Patents by Inventor Tuan A. Le

Tuan A. Le 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).

  • Publication number: 20160002903
    Abstract: A siphonic flush toilet system and method of priming the same having a toilet bowl assembly comprising at least one jet flush valve assembly and at least one rim valve; and bowl having a rim and a jet defining at least one jet channel. The bowl has a closed jet pathway to maintain the jet channel in a primed state with fluid from the jet flush valve assembly to prevent air from entering the closed jet pathway. Flush valves may have back-flow preventer mechanisms and/or at least partly flexible valve covers, including specific valve cover structures. Flush activation assemblies may have a flush activation bar connected to the pivot rod and/or an adjustable flush connector located between the pivot rod and the flush activation bar. A kit providing one or more flush activation elements is included. The kit elements may be usable with the toilet systems and methods described.
    Type: Application
    Filed: September 14, 2015
    Publication date: January 7, 2016
    Inventors: David Grover, Daigo Ishiyama, Christophe Bucher, Tuan Le, James McHale
  • Patent number: 9085715
    Abstract: The present invention relates to a process for assembling at least one zone of a first surface with at least one zone of a second surface or with a molecule of interest, comprising a step that consists in placing the said zone of the said first surface in contact with the said zone of the said second surface or with the said molecule of interest, the said zone of the said first surface bearing at least one radical and/or ionic species. The present invention also relates to a solid support whose surface bears at least one zone with at least one radical and/or ionic species, with at least one adhesion primer, or with at least one adhesion primer precursor, and to its various uses.
    Type: Grant
    Filed: April 2, 2009
    Date of Patent: July 21, 2015
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE
    Inventors: Thomas Berthelot, Guy Deniau, Vincent Huc, Xuan Tuan Le, Fabien Nekelson, Sébastien Roussel, Pascal Viel
  • Patent number: 9075243
    Abstract: Embodiments of the present invention describe systems and methods for delivering ultrashort laser pulses through an optical fiber system with higher order mode fiber output and without pre-chirping. In one embodiment of the present invention, an all-fiber delivery system comprises a mode-locked solid-state or fiber laser for generating laser pulses in the 0.2 ?m to 1.3 ?m wavelength range, a single mode fiber with normal dispersion, and a long-period-grating mode converter, and a higher order mode fiber with anomalous dispersion, wherein the all-fiber delivery system is free of bulk optics, and propagates laser pulses without pulse pre-chirping, and wherein higher order mode output beam from the all-fiber delivery system comprises pulses at less than about 200 femtoseconds.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: July 7, 2015
    Assignee: OFS FITEL, LLC
    Inventors: Kim G. Jespersen, Tuan Le
  • Publication number: 20150167280
    Abstract: A toilet sensor and actuator assembly, having: (a) an infrared sensor configured to detect the presence of an object at a far distance from a toilet; (b) an ultrasonic sensor configured to detect the presence of the object at a near distance from the toilet, wherein the ultrasonic sensor remains in a sleep mode until awakened by a signal from the infrared sensor that the infrared sensor has detected the presence of the object at the far distance; and (c) an actuator mechanism that flushes the toilet in response to a signal from the ultrasonic sensor that the ultrasonic sensor has detected the presence of the object at the near distance.
    Type: Application
    Filed: December 16, 2013
    Publication date: June 18, 2015
    Applicant: FLUIDMASTER, INC.
    Inventors: Tuan Le, Adam Sampson, Derres Cataiano, Stewart Walton, Scott Valoff, Robb Milley
  • Publication number: 20140328365
    Abstract: A multifunctional laser device configured to be applicable as such in each of: multiple photon processes, nano structuring processes, optical coherence tomography, Terahertz (THZ) spectroscopy, THz imaging; or a combination of such processes; and comprising a mode-locked linear (X or Z-folded) fs laser resonator having a repetition rate of at least 300 MHz and 600 MHz at most and, thus, a corresponding short resonator length, said fs laser resonator further being a dispersive mirrors cavity having an average negative GDD (Group Delay Dispersion) in the spectral range of the laser operation, and being arranged to generate laser pulses with a pulse width of less than 30 fs, and comprising a pump laser operating at an optical output pump power of less than 2 W.
    Type: Application
    Filed: November 15, 2012
    Publication date: November 6, 2014
    Inventors: Alexander Grujic, Tuan Le, Andreas Stingl, Alfred Tomasch
  • Publication number: 20140109996
    Abstract: A flow valve that maintains a constant flow valve despite varying pressures at its inlet, comprising: (a) an elongated cage with alternating axially-extending pockets and ridges on its inner surface; and (b) an elongated generally conical shaped elastomeric sleeve received within the elongated cage; wherein the sleeve flexes outwardly at higher pressures, thereby decreasing the size of the flow channel between the sleeve and cage, thereby restricting flow to maintain constant flow valve despite varying inlet pressures.
