Abstract: An improved guide rail arrangement especially adaptable for vehicle power seats includes a pair of interleavable guide rail assemblies that are individually bolted to the vehicle seat and to the vehicle floor. The fixed guide rail assembly includes a C-shaped member extending upwardly into a guiding space that is formed between the parallel, downwardly projecting legs of a pair of U-shaped rail elements forming the movable rail assembly. A plurality of spaced, horizontally disposed alignable apertures are respectively incorporated in adjacent legs on one transverse side of the interleaved guide rail assemblies. Horizontal movement of the movable rail assembly with respect to the stationary assembly is stopped in a novel way by incorporating a pair of blocking plates symmetrically supported on transversely opposite sides of the longitudinal axis of rail movement.

Abstract: An umbrella including a shortenable frame having dome ribs and a crown at the end of a stick. A cover is supported by the dome ribs and is attached to the crown and peripherally to the ends of the dome ribs. The cover is also attached to the dome ribs at intermediate points between the ends of the dome ribs and the crown. The cover includes a plurality of radially extending stiffened areas including a flexible hinge area at a position such that each radially extending stiffened portion is separated into at least two radially aligned portions whereby the cover material can fold therebetween. The full extent of the radially extending stiffened areas is provided on the portion of the cover between the crown and the intermediate attachment points.