Patent ID: 6769441
Filing Date: 2004-08-03
Classification: A45B

Abstract:
A fastening structure for an umbrella comprising:a) an upper nest; b) a lower nest having a inner through hole and at least one radial channel, the at least one radial channel extending inwardly from an outer periphery of the lower nest and communicating with the inner through hole; c) an umbrella post slidably inserted into the inner through hole of the lower nest and fixedly connected to the upper nest at a first end thereof; d) a plurality of outer main ribs; e) a plurality of strutting ribs, each of the plurality of strutting ribs pivotally connected at a first end to the lower nest and at a second end to one of the plurality of the outer main ribs; f) a plurality of inner main ribs, each of the plurality of inner ribs pivotally connected at a first end to the upper nest and at a second end to a middle portion of one of the plurality of strutting ribs; and g) at least one extending rod connected to a first end of one of the plurality of strutting ribs and inserted into the inner through hole of the lower nest through one of the at least one radial channel, the at least one extending rod releasably engaging the umbrella post.