Patents Represented by Attorney D. W. Tibbott
  • Patent number: 4971459
    Abstract: A bearing arrangement wherein a shaft of uniform diameter is supported in a journal bearing having multiple sections located axially along said shaft at different locations. Each journal bearing section includes a circular journal bore receiving the shaft with the axis of said journal bores being parallel and displaced relative to each other and to the axis of the enclosed shaft in a plane normal to the axis of the shaft.
    Type: Grant
    Filed: March 23, 1990
    Date of Patent: November 20, 1990
    Assignee: Ingersoll-Rand Company
    Inventor: John M. McKenna
  • Patent number: 4893753
    Abstract: A waterjet cutting apparatus for limiting pressure spikes caused by hydraulic pressure surges. A hydraulic pump pressurizes hydraulic fluid used to operate the apparatus. An intensifier is driven by the pump. An on-off nozzle valve actuator is coupled to the pump and to the intensifier. First and second linkages are provided. The second linkage has a lost motion slot formed therein. An output control device is provided in the pump for controlling output from the pump and thus controlling the level of hydraulic fluid pressure admitted to the intensifier. A first control arm is coupled to the output control device and movable between a "MAX" and "MIN" position. An on-off nozzle actuator opens and closes the on-off nozzle valve remotely by way of the first linkage. A second control arm is coupled to the on-off nozzle valve actuator device and is movable between an "ON" and an "OFF" position.
    Type: Grant
    Filed: February 24, 1989
    Date of Patent: January 16, 1990
    Assignee: Ingersoll-Rand Company
    Inventors: Jose P. Munoz, Raymond M. Jordan
  • Patent number: 4894193
    Abstract: The sensor is formed with a polymer body which confines electrical conductors, with the conductors projecting from opposite ends of the body. The conductors' projections at one end define terminal blades, and at the opposite end are shrouded with, and electrically connected by, fusible material that is molded in place. An electrically inert buffer, formed of the same body polymer, is introduced between the conductors at the opposite end, and the fusible material is deposited about the ends and buffer as a cylindrical shell. A V-shaped notch is formed in the buffer for lockingly-engaging the shell. The body has wrenching flats formed thereabout and tapered pipe threads formed thereon to allow its installation in the wall of a pressure vessel, pipe, or housing, with the fusible-material end exposed therewithin.
    Type: Grant
    Filed: September 26, 1988
    Date of Patent: January 16, 1990
    Assignee: Ingersoll-Rand Company
    Inventors: F. William Capp, Don J. Gerhardt, Randal A. Little
  • Patent number: 4892160
    Abstract: A drill pipe transfer arm supports the bottom portion of a drill pipe and positions it in relationship to the drill string to permit angle drilling with a tilted drill tower. The transfer arm is uniquely suited to circular carousels and features a drill pipe conforming saddle which permits close-quarter operation with a packed carousel.
    Type: Grant
    Filed: June 13, 1989
    Date of Patent: January 9, 1990
    Assignee: Ingersoll-Rand Company
    Inventors: George P. Schivley, Jr., Calvin J. Moore, Jr.
  • Patent number: 4890980
    Abstract: A centrifugal pump including a casing containing an impeller mounted on a shaft with a circular shroud fixed on a hub, a plurality of relatively long radial vanes fixed on the shroud and spaced around the hub at equally spaced intervals, a series of shorter vanes extending radially and spaced around the hub with at least two shorter vanes located between each pair of longer vanes, the inner end of each shorter vane being located radially outward from the inner ends of the adjacent longer vanes, each pair of adjacent longer vanes forming between them a single passage extending radially outward from the hub and flowing into at least three smaller passages formed between said pair of adjacent longer vanes and the shorter vanes located between said pair of adjacent longer vanes, and a series of oblong shaped pressure balancing holes located in said shroud and opening into said passages.
    Type: Grant
    Filed: August 8, 1988
    Date of Patent: January 2, 1990
    Assignee: Ingersoll-Rand Company
    Inventors: Charles C. Heald, Trygve Dahl
  • Patent number: 4871301
    Abstract: A centrifugal pump of the "sealless" type including a casing containing a pumping chamber, inlet and outlet, and an impeller mounted on a shaft supported by an independent bearing system. The impeller shaft is driven by a motor located outside of the casing through a set of magnets located on the opposite sides of the wall of the casing and magnetically interconnected together with the motor driving the magnets located on the outside of the casing and with magnets located on the inside of the casing being connected to and driving the pump impeller. The bearing system includes a lubricating system which in some cases will use the pumped fluid as a lubricant and coolant.
