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US 5,842,493 AGranted
Windproof umbrella having an improved rib linkage system
OwnerMichael J. Yakubisininventor
Life of this patent
Estimating the term…
Abstract
A windproof umbrella having an improved rib linkage system which is effective for providing support for an umbrella canopy during normal operating conditions, which is capable of restoring the umbrella to a normal open water-shielding configuration after the canopy has been inverted by strong wind or a gust, which is relatively easy to operate, relatively inexpensive to manufacture, and which has relatively good reliability for use during periods of sustained winds or gusts.
Claims11
A windproof umbrella comprising:
- a main support shaft having a runner slidably mounted thereon;
- a flexible canopy;
- and
- a rib linkage system;
- wherein said rib linkage system comprises:
- a joint member;
- an outer main rib fixedly secured to said joint member;
- a stretcher rib having an inner end pivotally connected to said runner and an outer end pivotally connected to said joint member;
- a support rib pivotally connected to said main support shaft and pivotally connected to said stretcher rib;
- and
- a flexing member pivotally connected to said support rib and pivotally connected to said joint member such that when the canopy has been inverted the flexing member is bowed upwardly towards the canopy.
8 more elements
A windproof umbrella comprising:
- a main support shaft having a runner slidably mounted thereon;
- a flexible canopy;
- a joint member;
- an outer main rib fixedly secured to said joint member;
- a stretcher rib having an inner end pivotally connected to said runner and an outer end pivotally connected to said joint member;
- a support rib pivotally connected to said main support shaft and pivotally connected to said stretcher rib;
- and
- a flexing member pivotally connected to said support rib and pivotally connected to said joint member;
- wherein when the umbrella is in an upwardly bowed inverted configuration, said joint member is rotated downwardly away from said canopy into contact with said stretcher rib to cause said stretcher rib to bow in a downward direction away from said canopy and to cause said flexing member to bow in an upward direction towards said canopy.
6 more elements
Dependencies are inferred from the claim text.