There is provided a power connector system for electrically connecting a power source to a device. The power connector comprises a first component and a second component which each have a plurality of electrical contacts disposed on a face thereof. The contacts each include an electrically resistive element having an impedance. When the first and second components are coupled, a logic unit controls enables current flow between the first and second components based on the impedances.

An overhead arm assembly for a patient support apparatus includes a user interface device. The user interface device has a support structure for supporting a personal digital assistant and a charging port for personal digital assistant.

A thermal sensing system includes an electrical contact, a sensing element, and at least one position sensor. The electrical contact releasably connects to a mating contact for establishing a conductive path across a mating interface. The electrical contact defines a channel therein that extends from an opening along an outer surface of the electrical contact. The sensing element is at least partially outside of the channel and is configured to move relative to the electrical contact from a first position to a second position based on a temperature increase within the channel that exceeds a designated threshold temperature. The at least one position sensor is spaced apart from the electrical contact and is configured to detect a position change of the sensing element from the first position to the second position, indicating that the temperature within the channel exceeds the designated threshold temperature.

An air cleaner includes a first air cleaner having an output part, a second air cleaner configured to be electrically connectable to the first air cleaner, a power adapter detachably provided to supply power to the second air cleaner, a first input terminal provided in the second air cleaner and configured to be electrically connected to the output part, a second input terminal provided in the second air cleaner and configured to be electrically connected to the power adapter; and a switch configured to electrically connect the first input terminal to the output part or to electrically connect the second input terminal to the power adapter.

An air cleaner includes a first air cleaner having an output part, a second air cleaner configured to be electrically connectable to the first air cleaner, a power adapter detachably provided to supply power to the second air cleaner, a first input terminal provided in the second air cleaner and configured to be electrically connected to the output part, a second input terminal provided in the second air cleaner and configured to be electrically connected to the power adapter; and a switch configured to electrically connect the first input terminal to the output part or to electrically connect the second input terminal to the power adapter.

An intelligent power connecting device includes two connecting units to be connected and on-off units. The connecting units have conductor parts, insulation parts, and trigger units; the on-off units are electrically connected with the trigger units; delay units can be connected in series between the on-off units and the trigger units. A short circuit or electric leakage caused by instant electric conduction of the connector in a connecting process can be avoided. Intelligent control is achieved and the short circuit or electric leakage phenomenon caused by instant electric conduction is prevented during connection in the complex environment; electrified positions of the connector are fully isolated from the external environment and the connector is intelligently controlled; the insulation parts of the connector can achieve sealing isolation, the connected positions are effectively isolated from the complex external environment, and thus the two connecting units can be intelligently connected in the complex environment.

An intelligent power connecting device includes two connecting units to be connected and on-off units. The connecting units have conductor parts, insulation parts, and trigger units; the on-off units are electrically connected with the trigger units; delay units can be connected in series between the on-off units and the trigger units. A short circuit or electric leakage caused by instant electric conduction of the connector in a connecting process can be avoided. Intelligent control is achieved and the short circuit or electric leakage phenomenon caused by instant electric conduction is prevented during connection in the complex environment; electrified positions of the connector are fully isolated from the external environment and the connector is intelligently controlled; the insulation parts of the connector can achieve sealing isolation, the connected positions are effectively isolated from the complex external environment, and thus the two connecting units can be intelligently connected in the complex environment.

An electrical connector includes a male electrical plug, a female socket, a housing, and a control system. The male electrical plug, which is supplied with power, is electrically connected to the female socket. The housing contains the male electrical plug, the female socket, and a control system. The control system includes a temperature sensor and a transceiver with the temperature sensor sensing a temperature at a location within the housing and the transceiver transmitting a signal representative of the temperature to an alarm device remotely located from the electrical connector. The electrical connector can include one or more switches that are remotely controllable by the alarm device to interrupt the electrical connection between the male plug and the female socket.

An electrical connector includes a male electrical plug, a female socket, a housing, and a control system. The male electrical plug, which is supplied with power, is electrically connected to the female socket. The housing contains the male electrical plug, the female socket, and a control system. The control system includes a temperature sensor and a transceiver with the temperature sensor sensing a temperature at a location within the housing and the transceiver transmitting a signal representative of the temperature to an alarm device remotely located from the electrical connector. The electrical connector can include one or more switches that are remotely controllable by the alarm device to interrupt the electrical connection between the male plug and the female socket.

A mobile device electrical outlet, including a main body, a plurality of sockets removably disposed within at least a portion of an interior of the main body to provide electrical power in response to receiving a connection from an electrical plug, and a plurality of charging cords disposed within at least a portion of the interior of the main body to provide electrical power in response to receiving a connection from a mobile device.