Patents Assigned to L & A, Inc.
  • Patent number: 11975510
    Abstract: A plank is described and a method for manufacturing the plank. The plank can be produced by mixing polyvinyl chloride powder, coarse whiting and light calcium compound powder, stabilizer, polyethylene wax, internal lubricant, plasticizer, and impact modifier together, and stirring this mixture. The mixture is then extruded through an extruder compound to form a plastic composite base material. A surface layer is then tiled onto the plastic composite base material using thermal compression, without the use of intermediate adhesive materials. The surface layer can be embossed when it is combined with the mixture being extruded.
    Type: Grant
    Filed: April 6, 2021
    Date of Patent: May 7, 2024
    Assignee: WELLMADE FLOOR COVERING INT'L INC.
    Inventors: Ming Chen, Zhu Chen
  • Patent number: 11968765
    Abstract: The present disclosure describes devices and methods for improving the power efficiency and control of an induction heating system. In particular, the induction heating system includes a series resonant bridge inverter circuit and a control circuit. The inverter circuit includes one or more induction coils that are structured to inductively couple to the cookware to heat the cookware and a current sensor structured to sense a coil current signal across the one or more inductor coils. In particular, the current sensor is structured to generate a positive sensed voltage signal corresponding to a positive portion of the coil current signal and a negative sensed voltage signal corresponding to a negative portion of the coil current. The control signal is structured to control switching of a first and a second set of switches based on the positive and negative sensed voltage signals.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: April 23, 2024
    Assignees: The Vollrath Company, L.L.C., Virginia Tech Intellectual Properties, Inc.
    Inventors: Jeremiah Kopiness, Andrew Amrhein, Jong-Woo Kim, Moonhyun Lee, Jih-Sheng Lai
  • Patent number: 11957162
    Abstract: A method of manufacturing a filter that includes providing a tube having a cylindrical wall and a hollow interior. The method forms a first indentation within the tube in which a first portion of the of the cylindrical wall concaves into the hollow interior, and forms a second indentation within the tube in which a second portion of the cylindrical wall concaves into the hollow interior. The first and second indentations create 1) a first chamber and a second chamber in the tube that are separated by both indentations and 2) a path within the hollow interior formed between the first and second indentations that fluidly couples both chambers together.
    Type: Grant
    Filed: May 12, 2020
    Date of Patent: April 16, 2024
    Assignee: R.Y.L. INC.
    Inventors: Suk Hwan Ou, Kyung Kim
  • Publication number: 20240114649
    Abstract: A manifold system includes a supply manifold and a return manifold. The supply manifold delivers fluid to cold plates to cool processing units of a computing system. The return manifold receives the fluid from the cold plates. The supply manifold has supply fluid ports equidistantly spaced about the side surface of the supply manifold, and the return manifold has return fluid ports equidistantly spaced about the side surface of the return manifold.
    Type: Application
    Filed: September 29, 2022
    Publication date: April 4, 2024
    Applicant: ZT Group Int'l, Inc. dba ZT Systems
    Inventors: Sruti Chigullapalli, Chen An, YU Wang
  • Publication number: 20240102492
    Abstract: A fan guard includes a guard housing and a plurality of guard blades. The guard housing includes an outer tunnel wall forming a housing aperture to permit air to flow across the guard housing. The guard blades are disposed in the housing aperture. Each of the guard blades extend from the guard housing towards a center of the housing aperture. Each guard blade at least partially overlaps an adjacent guard blade. Each of the guard blades are droplet shaped.
    Type: Application
    Filed: September 26, 2022
    Publication date: March 28, 2024
    Applicant: ZT Group Int'l, Inc. dba ZT Systems
    Inventors: Cong Yao, Darell Sutton, Richard Gaugler
  • Publication number: 20240081025
    Abstract: A boiler plate is provided. The boiler plate includes a heat spreader layer operable to transfer heat from a computing component across the heat spreader layer. The heat spreader layer extends along a plane. At least one heat pipe extends from the heat spreader layer in a direction substantially perpendicular to the plane away from the computing component. The at least one heat pipe is operable to transfer the heat away from the heat spreader layer to reduce a temperature of the computing component.