    Type: Application
    Filed: October 18, 2012
    Publication date: April 24, 2014
    Applicant: Fluidmaster, Inc.
    Inventors: Tuan LE, Jaime Berndt, Adam Sampson
  • Publication number: 20140026309
    Abstract: A toilet flush valve that has a moveable buoyant float therein, wherein the float has an open bottom end to trap air therein and wherein the housing includes controls to selectively release air to allow the float to move upwardly therein to permit flushing. By timing when one or two air vents on the housing are open, the duration and volume of the flush can be controlled, with the buoyancy provided by the water lifting the float to open the flush valve. This provides a flushing system with minimal activation energy.
    Type: Application
    Filed: July 17, 2013
    Publication date: January 30, 2014
    Inventors: TUAN LE, Steve Cook, Adam Sampson
  • Patent number: 8615822
    Abstract: An air activated toilet flush system, including: a toilet bowl; a reservoir; a fluid conduit between the reservoir and the toilet bowl; a system for supplying water into the reservoir; and a system for supplying air into the reservoir, wherein a supply of air into the reservoir causes fluid to flow from the reservoir through the fluid conduit and into the toilet bowl.
    Type: Grant
    Filed: January 5, 2010
    Date of Patent: December 31, 2013
    Assignee: Fluidmaster, Inc.
    Inventors: Matt Vargas, Brian Lamb, Tom Stout, Eric Bennett, Tuan Le
  • Publication number: 20120312688
    Abstract: The present invention relates to a cation exchange membrane consisting in a polymeric matrix on the surface of which is(are) grafted at least one group of formula —R1—(CH2)m—NR2R3 and/or at least one molecule bearing at least one group of formula —R1—(CH2)m—NR2R3 wherein R1 represents an aryl group; m represents 0, 1, or 3; R2 and R3, either identical or different, represent a hydrogen or an alkyl group. The present invention relates to a method for preparing such a membrane and to its uses.
    Type: Application
    Filed: December 16, 2010
    Publication date: December 13, 2012
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Thomas Berthelot, Xuan Tuan Le
  • Publication number: 20120275195
    Abstract: A power supply may include a power transformer having a primary winding and a secondary winding, one end of the secondary winding connected to ground, and a shielded isolation transformer having a third winding, a fourth winding, and a shield, wherein the third winding is connected to the secondary winding and the shield is connected to ground. Primary side circuits may receive input power and generate a primary AC signal to drive the primary winding. Secondary side circuits may convert a secondary AC signal output from the fourth winding into a DC output.
    Type: Application
    Filed: April 24, 2012
    Publication date: November 1, 2012
    Inventors: Lorenzo Cividino, Thomas Ingman, Tuan Le
  • Publication number: 20120261003
    Abstract: A toilet valve adapter, including: a hollow body having a lower end dimensioned to be received into an outlet and an upper end dimensioned to support a flush valve thereon; a flange extending radially outwards from the hollow circular body; a gasket on the underside of the flange; and prongs projecting radially outwards from the lower end of the hollow circular body.
    Type: Application
    Filed: April 16, 2012
    Publication date: October 18, 2012
    Applicant: Fluidmaster, Inc.
    Inventors: Tom Stout, Tuan Le
  • Publication number: 20120224597
    Abstract: Embodiments of the present invention describe systems and methods for delivering ultrashort laser pulses through an optical fiber system with higher order mode fiber output and without pre-chirping. In one embodiment of the present invention, an all-fiber delivery system comprises a mode-locked solid-state or fiber laser for generating laser pulses in the 0.2 ?m to 1.3 ?m wavelength range, a single mode fiber with normal dispersion, and a long-period-grating mode converter, and a higher order mode fiber with anomalous dispersion, wherein the all-fiber delivery system is free of bulk optics, and propagates laser pulses without pulse pre-chirping, and wherein higher order mode output beam from the all-fiber delivery system comprises pulses at less than about 200 femtoseconds.
    Type: Application
    Filed: February 13, 2012
    Publication date: September 6, 2012
    Applicant: OFS Fitel, LLC
    Inventors: Kim Jespersen, Tuan Le
  • Patent number: 8185976
    Abstract: A flush valve is provided for flushing a toilet bowl. The flush valve includes a center tube having a lug, a flush activation device configured to initially raise the center tube, at least one latching mechanism configured to control movement of the center tube, and at least one rack configured to have movement controlled by the at least one latching mechanism. The at least one latching mechanism controls volume of fluid used during a flush.
    Type: Grant
    Filed: July 14, 2008
    Date of Patent: May 29, 2012
    Assignee: Fluidmaster, Inc.
