Patents by Inventor Yee Ling Kwan

Yee Ling Kwan 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).

  • Insert for die cast shot sleeve
    Patent number: 10071417
    Abstract: A shot sleeve for use in a die cast assembly has a shot sleeve body extending along an axis and having a bore for receiving a plunger. An insert is secured at a shot end of the shot sleeve body. A die cast assembly is also disclosed.
    Type: Grant
    Filed: July 9, 2014
    Date of Patent: September 11, 2018
    Assignee: United Technologies Corporation
    Inventors: Yuan Kwang Lim, Yan Seng Loh, Andrew Tan, Yao Hui Chee, Shih Han Wong, yee Ling Kwan
  • Die casting machine shot sleeve with pour liner
    Patent number: 9987678
    Abstract: A shot sleeve for a die casting machine includes a shot sleeve body with a pour opening that extends to a spaced apart inner and outer diameters. The shot sleeve body is a first material. A liner is secured to the shot sleeve body beneath the pour opening. The liner is a second material. The shot sleeve body and the liner together provide a plunger surface defining a cavity that is configured to receive a molten shot of material.
    Type: Grant
    Filed: August 5, 2014
    Date of Patent: June 5, 2018
    Inventors: Yuan Kwang Lim, Yan Seng Loh, Andrew Tan, Yao Hui Chee, Shih Han Wong, Yee Ling Kwan
  • Replaceable piston ring for die casting machine plunger
    Patent number: 9962761
    Abstract: A plunger assembly for a die casting machine shot sleeve includes a plunger body that has an outer diameter. The plunger includes a head that provides a wall. A piston ring is arranged on the plunger body adjacent to the wall. A nut is secured to the outer diameter and urges the piston ring toward the wall to retain the piston ring securely on the plunger body.
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: May 8, 2018
    Assignee: PRATT & WHITNEY SERVICES PTE LTD.
    Inventors: Yuan Kwang Lim, Yan Seng Loh, Andrew Tan, Yao Hui Chee, Shih Han Wong, Yee Ling Kwan
  • SHOT TUBE FOR DIE-CAST MACHINE
    Publication number: 20180117670
    Abstract: A shot tube includes an inner bore for delivering molten material into a die-cast mold. The shot tube has an outer peripheral surface with at least one surface for receiving a locking member to lock the shot tube into an aperture in a fixed mold portion and an alignment structure for properly aligning the shot tube in the fixed mold portion. An opening receives molten material into the inner bore.
    Type: Application
    Filed: December 22, 2017
    Publication date: May 3, 2018
    Inventors: Mario P. Bochiechio, Yee Ling Kwan, Carl R. Verner
  • Shot tube for die-cast machine
    Patent number: 9884365
    Abstract: A shot tube includes an inner bore for delivering molten material into a die-cast mold. The shot tube has an outer peripheral surface with at least one surface for receiving a locking member to lock the shot tube into an aperture in a fixed mold portion and an alignment structure for properly aligning the shot tube in the fixed mold portion. An opening receives molten material into the inner bore. A die-cast machine is also disclosed.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: February 6, 2018
    Assignee: United Technologies Corporation
    Inventors: Mario P. Bochiechio, Yee Ling Kwan, Carl R. Verner
  • DIE CASTING MACHINE SHOT SLEEVE
    Publication number: 20170036269
    Abstract: A method of manufacturing a shot sleeve for a die casting machine includes engaging an intermediate sleeve layer with one of an outer sleeve layer and an inner sleeve layer, and shrink fitting the other of the outer sleeve layer and an inner sleeve layer into engagement with the intermediate sleeve layer.
    Type: Application
    Filed: November 27, 2014
    Publication date: February 9, 2017
    Inventors: Yuan Kwang Lim, Yan Seng Loh, Andrew Tan, Yao Hui Chee, Shih Han Wong, Yee Ling Kwan
  • DIE CASTING MACHINE SHOT SLEEVE WITH POUR LINER
    Publication number: 20160279702
    Abstract: A shot sleeve for a die casting machine includes a shot sleeve body with a pour opening that extends to a spaced apart inner and outer diameters. The shot sleeve body is a first material. A liner is secured to the shot sleeve body beneath the pour opening. The liner is a second material. The shot sleeve body and the liner together provide a plunger surface defining a cavity that is configured to receive a molten shot of material.
    Type: Application
    Filed: August 5, 2014
    Publication date: September 29, 2016
    Applicant: United Technologies Corporation
    Inventors: Yuan Kwang Lim, Yan Seng Loh, Andrew Tan, Yao Hui Chee, Shih Han Wong, Yee Ling Kwan
  • REPLACEABLE PISTON RING FOR DIE CASTING MACHINE PLUNGER
    Publication number: 20160271686
    Abstract: A plunger assembly for a die casting machine shot sleeve includes a plunger body that has an outer diameter. The plunger includes a head that provides a wall. A piston ring is arranged on the plunger body adjacent to the wall. A nut is secured to the outer diameter and urges the piston ring toward the wall to retain the piston ring securely on the plunger body.
    Type: Application
    Filed: July 29, 2014
    Publication date: September 22, 2016
    Applicant: United Technologies Corporation
    Inventors: Yuan Kwang Lim, Yan Seng Loh, Andrew Tan, Yao Hui Chee, Shih Han Wong, Yee Ling Kwan
  • INSERT FOR DIE CAST SHOT SLEEVE
    Publication number: 20160184886
    Abstract: A shot sleeve for use in a die cast assembly has a shot sleeve body extending along an axis and having a bore for receiving a plunger. An insert is secured at a shot end of the shot sleeve body. A die cast assembly is also disclosed.
    Type: Application
    Filed: July 9, 2014
    Publication date: June 30, 2016
    Inventors: Yuan Kwang Lim, Yan Seng Loh, Andrew Tan, Yao Hui Chee, Shih Han Wong, yee Ling Kwan
  • SHOT TUBE FOR DIE-CAST MACHINE
    Publication number: 20160031004
    Abstract: A shot tube includes an inner bore for delivering molten material into a die-cast mold. The shot tube has an outer peripheral surface with at least one surface for receiving a locking member to lock the shot tube into an aperture in a fixed mold portion and an alignment structure for properly aligning the shot tube in the fixed mold portion. An opening receives molten material into the inner bore. A die-cast machine is also disclosed.
    Type: Application
    Filed: March 6, 2014
    Publication date: February 4, 2016
    Inventors: Mario P. Bochiechio, Yee Ling Kwan, Carl R. Verner
  • SHOT SLEEVE ASSEMBLY WITH MATERIALS OF DIFFERENT COEFFICIENTS OF THERMAL EXPANSION
    Publication number: 20150165521
    Abstract: A shot sleeve assembly for a die casting process includes a housing defining a bore open at both a front end and a rear end and a pour opening for receiving molten material, the housing includes a first coefficient of thermal expansion. A core is received within the bore and includes a second coefficient of thermal expansion lower than the first coefficient of thermal expansion. Front and rear covers attached to the housing hold the core in place within the bore and accommodate differences in thermal expansion between the housing and core.
    Type: Application
    Filed: July 26, 2013
    Publication date: June 18, 2015
    Applicant: Pratt & Whitney Services PTE LTD.
    Inventors: Wai Tuck Chow, Yee Ling Kwan