US 11,896,096 B2
Ball joint base and twist lock for slideable concentric members adapted for use in umbrellas with extensible canopy ribs
David L LeAnna, Thompsons Station, TN (US)
Assigned to USEITT, LLC, Pinecrest, FL (US)
Filed by David L LeAnna, Thompsons Station, TN (US)
Filed on Nov. 25, 2020, as Appl. No. 17/247,064.
Application 17/247,064 is a continuation in part of application No. 16/386,252, filed on Apr. 16, 2019, abandoned.
Claims priority of provisional application 62/658,466, filed on Apr. 16, 2018.
Prior Publication US 2021/0076790 A1, Mar. 18, 2021
Int. Cl. A45B 19/04 (2006.01); A45B 25/08 (2006.01); F16M 11/14 (2006.01); A45B 17/00 (2006.01)
CPC A45B 25/08 (2013.01) [A45B 17/00 (2013.01); F16M 11/14 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An umbrella comprising:
a canopy supported by a plurality of ribs;
an upper pole having an upper end carrying the canopy;
a lower pole having a lower end connected to a base, said upper pole and lower pole being concentric sliding members interfitting concentrically in a slidable fashion;
stretchers extending outward from the upper pole and supporting a plurality of ribs; and
a twist lock for engaging concentric sliding members;
wherein the twist lock comprises a mechanism on a first exterior member having:
a top cap threaded on the interior to receive a bottom cap threaded on the exterior and having a downward facing normal interior surface and downward facing inclined interior surface;
a base support received within the top cap having an upward facing normal surface below the downward facing inclined interior surface and upward facing inclined surface below the downward facing normal interior surface;
a lock ring biased to a normal position intermediate the upward and downward facing surfaces;
a longitudinally moveable post extendable through the upward facing normal surface; and
the bottom cap having an upward facing portion that restrains and pushes on a base of the post.