Patents by Inventor Jung-Jen Chang

Jung-Jen Chang 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: 6024109
    Abstract: A windproof umbrella includes: an upper cloth secured on an upper rib pivotally connected to a central shaft of the umbrella, a lower cloth secured on a lower rib pivotally connected to the central shaft and having a central opening circumferentially formed in a top portion of the lower cloth around the central shaft, each upper cloth provided with a control valve thereon for resiliently normally closing an aperture between the upper cloth and the lower cloth; and upon blowing of strong wind on the lower and upper cloths, the control valve will be opened to release the wind for preventing inversion of the umbrella.
    Type: Grant
    Filed: August 3, 1998
    Date of Patent: February 15, 2000
    Assignee: Fu Tai Umbrella Works, Ltd.
    Inventors: Chung-Kuang Lin, Jung-Jen Chang
  • Patent number: 6016822
    Abstract: An automatic umbrella includes: a central shaft consisting of four tubes telescopically engageable with one another; a rib assembly consisting of at least a top rib pivotally secured to a top portion of the central shaft, a stretcher rib pivotally connected with the top rib and a lower runner slidably held on the central shaft, and several ribs pivotally connected to the top rib and the stretcher rib; an opening spring resiliently retained in the central shaft for opening the umbrella; a plurality of closing springs secured on the rib assembly for closing the umbrella; and a control device consisting of an upper roller rotatably mounted on an upper portion of the central shaft, a lower roller rotatably secured on the lower runner and an uppermost roller rotatably secured on a top portion of the shaft for continuously deflectively winding a rope of the control device on the rollers for making an automatic umbrella of quadruple folds or the like.
    Type: Grant
    Filed: May 1, 1998
    Date of Patent: January 25, 2000
    Assignee: Fu Tai Umbrella Works, Ltd.
    Inventors: Chung-Kung Lin, Jung-Jen Chang
  • Patent number: 6006770
    Abstract: A windproof umbrella includes: an upper cloth secured on an upper rib pivotally connected to a central shaft of the umbrella, a lower cloth secured on a lower rib pivotally connected to the central shaft and having a central opening circumferentially formed in a top portion of the lower cloth around the central shaft, each upper cloth provided with a control valve thereon for resiliently normally closing an aperture between the upper cloth and the lower cloth; and upon blowing of strong wind on the lower and upper cloths, the control valve will be opened to release the wind for preventing inversion of the umbrella.
    Type: Grant
    Filed: March 2, 1999
    Date of Patent: December 28, 1999
    Assignee: Fu Tai Umbrella Works, Ltd.
    Inventors: Chung-Kuang Lin, Jung-Jen Chang
  • Patent number: 5992433
    Abstract: A multiple-fold automatic umbrella includes: a control device having a ring-shape push button slidably held in the grip having an upper latch integrally formed on a ring portion of the push button which is engaged with a slot formed in a lower runner slidably held on a central shaft of the umbrella for locking the runner and central shaft at their folded state, and which is disengaged from the slot of the runner for opening the umbrella when depressing the push button; and an elongated cylinder of an anti-false operation safety device resiliently held in the grip having a lower latch resiliently formed on a lower portion of the cylinder for preventing unexpected depression on the lower latch and only after the umbrella is opened, the lower latch may then be actuated, upon depression of the push button, for closing the umbrella from an opened umbrella, thereby providing an automatically opening and closing umbrella with simplified structure and minimized elements for the control device of the umbrella.
    Type: Grant
    Filed: March 11, 1998
    Date of Patent: November 30, 1999
    Assignee: Fu Tai Umbrella Works, Ltd.
    Inventors: Lin Chung-Kuang, Jung-Jen Chang
  • Patent number: 5931175
    Abstract: An umbrella rib assembly includes: a top rib having a cross section of U shape and made of light material including aluminum alloy, an outer rib having a cross section of circular shape and made of composite or plastic materials having good resilience and mechanical strength to be connected at an outer end of the top rib, and a stretcher rib pivotally connected with the top rib, thereby providing an umbrella having light weight but having suitable resilience and strength.
    Type: Grant
    Filed: December 31, 1997
    Date of Patent: August 3, 1999
    Assignee: Fu Tai Umbrella Works, Ltd.
