C-, U-, Or V-shaped Patents (Class 277/647)
  • Patent number: 6027126
    Abstract: A metal gasket, with a section comprising a heel (16) to ensure static sealing and a curved part (15) to ensure dynamic sealing, wherein the curved part (15) exhibits a variation in its radius of curvature while retaining the same direction of curvature.
    Type: Grant
    Filed: July 24, 1997
    Date of Patent: February 22, 2000
    Assignee: KSB S.A.
    Inventors: Jacques Peterschmitt, Rene Laulhe, Claude Wattignier
  • Patent number: 6026774
    Abstract: A structure is provided for connecting an intake tube to an intake port of a cylinder head of an internal combustion engine. The connecting structure includes a socket end portion of the intake port, a connecting end portion of the intake tube for insertion into the socket end portion of the intake port, and a seal ring interposed between the connecting end portion of the intake tube and the socket end portion of the intake port. The seal ring has a groove which is open outwardly away from the intake port.
    Type: Grant
    Filed: March 19, 1998
    Date of Patent: February 22, 2000
    Assignee: Daihatsu Motor Co., Ltd.
    Inventors: Yasufumi Kajihara, Akira Shimonishi, Shigenobu Shibuya
  • Patent number: 5984316
    Abstract: A seal assembly is provided for static, rotary and reciprocating sealing between the shaft and the housing. The seal assembly includes a ring seal in the shape of an annulus having a body portion with an inside flange and an outside flange extending longitudinally therefrom. A spring is disposed between the flanges for radially biasing the flanges from one another to effect sealing between the shaft and the housing and a circular band disposed between the spring and the outside flange is provided for maintaining radial force against the outside flange to retain the ring within the housing and provide static sealing between the ring seal and the housing despite shrinkage of the fluoropolymer seal ring.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: November 16, 1999
    Assignee: Bal Seal Engineering Company, Inc.
    Inventor: Peter J. Balsells
  • Patent number: 5899463
    Abstract: A kiss seal (42) of C-shaped cross section is provided. The kiss seal (42) includes a first leg (54), a second leg (56), and an arcuate middle portion (46) extending therebetween. The first leg (54) includes a contact surface (24') positioned adjacent a separable flange (28). The second leg (56) is attached to an opposed attachment flange (18) using a face plate (20') and a number of screws (22). The second leg (56) is generally located directly beneath the first leg (54). During sealing use, the arcuate middle portion (46) extends greater-than-180 degrees and is located outboard of one or both flange outboard edges (31). This provides a resultant force vector (58) that acts to enhance sealing. The greater the pressure (P) on the arcuate middle portion (46), the greater the force vector components available to promote sealing.
    Type: Grant
    Filed: October 25, 1996
    Date of Patent: May 4, 1999
    Assignee: The Boeing Company
    Inventor: William J. Koch
  • Patent number: 5868398
    Abstract: A seal for stator vane segments within a gas turbine engine is provided which includes an axial member and an end member. The axial member includes a central portion and at least one axial joint element extending out from the central portion. The central portion has across-section which includes a pair of substantially u-shaped circumferential ends connected by an arcuate midsection. The axial joint element transitions from the arcuate midsection to a substantially flat end. The end member includes an end joint element attached to a radial portion. The axial and end joint elements contact each other to prevent leakage therebetween, and also sidably cooperate with each other to accommodate misalignment between the axial member and the end member.
    Type: Grant
    Filed: May 20, 1997
    Date of Patent: February 9, 1999
    Assignee: United Technologies Corporation
    Inventors: M. Stefan Maier, Jeffrey S. Taylor
  • Patent number: 5797604
    Abstract: A metal gasket excellent in sealing performance and capable of sealing with a small pressing force. The metal gasket comprises at least one metal sheath with a C-shaped cross-section and a ring elastic core surrounded by the metal sheath. The metal gasket provides a seal upon exertion of a force in the axis center direction. The metal sheath has a locally thin cross-section over the whole annular length, and when the metal sheath subject to a force and deformed, the deflection in the axis direction of the metal sheath due to concentrated stress on the thin worked portion causes the formation projections at both sides of the deflection which projections are pressed onto the sealing face to form air-tight seals.
    Type: Grant
    Filed: December 16, 1996
    Date of Patent: August 25, 1998
    Assignee: CKD Corporation
    Inventors: Toshiyasu Inagaki, Yoshinori Morooka, Akihiro Kojima