    Type: Grant
    Filed: February 29, 1988
    Date of Patent: October 3, 1989
    Assignee: Ingersoll-Rand Company
    Inventor: Frederic W. Buse
  • Patent number: 4771144
    Abstract: An apparatus and process for using a self-aligning bearing having a ball movably seated in a socket mounted in a wall of an explosion-proof enclosure and slidably receiving a shaft for transferring motion from the outside to the electrical equipment inside of the enclosure. The abutting surfaces between the ball and socket of the bearing and the ball and the shaft have minimum flame path lengths to meet minimum safety requirements for extinguishing electrical arcing passing along such abutting surfaces.
    Type: Grant
    Filed: April 30, 1987
    Date of Patent: September 13, 1988
    Assignee: Simmons-Rand Corporation
    Inventor: Wynand M. Goyarts
  • Patent number: 4767277
    Abstract: A molded fiber-filled polymer impeller having a polygon molded hole with machined grooves at the apexes of the polygon and a process for forming such grooves.
    Type: Grant
    Filed: April 17, 1981
    Date of Patent: August 30, 1988
    Assignee: Ingersoll-Rand Company
    Inventor: Fredric W. Buse
  • Patent number: 4767901
    Abstract: An outlet connection device transfers motion from outside to inside an explosion proof enclosure and includes a process for using a self-aligning bearing retained in a wall of the enclosure. The self-aligning bearing has flame paths selected to meet minimum safety requirements and contains a shaft for transferring either rotary, axial or joy-stick motion into the enclosure. In a rotary transfer arrangement an electric rotary switch is connected through a blade engaging the shaft passing through the self-aligning bearing.
    Type: Grant
    Filed: May 4, 1987
    Date of Patent: August 30, 1988
    Assignee: Simmons-Rand Corporation
    Inventor: Wynand M. Goyarts
  • Patent number: 4729157
    Abstract: A wheel puller for use on large wheel and tire assemblies has a plate adapted for attachment to a tire rim. A back plate is spaced apart from this plate and extends across the axis of the wheel hub. Two wedge blocks are placed between the back plate and the wheel hub on either side of the center line of the wheel hub. A driving wedge is inserted between each wedge block and the back plate.In the process of using the wheel puller, the driving wedges are alternately tapped with a light hammer to pull the rim away from the hub. If necessary wedging spacers may be inserted between the driving wedges and the backplate to increase the distance that the wheel rim may be driven off the hub.
    Type: Grant
    Filed: September 17, 1986
    Date of Patent: March 8, 1988
    Assignee: Ingersoll-Rand Company
    Inventor: Alfred D. McCue
  • Patent number: 4295788
    Abstract: The arrangement comprises a turbine wheel having semicircular buckets milled into the periphery thereof and a steam or gas-discharging nozzle operatively associated therewith, according to prior art practices, in which an improved, efficiency-enhancing ratio of bucket radius to nozzle width is set forth, defined and depicted.
    Type: Grant
    Filed: March 10, 1980
    Date of Patent: October 20, 1981
    Assignee: Terry Corporation
    Inventors: Jules L. Dussourd, George W. Pfannebecker
  • Patent number: 4294214
    Abstract: The system comprises a zirconium sensor interposed in the exhaust conduit of a gas-fueled engine for sensing both oxygen content and temperature of the exhaust gases, and for emitting electrical analog signals thereof to a comparator/controller. In turn, the latter transmits a complementary, derivative electrical signal to a current-to-pressure transducer. The transducer is supplied with gas under pressure, from the engine fuel (gas) supply line, and the pressure of this transducer-supplied gas is modulated by the aforesaid derivative signal. The modulated gas pressure is communicated with a gas cylinder, having a translating piston rod, which is operatively engaged with an otherwise standard gas engine regulator for trimming control of the flow of fuel (gas) through the regulator.
    Type: Grant
    Filed: October 20, 1980
    Date of Patent: October 13, 1981
    Assignee: Ingersoll-Rand Co.
    Inventors: Edwin S. Treible, Joseph A. Dopkin, Raymond N. Alford