereby reduce the time required for the fuse to clear the low magnitude fault current.