Auto-opening umbrella with enhanced spreaders
OwnerChing-Chuan Youinventor
Life of this patent
Estimating the term…
Abstract
An enhanced frame of an auto-opening umbrella comprises hollow cylindrical intermediate joints with spreaders passed through and each including two spaced bottom lugs, a bar across the lugs, and a recess between the lugs. The bar is disposed less than half of a projected distance of the lug. A plurality of links has hooked ends pivotably coupled to a lower ring and the bar. Also, the recess is in communication with a hole of the joint. The outer hooked end of each link is sufficiently smaller than the recess so that ribs are spaced apart from the spreaders by a much smaller distance when the umbrella is folded. This can achieve a smooth folding operation and a more compact umbrella after folded.
Claims8
A frame of an auto-opening umbrella comprising:
- a shank including a slidable lower ring, a slidable intermediate ring both thereon, a stationary upper hub, and an elastic means biased between the intermediate and the lower rings;
- a rib assembly including a plurality of ribs;
- a spreader assembly including a plurality of spreaders, each of them being pivotably coupled to each of both the ribs and the intermediate ring;
- a plurality of links having an inner hooked end and an outer hooked end wherein each of the inner hooked ends is pivotably coupled to the lower ring;
- and
- a plurality of substantially hollow cylindrical intermediate joints each including a central through hole with the spreader passed through and fastened therein, two spaced downward extending bottom lugs, a bar being across the lugs;
- wherein the outer hooked end of each link is pivotably coupled to the bar.
Dependencies are inferred from the claim text.