    Type: Application
    Filed: September 6, 2022
    Publication date: March 7, 2024
    Applicant: ZT GROUP INT'L, INC. DBA ZT SYSTEMS
    Inventors: Ting Yu Lin, Tommy Lin
  • Patent number: 11920732
    Abstract: A quality control method for the preparation of dry compressed gas cylinder including passivating and/or preparing the compressed gas cylinder with the technique to be validated, filling the passivated/prepared compressed gas cylinder with gaseous carbon dioxide to a normal working pressure, wherein the gaseous carbon dioxide has a known ?18O isotope ratio, maintaining the pressurized gas cylinder at ambient temperature for a first predetermined period of time, and gradually emptying the pressurized gas cylinder, while simultaneously measuring the ?18O isotopic ratio, wherein a predetermined variation in the measured isotopic ratio of ?18O indicates a properly prepared cylinder.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: March 5, 2024
    Assignees: Airgas, Inc., America Air Liquide, Inc., L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude
    Inventors: Tracey Jacksier, Mani C. Matthew, Richard A. Socki, Jun Sonobe, Megumi Isaji, James McHale
  • Patent number: 11913576
    Abstract: A device for constraining liquid cooling tubes may include connecting a first tube connector and a second tube connector with a stretchable strip of flexible material. The first tube connector is configured to fluidly seal to a first end of a liquid cooling tube, and the second tube connector is configured to fluidly seal to a second end of the liquid cooling tube. The device may also include connecting the first tube connector to a first manifold and connecting the second tube connector to a second manifold when a computing device in a rack is in operation. The device may also include disconnecting the first tube connector to the first manifold and the second tube connector to the second manifold. The first tube connector and the second tube connector are constrained by the stretchable strip of flexible material when the computing device is moved out of the rack.
    Type: Grant
    Filed: February 16, 2022
    Date of Patent: February 27, 2024
    Assignee: ZT GROUP INT'L, INC.
    Inventors: Anthony Villafuerte, Mark Chubb, Chen An
  • Patent number: 11910560
    Abstract: A crossbar is provided that is operable to be removably installed in a sled for a modular server and/or information handling system, for example a network equipment building system. The crossbar includes a frame, a keystone portion of the frame forming a keystone air duct, and a riser guide extending from the frame. The keystone portion is operable to direct air flow through the keystone air duct towards a heat sink and/or a CPU. The riser guide is operable to align a riser to be plugged into a motherboard installed in the sled. The frame is operable to be a structural component that is substantially coupled to the sled chassis.
    Type: Grant
    Filed: March 30, 2022
    Date of Patent: February 20, 2024
    Assignee: ZT GROUP INT'L, INC.
    Inventors: Michael Dennis Marcade, Ellie Elsu, Mark Hammond, Vladimir Igor Lipnevici, Bradley Andrew Jackson
  • Patent number: 11856981
    Abstract: A method of manufacturing a tip for use with smokeable substances. A tube is rotated while applying heat to a section. The heated section is squeezed with tapered rollers and a pivoting rod is inserted. The rollers and rod are removed and heat is again applied. The heated portion is squeezed a second time with the tapered rollers and the rod is reinserted. The rollers and rod are removed and heat is again applied. The heated portion is again squeezed with the tapered rollers and the pivoting rod is again reinserted. The rollers and rod are removed and heat is applied to the end of the tube. The tube is scored above the end to form a scored line. Heat is applied to the scored line. Water is sprayed onto the scored line to split the tube into two pieces. Heat is applied to the tube at the split end.
    Type: Grant
    Filed: September 15, 2021
    Date of Patent: January 2, 2024
    Assignee: R.Y.L. INC.
    Inventor: Suk Hwan Ou
  • Patent number: 11864339
    Abstract: A lock device may include a slider assembly including a first slider, a second slider movably coupled to the first slider, and a base having a planar portion with a top rail and a bottom rail that hold the slider assembly and allows the relative movement of the first slider relative to the second slider along the top and bottom rails in the base. The second slider can move relative to the first slider to different positions including a latch lock position, a latch unlock position, and a latch impending lock position. The lock device may also include a latch assembly attached to a chassis. The latch assembly including a latch element is configured to move to a first, a second, and a third heights from the top rail of the base corresponding to the latch lock position, the latch unlock position, and the latch impending lock position of the slider assembly, respectively.
    Type: Grant
    Filed: August 13, 2021
    Date of Patent: January 2, 2024
    Assignee: ZT GROUP INT'L, INC.
    Inventors: Chen An, Zichun Song
  • Patent number: 11852186
    Abstract: An apparatus provides a latch with a rotary dial and a leaf spring with teeth that extend from a frame into an engaging position. Inward axial movement of the dial causes the dial to deform the leaf spring and the teeth to extend into the engaging position. In the engaging position, the dial supports the teeth and resists forces that might otherwise cause the teeth to unlatch. In the engaging position, a catch in a track on the dial engages a pin of the frame to maintain the engaging position. From the engaging position, a rotation of the dial unseats the catch and allows the dial to move axially outward and the teeth to recede into the frame.
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: December 26, 2023
    Assignee: ZT Group Int'l, Inc.
    Inventors: Chen An, Maheshkumar Varrey, Zichun Song
  • Patent number: 11845825
    Abstract: A method for manufacturing a rubber-reinforced styrenic resin powder comprising 40% by mass or more of a rubbery polymer, satisfying the following conditions (1) to (4): (1) at least first and second coagulation baths are provided; (2) the first and second coagulation baths are connected; (3) an emulsified dispersion of fatty acid amide is supplied to the connecting part in an amount of 0.2 parts by mass to 2.0 parts by mass (solid content) with respect to 100 parts by mass (solid content) of a slurry; and (4) a temperature in the second coagulation bath is equal to or higher than a temperature in the first coagulation bath.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: December 19, 2023
    Assignee: NIPPON A&L INC.
