A lockout device includes a plurality of rigid panels and a flexible body extending along an insertion axis which has, on one axial end thereof, a selectively closeable opening. The rigid panels are affixed to sidewalls of the flexible body with the rigid panels being positioned about the insertion axis. When the selectively closeable opening is opened, the flexible body and the plurality of rigid panels collectively define an interior volume for reception of a pendant control or other terminally-positioned electrical structure on a cord through the selectively closeable opening. When the selectively closeable opening is closed around the cord from which the pendant control or other terminally-positioned electrical structure extends, the pendant is secured in the interior volume and use of the pendant is inhibited by the plurality of rigid panels of the lockout device.

An in-line switch assembly comprising a housing and two ports at different parts of the housing for insertion of an end of a power cord into the housing. The housing has first and second housing parts. A connection mechanism is provided in each of the ports, adapted to receive an end of a power cord, and is operable to cause piercing of a piercing part through a sheath of a power cord and then electrical contact with a conductive core of the power cord. The housing is configured to undergo from a first state in which the first and second housing parts are partially attached together, thereby allowing insertion of an end of a power cord through each of the ports to the respective connection mechanism, to a second state in which the first and second housing parts are fully attached together, with an inserted end of a said power cord being acted upon by the connection mechanism.

An inspection station is capable of being used under harsh conditions. The inspection station includes switch elements to which the inspection station is responsive for generating a predetermined control signal in response to actuation of a switch element. A fluid tight sealing element isolates an interior of the inspection station from an outside of the inspection station, the sealing element including one or more flexible button areas at the locations of the switch elements to provide access from the outside of the inspection station to actuate the switch elements located in the interior of the sealing element.

This is a level designed to light-up when level. The drawings and specifications illustrate how each embodiment, nos. 1 thru 10, FIGS. 1 thru 10a, is designed to achieve this by its unique switching system. Each system is designed to complete the electrical circuitry as required for the level's lights to illuminate when the level is level. Each embodiment and switch system, also referred to as switch mechanism or contact switch, utilizes gravity and balance to direct the moving parts and complete the circuitry, whether by use of a pendulum, wheels, ball, balls, roller, rollers, liquid or leveling arm. The circuitry includes lights(s), battery(s), wiring, the switch system, and optionally a manual on/off override switch.

Head-mounted augmented reality (AR) devices can track pose of a wearer's head to provide a three-dimensional virtual representation of objects in the wearer's environment. An electromagnetic (EM) tracking system can track head or body pose. A handheld user input device can include an EM emitter that generates an EM field, and the head-mounted AR device can include an EM sensor that senses the EM field. EM information from the sensor can be analyzed to determine location and/or orientation of the sensor and thereby the wearer's pose. The EM emitter and sensor may utilize time division multiplexing (TDM) or dynamic frequency tuning to operate at multiple frequencies. Voltage gain control may be implemented in the transmitter, rather than the sensor, allowing smaller and lighter weight sensor designs. The EM sensor can implement noise cancellation to reduce the level of EM interference generated by nearby audio speakers.

An inspection station is capable of being used under harsh conditions. The inspection station includes switch elements to which the inspection station is responsive for generating a predetermined control signal in response to actuation of a switch element. A fluid tight sealing element isolates an interior of the inspection station from an outside of the inspection station, the sealing element including one or more flexible button areas at the locations of the switch elements to provide access from the outside of the inspection station to actuate the switch elements located in the interior of the sealing element.

An in-line switch assembly comprising a housing and two ports at different parts of the housing for insertion of an end of a power cord into the housing. The housing has first and second housing parts. A connection mechanism is provided in each of the ports, adapted to receive an end of a power cord, and is operable to cause piercing of a piercing part through a sheath of a power cord and then electrical contact with a conductive core of the power cord. The housing is configured to undergo from a first state in which the first and second housing parts are partially attached together, thereby allowing insertion of an end of a power cord through each of the ports to the respective connection mechanism, to a second state in which the first and second housing parts are fully attached together, with an inserted end of a said power cord being acted upon by the connection mechanism.

Head-mounted augmented reality (AR) devices can track pose of a wearer's head to provide a three-dimensional virtual representation of objects in the wearer's environment. An electromagnetic (EM) tracking system can track head or body pose. A handheld user input device can include an EM emitter that generates an EM field, and the head-mounted AR device can include an EM sensor that senses the EM field. EM information from the sensor can be analyzed to determine location and/or orientation of the sensor and thereby the wearer's pose. The EM emitter and sensor may utilize time division multiplexing (TDM) or dynamic frequency tuning to operate at multiple frequencies. Voltage gain control may be implemented in the transmitter, rather than the sensor, allowing smaller and lighter weight sensor designs. The EM sensor can implement noise cancellation to reduce the level of EM interference generated by nearby audio speakers.

A durable and secured switch assembly includes an alternate action switch with a push button on one end and two primary cable terminals on the opposing end. The switch is secured in a housing with a lumen configured to securely retain the switch body. A first section of the lumen at the proximal end includes peripheral spacing for epoxy between the switch body and the inside wall of the housing. A second section of the lumen at the distal end includes a second peripheral spacing for epoxy between the switch body and the inside wall of the housing. The second section includes a peripheral notch for securing a cover that encloses the primary cable terminals in a cavity that is filled with epoxy. The housing includes a primary channel that connects a primary cable to the primary cable terminals and secondary channel for securing a secondary cable to the housing.

A remote controlled extension cord. The extension cord has a wire attached to a plug with an integrated base. The base serves to cradle a remote control, which is used to turn power on/off to the extensions on the cord. The extension cord has a number of advanced operations, for example a sequential flash operation which cycles power between all of the individual sockets in the extension cord in sequence, and then repeats the sequence. This can all be controlled by the remote control.