Patents by Inventor Robert C. Roos

Robert C. Roos 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: 5632237
    Abstract: A hydraulic lash element compensating assembly mounted in the valve end of a rocker arm or other valve actuating device. The hydraulic last compensating element compensates for any clearance in the engine valve train due to wear and due to thermal expansion. The element includes a self adjusting hydraulic assembly with a cylindrical outer housing having a spherical protrusion on the end facing the valve. A foot is retained by a retainer permanently fixed to the swivel foot and securely attaching the foot to the housing, but allowing angular and rotational movement of the swivel foot relative to the spherical protrusion on the housing. The retainer may be constructed from a thermoplastic material by injection molding or from sheet steel by stamping.
    Type: Grant
    Filed: August 7, 1995
    Date of Patent: May 27, 1997
    Assignee: Hy-Lift Division of SPX Corporation
    Inventors: Richard D. Cornell, Robert C. Roos
  • Patent number: 5320074
    Abstract: A direct acting hydraulic tappet including a one piece body shell having an outer cylinder, an inner cylinder and a plurality of integral axially extending webs that connect the outer cylinder and the inner cylinder. A cam face member is attached to one end of the body. An oil hole extends from the outer surface of the outer cylinder through one of the webs to an inner surface of the inner cylinder. The hydraulic lash compensating unit is positioned in the inner cylinder. The body shell is made from an extruded length of aluminum and is preferably coated with a Teflon impregnated anodized coating. The cam face is made of steel, cast iron or ceramic and is attached to the one end of the body shell by electromagnetic deformation or by the use of adhesive.
    Type: Grant
    Filed: June 17, 1993
    Date of Patent: June 14, 1994
    Assignee: Sealed Power Technologies Limited Partnership
    Inventors: Kraig D. Schultz, Timothy J. Fullmer, Robert C. Roos