Patents by Inventor Jark Chong Lau
Jark Chong Lau 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).
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Patent number: 6454749Abstract: There is provided a bellows adapted to be actuated by the movement of a wearer's body and force air into a personal care product in a region between the skin of the wearer and the product. The bellows may be located in the periphery of the personal care product and the discharge of the bellows is directed into the personal care product so air is forced into the product.Type: GrantFiled: August 11, 1998Date of Patent: September 24, 2002Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Jark Chong Lau, James Arthur Davis, Kenneth Yin Wang, Wanda Walton Jackson
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Patent number: 5935512Abstract: Improved equipment and method for spinning filaments for nonwovens using an integral spinbank including one or more spinplates producing filament bundles separated by one or more central conduits for quench air. Embodiments include high velocity quench air driven into the central conduit or quench air blown or drawn in from outside the filaments into the central conduit. Means may also be provided for removal of undesired waxes and/or other condensates through a central exhaust removal using the central conduit. As quench air velocity is increased through the central conduit, the streams tend to improve total quench flow by deflecting opposing flows into a uniform stream. Other variations include division of quench air into flow zones that may be independently controlled and varying the angle of quench air flow and/or the spinplates to maintain separation distance between quench air and filament bundles.Type: GrantFiled: December 18, 1997Date of Patent: August 10, 1999Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Bryan David Haynes, Kevin James Kastner, Jark Chong Lau, Samuel Edward Marmon, Charles John Morell, Stephen Harding Primm, Thomas Gregory Triebes
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Patent number: 5913329Abstract: There is provided a high speed rotary valve which is relatively simple in design and which can effectively regulate the flow of fluid under high temperature conditions in such a manner as to produce perturbations in the fluid stream. Such a valve may be used to regulate the flow of fluid, e.g. air, toward a work piece to produce a perturbation in the piece for example. The clearance between the rotor and stator is such that the flow of fluid is never completely cut off, i.e., the valve continues to "leak through" the closed outlet port even when the rotor and stator openings are not aligned. Fluids having temperatures in the range of 40 to at least 900.degree. F. may be processed through this valve. The valve is also useful in creating aerosols of liquids and gases and in producing blown fibers.Type: GrantFiled: March 19, 1997Date of Patent: June 22, 1999Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Bryan David Haynes, Lamar Heath Gipson, Jeffrey Lawrence McManus, Kenneth Randall Suggs, Jark Chong Lau, Paul Allan Giles
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Patent number: 5811178Abstract: Disclosed is an improved high sorbency nonwoven fabric and its use particularly as an oilsorb material. The high sorbency nonwoven is preferably made by multi-bank meltblowing and different perturbing thermoplastic fibers of, for example, propylene polymers in separate banks to provide a fiber density gradient through the thickness of the fabric. The sorbent nonwovens have high bulk and strength, oil capacity and oil absorption rates making them particularly suited to such applications. Treatments and additives for such materials are also disclosed.Type: GrantFiled: November 15, 1996Date of Patent: September 22, 1998Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Gabriel Haman Adam, Bryan David Haynes, Jark Chong Lau, Jeffrey Lawrence McManus
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Patent number: 5807795Abstract: A method and apparatus for forming artificial fibers and a non-woven web therefrom includes means for generating a substantially continuous fluid stream along a primary axis, at least one extrusion die located adjacent to the continuous fluid stream for extruding a liquified resin into fibers, means for injecting the fibers into the primary fluid stream, and perturbation means for selectively perturbing the flow of fluid in the fluid stream by varying the fluid pressure on either side of the primary axis to produce crimped fibers for forming the non-woven web. The inventive manufacturing method finely tunes non-woven web material characteristics such as tensile strength, porosity, barrier properties, absorbance, and softness by varying the fluid stream perturbation frequency and amplitude. Finally, the inventive method and apparatus may be implemented in combination with melt-blown, spunbond and coform techniques for producing non-woven webs.Type: GrantFiled: June 2, 1997Date of Patent: September 15, 1998Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Jark Chong Lau, Bryan David Haynes
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Patent number: 5711970Abstract: An apparatus for forming artificial fibers and a non-woven web therefrom includes a device for generating a substantially continuous fluid stream along a primary axis, at least one extrusion die located adjacent to the continuous fluid stream for extruding a liquefied resin into fibers, a member for entraining the fibers in the primary fluid stream, and a perturbation mechanism for selectively perturbing the flow of fluid in the fluid stream by varying the fluid pressure on either side of the primary axis to produce crimped fibers for forming the non-woven web. The inventive manufacturing method finely tunes non-woven web material characteristics such as tensile strength, porosity, barrier properties, absorbance, and softness by varying the fluid stream perturbation frequency and amplitude. Finally, the inventive apparatus may be implemented in combination with melt-blown, spunbond and coform techniques for producing non-woven webs.Type: GrantFiled: August 2, 1995Date of Patent: January 27, 1998Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Jark Chong Lau, Bryan David Haynes
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Patent number: 5695377Abstract: There is provided a fabric produced by a spunbond or a meltblown apparatus, wherein the apparatus has a pneumatic chamber having at least one wall containing a plurality of spaced protrusions. Preferably, both opposing walls contain protrusions aligned in staggered angled rows and the rows on one wall are angled opposite the rows on the opposing wall, thereby causing controlled lateral flow near the chamber walls. This lateral flow exhibits drag on the fibers, imparting rotational energy to the fibers. The fibers are imparted with rotational energy derived from the lateral component of the two turbulent airflow fields that oppose one another, and have a tendency to twist and crimp. Fabrics so produced have improved loft, drape, and feel and may be useable as a loop material for hook-and-loop type fasteners.Type: GrantFiled: October 29, 1996Date of Patent: December 9, 1997Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Thomas Gregory Triebes, Jark Chong Lau
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Patent number: 5667749Abstract: A method and apparatus for forming artificial fibers and a non-woven web therefrom includes generating a substantially continuous fluid stream along a primary axis, at least one extrusion die located adjacent to the continuous fluid stream for extruding a liquified resin into fibers, injecting the fibers into the primary fluid stream, and selectively perturbing the flow of fluid in the fluid stream by varying the fluid pressure on either side of the primary axis to produce crimped fibers for forming the non-woven web. The inventive manufacturing method finely tunes non-woven web material characteristics such as tensile strength, porosity, barrier properties, absorbance, and softness by varying the fluid stream perturbation frequency and amplitude. Finally, the inventive method and apparatus may be implemented in combination with melt-blown, spunbond and coform techniques for producing non-woven webs.Type: GrantFiled: August 2, 1995Date of Patent: September 16, 1997Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Jark Chong Lau, Bryan David Haynes
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Patent number: 5652048Abstract: Disclosed is an improved high sorbency nonwoven fabric and its use particularly as an oilsorb material. The high sorbency nonwoven is preferably made by meltblowing and perturbing thermoplastic fibers of, for example, propylene polymers. The sorbent nonwovens have high bulk and strength, oil capacity and oil absorption rates making them particularly suited to such applications. Treatments and additives for such materials are also disclosed.Type: GrantFiled: September 15, 1995Date of Patent: July 29, 1997Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Bryan David Haynes, Jeffrey Lawrence McManus, Jark Chong Lau