A safety gate includes a first column, disposed on a first side of an elevator shaft, a second column, disposed on a second side of the elevator shaft, a first gate panel, and a second gate panel. The first gate panel is coupled to the first column via a first locking hinge. The second gate panel is coupled to the second column via a second locking hinge.

The present invention relates to inflatable bladder actuated water control gates for control of open channels such as rivers and canals and for control of dam spillways without the need for intermediate piers. The air bladder and hinge flap wedge clamping system includes hinged engagement of the upstream edge of the clamps to the foundation so as to prevent the application of bending and shear loads to the anchor bolts. The resulting configuration facilitates the use of high strength alloy steel anchor bolts in a corrosion protected environment and also prevents tensile loading of the concrete foundation and associated cracking of the concrete foundation.

A collapsible gate includes a first side column, a second side column, a collapsible barrier assembly, a receiver, and a powertrain. The collapsible barrier assembly is disposed between the first and second side columns. The collapsible barrier is configured to transition between a collapsed position and a raised position. The receiver is disposed between the first side column and the second side column and is configured to receive at least a portion of the collapsible barrier assembly when it is in the collapsed position. The receiver has a first end coupled to the first lower portion of the side column and an opposite second end coupled to the second lower portion of the second side column. The powertrain is configured to transmit mechanical power to the collapsible barrier assembly to facilitate transitioning the collapsible barrier assembly between the collapsed position and the raised position.

A system for use with an autonomous working machine such as a robotic lawn mower. The system may allow communication (directly or indirectly) between the machine and a gate or other barrier opening to allow unattended or remotely-controlled passage of the machine through the gate. In some embodiments, the mower may include a vision system operable to detect unknown objects within an area adjacent to the gate.

Systems, apparatuses, and methods are provided herein that may be used to monitor a movable barrier operated by a movable barrier operator. In some embodiments, a system includes a camera configured to capture frames, and a control circuit. The camera has a field of view that defines a boundary of each of the frames. The control circuit is configured to receive a first frame, identify a stationary object in the first frame, and define a region of interest “ROI” relative to the stationary object in the first frame. The control circuit is further configured to receive a second frame, identify the stationary object in the second frame, determine whether at least a portion of the ROI is outside of the second frame, and cause the movable barrier operator to enter a failsafe mode upon the at least a portion of the ROI being outside of the second frame.

An information processing device of the present invention includes: a matching means that executes a matching process of performing matching between an object within a captured image obtained by capturing a pre-passing side region of a gate and a previously registered object; a distance estimating means that estimates a distance from the gate to the object within the captured image by using a reference value set based on an attribute of the object within the captured image; and a gate controlling means that controls opening and closing of the gate based on a result of the matching and the estimated distance to the object within the captured image.

A hydraulically damped actuator closes a hinged closure system. The actuator includes an energy storing mechanism that stores energy when the closure system is being opened and restores the energy to effect closure of the closure system. A hydraulic damping mechanism damps the closing movement of the closure system. The actuator further includes a tubular cylinder barrel with first and a second ends and a rotatable shaft with first and a second extremities. The shaft extends through the tubular cylinder barrel. Both extremities of the shaft are available to be connected with a mechanical connector that transfers rotation of the closure system to the shaft, which allows the actuator to be mounted in two opposing orientations depending on the handedness of the closure system.

A barrier operator system such as a residential or industrial access gate system comprises a plurality of components that are mechanically coupled to each other to so form an acoustic chain. Once or more contact microphones are coupled to one or more of the components and used to ascertain operation and functional status of the gate system, and to identify potential or actual modes of failure via determination of acoustic signatures that are indicative of the status and/or failure.

A system for moving a barrier protecting a restricted area. A stationary linear induction motor moves the barrier by applying a magnetic field from the linear induction motor to a reaction fin attached to the barrier. The reaction fin has a groove on each side, which is engaged with guide members to guide the barrier. Holes are evenly spaced along the length of the reaction fin. Magnetic sensors sense the holes during movement of the barrier to determine the speed, position and direction of the barrier. Current flows in the reaction fin melt ice in cold weather environments. The system is operated by a main control logic that receives input data from the electronic sensors and controls the linear induction motor, heater and locking mechanism. An inductive connection charges a storage device mounted on the barrier, which storage device powers warning signals on the barrier.