A new and improved intrinsically safe barrier (“ISB”) provides advantages in connection with installation of field equipment in hazardous areas including Division 2/Zone 2 areas. In one embodiment the new ISB provides a pluggable/unpluggable ISB for use with a receiving terminal base adapted for individual field mounting and alternatively for use with a circuit mount terminal base to permit direct mounting of ISB on circuit boards. A highly effective heat sink design and potting material allows for heat dissipation to allow the ISB to serve a wider range of applications.

A power sharing device allows a single high voltage electric socket to be shared with one or more appliances and an EV charger. The device can be easily installed and used without updating the electric circuit of the dwelling. The device senses the load of the appliance socket(s) and automatically disconnects the EV charger socket if significant current is being drawn by the appliance(s). The device may also include a circuit breaker to prevent current overload of the electric circuit. These and other features of the device provide improved safety relative to existing solutions.

The present invention discloses a small sliding multiple plug, comprising a housing, and a plurality of pin holes arranged on the bottom surface of the housing, wherein a first pin, a second pin and a third pin are arranged in the housing; the first pin mainly consists of a ground line leg, a live line leg and a null line leg; when the ground line leg of the first pin is taken as a central point, the second pin is arranged on one side of the central point, and the third pin is arranged on the other side of the central point; and the second pin and the third pin are respectively composed of three legs including the ground line leg. The present invention provides a small sliding multiple plug, which is small in size, has high safety in use, and meets the requirements of safety standards and developing to miniaturization.

A compact battery and voltage supply controller apparatus for a tattoo machine is disclosed. The battery and controller are configured to connect the battery to the tattoo machine through replaceable internally received magnetic connection adapters. The toggle switch operated display screen provides easy-to-view status and health of the battery and incremental voltage adjustment using a voltage boost circuit and adjustment knob. The internal battery can be replaced and/or removed and recharged.

An electrical connector includes: a plastic seat; a tongue; and two rows of terminals; characterized in that a front section of the tongue is a thinner plate body, top and bottom surfaces of the thinner plate body are two front-section surfaces, a rear section of the tongue is a thicker plate body, top and bottom surfaces of the thicker plate body are two rear-section surfaces, the rear-section surface of one of the top and bottom surfaces of the tongue projects more than the entire front-section surface of the corresponding one of the top and bottom surfaces of the tongue by a height so that a step is formed between the rear-section and front-section surfaces of each of the top and bottom surfaces of the tongue. A combination of the bidirectional duplex electrical connector and a docking electrical connector is also provided.

An electrical connector includes: a plastic seat; a tongue; and two rows of terminals; characterized in that a front section of the tongue is a thinner plate body, top and bottom surfaces of the thinner plate body are two front-section surfaces, a rear section of the tongue is a thicker plate body, top and bottom surfaces of the thicker plate body are two rear-section surfaces, the rear-section surface of one of the top and bottom surfaces of the tongue projects more than the entire front-section surface of the corresponding one of the top and bottom surfaces of the tongue by a height so that a step is formed between the rear-section and front-section surfaces of each of the top and bottom surfaces of the tongue. A combination of the bidirectional duplex electrical connector and a docking electrical connector is also provided.

An assembly (10) includes a first connector (12), and a second connector (14) mobile in axial translation relative to the first connector, a first part (16) attached to the first connector, and a first sleeve (18) axially rotatable relative to the first part between a first plurality of positions, a first blocking device (20) blocking the first sleeve, a second part (22) attached to the second connector, and a second sleeve (24) axially rotatable relative to the second part between a second plurality of positions, a second blocking device (26) blocking the second sleeve. The first sleeve, the first part, the second sleeve, and the second part have shapes that provide a coding that allows connection only if the position of the first sleeve matches the position of the second sleeve.

An assembly (10) includes a first connector (12), and a second connector (14) mobile in axial translation relative to the first connector, a first part (16) attached to the first connector, and a first sleeve (18) axially rotatable relative to the first part between a first plurality of positions, a first blocking device (20) blocking the first sleeve, a second part (22) attached to the second connector, and a second sleeve (24) axially rotatable relative to the second part between a second plurality of positions, a second blocking device (26) blocking the second sleeve. The first sleeve, the first part, the second sleeve, and the second part have shapes that provide a coding that allows connection only if the position of the first sleeve matches the position of the second sleeve.

The repair electrical plug adapter is a replacement kit. The repair electrical plug adapter is used to repair one or more damaged NEMA 5-15 electric sockets. The repair electrical plug adapter comprises a housing and a plurality of NEMA 5-15 electric sockets. The repair electrical plug adapter is configured for use with a cable and a national electric grid. The plurality of NEMA 5-15 electric sockets attach to the housing. The plurality of NEMA 5-15 electric sockets replace the one or more damaged NEMA 5-15 electric sockets that are attached to the cable. The cable electrically connects the housing and the plurality of NEMA 5-15 electric sockets to the national electric grid. The national electric grid is a commercially available source of electric energy that is defined elsewhere in this disclosure.

The repair electrical plug adapter is a replacement kit. The repair electrical plug adapter is used to repair one or more damaged NEMA 5-15 electric sockets. The repair electrical plug adapter comprises a housing and a plurality of NEMA 5-15 electric sockets. The repair electrical plug adapter is configured for use with a cable and a national electric grid. The plurality of NEMA 5-15 electric sockets attach to the housing. The plurality of NEMA 5-15 electric sockets replace the one or more damaged NEMA 5-15 electric sockets that are attached to the cable. The cable electrically connects the housing and the plurality of NEMA 5-15 electric sockets to the national electric grid. The national electric grid is a commercially available source of electric energy that is defined elsewhere in this disclosure.