Invention Grant
- Patent Title: Hubs for shade structures
- Patent Title (中): 遮阳结构的轮毂
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Application No.: US11850640Application Date: 2007-09-05
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Publication No.: US07900643B2Publication Date: 2011-03-08
- Inventor: Oliver Joen-an Ma
- Applicant: Oliver Joen-an Ma
- Agency: Knobbe, Martens, Olson & Bear, LLP
- Main IPC: A45B25/02
- IPC: A45B25/02

Abstract:
An umbrella is provided that comprises a pole, ribs, an uppermost hub, a hub below the uppermost hub, and at least one handle. The hub below the uppermost hub comprises a first hub component and a second hub component each comprising alternating recesses and projections extending substantially radially with respect to the longitudinal axis of the pole and being configured to receive ribs of the umbrella. The handle can be operably connectable with the uppermost hub and the second hub component, and downward movement of the handle causes downward movement of the uppermost hub and the upward movement of ends of a first plurality of ribs. Further, upward movement of the second hub component causes upward movement of ends of the second plurality of ribs relative to the ends of the first plurality of ribs to modify a profile of the canopy.
Public/Granted literature
- US20080066793A1 HUBS FOR SHADE STRUCTURES Public/Granted day:2008-03-20
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