Abstract: In one aspect, the disclosure herein provides an apparatus that in one configuration includes a first hydraulic power unit for supplying a first fluid under pressure to a first chamber for controlling motion of a first movable member and a second hydraulic power unit for supplying a second fluid under pressure to a second chamber for controlling motion of a second movable member, an input device configured to provide an input signal for controlling the motions of the first and second movable members and a processor configured to: receive the input signal from the input device; and independently set, in response to the input signal from the input device, a first electrical actuator to control an amount and flow rate of the first fluid to the first hydraulic power unit and a second electrical actuator to control an amount and flow rate of the second fluid to the second hydraulic power unit for controlling the motion of the first and second movable members.

Abstract: A motion sensing necklace comprising includes a pendant attached to lower ends of two lanyards. The pendant includes a help button for a user to generate a signal for help, and a battery to power the motion sensing necklace. A neck strap is attached to upper ends of the first and second lanyards. Two motion sensors are located within opposing ends of the neck strap. A microprocessor located within the neck strap processes signals from the motion sensors to determine whether motion has occurred. A transmitter or transceiver located within the neck strap transmits motion detection signals and alerts generated by the microprocessor.

Abstract: A system for distributing a license key for upgrading an access control system. A portable token that includes first and second identifiers, such as a visible serial number and a concealed control number that can be derived from the serial number. The access control system is identified by a third identifier, such as a MAC address. A license server generates a license key from the first, second and third identifiers that is operative to allow access to software features that are resident on the access control system without the need for an Internet connection.

Abstract: The present invention extends to methods, devices, systems, and computer program products for media management in a security system. A method may comprise receiving media and assigning the received media to an alarm zone of a security system. The method may further include detecting activation of the alarm zone and conveying the media in response to detecting activation of the alarm zone.

Abstract: A fall detection method determines a fall detection algorithm based on sensor data aggregated from a plurality of fall detection devices. Sensor data is obtained from one of the plurality of fall detection devices not included in the aggregated sensor data. A probable fall event of the obtained sensor data is determined based on the fall detection algorithm. An alarm signal is generated based upon the determination of the probable fall event. A validity of the probable fall event is determined, and the fall detection algorithm is refined using the obtained sensor data and the validity of the probable fall event each time sensor data is obtained from any of the plurality of fall detection devices.

Abstract: A fall detection method determines a fall detection algorithm based on sensor data aggregated from a plurality of fall detection devices. Sensor data is obtained from one of the plurality of fall detection devices not included in the aggregated sensor data. A probable fall event of the obtained sensor data is determined based on the fall detection algorithm. An alarm signal is generated based upon the determination of the probable fall event. A validity of the probable fall event is determined, and the fall detection algorithm is refined using the obtained sensor data and the validity of the probable fall event each time sensor data is obtained from any of the plurality of fall detection devices.

Abstract: A method of powering an obstruction detector. Power is provided to an obstruction detector when a motor is executing a first movement and is suppressed to the obstruction detector when the motor is idle and when the motor is executing a second movement. The first movement moves a movable barrier towards a closed position, and the second movement moves the barrier towards an open position.

Abstract: A method of powering an obstruction detector. Power is provided to an obstruction detector when a motor is executing a first movement and is suppressed to the obstruction detector when the motor is idle and when the motor is executing a second movement. The first movement moves a movable barrier towards a closed position, and the second movement moves the barrier towards an open position.

Abstract: A central vacuum power unit includes separate components that can be disassembled and nested together for compact shipment and storage. In the disassembled and nested assembly, the motor module is nested within the dust bucket, and the dust bucket is nested within the body module. For vacuuming operation, the dust bucket is attached below the body module and the motor module is stacked and attached above the body module. A filter is disposed inside the body module and filters debris from air entering the power unit. Debris is collected in the dust bucket, and filtered air is exhausted from a port in the motor module. Latches on the body module are used to attach the dust bucket underneath the body module in operation, and to secure the nested assembly for packaging and shipping.

Abstract: An electromechanical linear actuator assembly having in-line axial load support of its screw drive shaft is provided. The bearing support structure provides a single in-line ball bearing accommodated within a hardened end fitting and a screw pivot recess in the axial screw drive shaft. For axial loading in an opposite direction, a number of smaller ball bearings are provided around the outer periphery of the screw shaft in a groove, and are retained within the hardened end fitting by a bearing retainer. End rod support bearings providing heat compensation and lubrication fluid transfer are also provided. A braking mechanism having increased life and more consistent load engagement is also provided. Further, integrated electronics may be provided for position sensing and power efficiency control.

Abstract: An electromechanical linear actuator assembly having in-line axial load support of its screw drive shaft is provided. The bearing support structure provides a single in-line ball bearing accommodated within a hardened end fitting and a screw pivot recess in the axial screw drive shaft. For axial loading in an opposite direction, a number of smaller ball bearings are provided around the outer periphery of the screw shaft in a groove, and are retained within the hardened end fitting by a bearing retainer. End rod support bearings providing heat compensation and lubrication fluid transfer are also provided. A braking mechanism having increased life and more consistent load engagement is also provided. Further, integrated electronics may be provided for position sensing and power efficiency control.