A gate opener assembly is comprised of a gate and an anchor assembly having a platform. A plurality of track assemblies on the platform provide a track on which the gate may slide from a first position (closed) to a second position (open) and any position in between. A guidepost having a “Shepherd's hook” configuration guides the gate as the gate passes therethrough. A pair of rollers within the interior of the top of the guidepost makes continuous contact with each side of the top of the gate both while the gate is stationary and in motion. A gate opener controller contains the required electrical connections to fully the operate gate opener assembly. Subterrain anchor supports provide the necessary support for the gate opener assembly. An alternative embodiment accommodates nontraditional configured gates. Installation of the gate opener assembly is performed by do-it-yourselfers in minimal time.

A gate opener assembly is comprised of a gate and an anchor assembly having a platform. A plurality of track assemblies on the platform provide a track on which the gate may slide from a first position (closed) to a second position (open) and any position in between. A guidepost having a “Shepherd's hook” configuration guides the gate as the gate passes therethrough. A pair of rollers within the interior of the top of the guidepost makes continuous contact with each side of the top of the gate both while the gate is stationary and in motion. A gate opener controller contains the required electrical connections to fully the operate gate opener assembly. Subterrain anchor supports provide the necessary support for the gate opener assembly. An alternative embodiment accommodates nontraditional configured gates. Installation of the gate opener assembly is performed by do-it-yourselfers in minimal time.

A system for guiding and supporting a leaf of a platform-access door capable of moving relative to a fixed panel in a horizontal translational movement in a plane of the leaf between open and closed positions, includes a rail extending in a direction of the horizontal translational movement, a first set of rollers collaborating with the rail with and being made up of: a main roller in contact with a lower bearing surface of the rail; first and second secondary rollers which are vertically offset from one another and are respectively in contact with the lower bearing surface and with an upper bearing surface of the rail and are spaced from the main roller.

A gate opener assembly is comprised of a gate and an anchor assembly having a platform. A plurality of track assemblies on the platform provide a track on which the gate may slide from a first position (closed) to a second position (open) and any position in between. A guidepost having a “Shepherd's hook” configuration guides the gate as the gate passes therethrough. A pair of rollers within the interior of the top of the guidepost makes continuous contact with each side of the top of the gate both while the gate is stationary and in motion. A gate opener controller contains the required electrical connections to fully the operate gate opener assembly. Subterrain anchor supports provide the necessary support for the gate opener assembly. An alternative embodiment accommodates nontraditional configured gates. Installation of the gate opener assembly is performed by do-it-yourselfers in minimal time.

A roller facilitates movement of a gate or similar barrier between a first and second position. The barrier fits at least generally within a channel formed at the periphery of the roller, and the channel is shaped to reduce the contact area and resulting friction that can otherwise occur between the confronting surfaces of the channel and the barrier.

A connecting device connects between the open ends of tubes of two adjacent frames within a cantilevered structure. The device is a bridging apparatus having opposing first and second portions received within the open ends of the tubes. First and second sets of circumferentially spaced fasteners bores in respective first and second portions of the bridging apparatus align with bores in the tubes so that fasteners threaded into the fastener bores clamp the first and second portions against corresponding inner surfaces of the tubes at each fastener location. In this manner, the fasteners in both tubes are oriented in different radial directions such that the bridging apparatus is better suited to bracing adjacent frame sections in a cantilevered structure such as a gate panel against a variety of different loads from different directions, including wind loads and the like.

A pre-assembled gate opener assembly is comprised of a gate and an anchor assembly having a platform. A plurality of track assemblies on the platform provide a track on which the gate may slide from a first position (closed) to a second position (open) and any position in between. A guidepost having a Shepherd's hook configuration guides the gate as the gate passes therethrough. A pair of rollers within the interior of the top of the guidepost makes continuous contact with each side of the top of the gate both while the gate is stationary and in motion. A gate opener controller contains the required electrical connections to fully the operate gate opener assembly. Subterrain anchor supports provide the necessary support for the gate opener assembly. An alternative embodiment accommodates nontraditional configured gates. Installation of the gate opener assembly is performed by do-it-yourselfers in minimal time.

A platform screen gate system having a tower, a gate secured to the tower. The gate is movable between an open position, to facilitate access to and from the platform, and a closed position, to block access to and from the platform. The system further includes at least one roller secured to the tower and a track secured to the gate. The track is supported by and movable on the least one roller such that the gate cantilevers from the tower and remains above the platform when the gate is moved between the open and closed positions.

A system for guiding and supporting a leaf of a platform-access door capable of moving relative to a fixed panel in a horizontal translational movement in a plane of the leaf between open and closed positions, includes a rail extending in a direction of the horizontal translational movement, a first set of rollers collaborating with the rail, for guiding and supporting it, with an axis of rotation perpendicular to the plane of the leaf and being made up of: a main roller in contact with a lower bearing surface of the rail; first and second secondary rollers which are offset from one another in at least a vertical direction and respectively in contact with the lower bearing surface and with an upper bearing surface of the rail and positioned some distance away from the main roller in the direction of a transition from the closed position into the open position.

A trolley assembly comprises a frame incorporating at least one tire encompassing a wheel bearing and a bumper comprising a first portion made of a comparably incompressible material and a second portion made of a comparably compressible material. The bumper is mounted on the frame such that the bumper moves upon impact with an object, compressing the compressible material. For example, the incompressible material may be a polyamide and the compressible material may be a neoprene extrusion.