Abstract: 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.

Abstract: A magnetic gate latch comprises magnetic materials and a latching mechanism attracted into a keeper when the gate latch is closed by a first magnetic force and retained in a unlatched position by a second magnetic force. For example, the latching mechanism comprises a pin without a spring or other biasing mechanism biasing the spring in a direction opposite of a magnet in the keeper assembly. In one example, the pin comprises a magnet on an end of the pin opposite from the keeper assembly, which is attracted toward a ferromagnetic material when the pin is retracted into the housing.

Abstract: A magnetic gate latch comprises magnetic materials and a latching mechanism attracted into a keeper when the gate latch is closed by a first magnetic force and retained in a unlatched position by a second magnetic force. For example, the latching mechanism comprises a pin without a spring or other biasing mechanism biasing the spring in a direction opposite of a magnet in the keeper assembly. In one example, the pin comprises a magnet on an end of the pin opposite from the keeper assembly, which is attracted toward a ferromagnetic material when the pin is retracted into the housing.

Abstract: A fixative device for a decorative finial capable of being press fit onto a picket or post includes a pair of contact tabs arranged to bridge across a bend or corner formed by the inner surface of the free end of a tubular picket or post. A fit may be provided by a channel and protrusion or o-ring. A plurality of contact tabs, each having two contact surfaces may accommodate manufacturing defects and variations in the wall thickness of tubular, extruded posts.