    Inventors: Chung-Kuang Lin, Jung-Jen Chang
  • Patent number: 5865200
    Abstract: A collapsible umbrella with a self-opening mechanism is provided. The collapsible umbrella includes a stretchable multi-segment shaft having a top end and a bottom end; an upper fixed hub mounted axially on the top end of the shaft, the upper fixed hub being formed with a plurality of alignment slots and a threaded hole, the threaded hole allowing a finishing cap of either an inner-threaded type or an outer-threaded type to be mounted thereon; a running hub slidably mounted on the shaft; a collapsible frame of a plurality of ribs including a set of upper ribs, a set of inner branch ribs, a set of middle branch ribs, a set of linkage ribs, and a set of outer branch ribs, wherein each of the middle branch ribs is formed with a substantially U-shaped cross section to form a slot and integrally formed with a retaining piece; a fabric held on the collapsible frame; and elastic means which allows the collapsed umbrella to be thereafter expanded in a self-opening manner.
    Type: Grant
    Filed: January 22, 1998
    Date of Patent: February 2, 1999
    Assignee: Fu Tai Umbrella Works, Ltd.
    Inventors: Lin Chung Kuang, Jung Jen Chang
  • Patent number: 5791359
    Abstract: An automatic umbrella includes: a central shaft (1) having a lower tube (11), a middle tube (13) and an upper tube (14) telescopically engageable with one another, an umbrella rib assembly (2) pivotally secured to the central shaft (1) and having an umbrella cloth (C) secured on the rib assembly (2), an opening spring (3) retained in the central shaft (1) for automatically opening the umbrella, a drag means (4) provided in the central shaft (1) through a lower runner (24) of the rib assembly (2) for pulling the lower runner (24) upwardly for extending the rib assembly (2) when opening the umbrella, and a control means (5) for controlling the automatic opening of the umbrella, wherein the tubes of the central shaft (1) are each made of light weight materials for lightening the weight of the umbrella and each tube having a cross section of concave hexagonal sides for reinforcing the strength of the tubes of the central shaft for a reliable umbrella opening operation.
    Type: Grant
    Filed: August 26, 1997
    Date of Patent: August 11, 1998
    Assignee: Fu Tai Umbrella Works, Ltd.
    Inventors: Chung-Kuang Lin, Jung-Jen Chang
  • Patent number: 5740823
    Abstract: An automatic umbrella includes: a central shaft having a lower tube and an upper tube telescopically engageable with each other, a rib assembly pivotally connected to the central shaft having a lower runner slidably held on the central shaft, an opening spring retained in the central shaft, a control device installed within the grip of the central shaft without protruding any acute portion of the control device for safety purpose, and a drag device including a rod and a rope connected to each other to be retained between a lower portion of the lower tube and the lower runner slidably held on the central shaft, whereby upon actuation of the control device, the upper tube will be extended above the lower tube by the opening spring and the rib assembly may also be upwardly outwardly extended as dragged by the rope and the rod of the drag device for opening the umbrella, with the upper tube slidably telescopically engageable with the lower tube without forming any joint at the coupling location where the upper an
    Type: Grant
    Filed: April 14, 1997
    Date of Patent: April 21, 1998
    Assignee: Fu Tai Umbrella Works, Ltd.
    Inventors: Chung-Kuang Lin, Jung-Jen Chang
  • Patent number: 5720311
    Abstract: A telescopic umbrella shaft includes at least an inner tube, and an outer tube telescopically slidably engageable with the inner tube, with each tube having a cross section of hexagonal shape consisting of six arcuate rectangular sides each arcuate rectangular side concaved inwardly towards a longitudinal axis of the shaft, and every two neighboring arcuate rectangular sides converging to form a reinforcing rib convex outwardly from the longitudinal axis, with each reinforcing rib formed as an inversed-U shape and having a longitudinal strip defining a horizontal plane perpendicular to a normal line between the longitudinal axis and an apex intersected by the two neighboring arcuate rectangular sides of the tube, thereby forming a balanced moment of inertia of the concave and convex portions of the tube when dynamically rotating the central shaft for greatly enhancing the stability and strength of the umbrella shaft.
    Type: Grant
    Filed: April 15, 1997
    Date of Patent: February 24, 1998
    Assignee: Fu Tai Umbrella Works, Ltd.
    Inventors: Chung-Kuang Lin, Jung-Jen Chang
  • Patent number: 5706844
    Abstract: A pocketable folding umbrella includes: a slim upper notch secured on an upper portion of a central shaft; a slim lower runner slidably held on the central shaft; a plurality of extremity rib sets respectively radially pivotally secured to two extremity portions of the upper notch and the lower runner, a plurality of flat-side rib sets respectively universally pivotally secured to an upper gradational platform protruding downwardly from the upper notch and a lower gradational platform protruding upwardly from the lower runner, and an umbrella cloth secured with the rib sets, whereby upon folding of the umbrella from an opened state, the flat-side rib sets will be inwardly folded from an outer biased position towards a flat side portion of the upper gradational platform of the upper notch and towards a flat side portion of the lower gradational platform of the lower runner as accompanied with a radially folding of the extremity rib sets on the two extremity portions of the upper notch and the lower runner for
    Type: Grant
    Filed: February 12, 1996
    Date of Patent: January 13, 1998
    Assignee: Fu Tai Umbrella Works, Ltd.
