Patents by Inventor Tsun-Zong Wu

Tsun-Zong Wu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6588439
    Abstract: A wind-protecting skeleton for folding umbrella is characterized in a rib-pulling mechanism mounted between each stretcher and each corresponding outer rib of the umbrella. The rib-pulling mechanism includes a flexible pull cord having an inner knotted end connected to a predetermined position on the stretcher and an outer knotted end movably connected to an eye at an inner end of a rigid wire. An eye at an outer end of the rigid wire is pivotally connected to a coupling device fixedly connected to a predetermined position on the outer rib. When the umbrella is stretched, the flexible pull cord and the rigid wire together pull the outer rib inward to protect the same from turning upward or breaking due to a strong wind force against an inner side of the umbrella.
    Type: Grant
    Filed: July 6, 2001
    Date of Patent: July 8, 2003
    Inventor: Tsun-Zong Wu
  • Publication number: 20030005951
    Abstract: A wind-protecting skeleton for folding umbrella is characterized in a rib-pulling mechanism mounted between each stretcher and each corresponding outer rib of the umbrella. The rib-pulling mechanism includes a flexible pull cord having an inner knotted end connected to a predetermined position on the stretcher and an outer knotted end movably connected to an eye at an inner end of a rigid wire. An eye at an outer end of the rigid wire is pivotally connected to a coupling device fixedly connected to a predetermined position on the outer rib. When the umbrella is stretched, the flexible pull cord and the rigid wire together pull the outer rib inward to protect the same from turning upward or breaking due to a strong wind force against an inner side of the umbrella.
    Type: Application
    Filed: July 6, 2001
    Publication date: January 9, 2003
    Inventor: Tsun-Zong Wu
  • Patent number: 6371686
    Abstract: An improved central shaft for collapsible umbrella includes a plurality of telescopic tubes. Each pair of adjacent tubes are overlapped and engaged by a circular perimeter section and a flat indent plane, or a flat indent plane and an inside concave section formed at the ends of the tube. The overlapped engagement sections of the tube may be made at a selected length desired to obtain strong engagement strength. The tube number may be increased to five so that each tube may be shorter to make the umbrella compact and convenient to carry and use.
    Type: Grant
    Filed: June 28, 2000
    Date of Patent: April 16, 2002
    Inventor: Tsun-Zong Wu
  • Patent number: 6192907
    Abstract: A safety umbrella runner includes: a ferrule adapted for winding a fastening wire thereon for pivotally connecting umbrella stretcher ribs on the wire, and circumferentially formed on a runner tube slidably held on a central shaft of the umbrella; a safety tab resiliently secured to a lower rim of the runner tube having a lower convex portion protruding outwardly from the safety tab adapted for a depression of a user's finger for an ergonomic downward pulling of the runner when closing and folding the umbrella; a visor extension integrally formed on the ferrule and positioned above the safety tab to be upwardly pushed by the user's finger for opening the umbrella; and a clamp portion integrally formed on the runner tube and positioned above the visor extension, whereby upon laying-down of a lever-like tool on the visor extension and upon an upward bending of the wire ends of the fastening wire by biasing the lever-like tool against the visor extension, the wire ends of the fastening wire will be eas
    Type: Grant
    Filed: May 1, 1999
    Date of Patent: February 27, 2001
    Inventor: Tsun-Zong Wu
  • Patent number: 6158451
    Abstract: A lamp device includes: an illuminator selected from a light-emitting diode (LED), a bulb and any other lamps electrically connected with a power source of batteries and a switch as stored in an adapter casing, which is detachably securable or attachable on an umbrella top end portion, thereby enabling an umbrella to be illuminated in an easy, convenient and selective way.
    Type: Grant
    Filed: May 7, 1999
    Date of Patent: December 12, 2000
    Inventor: Tsun-Zong Wu
  • Patent number: 6126293
    Abstract: An illuminating umbrella includes a top illuminator fixed on a top end of an umbrella central shaft, a plurality of tip illuminators respectively fixed on a plurality of tips of the umbrella ribs of two or multiple folds; each illuminator having a positive wire electrically connected to a positive conducting ring secured on an upper notch of the central shaft, and having a negative wire electrically connected to a negative conducting ring formed on the upper notch of the central shaft, with the positive conducting ring electrically connected to a positive pole of a power source, and the negative conducting ring electrically connected to the negative pole of the power source through an on-off switch, having a safely protected and reliably connected electrical circuit provided among the illuminators and the power source; and a flasher connected between the power source and the illuminators for flashing the illuminators.
