Patents Represented by Attorney Mitchell J. Hill
  • Patent number: 4009602
    Abstract: A hand bender tool for bending tubes, pipes, conduits and other tubular material, and which is provided with raised indicators on a bending shoe and handle socket that coact with a conical sighting indicator disposed in a position above the shoe, to allow an operator to accurately bend a pipe to a desired angle of bend. A contoured foot treadle is provided with serrations which prevent slippage of the foot of an operator during a bending operation, so as to permit the operator to employ leg power to the fullest advantage.
    Type: Grant
    Filed: October 14, 1975
    Date of Patent: March 1, 1977
    Assignee: Greenlee Brothers and Co.
    Inventor: Wayne A. Linquist
  • Patent number: 3998011
    Abstract: A honing tool having an elongated tubular body adapted to be supported for rotational movement about a longitudinal axis in a bore of a workpiece, and adapted for reciprocation in said bore. A transverse slot is formed in said body for the reception of a pair of diametrically disposed honing stones, and wherein the outer face is convexly formed. A spring biased retainer means is mounted in said body for individually retaining each of said honing stones longitudinally in said body. An expansion wedge-like cam means is operatively mounted in said body for pushing the honing stones outwardly into an operative honing engagement with the surface of a bore in a workpiece. Each of the honing stones includes an elongated, inverted T-shaped holder having a raised central front portion and which is formed with a rear flat face in which is formed at least one rectangularly shaped recess that communicates with an inclined expansion angle or inclined surface.
    Type: Grant
    Filed: October 6, 1975
    Date of Patent: December 21, 1976
    Assignee: Ex-Cell-O Corporation
    Inventor: William G. Corley
  • Patent number: 3987591
    Abstract: A honing tool having an elongated tubular body adapted to be supported for rotational movement about a longitudinal axis in a bore of a workpiece, and adapted for reciprocation in said bore. The tubular body has a reduced diameter lower end on which is slidably mounted a symmetrical, reversible body shell which is secured to said body by a pair of symmetrical, reversible drive keys and a retainer end plug. A plurality of transverse and longitudinally extended slots are formed through the body shell and the reduced diameter lower end of the body, at evenly spaced radial positions, for the reception in each of the slots of a single honing stone which has an outer face that is convexly formed. A stone expander is operatively mounted in each of said slots, against the inner side of the honing stone in each respective slot, for pushing the honing stones outwardly into operative engagement with a bore to be finished.
    Type: Grant
    Filed: January 26, 1976
    Date of Patent: October 26, 1976
    Assignee: Ex-Cell-O Corporation
    Inventor: Albin Stanley Czubak
  • Patent number: 3949584
    Abstract: An electric driven portable conduit bender provided with a bending shoe which is rotatably mounted on a horizontal axis and including a roller support unit mounted on the bender frame and retained with a quick-release pin. The rollers in the roller support unit are rotated to match the size of conduit.
    Type: Grant
    Filed: December 23, 1974
    Date of Patent: April 13, 1976
    Assignee: Greenlee Bros. & Co.
    Inventors: Vernon W. Pearson, Larry G. Adleman
  • Patent number: 3939944
    Abstract: The disclosure relates in general to an oil-mist lubrication system, and more particularly to the propagation of a mixture of oil-mist to bearings of a spindle, wheelhead, or the like by means of a blender-distributor unit. A first controlled amount of air from an air supply unit is fed through an oil-mist unit to produce a controlled high density oil mist. A second controlled amount of air from the air supply unit bypasses the oil-mist unit and is fed into an air chamber of a blender distributor unit. The high density oil mist is also fed into an oil-mist chamber of the blender distributor unit. A plurality of blending nozzles in the distributor unit extend from the exit side of the air chamber. A like plurality of tubes extend from the exit side of the oil-mist chamber of the distributor unit, each tube mounted coaxially within a respective nozzle whereby the blending area of the exit end of each tube within the nozzle produces a lower density oil-mist to be carried to the bearings.
    Type: Grant
    Filed: July 24, 1974
    Date of Patent: February 24, 1976
    Assignee: Bryant Grinder Corporation
    Inventors: William A. Mitchell, Charles V. Thayer