Patents Represented by Attorney, Agent or Law Firm Bill D. McCarthy
  • Read/write head with side winding slot
    Patent number: 4870520
    Abstract: A read/write head for use in a disk drive and including a head body having a vertically extending core slot that extends longitudinally from a front surface of the head body in near proximity to one side thereof. A side winding slot extends horizontally from the same side to the front surface of the head body at a predetermined angle. A ferrite core member is disposed within the core slot to support a core winding in the side winding slot.
    Type: Grant
    Filed: April 18, 1988
    Date of Patent: September 26, 1989
    Assignee: Magnetic Peripherals Inc.
    Inventor: Stephen H. Shaw
  • Method and apparatus for molding underground diaphragms
    Patent number: 4867240
    Abstract: A method wherein a hole is made in the ground having the depth intended for a diaphragm, the hole being a narrow cylindrical cavity. Into this cavity is successively inserted a drill head including at least one ejection element having its axis aimed in a direction transverse to the axis of the cavity. The head is connected by means of a one-piece flexible tube to elements which supply the substance to be used for reinforcing and waterproofing the ground under pressure to the ejection element. The reinforcing substance is discharged through the ejection element at the same time that the head is drawn toward the surface, the axis of the ejection element being maintained in its oriented position in a controlled manner in a plane perpendicular to the axis of the cavity to form a diaphragm.
    Type: Grant
    Filed: January 22, 1988
    Date of Patent: September 19, 1989
    Assignee: Soil Jet Co., Inc.
    Inventor: Romano Colla
  • Method for writing a tri-phase servo pattern which provides information for positioning the transducers of a magnetic storage device
    Patent number: 4864434
    Abstract: Servo data, including three types of servo patterns distinguishable by phase, are stored in concentric servo tracks on a magnetic information storage disk. Each servo track includes a plurality of only one type of pattern, with consecutive tracks arranged in a repeating sequence of the three servo pattern types. For phase recognition, the pattern types further are arranged in a repeating sequence of angular sectors, each sector having a plurality of but one type of pattern. The servo patterns in a given storage track thus are always angularly offset from the servo patterns in the next adjacent tracks. This permits the use of servo patterns having a radial dimension greater than the separation between adjacent tracks, increasing servo signal reliability and transducer dynamic range.
    Type: Grant
    Filed: November 25, 1988
    Date of Patent: September 5, 1989
    Assignee: Magnetic Peripherals Inc.
    Inventor: Donald W. Janz
  • Shock load detection device
    Patent number: 4862298
    Abstract: A shock load detection device mounted on a disk drive housing of a computer disk drive unit to issue a write-fault signal should the disk drive unit have a mechanical shock imposed thereon. The detection device includes three piezo-electric crystals mounted orthogonally between a base and a seismic mass. Any shock load along x, y, and z axes through the piezo-electric crystals produces an electrical charge which is amplified, filtered, and compared for issuing a write-fault signal. The write-fault signal is used to stop the writing of read/write heads on a spindle of a head disk assembly before the shock imposed thereon could otherwise move the read/write heads off track causing a data error.
    Type: Grant
    Filed: March 11, 1988
    Date of Patent: August 29, 1989
    Assignee: Magnetic Peripherals Inc.
    Inventors: Stephen R. Genheimer, Ken L. Pottebaum
  • Bypass valve for a displacement pump
    Patent number: 4859155
    Abstract: A displacement pump bypass valve having an integral pressure modulator in a piston of the valve, the piston located in a bore formed through the pump housing between the pump inlet and pump outlet, the piston having an internal, cylindrical expansion chamber which fluidly communicates with the pump outlet via an opening formed through one end of the piston. A modulator disc is located in the expansion chamber for axial movement therein to vary the expansion chamber volume, and a spring in the expansion chamber urges the modulator disc toward the opening in the expansion chamber.
    Type: Grant
    Filed: October 21, 1987
    Date of Patent: August 22, 1989
    Assignee: Great Plains Industries, Inc.
