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David Sarnoff, American radio pioneer ; 1921
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| Number | Title | Issue Date |
| 7836903 | Dual folded umbrella A beach umbrella with improved sturdiness, durability and ability to keep the shading size maximized, but weight of the structure to the minimum is disclosed. The umbrella may include a poll member, an upper ring member at substantially the top of the poll member, a... | 11/23/2010 |
| 7350530 | Asymmetric umbrella An umbrella that includes a canopy, a shaft eccentrically disposed beneath the canopy, a runner slidably mounted on the shaft and slidable between a first position, in which the canopy is collapsed, and a second position, in which the canopy is extended, and rib ass... | 04/01/2008 |
| 7254869 | Hinge coupling Disclosed is a hinge coupling comprising a first connective section comprising a hollow first cylinder at one end with a first piece fastened therein, two parallel projections at the other end, each projection having a bent end, a bore in an intermediate portion ope... | 08/14/2007 |
| 7246629 | Beach umbrella One embodiment of a beach umbrella comprises a telescopic shank and a folding radial frame including ribs each including a first segment, a second segment, and a hinge pivotably interconnecting the segments, and spreaders each having one end pivotably connected to t... | 07/24/2007 |
| 6863081 | Wind-proof umbrella rib structure A wind-proof umbrella rib structure comprises a main rib, a plurality of sub-ribs and an umbrella cloth. An annular upper nest is at a top of the main rib and a lower nest is at a middle section of the main rib. Each sub-rib includes an upper rib, a lower rib, a ten... | 03/08/2005 |
| 6834659 | Rib assembly for multi-foldable umbrella The rib assembly for multi-foldable umbrella includes an inner rib, a middle rib, an outer rib and a secondary rib. Wherein, the secondary rib and the front strut are solid shafts and the pivot joint of the secondary rib and the inner rib is not necessitated to be f... | 12/28/2004 |
| 6758228 | Tri-folded umbrella A tri-folded umbrella is disclosed. An enhanced frame of the umbrella comprises pivotably coupled first, second, and third yoke-shaped pivot members formed of plastic, first, second, and third latches, first, second, third ribs, first and second links, and a stretch... | 07/06/2004 |
| 6474352 | Wind-proof umbrella A wind-proof umbrella has secondary ribs pivotally connected with second linking ribs and having a flexibility the same as that of flexible ribs that are mounted between second joints on the second linking ribs and third joints on the outer supporting rib... | 11/05/2002 |
| 6336464 | Stretcher structure used for collapsible two-layer canopy wind resistant umbrellas An innovative stretcher structure used for collapsible two-layer canopy wind resistant umbrellas primarily uses a connection block in conjunction with two staggered curved portions each formed on a main tail plate and a secondary tail plate to enhance the... | 01/08/2002 |
| 6230727 | Collapsible canopy A collapsible canopy which may be used to supply shelter from sun and rain for outdoor activities is provided and includes a post, a slide bracket slideably received on the post and a scissor assembly connected to the post and the bracket, respectively, a... | 05/15/2001 |
| 6158452 | Auto-opening umbrella An auto-opening mechanism can make the pivotal coupling between the supporting ribs and the linkage beams highly firm and secure while nonetheless retaining the light-weighted quality of the supporting ribs The folding frame structure is more durable than... | 12/12/2000 |
| 6039063 | Multiple-fold windproof umbrella for preventing sagging of umbrella cloth A multiple-fold windproof umbrella includes: a central shaft having a rib assembly pivotally secured to the central shaft, a lower cloth having an anti-sagging band fastened on an upper periphery of the lower cloth and secured to the rib assembly, an uppe... | 03/21/2000 |
| 5823213 | Combination purse and umbrella The combination of an umbrella and purse comprising a main mast, a flexible umbrella frame operatively arranged at one end of the mast, means to maintain the flexible frame of the umbrella in spaced apart stand-off relation with respect to the main mast w... | 10/20/1998 |
| 5640984 | Special fold-up umbrella having rib and frame design for easier opening and closing of umbrella, and two canopies designed to stabilize the ribs and vent the air A garden umbrella employing an upper canopy extending from the top of the umbrella pole to the middle of long canopy ribs, and a lower outer canopy extending in a ring around the outer part of the umbrella and having long sleeves sewn across the canopy in... | 06/24/1997 |
| 5505221 | Umbrella with off-center support An umbrella with an off-center support shaft an umbrella canopy has an elongated shape, which is symmetrical along a central plane. Support ribs of two separate types are provided to simultaneously raise and lower the asymmetric ends of the canopy. Shorte... | 04/09/1996 |
| 5370144 | Multiple-fold mini umbrella with centralized retraction A multiple-fold mini umbrella includes: a telescopic central shaft, and at least a top rib pivotally secured to an upper notch formed on a top end of the central shaft, a stretcher rib pivotally connected between each top rib and a middle runner, and an a... | 12/06/1994 |
| 5307827 | Umbrella The present invention includes an umbrella which converts to at least two separate canopy configurations. The umbrella has a closed position, from which it can be opened and latched into at least one middle position. Such a middle position can be used as ... | 05/03/1994 |
| 5305770 | Outdoor umbrella An umbrella which opens into a noteworthy enlarged expanse due to outer fabric-supporting struts being urged through sliding movement along inner fabric-supporting struts, so that the two fabrics cooperate to provide the enlarged expanse to the umbrella.... | 04/26/1994 |
| 5201332 | Cap-shaped umbrella held to the head A cap-shaped umbrella for carrying on the head, comprising a folding radial frame, an auxiliary folding frame pivoted to said folding radial frame, an umbrella cover stretched over said folding radial frame, a front visor connected to the peripheral edge ... | 04/13/1993 |
| 4838290 | Slimly-folded umbrella having extendible brim portion An umbrella includes a plurality of main links for securing an umbrella cloth and several shortened links each pivotally connected with a tail link which is operatively suspended horizontally to a stretcher link by a supporting link when opening an umbrel... | 06/13/1989 |
| 4007752 | Telescopic umbrella A telescopic umbrella is provided; the umbrella has a telescoping umbrella stick, with a runner sliding thereon with stretchers running from the slide; at the outer ends of the stretchers are dome ribs, above each of which is located an auxiliary link run... | 02/15/1977 |