Patents Assigned to MPB Corporation
  • Patent number: 5352046
    Abstract: A rolling element bearing includes a first ring having a first raceway; a second ring having a second raceway, and rolling elements between the two raceways. The first and second rings are positioned and configured so that the first and second raceways form a channel which retains the rolling elements. A first zinc alloy plated layer is on the first ring including at the first raceway, and a second zinc alloy plated layer is on the second ring including at the second raceway. The rolling elements may also be plated with a zinc alloy layer. The layers are porous and thus permit hydrogen to escape from the rings and rolling elements when baked, so that the rings and rolling elements possess low hydrogen embrittlement. The layers provide physical and galvanic protection to the underlying substrates for the rings.
    Type: Grant
    Filed: July 31, 1992
    Date of Patent: October 4, 1994
    Assignee: MPB Corporation
    Inventor: Peter C. Ward
  • Patent number: 5215386
    Abstract: A gimbal assembly including a first gimbal element; a second gimbal element located within the first gimbal element; a bearing assembly comprising a trunnion, the bearing assembly mounted between the first and second gimbal elements for supporting the second element within the first element in a manner to permit pivoting of the second element within the first element; and an adhesive layer bonding the trunnion to the second gimbal element.
    Type: Grant
    Filed: November 26, 1991
    Date of Patent: June 1, 1993
    Assignee: MPB Corporation
    Inventor: Barry O'Dwyer
  • Patent number: 5052824
    Abstract: A self-aligning bearing including a first member having a convex bearing surface and a second member having a concave seat that receives the convex bearing surface of the first member, the second member also having a compliant relief region aligned with and spaced apart from the concave seat, the relief region serving to permit deflection of the second member in response to loading on the first member.
    Type: Grant
    Filed: January 9, 1991
    Date of Patent: October 1, 1991
    Assignee: MPB Corporation
    Inventor: J. Derek Van Wyk
  • Patent number: 4956571
    Abstract: A superconducting magnetic bearing assembly has an outer element having an axis. Disposed about the axis, the outer element has first and second inverted generally conical surfaces, each surface disposed at an acute angle to the axis. These surfaces define a volume. Fixedly disposed within the volume is an inner element rotatable relative to the outer element. The inner element has first and second conical inner elements. The first conical inner element has a first surface opposed to and spaced from said first generally conical surface of the outer element, the opposed first surfaces lying generally parallel to each other. The second conical inner element has a second surface opposed to and spaced from the second generally conical surface of the outer element, the opposed second surfaces lying generally parallel to each other.
    Type: Grant
    Filed: March 1, 1989
    Date of Patent: September 11, 1990
    Assignee: MPB Corporation
    Inventors: Keith M. Gordon, Robert A. Hanson
  • Patent number: 4788758
    Abstract: A method of forming a ball bearing assembly capable of withstanding, in a non-operating mode, an axial load exceeding a predetermined axial load at which bearing damage would otherwise occur includes the following steps: assembling a bearing assembly with at least one set of annular bearing races and, disposed therebetween, a multiplicity of balls, each race having a face surface aligned transversely to the axis of rotation of the bearing assembly, (b) mounting the bearing with the first race fixed axially, (c) applying an axially directed load against the second race of a predetermined magnitude selected to be greater than the intended operating preload and less than a bearing damaging load, (d) grinding the face surfaces of the bearing races flush, (e) releasing the force, and (f) in operating condition, providing a stop ring having a flat stop face surface opposed to the face surfaces of the bearing races, the face surface of the first bearing race disposed in engagement with the stop face surface and the
    Type: Grant
    Filed: September 24, 1987
    Date of Patent: December 6, 1988
    Assignee: MPB Corporation
    Inventors: Keith M. Gordon, Michael L. Blair
  • Patent number: 4729239
    Abstract: The invention is directed to a miniature ball bearing tester which detects vibrations therefrom when such a bearing is rotated by a rotor. The device includes a base upon which are supported reeds. The reeds support an upper housing tooling which includes a bearing support for mounting a bearing thereon for rotation. A rotor is attachable to a bearing mounted on the upper tooling. The rotor is then driven to rotate the bearing and upon a defect being detected, the reeds are as a result forced to move in a direction radial with respect to the axial direction of the bearing. An accelerometer picks up the movement and the signal therefrom is then band pass filtered, integrated to obtain a velocity measurement and output by, for example, a speaker to detect any frequencies resulting from a flaw in the miniature bearing.
    Type: Grant
    Filed: December 19, 1986
    Date of Patent: March 8, 1988
    Assignee: MPB Corporation
    Inventor: Keith M. Gordon
  • Patent number: 4107239
    Abstract: The admixture of the tri(hydromethacrylate) of tris(dimethylaminomethyl)phenol with conventional monomer and polymer components of vinylpolymerizable liquid sealants yields compositions which have accelerated cure times and superior adhesion.
    Type: Grant
    Filed: November 25, 1975
    Date of Patent: August 15, 1978
    Assignee: MPB Corporation
    Inventor: Bruce Leffingwell
  • Patent number: RE35860
    Abstract: A rolling element bearing includes a first ring having a first raceway; a second ring having a second raceway, and rolling elements between the two raceways. The first and second rings are positioned and configured so that the first and second raceways form a channel which retains the rolling elements. A first zinc alloy plated layer is on the first ring including at the first raceway, and a second zinc alloy plated layer is on the second ring including at the second raceway. The rolling elements may also be plated with a zinc alloy layer. The layers are porous and thus permit hydrogen to escape from the rings and rolling elements when baked, so that the rings and rolling elements possess low hydrogen embrittlement. The layers provide physical and galvanic protection to the underlying substrates for the rings.
    Type: Grant
    Filed: October 1, 1996
    Date of Patent: July 28, 1998
    Assignee: MPB Corporation
    Inventor: Peter C. Ward