    Inventor: Fred L. Laqua
  • Flow meter turbine
    Patent number: 4856348
    Abstract: Improved turbine comprising plural turbine blades supported by a turbine rotor of a flow meter, each turbine blade having a rounded leading edge, a feathered trailing edge, a convave top blade surface and a convex bottom blade surface, the turbine blade tapered from the leading edge to the trailing edge to form a hydrofoil shape defined by empirical profile date.
    Type: Grant
    Filed: September 21, 1987
    Date of Patent: August 15, 1989
    Assignee: Great Plains, Industries, Inc.
    Inventor: Robert E. Hall
  • Herbicide dispenser
    Patent number: 4856683
    Abstract: A dispensing system including a tank and a constant displacement pump mounted on the tank for dispensing liquid from the tank. Liquid is withdrawn from the tank via an adapter mounted in the tank bung and having two concentric tubular members, the inner of which receives a tube connected to the pump inlet. A standpipe extends downwardly from the inner tubular member so that liquid is withdrawn from lower portions of the tank. A bypass bore, containing a pressure relief valve, is formed in the pump body between the pump outlet and a recirculation port to return liquid from the pump outlet to the recirculation port when a valve on a delivery line from the pump is closed. The recirculation port is fluidly connected to the outer tubular member of the adapter to return the liquid to the tank.
    Type: Grant
    Filed: December 31, 1987
    Date of Patent: August 15, 1989
    Assignee: Great Plains Industries, Inc.
    Inventor: Brook J. Beaston
  • Tiltable bed frame assembly
    Patent number: 4856129
    Abstract: A tiltable bed frame assembly is provided which permits one to adjust the angular disposition of a mattress between a horizontally disposed position and an inclined position, while at the same time permitting one to utilize a conventional mattress, headboard and footboard of a bedroom suit. The tiltable bed frame assembly comprises a main frame and a mattress frame interconnected by a plurality of telescoping members and pivoting support members disposed between the main frame and the mattress frame. The telescoping members are connected by a linkage assembly so that the mattress frame can be pivotally moved between the horizontally disposed position and the inclined position. A locking assembly is supported by the main frame for selectively engaging the linkage assembly and thereby securing the mattress frame in the desired position relative to the main frame.
    Type: Grant
    Filed: December 28, 1987
    Date of Patent: August 15, 1989
    Inventor: Wilbur T. Butler
  • Coupling device
    Patent number: 4844408
    Abstract: A coupling device comprised of a male unit and a female unit used to connect and disconnect flow conducting members. The barrel of the male unit is inserted into the barrel of the female unit when the device is operatively engaged. When so engaged, the respective output ports of the male and female units are indexed. The male input port and the female output port can then be connected to respective flow conducting members so that fluid flow is facilitated.
    Type: Grant
    Filed: April 11, 1988
    Date of Patent: July 4, 1989
    Assignee: Great Plains Industries, Inc.
    Inventor: Brook J. Beaston
  • Polyester resin compositions
    Patent number: 4841016
    Abstract: An additive composition for enhancing curing and color clarity properties of polyester resins. The additive comprises from about 50 to 75 parts by weight of a mercaptan, and from about 50 to about 25 parts by weight of a quaternary ammonium salt. From about 0.5 to about 25 parts by weight of a polymerization initiator can be incorporated into the additive when the polyester resin is utilized as a gel coat. Resinous compositions formulated with the additive consist essentially of from about 50 to about 99.5 parts by weight of a polyester resin, from about 0.5 to about 35 parts by weight of the mercaptan, from about 0.1 to about 15 parts by weight of the quaternary ammonium salt, and a minor effective amount of an oxidizing agent for the polyester resin.
    Type: Grant
    Filed: March 16, 1988
    Date of Patent: June 20, 1989
    Inventor: Bill R. Edwards
  • Trailer air grill
    Patent number: 4840422
    Abstract: A trailer air grill mounted in a front and opposing side walls of a trailer and having a front intake air grill with louvers in the front wall which direct the airflow at an angle toward the side wall discharge air grills. An interior V-shaped deflector barrier centered at the back of the front intake air grill further enhances the deflection of the airflow to the side wall discharge air grills.
