Abstract: A folding portable ramp is provided that includes a first platform section having a first end and a second end, and a second platform section having a first end and a second end. The first end of the second section is pivotally coupled to the second end of the first platform section, and the second section is adapted to be pivoted relative to the first section. A leg support assembly is coupled to at least one of the first and the second platform sections. The support assembly is adapted to be pivoted between a first position wherein the support assembly is oriented generally parallel to the first and the second sections and a second position wherein the support assembly extends outwardly away from the first or second section.

Abstract: A power-driven shutter door includes a curtain supported in a pair of tracks for bi-directional sliding movement open and closed positions, and a power drive assembly for driving movement of the curtain. The power drive assembly includes a pair of sprockets that engage shoes of the curtain, a motor for driving bi-directional rotation of the sprockets, and a control circuit including a switch movable between “open” and “close” positions for supplying power to the motor to move the shutter curtain between positions. A power-driven lock is also provided, and includes a rod supported on the curtain for movement between extended and retracted positions, a manually-operated actuator for shifting the rod between the extended and retracted positions, and a power-driven lock supported on one of the tracks and presenting a locking arm shiftable between an extended position in which the arm protrudes into the track and a relatively retracted position.

Abstract: A power-driven shutter door includes a curtain supported in a pair of tracks for bi-directional sliding movement open and closed positions, and a power drive assembly for driving movement of the curtain. The power drive assembly includes a pair of sprockets that engage shoes of the curtain, a motor for driving bi-directional rotation of the sprockets, and a control circuit including a switch movable between "open" and "close" positions for supplying power to the motor to move the shutter curtain between positions. A power-driven lock is also provided, and includes a rod supported on the curtain for movement between extended and retracted positions, a manually-operated actuator for shifting the rod between the extended and retracted positions, and a power-driven lock supported on one of the tracks and presenting a locking arm shiftable between an extended position in which the arm protrudes into the track and a relatively retracted position.