    Inventors: Chung-Kuang Lin, Jung-Jen Chang
  • Patent number: 5690132
    Abstract: A safety umbrella includes: a lower runner for pivotally connecting the ribs of the umbrella slidably held on a central shaft of the umbrella and formed with a latch hole in the lower runner; a controller formed in a grip of the central shaft having a push button normally protruding outwardly from the grip, and a latch connectable with the push button and resiliently urged by a restoring spring retained in the grip for operatively engaging the latch hole in the lower runner for locking the lower runner and the ribs at a folded condition, to thereby eliminate a long slot cut in the shaft above the grip to prevent deformation or damage of the shaft and to eliminate the acute spring catch formed in the shaft to prevent injury to the umbrella user as stuck by the conventional spring catch.
    Type: Grant
    Filed: December 26, 1996
    Date of Patent: November 25, 1997
    Assignee: Fu Tai Umbrella Works, Ltd.
    Inventors: Chung-Kuang Lin, Jung-Jen Chang
  • Patent number: 5626161
    Abstract: A multiple-fold automatic umbrella includes: a control device having a push button slidably held in the grip for controlling the opening and closing of the umbrella, a slotted arm member secured to the push button having a pair of sockets formed in the slotted arm member, a shortened upper latch having a pair of lugs engageable with the pair of sockets for unlocking a folded telescopic shaft of the umbrella when depressing the push button for opening the umbrella, and a convex spring plate secured to a plug fixed into an inner tube of the shaft having a pair of flaps disposed on two opposite side portions of the convex spring plate for slidably holding a locking head of an umbrella-closing controller to be locked in the inner tube for a reliable folding operation of the umbrella.
    Type: Grant
    Filed: April 29, 1996
    Date of Patent: May 6, 1997
    Assignee: Fu Tai Umbrella Works, Ltd.
    Inventors: Chung-Kuang Lin, Jung-Jen Chang
  • Patent number: 5615697
    Abstract: A pocketable folding umbrella Includes: a slim upper notch secured on an upper portion of a central shaft; a slim lower runner slidably held on the central shaft; two extremity rib sets respectively pivotally secured to two extremity portions of the upper notch and the lower runner; four flat-side rib sets respectively pivotally secured to two flat-side portions of the upper notch and the lower runner; an umbrella cloth secured on the rib sets; a plurality of folding springs each secured on the rib set for resiliently retracting the rib sets for minimizing a folding volume of the rib sets: and a narrowing member formed or secured to the upper notch and having a pair of U-shaped recesses disposed on two opposite end portions of the narrowing member for guiding the rib sets as being folded from an opening umbrella and storing the folded rib sets within the two U-shaped recesses for greatly minimizing the folding volume for forming a miniature slim pocketable foldable umbrella,
    Type: Grant
    Filed: June 10, 1996
    Date of Patent: April 1, 1997
    Assignee: Fu Tai Umbrella Works, Ltd.
    Inventors: Chung-Kuang Lin, Jung-Jen Chang
  • Patent number: 5564449
    Abstract: An automatic umbrella includes: a telescopic central shaft having a lower tube, an intermediate tube, an upper tube and a top tube telescopically engageable with one another; a rib assembly having at least a top rib pivotally secured to a middle runner slidably held on the central shaft, a top linking rib pivotally secured between the top rib and an upper notch fixed on the top tube, and a stretcher rib pivotally secured between the top rib and a lower runner slidably held on the central shaft, the top rib longitudinally formed with an elongate slot in the top rib and the upper, tube having a limiting pin fixed on the upper tube, at least an inner tension spring resiliently retained in the central shaft and urging the limiting pin upwardly, and an outer tension spring resiliently retained between the upper notch and a ring extension formed on the upper tube, whereby upon opening of the umbrella, the limiting pin one the upper tube is linearly guided in the elongate slot in the top tube for preventing twisting
    Type: Grant
    Filed: March 25, 1996
    Date of Patent: October 15, 1996
    Assignee: Fu Tai Umbrella Works, Ltd.
    Inventors: Chung-Kuang Lin, Jung-Jen Chang
  • Patent number: 5533535
    Abstract: A pocketable folding umbrella includes a slim upper notch generally rectangular shaped and secured on an upper portion of a central shaft; a slim lower runner generally rectangular shaped and slidably held on the central shaft; a plurality of extremity rib sets radially pivotally secured to two extremity portions of the upper notch and the lower runner, a plurality of flat-side rib sets universally pivotally secured to two flat-side portions of the upper notch and the lower runner, and an umbrella cloth secured with the rib sets, whereby upon folding of an opened umbrella, the flat-side rib sets will be inwardly folded towards a flat side portion of the upper notch and the lower runner as accompanied with a radially folding of the extremity rib sets on the two extremity portions of the upper notch and the lower runner for greatly minimizing the volume of the folded umbrella for a convenient carrying and storage.
