Tent – canopy – umbrella – or cane – Umbrella – Runners and notches
Reexamination Certificate
2007-02-20
2007-02-20
Yip, Winnie (Department: 3636)
Tent, canopy, umbrella, or cane
Umbrella
Runners and notches
C135S030000, C135S135000, C403S218000, C403S170000
Reexamination Certificate
active
10921688
ABSTRACT:
An improved umbrella includes a durable hub including a number of spherical rotating joint knuckles captured in a hub body. The joint knuckles provide rotational movement of rib and spreader elements which support a flexible umbrella cover. The joint knuckles provide increased bearing surface area that increases ease of use and durability. The hub design enables identical hub bodies to be used for a spreader hub and a rib hub.
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Hollimon William H.
Yip Winnie
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