摘要:
A laser alignment device provides horizontal and vertical reference planes, lines, and points. The alignment device includes a pendulum assembly that supports a laser beam source assembly, two reflectors, and two motors. The laser beam source directs beams onto the reflectors—producing a horizontal reference beam and a vertical reference beam. Each reflector is rotated by one of the motors. Continuous rotation generates a reference plane; dithering generates a reference line, and no movement results in a reference point. The pendulum assembly includes a coarse pendulum that supports a fine pendulum, as well as the rotating motors and beam reflectors. The coarse pendulum roughly levels the alignment device. The fine pendulum supports the laser beam source assembly and brings the alignment device to a level position. The laser alignment device also includes a motor control system that enables users to accurately position the device's references.
摘要:
An aircraft powering system is provided which includes an aircraft electrical connector is provided with features to allow facile engagement with an aircraft and strong retention forces. The aircraft powering system may include the aircraft electrical connector having a unique biasing mechanism and modular construction, wherein the biasing mechanism is configured to place differential forces onto mating electrical connectors from an aircraft. The biasing mechanism may be operatively coupled to a handle or trigger, which may be easily engageable by an operator.
摘要:
An aircraft electrical connector is provided with features to allow facile engagement with an aircraft and strong retention forces. The aircraft electrical system may include the aircraft electrical connector having a unique biasing mechanism and modular construction, wherein the biasing mechanism is configured to place differential forces onto mating electrical connectors from an aircraft. The biasing mechanism may be operatively coupled to a handle or trigger, which may be easily engageable by an operator. In one embodiment, an electrical connector may include a cam plate disposed between electrical connectors. The cam plate is configured to place differential forces on mating connectors inserted into the electrical connectors. In another embodiment, an electrical connector includes a moveable shaft that is disposed between electrical connectors. The shaft is configured to bias the position of the electrical connectors to place differential engagement and retention forces on mating connectors inserted into the electrical connectors.
摘要:
An aircraft powering system is provided which includes an aircraft electrical connector is provided with features to allow facile engagement with an aircraft and strong retention forces. The aircraft powering system may include the aircraft electrical connector having a unique biasing mechanism and modular construction, wherein the biasing mechanism is configured to place differential forces onto mating electrical connectors from an aircraft. The biasing mechanism may be operatively coupled to a handle or trigger, which may be easily engageable by an operator.
摘要:
An aircraft powering system is provided which includes an aircraft electrical connector is provided with features to allow facile engagement with an aircraft and strong retention forces. The aircraft powering system may include the aircraft electrical connector having a unique biasing mechanism and modular construction, wherein the biasing mechanism is configured to place differential forces onto mating electrical connectors from an aircraft. The biasing mechanism may be operatively coupled to a handle or trigger, which may be easily engageable by an operator.
摘要:
A suspended exercise device comprising an inelastic elongated member that passes through and is supported by a pulley with stoppers on the inelastic elongated member where the placement of the stoppers on the inelastic elongated member determines how much, if any, of the elongated member can pass through the pulley.
摘要:
There is described a method for monitoring the functionality of an automation system of a plant comprising at least one main processor, parts of the plant being monitored and controlled using a user software, which is constructed of a number of program modules and which is run on the main processor. A co-processor is assigned to the main processor, and a message is transmitted from the main processor to the co-processor. When received, this message is used by the co-processor to start a monitoring time. When a subsequent message is received, this monitoring time is reset before said monitoring time has elapsed, otherwise a fault is identified once the monitoring time has elapsed.
摘要:
A concrete lid for an in-ground utilities box includes a plastic reinforcement structure filled with concrete. The plastic reinforcement structure includes one or more plastic sidewalls that protect the edges of the lid from damage. The upper and lower surfaces of the lid are exposed concrete (with the exception of the upper and lower edges of the one or more plastic sidewalls). The one or more plastic sidewalls laterally surround a plastic reinforcement grid, which is centrally located between the upper and lower edges of the one or more plastic sidewalls. The one or more plastic sidewalls can be integrally formed with the plastic reinforcement grid. The plastic reinforcement grid reinforces the concrete lid, eliminating the need for separate reinforcement material. Support struts can be used to support the plastic reinforcement grid while wet concrete is being poured into the plastic reinforcing structure.