A telephone wire withdrawing device, which is used for achieving the drawing and withdrawing functions of a telephone wire, enabling a smooth operation, thereby improving the usage experience of a user, and avoiding call distortion caused by using an electric brush because it is unnecessary to use the electric brush. The telephone wire withdrawing device in the application includes a slide block, a machine frame, a microphone, a telephone wire, a first roller, a rotating self-locking mechanism, a second roller and an extension spring, wherein the rotating self-locking mechanism is composed of a base, a gear shell, a paddle, a first resilient sheet and a second resilient sheet.

A toolbox-size device contains wire spools that are supported by both a cradle and a removable axial spindle. This dual support contributes to solving several problems involved with manual wire deployment devices. Particular object spatial and size relationships can include those of the cradle, spindle, spool diameter, spool hub, arbor-opening diameter, enclosure size, and exit aperture location. This provides a solution to reliably and smoothly deploy electrical wire manually from a hand-carried device. The cradle holds spools generally in place when the axial spindle is removed to add or remove spools. The dual support system allows the use of spools with damaged flanges normally not possible with a cradle-based system.

The hose winding device has an open rectangular parallelepiped skeleton frame made of tubular members. The upper cross members at opposite ends of the frame include a lower wringer roller mounted on a shaft fixed to opposite sides of the frame and an upper wringer roller spaced above the lower wringer roller. The wringer rollers compress and flatten the fire hose as it is cranked through the wringer rollers, thereby removing any water left inside the hose. A pair of spaced apart, vertical guide rollers are mounted closely behind the wringer rollers, the four rollers being configured similar to a winch's roller fairlead, permitting the hose to be smoothly wound on the device without first straightening the hose. A hand crank is removably mounted to opposite sides of the frame halfway between opposite ends of the frame. The crank has a hose coupler retainer extending parallel to the crank's axle.

A speed reducer arrangement (200) for a line retraction device (100), including at least one lug (4) fixed on a surface of a rotatable hub (2) and configured to rotate along with the hub (2); at least one brake shoe (5) having at least one groove (8) extending therethrough and configured to at least partially receive the at least one lug (4), such that, as the hub (2) rotates, the at least one brake shoe (5) is configured to slidably move along the at least one groove (8) from an inactivated position, wherein the at least one brake shoe (5) is located nearest the center of the hub (2) to an activated position, wherein the at least one brake shoe (5) contacts at least one contact surface of the line retraction device (100) to thereby slow the rotation of the hub (2); and at least one biasing member (6) configured to urge the at at least one brake shoe (5) towards the inactivated position.

A firefighter training unit for simulating use of a fire extinguishing system, the unit including: a reel; a user-manipulable nozzle; a hose having opposite ends attached respectively to the reel and the nozzle and being partially wound around the reel, wherein rotation of the reel in a first rotational direction allows the hose to be unwound from the reel; a motor configured to drive the reel in a second rotational direction which causes the hose to be wound onto the reel; one or more devices for providing one or more output signals corresponding to one or more simulated operating conditions of the fire extinguishing system; and a controller configured to drive the motor in response to the one or more output signals so as to apply torque to the reel in the second rotational direction to simulate forces applied to the hose during operation of the fire extinguishing system.

A leash including a housing, a reel assembly rotatably coupled to the housing, and a tether coupled to the reel assembly. The reel assembly includes a tether wheel coupled to the tether, and rotatable relative to the housing in a first rotational direction to effectuate extension of the tether, and rotatable in a second rotational direction to effectuate retraction of the tether. A hard stop gear is coupled to the tether wheel, and a soft stop gear is rotatably coupled to the hard stop gear. A dampening spring is coupled to the soft stop gear and the hard stop gear to impart a biasing force on the soft stop gear as it rotates relative to the hard stop gear. A soft stop lever is operatively coupled to the soft stop gear and is configured to selectively restrict rotation of the soft stop gear relative to the housing.

An electronic control unit may, based on received sensor data, automatically direct the operation of a reel assembly for deploying a cable, hose or umbilical connection. The electronic control unit may operate in conjunction with an electro-pneumatic drive to control the reel assembly. Sensors may measure various parameters, such as a measured line tension and/or a length of cable, hose or umbilical connection that has been deployed, and transmit the measured data to the electronic control unit. Optionally, the sensor data and/or user control inputs and system status information may be logged. The system also may use this data to control the system, such as by activating an alarm when a certain alarm limit is exceeded by the data, adjusting the pressure or other parameters of the electro-pneumatic drive, and the like. The system also may generate a visual notification for an operator when an alarm is triggered.

A tape roll holder includes a plate from which extends a cylindrical bearing formed from two or more arcuate prongs. A cylindrical spindle dimensioned to be snugly received within an axially defined hole in the roll of tape is mounted to the bearing such that it is allowed to rotate freely. A spring clip is included to allow the holder to be worn on a belt.

A transport system has a dedicated trailer for transporting a small transport reel (i.e., <18-ft in diameter) of continuous rod to the field. The trailer has a pedestal that can pivot the reel. A hub motor on the pedestal can turn the reel, and a transfer unit and rod bender on the trailer can curve or straighten the rod when being fed into or out of the reel. A power and hydraulic system operates the various hydraulic components on the trailer. In other aspects, the transport system includes stands that can hold the small transport reels on a trailer within a defined transport envelope. When empty, these stands can be stacked on top of one another on the trailer for return to a facility.

A string dispensing assembly is provided comprising a housing having opposed first and second housing ends that define first and second housing openings that lead to a housing interior in which a string supply is stored. A first engagement support member extends outwardly from the housing and has opposed convex and concave sides that extend to an engagement tab. The engagement tab is folded in on itself in such a way that the engagement tab faces the concave side of the first support member. End and feed caps close the second and first openings and a string from the string supply extends through the first housing opening and abuts the housing and feed cap. The engagement tab is adapted to be secured to a main runner folded portion of a first wall angle thus securing the housing, and the string is for aligning and squaring purposes.