A casing for connecting first and second power cords, the casing having a set of grip mechanisms with facing grip members that have serrated surfaces arranged to grip the first power cord and provide increased grip pressure in response to tension applied to the first power cord in order to resist the first power cord being pulled through the grip members and out of the casing.

Electrical power supply cord retention systems are described. Also described are drain cleaning machines using such cord retention systems. In addition, methods of selectively retaining power cords in association with drain cleaning machines are described.

An electrical connector body is provided includes first and second housing portions formed from molded plastic. The housing portions include first and second interface surfaces that are configured to butt against one another to define a housing and one or more electrical components are disposed within an interior of the housing. The one or more electrical components may comprise connectors of a male or female cord cap, an in-line surge suppression circuit, and/or a compact automatic transfer switch. In one implementation, each of the first and second connector body portions may include a strain relief extension for engaging an electrical cord and a compression member (3691) may be disposed over the strain relief extensions to secure together the first and second connector body portions. The compression member may be selected from a set of compression members based on a size of the electrical cord.

A power cord locking assembly includes a button projecting from an upper surface of electrical outlet housing having an outlet core therein. The button is selectively positionable relative to the housing between a locked position and an unlocked position in a direction obliquely oriented to a plug insertion axis, with the locked position engaging and securing the plug connector housing in the mated position on the outlet core, and with the unlocked position disengaged from the plug connector housing for removal of the mated plug connector housing from the at least one outlet core.

A power extension cord comprises a body, a cavity extending completely through the body, and a gap disposed along a perimeter of the body that extends through to the cavity, such that the cavity is accessible from the exterior of the receptacle head through the gap. One or more receptacles are disposed along the exterior of the body. Preferably, a gate may be provided, the gate having an open position in which the cavity is accessible through the gap and a closed position in which the gate blocks the gap and restricts access to cavity.

A power extension cord comprises a body, a cavity extending completely through the body, and a gap disposed along a perimeter of the body that extends through to the cavity, such that the cavity is accessible from the exterior of the receptacle head through the gap. One or more receptacles are disposed along the exterior of the body. Preferably, a gate may be provided, the gate having an open position in which the cavity is accessible through the gap and a closed position in which the gate blocks the gap and restricts access to cavity.

An information processing apparatus includes a recess formed on a bottom surface of a housing of the information processing apparatus; a connector provided in the recess; a hook being a pair of protrusions for winding and fixing the cable and provided in the recess; and an open space opening from the recess to a side surface of the housing. The protrusion has a winding portion protruding from a bottom surface of the recess, and a holding portion formed by bending and extending the winding portion. One protrusion in a first hook is arranged within a predetermined distance from the open space, and one protrusion in a second hook is arranged adjacent to the protrusion of the first hook. The protrusions of the first and second hooks are arranged so that the holding portions in the first and second hooks are alternately opposed to each other, and are partially overlapped.

A retainer resists decoupling of a first connector of a first cord from a second connector of a second cord. The retainer includes a first receiver having an adjuster to adjust the receiver about a portion of the first cord. The retainer includes a second receiver having an adjuster to adjust the receiver about a portion of the second cord. A connector housing couples the first and second receiver. The first receiver, second receiver, and connector housing form a continuous chamber in which lies portion of the first and second cords connected together when the retainer resides in an installed orientation. The retainer, in the installed orientation, resists incursion of water, dust particulate matter and other debris into the continuous chamber.

A plug holder for installing a male plug end of a marine battery charger on a marine vessel includes an outer housing, a removable sleeve, and a backstop. The outer housing has a front end defining a plug opening and a back end defining a back opening, wherein the outer housing is attachable to a vessel hull and configured to hold a male plug end of the marine battery charger within the outer housing such that it is accessible through the plug opening. The removable sleeve fits within the outer housing and is shaped to secure the male plug end within such that it does not move when connecting or disconnecting thereto. The backstop is removably connectable to the back end of the outer housing to cover the back opening. The backstop is configured to retain the removable sleeve and the male plug end within the outer housing.

A connecting-fixing structure, used for detachably connecting a main body of an electrical appliance with a power cord, includes a connection end, a locking member, and a rotating sleeve. The locking member includes a supporting shaft and a locking portion which rotates by the supporting shall as a fulcrum. A locking fitting portion is disposed on the tail end of the power cord and adapted to the locking portion. Furthermore, a rotating sleeve is rotatably sleeved on the connection end, an inner wall of the rotating sleeve has a driving part, and the rotating sleeve rotates to drive the driving part to further drive the locking portion to rotate, thereby locking the locking portion or unlocking the locking portion from the locking fitting portion. The power cord can be disassembled and assembled only by rotating the rotating sleeve, and the operation is convenient, and the structure is simple.