    Type: Grant
    Filed: May 11, 1995
    Date of Patent: July 9, 1996
    Assignee: Fu Tai Umbrella Works, Ltd.
    Inventors: Chung-Kuang Lin, Jung-Jen Chang
  • Patent number: 5505222
    Abstract: A multiple-fold automatic umbrella includes: a control device having a push button slidably held in the grip for controlling the opening and closing of the umbrella, an opening controller of the control device formed as a sliding plate transversely slidably mounted in a middle portion of of push button for opening the umbrella from a closed state of the umbrella; and a closing controller of the control device having a lower latch contiguous to a middle portion of the push button to be depressed by the push button for closing an opened umbrella, whereby upon a direct depression of the push button without considering an upper button portion or a lower button portion of the push button, an umbrella can be opened or closed conveniently and ergonomically, thereby simplifying the structure and operation of the control device of the automatic umbrella.
    Type: Grant
    Filed: August 7, 1995
    Date of Patent: April 9, 1996
    Assignee: Fu Tai Umbrella Works, Ltd.
    Inventors: Chung-Kuang Lin, Jung-Jen Chang
  • Patent number: 5492140
    Abstract: A multiple-fold automatic umbrella includes: a control device for controlling the opening and closing of the umbrella by excavating the grip of the umbrella for reducing the weight and volume of the umbrella for making a compact foldable umbrella, an opening controller of the control device formed as a sliding plate transversely slidably mounted in an upper portion of the grip for opening the umbrella from a closed state of the umbrella; and a spring plate held in the grip for respectively urging the opening controller formed on the upper portion of the grip and a closing controller of the control device having a sliding latch slidably mounted in a lower portion of the grip for closing an opened umbrella, thereby simplifying the control device and the grip of the automatic umbrella.
    Type: Grant
    Filed: July 28, 1995
    Date of Patent: February 20, 1996
    Assignee: Fu Tai Umbrella Works, Ltd.
    Inventors: Chung-Kuang Lin, Jung-Jen Chang
  • Patent number: 5476113
    Abstract: An umbrella includes: central shaft having a bucket holding portion recessed in a bottom grip portion of a handle of the hollow central shaft, and a ladle telescopically securable in the hollow central shaft and the handle having a bucket portion formed on an outer end of the ladle, whereby upon a withdrawal of the ladle from the central shaft, the bucket portion can be protruded forwardly to pick up a golf ball when far hit into a lake or a pond in the golf course.
    Type: Grant
    Filed: March 13, 1995
    Date of Patent: December 19, 1995
    Assignee: Fu Tai Umbrella Works, Ltd.
    Inventors: Chung-Kuang Lin, Jung-Jen Chang
  • Patent number: 5441065
    Abstract: An automatic umbrella includes: a central shaft, a rib assembly for securing an umbrella cloth thereon, an opening spring for resiliently opening the umbrella, a plurality of closing springs for resiliently closing the umbrella, and a control device for controlling the opening or closing of the umbrella by depressing an upper portion or a lower portion of a push button of the control device with the control device including an anti-false operation safety device having a pair of lugs protruding downwardly from a collar resiliently held in a grip of the central shaft for normally shielding a depression of the lower portion of the push button for preventing an unexpected closing operation of an umbrella which is not fully opened after depressing the upper portion of the push button.
    Type: Grant
    Filed: January 9, 1995
    Date of Patent: August 15, 1995
    Assignee: Fu Tai Umbrella Works, Ltd.
    Inventors: Chung-Kuang Lin, Jung-Jen Chang
  • Patent number: 5390686
    Abstract: An automatic umbrella includes: a central shaft, a rib assembly for securing an umbrella cloth thereon, an opening spring for resiliently opening the umbrella, a plurality of closing springs for resiliently closing the umbrella, and a control device for controlling the opening or closing of the umbrella by depressing an upper portion or a lower portion of a seesaw button of the control device, the central shaft having a plurality of telescopic tubes telescopically retractible with one another and the rib assembly having a plurality of ribs, which can be folded to greatly shorten a total length of a closed umbrella adapted for convenient carrying or storing purposes.
    Type: Grant
    Filed: November 8, 1993
    Date of Patent: February 21, 1995
    Inventors: Chung-Kuang Lin, Jung-Jen Chang