US 8,607,808 B1Granted

Light windproof umbrella

OwnerChing-Chuan Youinventor

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Abstract

A light windproof umbrella is provided with a center post including a top ferrule, an upper grommet, an intermediate sliding ring, and a sliding runner under the sliding ring; ribs each having one end pivotably secured to the grommet and the other end being open; main joints each formed at a portion of the rib proximate to the other end of the rib; auxiliary joints each formed at a portion of the rib between the main joint and the grommet; stretchers each having one end pivotably secured to the sliding ring and the other end moveably secured to the rib; struts each having one end pivotably secured to the sliding runner and the other end pivotably secured to the auxiliary joint; a lower canopy; and an upper canopy in a partial covering relationship to the lower canopy.

Claims1

Dependent claims

A windproof umbrella comprising:

a center post (10) comprising a top ferrule (14), an upper grommet (11), an intermediate sliding ring (12) under the upper grommet (11), and a sliding runner (13) under the intermediate sliding ring (12);
a plurality of ribs (20) each having one end (21) pivotably secured to the upper grommet (11) and the other end (22) being open;
a plurality of main joints (51) each formed at a portion of the rib (20) proximate to the other end (22) of the rib (20);
a plurality of auxiliary joints (52) each formed at a portion of the rib (20) between the main joint (51) and the upper grommet (11);
a plurality of stretchers (30) each having one end (31) pivotably secured to the intermediate sliding ring (12) and the other end (32) moveably secured to the rib (20);
a plurality of struts (40) each having one end (41) pivotably secured to the sliding runner (13) and the other end (42) pivotably secured to the auxiliary joint (52);
a lower canopy (70) fastened in covering relationship to the main joints (51) and portions of the ribs (20) wherein an inner closed edge of the lower canopy (70) is secured to points of the ribs (20) proximate to the auxiliary joints (52) and not covering the auxiliary joints (52), and an outer peripheral edge thereof is secured to the other ends (22) of the ribs (20);
and
an upper canopy (80) having a center secured to the upper grommet (11) and an outer peripheral edge positioned over a portion of the inner peripheral edge of the lower canopy (70) and being in covering relationship to the auxiliary joints (52),
wherein each main joint (51) comprises a first tubular end (511) with the rib (20) passing through, a second tubular end (512) with the rib (20) passing through, a U-shaped bar (510) interconnecting the first and second tubular ends (511, 512), and a channel (513) defined by the U-shaped bar (510), the first and second tubular ends (511, 512), and a portion of the rib (20) between the first and second tubular ends (511, 512) so that the other end (32) of each stretcher (30) is moveably restrained in the channel (513) with its closed loop (321);
wherein each auxiliary joint (52) comprises a first tubular end (521) with the rib (20) passing through, a second tubular end (522) with the rib (20) passing through, a U-shaped bar (520) interconnecting the first and second tubular ends (521, 522), and a tunnel (523) defined by the U-shaped bar (520), the first and second tubular ends (521, 522), and a portion of the rib (20) between the first and second tubular ends (521, 522) so that the other end (42) of each strut (40) is pivotably fastened in the tunnel (523) with its closed loop (421);
and
wherein wind caught beneath the lower and upper canopies (70, 80) applies pressure to the lower and upper canopies (70, 80) to cause a portion of the upper canopy (80) to lift away from a corresponding portion of the lower canopy (70) to form a plurality of vent holes (71), slide the other ends (32) of the stretchers (30) toward a direction away from the center post (10), and slide the intermediate sliding ring (12) downward along the center post (10).

10 more elements

Dependencies are inferred from the claim text.

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Abstract

A windproof umbrella comprising:

a center post (10) comprising a top ferrule (14), an upper grommet (11), an intermediate sliding ring (12) under the upper grommet (11), and a sliding runner (13) under the intermediate sliding ring (12);
a plurality of ribs (20) each having one end (21) pivotably secured to the upper grommet (11) and the other end (22) being open;
a plurality of main joints (51) each formed at a portion of the rib (20) proximate to the other end (22) of the rib (20);
a plurality of auxiliary joints (52) each formed at a portion of the rib (20) between the main joint (51) and the upper grommet (11);
a plurality of stretchers (30) each having one end (31) pivotably secured to the intermediate sliding ring (12) and the other end (32) moveably secured to the rib (20);
a plurality of struts (40) each having one end (41) pivotably secured to the sliding runner (13) and the other end (42) pivotably secured to the auxiliary joint (52);
a lower canopy (70) fastened in covering relationship to the main joints (51) and portions of the ribs (20) wherein an inner closed edge of the lower canopy (70) is secured to points of the ribs (20) proximate to the auxiliary joints (52) and not covering the auxiliary joints (52), and an outer peripheral edge thereof is secured to the other ends (22) of the ribs (20);
and
an upper canopy (80) having a center secured to the upper grommet (11) and an outer peripheral edge positioned over a portion of the inner peripheral edge of the lower canopy (70) and being in covering relationship to the auxiliary joints (52),
wherein each main joint (51) comprises a first tubular end (511) with the rib (20) passing through, a second tubular end (512) with the rib (20) passing through, a U-shaped bar (510) interconnecting the first and second tubular ends (511, 512), and a channel (513) defined by the U-shaped bar (510), the first and second tubular ends (511, 512), and a portion of the rib (20) between the first and second tubular ends (511, 512) so that the other end (32) of each stretcher (30) is moveably restrained in the channel (513) with its closed loop (321);
wherein each auxiliary joint (52) comprises a first tubular end (521) with the rib (20) passing through, a second tubular end (522) with the rib (20) passing through, a U-shaped bar (520) interconnecting the first and second tubular ends (521, 522), and a tunnel (523) defined by the U-shaped bar (520), the first and second tubular ends (521, 522), and a portion of the rib (20) between the first and second tubular ends (521, 522) so that the other end (42) of each strut (40) is pivotably fastened in the tunnel (523) with its closed loop (421);
and
wherein wind caught beneath the lower and upper canopies (70, 80) applies pressure to the lower and upper canopies (70, 80) to cause a portion of the upper canopy (80) to lift away from a corresponding portion of the lower canopy (70) to form a plurality of vent holes (71), slide the other ends (32) of the stretchers (30) toward a direction away from the center post (10), and slide the intermediate sliding ring (12) downward along the center post (10).

10 more elements