    Type: Grant
    Filed: May 17, 1999
    Date of Patent: October 3, 2000
    Inventor: Tsun-Zong Wu
  • Patent number: 5855220
    Abstract: A flattened folding umbrella, having two sets of terminal rib devices and four sets of side rib devices, each rib device comprising of inside main rib, middle main rib, outside main rib, branch rib, inside connecting rib, middle connecting rib, middle joint, and outside joint that are mutually joined together, wherein each set of terminal rib device is formed by compressing an appropriate location of the originally U-shaped groove of the branch rib to form a stop of narrow-opening groove to prevent the inside connecting rib that is joined to said branch rib from being accommodated in said branch rib, so that when the umbrella is folded, relatively the outside terminal of said inside connecting rib and its connected middle joint are inclining slightly outwardly; besides, the outside terminal of said inside connecting rib is also designed to have a larger outward inclining obtuse angle, or an appropriate location of the U-shaped groove of the middle main rib is compressed to form a stop of narrow-opening groove
    Type: Grant
    Filed: August 1, 1997
    Date of Patent: January 5, 1999
    Inventor: Tsun-Zong Wu
  • Patent number: 5842494
    Abstract: The present invention relates to the presentation of an improved structure of umbrella's upper notch and ferrule, comprising mainly an inner flange tube with an appropriate length at the top of an umbrella's upper notch, two opposite walls of said inner flange tube has the flexibility to shrink inward and expand outward, thus forming two resilient walls, the ferrule involves a cap body, in the cap body corresponding to the inner flange tube of the upper notch is a solid connector post, on the end of the connector post corresponding to the two opposite resilient walls of the inner flange tube is an expanded ratchet head portion; when the connector post of said ferrule has penetrated the fabric top and through the upper notch's inner flange tube and reached its position, the ratchet head portion at the end of said connector post will naturally be tightly secured to the ends of the inner flange tube's resilient walls, to prevent the ferrule from falling off, and to clamp the fabric top between the ferrule and th
    Type: Grant
    Filed: October 31, 1997
    Date of Patent: December 1, 1998
    Inventor: Tsun-Zong Wu
  • Patent number: 5758678
    Abstract: An umbrella top structure includes an upper notch secured on a top portion of a central shaft, a top cap member engaged with the upper notch for fastening a central crimped portion of an umbrella cloth in between the top cap member and the upper notch as packed by a packing washer, with the top cap member having a plurality of ratchet teeth juxtapositionally formed on the cap member and the upper notch having an annular hook portion formed in an upper portion of the upper notch, whereby upon the engagement of the ratchet tooth of the cap member with the annular hook portion of the upper notch the cap member will not be loosened from the upper notch to thereby stabilize the fastening of the umbrella cloth on the top of the central shaft.
    Type: Grant
    Filed: May 9, 1997
    Date of Patent: June 2, 1998
    Inventor: Tsun-Zong Wu
  • Patent number: 5515878
    Abstract: An umbrella includes: a central shaft having an upper engaging sleeve member generally cylindrically shaped formed on an upper portion of the shaft and a lower engaging sleeve member generally cylindrically shaped formed on a lower portion of the shaft, and a C-shaped retaining ring expansibly held in a runner which is pivotally secured with a stretcher rib pivotally connected to a top rib pivotally secured to an upper notch formed on a top portion of the umbrella, whereby upon an upward movement of the runner to extend the stretcher rib and top rib for opening the umbrella and upon an expansion of the C-shaped ring to be retained on the upper engaging sleeve member, the umbrella will be opened steadily; and upon a folding of the ribs by lowering the runner and upon the expansion of the C-shaped ring to be retained on the lower engaging sleeve member, the umbrella will be closed steadily.
    Type: Grant
    Filed: February 24, 1995
    Date of Patent: May 14, 1996
    Inventor: Tsun-Zong Wu
  • Patent number: 5385162
    Abstract: An umbrella includes a plurality of telescopic sleeves telescopically extendibly and retractibly mounted on an umbrella shaft covered with umbrella cloth, a water collector secured on a tip portion of the umbrella communicating with interior of the telescopic sleeves for collecting rain water drained from the umbrella cloth, and a drain valve slidably held on the water collector and operatively pushed by an innermost or smallest sleeve for automatically closing a plurality of drain holes formed in a lower portion of the water collector to prevent unexpected dripping of the rain water as stored in the collector for hygienic purpose.
    Type: Grant
    Filed: November 8, 1993
    Date of Patent: January 31, 1995
    Inventor: Tsun-Zong Wu
  • Patent number: 5224505
    Abstract: An automatic umbrella includes: a central shaft, a plurality of umbrella ribs, an umbrella-opening spring, an umbrella-closing spring, and a control device having a push button which may be pushed upwardly for opening the umbrella and may be pushed downwardly for closing the umbrella for preventing a confusing or false operation when extending or folding the umbrella.
    Type: Grant
    Filed: September 8, 1992
    Date of Patent: July 6, 1993
    Assignee: Fu Tai Umbrella Works, Ltd.
    Inventor: Tsun-Zong Wu
  • Patent number: 5125426
    Abstract: An umbrella includes a shaft restoring spring provided in a central shaft of the umbrella which will store its elastic force when opening the umbrella and extendig the shaft so that upon a depression of a closing controller formed on a grip of the umbrella, the shaft restoring spring will restore to retract the shaft in order to quickly close the umbrella as assisted by a rib restoring spring which restores to close the umbrella ribs.
    Type: Grant
    Filed: August 7, 1991
    Date of Patent: June 30, 1992
    Inventors: Tsun-Zong Wu, Chung K. Lin
  • Patent number: 5121764
    Abstract: An umbrella includes a plurality of top ribs pivotally secured to a notch formed on an upper end of a central shaft and a plurality of stretcher ribs each pivotally secured between each top rib and a runner slidably held on the central shaft, each top rib being embedded with a reinforcing core rod for strengthening the top rib in order to resist an external force acting upon an umbrella cloth secured on the top ribs.
