Patents by Inventor Donald J. Davidson

Donald J. Davidson 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: 6057122
    Abstract: Mammalian kringle 5 fragments and kringle 5 fusion proteins are disclosed as a compounds for treating angiogenic diseases. Methods and compositions for inhibiting angiogenic diseases are also disclosed.
    Type: Grant
    Filed: May 5, 1997
    Date of Patent: May 2, 2000
    Assignee: Abbott Laboratories
    Inventor: Donald J. Davidson
  • Patent number: 5981484
    Abstract: Mammalian kringle 5 peptide fragments are disclosed for treating angiogenic diseases Methods and compositions for inhibiting angiogenic diseases are also disclosed.
    Type: Grant
    Filed: April 3, 1997
    Date of Patent: November 9, 1999
    Assignee: Abbott Laboratories
    Inventor: Donald J. Davidson
  • Patent number: 5972896
    Abstract: Mammalian kringle 5 fragments are disclosed as a compounds for treating angiogenic diseases. Methods and compositions for inhibiting angiogenic diseases are also disclosed.
    Type: Grant
    Filed: August 11, 1998
    Date of Patent: October 26, 1999
    Assignee: Abbott Laboratories
    Inventor: Donald J. Davidson
  • Patent number: 5801146
    Abstract: Mammalian kringle 5 is disclosed as a compound for treating angiogenic diseases. Methods and compositions for inhibiting angiogenic diseases are also disclosed.
    Type: Grant
    Filed: May 3, 1996
    Date of Patent: September 1, 1998
    Assignee: Abbott Laboratories
    Inventor: Donald J. Davidson
  • Patent number: 4781272
    Abstract: The invention relates to a friction pad for a disc brake and a disc brake assembly in which the friction pads are slidably supported by tabs extending radially outward of the friction pad backing plates on spaced axially extending, stepped edges of an aperture provided to the disc brake caliper. The friction pad tabs include support surfaces or shoulders which are non-symmetrical and permit the tabs to be assembled only when properly oriented.
    Type: Grant
    Filed: July 8, 1985
    Date of Patent: November 1, 1988
    Assignee: Rockwell International Corporation
    Inventors: David D. Sheill, Donald J. Davidson, David J. Dettloff
  • Patent number: 4727964
    Abstract: An air disc brake assembly having a shortened end cap and an integral air chamber bracket is provided. The shortened end cap is bolted to an end of the air cylinder which is opposite the end from which the piston extends. An air cylinder support portion is integral with the end cap and extends from the outer surface. This support portion has a plate with a recessed central portion and two end lobes for receiving air cylinder mounting bolts. A supporting web extends between the angular flange and the outer wall of the end cap to support the air cylinder. The end cap has stepped cylindrical surfaces to receive bearings and a fluted plan form.
    Type: Grant
    Filed: October 8, 1986
    Date of Patent: March 1, 1988
    Assignee: Rockwell International Corporation
    Inventors: James L. Weber, Donald J. Davidson
  • Patent number: 4618034
    Abstract: Brake shoes for a disc brake assembly are held radially inward against ledge areas in a caliper and its support plate by plates bolted to the caliper. The plates extend axially and include first bolt receiving lateral portions and second brake shoe hold down portions which are angularly related. The angle is greater than a corresponding angle between the outer surfaces of the brake shoes and the bolt receiving surface in the caliper so that the brake shoes are pressed downward against the ledge as the bolts are tightened. One retention plate has an additional angularly related portion which urges the brake shoes in the direction of normal rotation of the disc.
    Type: Grant
    Filed: March 18, 1985
    Date of Patent: October 21, 1986
    Assignee: Rockwell International Corporation
    Inventors: James L. Weber, Donald J. Davidson
  • Patent number: 4548300
    Abstract: In a vehicle disc brake, a friction pad having a radially outer portion supported by a slidably mounted caliper is stabilized by engaging a radially inner portion of the friction pad backing plate with an adjacent depending leg of the caliper.
    Type: Grant
    Filed: August 31, 1983
    Date of Patent: October 22, 1985
    Assignee: Rockwell International Corporation
    Inventors: David D. Sheill, Donald J. Davidson, David J. Dettloff
  • Patent number: 4527668
    Abstract: In a vehicle disc brake, a friction pad having a radially outer tab slidably supported on circumferentially spaced edges of a caliper aperture and biased against a force transmitting plate by a spring seated against the heads of fasteners secured to the force transmitting plate and having shanks extending through apertures in the backing plate tab which permit lateral movement of the friction pad relative to the force transmitting plate.
    Type: Grant
    Filed: August 31, 1983
    Date of Patent: July 9, 1985
    Assignee: Rockwell International Corporation
    Inventor: Donald J. Davidson
  • Patent number: 4503946
    Abstract: An improved braking piston for a disc brake is of the type which includes a disc mounted for rotation about an axle and a brake housing mounted on the axle in alignment with a friction surface of the disc. The braking piston has an interior end at least partially mounted within the housing and an external end outwardly of the housing adjacent the friction surface of the disc. A powershaft is mounted within the housing in coaxial alignment with the braking piston and is capable of selective rotation by an air disc brake actuator mounted on the housing. The powershaft has worm gear teeth engaged with mating teeth on the interior end of the braking piston.
    Type: Grant
    Filed: August 31, 1983
    Date of Patent: March 12, 1985
    Assignee: Rockwell International Corporation
    Inventors: Donald J. Davidson, David D. Sheill
  • Patent number: 4502572
    Abstract: An improved disc brake is of the type which includes a disc mounted for rotation about an axle. An axle housing is mounted on the axle in alignment with a friction surface of the disc. An axially movable braking piston has an interior end at least partially mounted within the housing and an external end outwardly of the housing adjacent the friction surface of the disc. The braking piston has a plurality of axially extending splines about an exterior surface of the interior end to mate with corresponding splines on an interior surface of the housing to limit rotation of the braking piston relative to the housing. The brake is actuated by the piston being axially moved toward and away from the friction surface of the disc. Lubricant can be supplied and periodically resupplied to an interior of the housing. The improvement includes providing the housing with a cylindrical recess at the end thereof adjacent the disc for receipt of a sealing ring made of resiliently compressible material.
    Type: Grant
    Filed: August 31, 1983
    Date of Patent: March 5, 1985
    Assignee: Rockwell International Corporation
    Inventors: Donald J. Davidson, David D. Sheill
  • Patent number: 4478316
    Abstract: A slack adjuster is for a disc brake of the type which includes a disc mounted for rotation about an axle and a caliper brake having a housing mounted on the axle in alignment with a friction surface of the disc. A braking piston is mounted in the housing for axial movement toward and away from the friction surface of the disc. Brake actuation produces rotation of a powershaft mounted in the housing which will in turn produce a corresponding axial movement of the braking piston through a non-rotating powershaft nut. An adjusting sleeve between the piston and the powershaft nut is threadably coupled to the piston and capable of rotation in a first direction relative thereto to adjust the axial position of the piston toward the disc. A clearance sensing ring is mounted about the adjusting sleeve for axial movement therewith and has an angled groove in its outer surface for receipt therein of a cam pin which is secured to the housing.
    Type: Grant
    Filed: April 11, 1983
    Date of Patent: October 23, 1984
    Assignee: Rockwell International Corporation
    Inventor: Donald J. Davidson