Tent – canopy – umbrella – or cane – Umbrella – Rib and stretcher joints
Patent
1997-10-09
1999-11-02
Canfield, Robert
Tent, canopy, umbrella, or cane
Umbrella
Rib and stretcher joints
135 31, A45B 2500
Patent
active
059750995
ABSTRACT:
A foldable umbrella includes a post; a stationary hub secured to an upper end of the post; a canopy centrally secured to the stationary hub; a sleeve slidably mounted on the post; a plurality of radially oriented ribs secured to the canopy in equiangularly spaced relation, each rib having a radially inner end and a radially outward end; a plurality of foldable strut assemblies, each strut assembly connected between the sleeve and a respective one of the ribs, each strut assembly including a first strut having one end pivotally connected at a first pivot point to the sleeve and a second end pivotally connected to a respective one of the ribs at a second pivot point spaced radially outwardly from the radially inner end of the rib, a second strut having one end pivotally connected at a third pivot point to the stationary hub and a second end pivotally connected at a fourth pivot point to an intermediate point of the first strut, and a third strut having one end pivotally connected at a fifth pivot point to an intermediate point of the second strut and a second end pivotally connected at a sixth pivot point to the respective one of the ribs, the sixth pivot point being positioned radially inward of the second pivot point; and a U-shaped channel mounted to each rib for receiving the first strut therein when the umbrella is in an open configuration.
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Hochfeld, deceased Stanley
Holloway Frank
Johnson Gary D.
Murcia Alfonso
Canfield Robert
Innoventions Enterprises Ltd.
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