A tilt-up door having vertical side members each having a pivot point, the pivot points move upward or downward when an actuator is activated to move the door between open and closed positions. First and second cams connected to the vertical side members at a lower end of the cams, each of said cams extend from the lower end thereof upwardly and arcuately toward an interior of a building to a distal terminal end thereof, each of the ends contacts a cam follower. The cam followers slide along the first and second cams and guide the first and second cams and the door as the door moves between the open and closed positions.

A threaded drum is rotated by a drive shaft. As the threaded drum rotates, part of a cable is wrapped around the drum, while at the same time, a second part of the cable is unwrapped from the drum. Rotation of the drive shaft is based on rotation of an operator.

A threaded drum is rotated by a drive shaft. As the threaded drum rotates, part of a cable is wrapped around the drum, while at the same time, a second part of the cable is unwrapped from the drum. Rotation of the drive shaft is based on rotation of an operator.

A threaded drum is rotated by a drive shaft. As the threaded drum rotates, part of a cable is wrapped around the drum, while at the same time, a second part of the cable is unwrapped from the drum. Rotation of the drive shaft is based on rotation of an operator.

A threaded drum is rotated by a drive shaft. As the threaded drum rotates, part of a cable is wrapped around the drum, while at the same time, a second part of the cable is unwrapped from the drum. Rotation of the drive shaft is based on rotation of an operator.

The gate has an exchangeable span that is fixed to the load bearing beam and is connected with pulley bearings and rope-slings to the system of adjustable counterweights. The drive system is fitted with an electric drive with a worm-wheel mounted to the load bearing beam that travels vertically along the worm. The beam, span and the drive travel on adjustable guiderails inside a reinforced concrete pit in the direction opposite to that of counterweights. The load bearing beam is fitted with rollers and retaining rollers mounted to the cover. Emergency (manual) operation of the gate is possible by turning a crank handle connected with the worm, having released the lock that prevents the worm from rotating on its axis.

The gate has an exchangeable span that is fixed to the load bearing beam and is connected with pulley bearings and rope-slings to the system of adjustable counterweights. The drive system is fitted with an electric drive with a worm-wheel mounted to the load bearing beam that travels vertically along the worm. The beam, span and the drive travel on adjustable guiderails inside a reinforced concrete pit in the direction opposite to that of counterweights. The load bearing beam is fitted with rollers and retaining rollers mounted to the cover. Emergency (manual) operation of the gate is possible by turning a crank handle connected with the worm, having released the lock that prevents the worm from rotating on its axis.

Windows including one or both of a powered sash driving apparatus and a window balance apparatus and further including a sash connector block and latch bolt assembly are described herein, along with methods of assembling and/or operating the windows.

Windows including one or both of a powered sash driving apparatus and a window balance apparatus and further including a sash connector block and latch bolt assembly are described herein, along with methods of assembling and/or operating the windows.

A garage door opener assembly, for opening and closing a garage door, including: a garage door, wherein the garage door is displaceable between open and closed positions; a motor, wherein the motor drives at least one of a screw shaft, a belt, and a chain and, in turn, a door opener arm secured to the garage door; a battery backup unit, wherein the battery backup unit includes a secondary electrochemical cell in electrical communication with the motor; and a kinetic energy charger, wherein the kinetic energy charger is in electrical communication with the secondary electrochemical cell.