An electrical connector (2) comprising a quarter turn fastener (4), the quarter turn fastener (4) comprising a stud (6) having at least one helical cam slot (8) and a receptacle (10) comprising at least one cam follower (24) and a biasing means (12), the connector further comprising means for connection (14) to an electrical assembly, wherein the electrical connector has a first electrical contact surface (16) and a second electrical contact surface (17) and releasably connects the first and second surfaces in operative engagement, and wherein the electrical connector maintains a constant clamp force across the surfaces.

An artificial lighted tree is presented with power routed through the trunk and three-wire safety grounding. The tree comprising a fused electrical plug having improved safety features comprising: a body portion surrounding respective first ends of a first, a second and a third electrical wire, the body portion further comprising a fuse holder embedded within an upper region of the body portion, and a fuse adapted to be releasably secured within the fuse holder via releasable securing means, a live blade in communication with the first end of the first electrical wire, a neutral blade in communication with the first end of the second electrical wire, a ground pin receptacle in communication with the first end of the third electrical wire, wherein the body portion surrounds and maintains the live blade, neutral blade, and ground pin receptacle in spaced apart orientation corresponding to polarized sockets on an electrical wall outlet.

The present invention discloses a manual type C-shaped wire clamp operating device, includes an insulating operating rod, wherein an upper end of the insulating operating rod is provided with a threaded rod, and the threaded rod includes an upper thread and a lower thread; a wire clamp clamping device, wherein the wire clamp clamping device includes a first spring, a wire clamp seat and a floating clamping block located above the wire clamp seat, a wire clamp seat threaded hole is formed in the wire clamp seat, the wire clamp seat threaded hole is in fit connection with the lower thread of the threaded rod; a drainage wire pressing device, wherein the drainage wire pressing device includes a guide rod arranged on the wire clamp seat and a drainage wire pressing block sliding along the guide rod, and a pressing block threaded hole is formed in the drainage wire pressing block.

A self-aligning grounding stud arrangement (100) for a housing (120) includes a grounding stud (210) that extends from a first end (212) outside the housing (120) to a second end (214) inside the housing (120). An anti-rotation flange (230) of the grounding stud (210) is received by an anti-rotation receiver (138) of the housing (120). The grounding stud (210) includes a first attachment feature (220) positioned between the first end (212) of the grounding stud (210) and the anti-rotation flange (230) and further includes a second attachment feature (260) positioned between the second end (214) of the grounding stud (210) and the anti-rotation flange (230). The housing (120) includes at least one guide (140) for rotationally orienting the anti-rotation flange (230) with the anti-rotation receiver (138).

A breakaway threaded fastener is provided. The fastener has a stud, a pin, and a cap. The stud has a hollow cavity with a closed end, an open end, a wall, and an outer surface. The outer surface has an external thread. The pin is in the hollow cavity. The pin has a first end at the closed end of the stud and a second end extending above the open end of the stud. The cap has another hollow cavity with a closed end, an open end, and an internal thread. The cap is threadably engaged to the open end of the stud via the internal and external threads so that the second end of the pin abuts the closed end of the cap.

An artificial lighted tree is presented with power routed through the trunk of the tree and three-wire safety grounding. The artificial lighted tree comprising a fused electrical plug having improved safety features comprising: a body portion surrounding respective first ends of a first, a second and a third electrical wire, the body portion further comprising a fuse holder embedded within an upper region of the body portion, and a fuse adapted to be releasably secured within the fuse holder via releasable securing means, a live blade in electrical communication with the first end of the first electrical wire, a neutral blade in electrical communication with the first end of the second electrical wire, a ground pin receptacle in electrical communication with the first end of the third electrical wire, wherein the body portion surrounds and maintains the live blade, neutral blade, and ground pin receptacle in spaced apart orientation corresponding to polarized sockets on an electrical wall outlet.

A pin and sleeve device including a contact carrier with captive set screws is disclosed. In some embodiments, the pin and sleeve device includes a housing and a contact carrier. The contact carrier may include a plurality of contact openings each receiving a terminal, such as a pin or a contact sleeve. The contact carrier may include a tool opening or slot extending from an outer surface or perimeter thereof. The tool opening or slot being in communication with one of the contact openings and/or terminals. A set screw may be positioned within the contact openings, the set screw positioned directly adjacent a retainment wall defining an inner portion of the contact openings. The contact carrier may therefore reduce the likelihood that the set screw may be lost or dropped, as the retainment wall is configured to prevent the set screw from passing through or exiting the tool opening or slot.

An improved electrical power cord adapted to enhance the safety of an artificial lighted tree is presented. Various embodiment electrical power cord design implementations may include a three-prong safety grounded plug located at a first distal end of the electrical power cord, the plug electrically coupled to a multi-conductor cable comprising a neutral member, a hot member and a ground member; a circuit protector connected in-line with the multi-conductor cable, the circuit protector comprising a fuse, or, a circuit breaker, having stationary and movable contacts operable between open and closed positions, and a manually operable reset button operably configured with the circuit breaker and electrically connected between said circuit breaker and the ground member for selectively actuating said circuit breaker for opening said movable contacts; a polarized female socket located at a second distal end of the electrical power cord, wherein the hot member of the multi-conductor cable is electrically coupled to the circuit breaker at a first connection point; and wherein the neutral and hot members of the multi-conductor cable are electrically coupled to the polarized female socket at a second connection point.

A device for monitoring the temperature and tightening of a screw includes a temperature detector positioned near the screw head for measuring the temperature of the screw, a detector of the tightening of the screw, including a sensor member including a first part, positioned on the screw head so as to be rotationally fixed to the screw, and a second part, fixed relative to the first part and arranged to generate a detection state representing a position of the first part relative to the second part, and a first detection unit connected to the sensor member and arranged to determine a degree of tightening of the screw as a function of the detection state of the sensor member.

A pin and sleeve device including a contact carrier with captive set screws is disclosed. In some embodiments, the pin and sleeve device includes a housing and a contact carrier. The contact carrier may include a plurality of contact openings each receiving a terminal, such as a pin or a contact sleeve. The contact carrier may include a tool opening or slot extending from an outer surface or perimeter thereof. The tool opening or slot being in communication with one of the contact openings and/or terminals. A set screw may be positioned within the contact openings, the set screw positioned directly adjacent a retainment wall defining an inner portion of the contact openings. The contact carrier may therefore reduce the likelihood that the set screw may be lost or dropped, as the retainment wall is configured to prevent the set screw from passing through or exiting the tool opening or slot.