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US 11,896,096 B2Granted
Ball joint base and twist lock for slideable concentric members adapted for use in umbrellas with extensible canopy ribs
AssigneeUseitt, LLC
InventorDavid L LeAnna
Life of this patent
Estimating the term…
Abstract
A twist lock mechanism for easily achieving a secure locking relationship between an outer member and an inner member is provided for use on an umbrella with a ball-joint based for adaptive orientation, and a spike receiving base or anchoring base mechanism.
Claims13
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.
10 more elements
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 first and second 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;
- the lower end of the lower pole comprising a ball stud having a generally spherical end and a longitudinally protruding stud;
- wherein the base has a ball sleeve with a spherical surface receiving the spherical end of the ball stud and
- wherein the twist lock comprises a housing with an inner fitting split wedge collar associated with first concentric sliding member and a threaded shim with an interior angled surface positioned interior the housing and over the split wedge collar, said threaded shim being connected with second concentric sliding member.
6 more elements
Dependencies are inferred from the claim text.