Patent ID: 7647936
Filing Date: 2010-01-19
Classification: A45B

Abstract:
1. A runner assembly for use in an umbrella frame which includes a central shaft that is elongated along an axis in an axial direction, and that has an engaging surface facing upwardly, and a stretcher unit disposed to move a rib unit of the umbrella frame between partially and fully spread positions, said runner assembly comprising: a tubular runner adapted to be slidably sleeved on the central shaft, and including a tubular retaining block which is adapted to surround the central shaft in said accommodation space, and which is configured to be guidingly movable along said guideway between first and second positions, said tubular retaining block including a tubular thrust member having an inner sleeve surface which is disposed to surround said retaining block, and which is configured to be movable relative to said tubular runner and said tubular retaining block between an actuating position, where said tubular thrust member is close to said upper tubular end, and a releasing position, where said tubular thrust member is remote from said upper tubular end, said inner sleeve surface including a retaining member disposed on said inner trailing surface such that, when said tubular retaining block is displaced to the second position, said retaining member is brought into engagement with the engaging surface so as to be retained therewith, thereby guarding against movement of the rib unit away from the fully spread position.