Patents Represented by Attorney Edward A. Boeschenstein
  • Patent number: 4819949
    Abstract: A seal assembly for closing the end of a bearing includes a seal and a shield on which the seal is captured. The shield has an axially directed mounting portion, an axially directed overhang and a radial end wall between the mounting portion and overhang. The seal has a pumping labyrinth presented toward the mounting portion, yet spaced from it, a dirt lip directed obliquely toward and contacting the mounting portion, and a secondary lip directed obliquely toward, yet normally spaced from, the overhang, with the dirt lip being between the labyrinth and the secondary lip. The labyrinth is exposed toward the interior of the bearing and has pumping cavities which impel lubricant back into the bearing. Between the dirt and secondary lip is a groove which opens toward the radial wall of the shield, and this groove contains a ring of grease-type lubricant which extends to and adheres against the radial wall, thus forming a barrier to the ingress of contaminants.
    Type: Grant
    Filed: November 23, 1987
    Date of Patent: April 11, 1989
    Assignee: Timken Company
    Inventor: Dennis L. Otto
  • Patent number: D247995
    Type: Grant
    Filed: June 23, 1975
    Date of Patent: May 23, 1978
    Assignee: Quick Point Pencil Co., Inc.
    Inventor: David P. Lage