    Inventor: Takashi Saito
  • Patent number: 11828780
    Abstract: Systems and methods are described for reporting capacitance of a capacitor of a power backup circuit comprising a plurality of metal-oxide-semiconductor field-effect transistors (MOSFETs). The system may also include a bleeder resistor and a voltage detection circuit. When capacitance monitoring is active, a first MOSFET may be turned off, causing the capacitor to be discharged via the bleeder resistor. After predetermined time intervals, a first drain voltage and a second drain voltage of the first MOSFET may be determined using the voltage detection circuit. The drain voltage readings at the different times may be used to determine the capacitance of the capacitor, which may be used to generate and transmit a report on capacitor performance and status.
    Type: Grant
    Filed: June 22, 2021
    Date of Patent: November 28, 2023
    Assignee: ZT Group Int'l, Inc.
    Inventors: Yung-Tsung Hsieh, Chi-Lin Chiu
  • Publication number: 20230380097
    Abstract: A lock device may include a slider assembly including a first slider, a second slider movably coupled to the first slider, and a base having a planar portion with a top rail and a bottom rail that hold the slider assembly and allows the relative movement of the first slider relative to the second slider along the top and bottom rails in the base. The second slider can move relative to the first slider to different positions including a latch lock position, a latch unlock position, and a latch impending lock position. The lock device may also include a latch assembly attached to a chassis. The latch assembly including a latch element is configured to move to a first, a second, and a third heights from the top rail of the base corresponding to the latch lock position, the latch unlock position, and the latch impending lock position of the slider assembly, respectively.
    Type: Application
    Filed: August 1, 2023
    Publication date: November 23, 2023
    Applicant: ZT GROUP INT'L, INC. DBA ZT SYSTEMS
    Inventors: Chen An, Zichun Song
  • Publication number: 20230376088
    Abstract: A method is provided for dynamically controlling fan speed of a computing system during boot and reboot. The method may include receiving an ambient temperature from a sensor by a controller. The method may also include controlling speed for one or more fans dynamically based upon the ambient temperature using a dynamic algorithm during boot and reboot of the computing system. The dynamic algorithm may include a function for the fan speed of the one or more fans based upon the ambient temperature.
    Type: Application
    Filed: August 1, 2023
    Publication date: November 23, 2023
    Applicant: ZT GROUP INT'L, INC. DBA ZT SYSTEMS
    Inventors: Christopher Adams, Sruti Chigullapalli, Son Lam
  • Patent number: 11815428
    Abstract: An apparatus and system are provided for detecting leaks in cooling tubing using sensor cabling. In the leak detection system, a leak detection cable is routed along the full length of the cooling tube. The leak detection cable and the cooling tubing are encased within a shrunken tube, which leaves such a small gap between the cooling tubing and the heat-shrunk tube that leakage is distributed within the gap about the outside of the cooling tubing by capillary action. The relative position of the detection cable above or below the cooling tubing is then irrelevant, since the capillary action may overcome the effect of gravity and distribute leakage from the bottom of the tubing to a detection cable at the top of the tubing.
    Type: Grant
    Filed: July 29, 2021
    Date of Patent: November 14, 2023
    Assignee: ZT Group Int'l, Inc.
    Inventors: Mahesh Kumar Varrey, Chen An
  • Patent number: 11812579
    Abstract: An apparatus is provided for locking rack-mounted electronic devices within a rack upon removal of one of the electronic devices from the rack. The apparatus includes a shaft rotatably connected to the rack and provided at each slot position with a set of paddles, including a locking paddle and a trigger paddle. With the rack populated with devices, the removal of one device from a slot causes a block attached to the device to urge against a trigger paddle, which rotates the shaft. As the shaft continues to rotate, with the motion of the block caused by the removal of the device, the locking paddle for each slot is rotated into a position such that an attempt to remove any of the other devices from the rack causes the associated block to abut the locking paddle, which does not yield.
    Type: Grant
    Filed: April 28, 2021
    Date of Patent: November 7, 2023
    Assignee: ZT Group Int'l, Inc.
    Inventors: Mark Alan Hammond, Jared Scott Harlan, Ryan Signer
  • Patent number: D1005575
    Type: Grant
    Filed: December 14, 2021
    Date of Patent: November 21, 2023
    Assignee: R.Y.L. Inc.
    Inventor: Suk Hwan Ou
  • Patent number: D1010212
    Type: Grant
    Filed: December 14, 2021
    Date of Patent: January 2, 2024
    Assignee: R.Y. L. Inc.
    Inventor: Suk Hwan Ou