Abstract: A ground continuity monitor for a tool stop controller includes a pair of resistive conductors connected in series between the power line hot and neutral leads. At the junction therebetween they are connected to the ground lead and to a controllable shunt. The resistive conductors maintain a sufficient voltage at the junction to hold the shunt in a conducting state until the junction is connected to ground through a low impedance, preferably less than substantially 100 ohms. An indicator, such as a lamp, indicates the state of conduction of the shunt, thereby providing the tool operator with an indication of the actual electrical continuity of the ground path from the tool ground lead back to ground at the power line source. In the event of a ground fault, no high voltage is imposed by the monitor on the tool case.

Abstract: A grounding clip provides a grounding path between a receptacle and mounting screw affixing the receptacle to a grounded mounting box. The grounding clip of spring steel has a screw-receiving means that receives a mounting screw. The edges of one side of the clip has sharp teeth which extend slightly outwardly. This side of the clip is between the tab on the mounting or junction box and the tab on the ground yoke of the receptacle. When the clip is assembled to the yoke and the yoke is mounted to the box with the mounting screw, the teeth on the clip bite into the tab on the yoke and flatten out laterally, thereby scraping any oxide off the yoke and insuring a good electrical contact between the ground yoke on the receptacle and the junction box.

Abstract: A power distribution center, particularly adapted for use at marinas, trailer camps and the like, comprises a vertically extending housing adapted to receive power feeder cables from an external power source, which cables are connected to appropriate terminal blocks mounted within the housing. The housing has mounted on the outer surfaces thereof one or more electrical receptacles, the terminals of which are connected to the appropriate terminal blocks within the housing by electrical conductors, and which are adapted to receive plugs of electrical cable, thereby to carry electrical current to power operated equipment. There are also mounted in association with each receptacle an appropriate type of circuit breaker.

Abstract: A cover for electrical receptacles having a passageway therethrough for receiving such a receptacle, and having a pivotally mounted closure member spring urged toward overlying closed position relative to the passageway; a flexible flange extending around the passageway for sealingly engaging the cover when the latter is in closed position.

Abstract: A grounding jack, particularly useful in a patient load center of hospitals, and the like, is disclosed, wherein the male and female members thereof, when assembled, may be locked together by the non-current-carrying or insulated portions thereof, and the frictional engagement between the surfaces of the current-carrying portions is such that breakage of the locking means or inadvertent unlocking between the two members will not impair current flow.

Abstract: An advance grounding system for electrical connectors includes a male attachment portion and a female receptacle portion. The male attachment portion contains a pair of current carrying electrical contact blades and a ground contact blade extending outwardly, with the ground blade having a length greater than the current carrying contacts. The female receptacle includes a pair of electrical terminals positioned in recesses and adapted to receive the current carrying contacts, and a ground terminal which extends to a point adjacent the inner face of the female receptacle. The ground terminal is arranged so that it is not possible for the current carrying blades to contact the female terminals before the ground blade contacts the female ground terminal when the male attachment portion is inserted into the female receptacle portion to complete the electrical connection.

Abstract: A hand trouble lamp with a one-piece molded hollow body of an impact-resistant elastomer open at both ends, and a rigid socket member insertable into said body through one end thereof. The socket member is made in two halves and may be completely bussed, as necessary, and connected to the conductor of a cord outside of the handle body and then inserted therein. A switch or an outlet receptacle or both may be included on the socket member, and both completely covered by the handle body to make it dust and oil proof.

Abstract: A right angle electrical plug is disclosed comprising a housing having a generally right angle configuration and formed with first and second hollow leg members. A plurality of inserts are assembled in the housing and secured in assembled relation without the use of any insert assembly screws, one of the inserts having the contact blades extending therefrom and there being only two screws necessary to hold the entire assembly together. Finger grip means such as oppositely extending flanges on said housing, are provided to be grasped by the fingers to facilitate removal of the plug from an electrical receptacle. The entire plug is formed of an insulating material such as a suitable plastic.