    Type: Grant
    Filed: January 29, 1991
    Date of Patent: June 16, 1992
    Assignee: Fu Tai Umbrella Works, Ltd.
    Inventor: Tsun-Zong Wu
  • Patent number: 5078165
    Abstract: An automatic umbrella includes: a central shaft having an upper shaft telescopically mounted on a lower shaft secured in a grip, a rib assembly pivotally secured to the central shaft, an extending spring for extending the ribs and opening the umbrella, a retraction restoring spring for closing the umbrella, and a straightforward push button resiliently retained in said grip which may be straightforwardly depressed to actuate an opening controller for opening the umbrella conveniently, and may also be further depressed straightforwardly to actuate a closing controller for easily closing the umbrella, without the need for selectively depressing a specific location on a push button.
    Type: Grant
    Filed: February 15, 1991
    Date of Patent: January 7, 1992
    Assignee: Fu Tai Umbrella Works, Ltd.
    Inventor: Tsun-Zong Wu
  • Patent number: 5060684
    Abstract: An automatic umbrella includes a plurality of ribs respectively pivotally secured to a plurality of ferrules respectively mounted or held on a telescopic central shaft, an opening tensioning spring formed in the central shaft for opening the umbrella, at least a retraction restoring spring for closing the umbrella, and a tip cap slidably mounted on a grip, in which the tip cap may be operated for depressing a biasing lever for disengaging a lower ferrule pivotally linked with the ribs for opening the umbrella, and may be further operated for depressing a sliding latch for releasing an elastic force of the opening tensioning spring to allow a restoring operation acted by the retraction restoring springs for closing the umbrella from its opening state.
    Type: Grant
    Filed: September 10, 1990
    Date of Patent: October 29, 1991
    Inventor: Tsun-Zong Wu
  • Patent number: 4989625
    Abstract: An automatic umbrella includes a plurality of ribs respectively pivotally secured to a plurality of ferrules respectively mounted or held on a telescopic central shaft, an opening tensioning spring formed in the central shaft for opening the umbrella, and at least a retraction restoring spring for closing the umbrella, in which a lower ferrule pivotally connecting one of the ribs is engageable with a hook portion of a controller formed in the grip when closing the umbrella for stably retaining the umbrella ribs especially when folded.
    Type: Grant
    Filed: September 7, 1990
    Date of Patent: February 5, 1991
    Inventor: Tsun-Zong Wu
  • Patent number: 4986294
    Abstract: An automatic umbrella includes a retraction restoring spring having an outer spring end contracted to form a narrow spring portion to be embedded in a concavely depressed stretcher rib and having an inner spring end secured to a top rib of a rib assembly for holding an umbrella cloth for smoothly developing the restoring spring force, and an extending spring formed in the central tubular shaft having an upper spring portion having larger spring diameter to be telescopically held in an upper shaft having larger diameter and a lower spring portion having smaller spring diameter than the upper spring portion to be telecopically held in a lower shaft, thereby causing a smooth tensioning or compression of the extending spring in the upper shaft and the lower shaft when extending or retracting the central tubular shaft.
    Type: Grant
    Filed: June 18, 1990
    Date of Patent: January 22, 1991
    Inventor: Tsun-Zong Wu
  • Patent number: 4941494
    Abstract: An automatic umbrella includes: a central shaft having an upper shaft telescopically mounted on a lower shaft, a rib assembly having at least a top rib and a stretcher rib supporting the top rib, an elongate extending spring inserted inside the central shaft which may be lightly operated for resetting the umbrella for restoring its elastic force for extending the shafts, the ribs and the umbrella, a plurality of restoring springs each secured in said rib assembly for normally urging and retracting the ribs, and a seesaw button seesawly formed in a grip of the shaft for selectively extending the shaft, the ribs for opening the umbrella, or for retracting the ribs for closing the umbrella.
    Type: Grant
    Filed: October 23, 1989
    Date of Patent: July 17, 1990
    Inventor: Tsun-Zong Wu
  • Patent number: 4936332
    Abstract: An automatic umbrella includes: a central shaft having an upper shaft telescopically mounted on a lower shaft, a rib assembly having at least a top rib and a stretcher rib supporting the top rib, an elongate extending spring inserted inside the central shaft which may be lightly operated for resetting the umbrella for restoring its elastic force for extending the shafts, the ribs and the umbrella, a plurality of restoring springs each secured in said rib assembly for normally urging and retracting the ribs, and a seesaw button seesawly formed in a grip of the shaft for selectively extending the shaft, the ribs for opening the umbrella, or for retracting the ribs for closing the umbrella. The umbrella also includes a drag rod formed in the shafts having a locking head formed on a lower end of the rod to be locked by a retraction controller for preventing a false closing operation when opening the umbrella.
    Type: Grant
    Filed: October 23, 1989
    Date of Patent: June 26, 1990
    Inventor: Tsun-Zong Wu