    Inventors: Tuan Le, Bryan Janish, Robert Collin, Bill DeKeyser
  • Patent number: 8186367
    Abstract: A foldable walker includes upstanding legs arranged in a generally square pattern, each of which is capped by a fixed joint member and each of which has a slider member slideably disposed on it. Two forward legs are interconnected by two rigid links arranged in a scissors arrangement with the uppermost end of each link pivotally connected to a fixed joint member and the lowermost end of each link pivotally connected to a slider. Each forward leg is interconnected to its associated rearward leg in the same way. Each pair of rigid links is interconnected to one another by a pivot pin. The linkage enables the width and the depth of the walker to be reduced to a very small space and telescoping legs reduce the height dimension of the walker. Handles are folded when the walker is stored and pivoted into their operable position when the walker is deployed.
    Type: Grant
    Filed: July 15, 2010
    Date of Patent: May 29, 2012
    Assignee: University of South Florida
    Inventors: Tuan Le tran, Sukru Gokcek
  • Patent number: 8117687
    Abstract: A diverter valve including: an inlet port coupled to a refill tube; a first outlet port; a bowl refill tube coupled to the outlet port with its second end adjacent to a toilet tank overflow tube; a second outlet port; a central flow passageway providing a path of fluid communication between the inlet port and the first and second outlet ports, the entrance of the first outlet port and the entrance of the second outlet port being directly opposite one another in the central flow passageway; a poppet in the central flow passageway, the poppet having a raised position obstructing the first outlet port and a lowered position obstructing the second outlet port; an actuating arm, float member and rod coupled to the poppet, wherein movement of the float member translates downward motion of the rod into upward motion of the actuating arm and vice versa.
    Type: Grant
    Filed: August 10, 2009
    Date of Patent: February 21, 2012
    Assignee: Fluidmaster, Inc.
    Inventors: Tuan Le, Robert Collin
  • Patent number: 8104104
    Abstract: A dual flush button assembly includes a unitary button with a full flush surface and a partial flush surface. Pressing the partial flush surface moves the button linearly to active a partial flush. Pressing the full flush surface rotates the button to activate a full flush. An extension member beneath the button is coupled to a link of a dual flush valve. The extension member is moved farther when the full flush surface is engaged. The button is configured to pivot with respect to a housing when the full flush portion is engaged.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: January 31, 2012
    Assignee: Fluidmaster, Inc.
    Inventors: Tuan Le, Bryan Janish
  • Patent number: 8087107
    Abstract: A dual flush valve is provided for refilling fluid in a toilet bowl. The dual flush valve includes a refill mechanism configured to refill the toilet bowl with a substantially same volume of refill fluid for both a full flush and a half flush, a first valve connected to the refill mechanism, the first valve operates to control flow of fluid into a bowl, a fluid input is connected to a first port of the first valve, and a fluid output is connected to a second port of the first valve. The level of fluid in the bowl is refilled to a same level for both a full flush and a half flush.
    Type: Grant
    Filed: July 11, 2008
    Date of Patent: January 3, 2012
    Assignee: Fluidmaster, Inc.
    Inventors: Tuan Le, Bryan Janish
  • Publication number: 20110308115
    Abstract: A footwear and footwear construction method that creates the footwear upper sleeve (shoe upper) using at least two overlapping, layered panels of fabric oriented 90 degrees with respect to each other. A lacing system creates a support cage for the foot, which is independent from the footwear upper. The lacing support cage can be asymmetrical in several respects to accommodate the physically asymmetrical shape of the foot. The lacing system includes fingers independent from the footwear upper. The fingers then end in lace eyelets.
    Type: Application
    Filed: June 20, 2011
    Publication date: December 22, 2011
    Applicant: K-2 CORPORATION
    Inventors: Tuan Le, Aaron Azevedo, David A. Jewell
  • Patent number: 7954169
    Abstract: An athletic glove having an enhanced flexibility features for assisting in the opening and closing of the glove. A glove can include a front ply forming a palm and front portion and a back ply forming a back portion. The peripheries of the front and back plies attached together to form the glove. The glove includes a thumb stall, at least on finger stall, a hand receiving opening, a heel portion of the front ply, and a web portion positioned between the thumb stall and the finger stall. The glove further includes at least one predefined fold in the palm, such that the fold increases the flexibility of the glove and thereby facilitates the opening and closing of the glove. The glove can also comprise a notch formed in the back ply between the finger stall and the hand receiving opening to further increase the flexibility of the glove. Other embodiments are also claimed and described.
    Type: Grant
    Filed: July 5, 2007
    Date of Patent: June 7, 2011
    Assignee: Mizuno USA
    Inventors: Tim Rumer, Kenji Maeda, Tuan Le
  • Patent number: D678982
    Type: Grant
    Filed: December 5, 2011
    Date of Patent: March 26, 2013
    Assignee: Fluidmaster Inc.
    Inventors: Adam Sampson, Tuan Le, Tom Stout, John Whaley, David Peschel, Zaafir Kherani, Matt Vargas