Patents by Inventor Rufei Ma

Rufei Ma 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: 11629737
    Abstract: A profile clamp includes a clamping band and a first tensioning head arranged at a first end and a second tensioning head arranged at a second end of the clamping band. The first tensioning head includes a first opening and the second tensioning head includes a second opening. A screw is provided with a screw head and a screw body. The screw body may be guided through the first opening and the second opening. A threaded nut is provided, which may be arranged on the screw body when the screw body is guided through the first opening and the second opening. The screw body has a first threaded section and a second threaded section and a section of reduced diameter therebetween.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: April 18, 2023
    Assignee: NORMA Germany GmbH
    Inventors: Rufei Ma, Shiwen Wang, Gary Ives
  • Publication number: 20210347314
    Abstract: A device for holding a tubular component on a vehicle is proposed. The device includes a bracket, two strap parts and at least two trunnions. Both strap parts on one end include a loop and on an opposed end a connection surface. The bracket includes at least one receiving opening for each trunnion to hold the respective trunnion in the at least one receiving opening. Each loop is dimensioned to allow one of the trunnions to extend through the loop when being placed in the respective at least one receiving opening of the bracket. The connection surfaces are shaped so as to be connectable to each other and to form a closed strap and the bracket includes a holding device for attaching the bracket to the vehicle.
    Type: Application
    Filed: September 18, 2019
    Publication date: November 11, 2021
    Inventors: Jonathan Heywood, Minghui Liang, Degang Hao, Rufei Ma
  • Publication number: 20200355205
    Abstract: A profile clamp includes a clamping band and a first tensioning head arranged at a first end and a second tensioning head arranged at a second end of the clamping band. The first tensioning head includes a first opening and the second tensioning head includes a second opening. A screw is provided with a screw head and a screw body. The screw body may be guided through the first opening and the second opening. A threaded nut is provided, which may be arranged on the screw body when the screw body is guided through the first opening and the second opening. The screw body has a first threaded section and a second threaded section and a section of reduced diameter therebetween.
    Type: Application
    Filed: June 21, 2018
    Publication date: November 12, 2020
    Applicant: NORMA Germany GmbH
    Inventors: Rufei MA, Shiwen WANG, Gary IVES
  • Patent number: 7533910
    Abstract: A clamp that includes a collar having first and second ends from which first and second lugs extend. Each of the first and second lugs has a thick portion and a thin portion, and the lugs are connected by a fastener. The clamp is positioned around tubes, and the fastener is tightened to tighten the clamp around the connection. The fastener may be tightened from an open position OP, when the lugs are not touching, to a closed position CP, when the thick portions of the lugs are touching. The fastener may be tightened further to a third position, so that the thin portions of the lugs move closer to one another. The clamp may also include a hinge area in which a gasket seal may be attached to the clamp or one of the tubes.
    Type: Grant
    Filed: February 1, 2006
    Date of Patent: May 19, 2009
    Assignee: R.G. Ray Corp.
    Inventors: Rufei Ma, Dan Liedtke
  • Publication number: 20070176425
    Abstract: The present invention pertains to a clamp that includes a collar. The collar has first and second ends from which first and second lugs extend. Each of the first and second lugs has a thick portion and a thin portion, and the lugs are connected by a fastener. The clamp is positioned around tubes, and the fastener is tightened to tighten the clamp around the connection. The fastener may be tightened from an open position OP, when the lugs are not touching, to a closed position CP, when the thick portions of the lugs are touching. The fastener may be tightened further to a third position, so that the thin portions of the lugs move closer to one another. The clamp may also include a hinge area in which a gasket seal may be attached to the clamp or one of the tubes.
    Type: Application
    Filed: February 1, 2006
    Publication date: August 2, 2007
    Applicant: R.G Ray Corporation
    Inventors: Rufei Ma, Dan Liedtke