    Type: Grant
    Filed: January 4, 1988
    Date of Patent: June 20, 1989
    Inventor: Thomas H. Engel
  • Rolling travois
    Patent number: 4838565
    Abstract: A rolling travois for pulling camping supplies and the like behind an individual, the rolling travois comprising an elongated support frame having one end mounted on a single enlarged roller made up of a plurality of individual cylindrical disks. The other end of the support frame has an outwardly extending tongue pivotally attachable to a backpack frame worn by the individual pulling the rolling travois.
    Type: Grant
    Filed: December 8, 1987
    Date of Patent: June 13, 1989
    Assignee: Douglas & Douglas, Inc.
    Inventors: George V. Douglas, Vivian T. Douglas
  • Membrane supported reroofing system
    Patent number: 4835917
    Abstract: An improved roof system in which an elastomeric flexible membrane is disposed as a protective roof layer over roofing members supported by adjustable roofing support spacers over a preexisting roof. Strips of the membrane are joined together by hidden fastener assemblies which sealingly grip adjacent membrane edges and which attach the membrane to the underlying support spacers.
    Type: Grant
    Filed: November 4, 1986
    Date of Patent: June 6, 1989
    Assignee: Harold Simpson, Inc.
    Inventor: Harold G. Simpson
  • Method and device for reading a document character
    Patent number: 4827531
    Abstract: A method and device for reading and recognizing an unknown character on a document, the device measuring the character's waveform amplitude along timed intervals and determining that each measurement is within a predetermined acceptable amplitude range at each interval for an ideal character. If all of the measurements of the amplitude are within the acceptable ranges, a recognition signal of the character is generated.
    Type: Grant
    Filed: April 29, 1987
    Date of Patent: May 2, 1989
    Assignee: Magnetic Peripherals Inc.
    Inventor: Richard E. Milford
  • Smoke suppressant apparatus for flare gas combustion
    Patent number: 4824361
    Abstract: An improved smoke suppressant apparatus for flare gas combination comprising a flare housing and a liner cylinder member coaxially disposed therewithin, an annular orifice channel formed between the liner cylinder and the flare housing. A first flare conduit is in fluid communication with the orifice channel and a first flare gas portion passing through the flare conduit is discharged from the orifice channel at the upper end of the flare housing as a perimeter zone discharge configured as a relatively thin cylindrical layer of flare gas. A second flare conduit may be provided in fluid communication with the inner core of the liner cylinder to discharge a second flare gas portion therethrough as an inner zone discharge, and a liquid seal is provided to permit flare gas to pass via the second flare conduit only when the pressure of the inlet flare gas exceeds a predetermined value.
    Type: Grant
    Filed: April 18, 1983
    Date of Patent: April 25, 1989
    Assignee: McGill Incorporated
    Inventors: Eugene C. McGill, Robert L. Rawlings
  • Method for controlling electroless magnetic plating
    Patent number: 4810520
    Abstract: An improved method for controlling magnetic quality of electroless plating in which the plated substrates are subjected to magnetic film deposition for a true plating time determined by offsetting the total plating time by the activation time, the activation time being the time for surface potential transients to decrease and steady state surface potential to occur.
    Type: Grant
    Filed: September 23, 1987
    Date of Patent: March 7, 1989
    Assignee: Magnetic Peripherals Inc.
    Inventor: Cherng-Dean Wu
  • Animal drinking fountain
    Patent number: D300477
    Type: Grant
    Filed: July 7, 1988
    Date of Patent: March 28, 1989
    Inventor: William G. Terbush
  • House structure
    Patent number: D300562
    Type: Grant
    Filed: May 6, 1986
    Date of Patent: April 4, 1989
    Assignee: Edgar B. Wilson, Inc.
    Inventor: Ronald J. Wilson
  • Flowmeter
    Patent number: D301988
    Type: Grant
    Filed: October 14, 1988
    Date of Patent: July 4, 1989
    Assignee: Great Plains Industries, Inc.
    Inventors: Richard M. Kruse, Jeffrey J. Williams
  • Tubine rotor
    Patent number: D302396
    Type: Grant
    Filed: April 27, 1987
    Date of Patent: July 25, 1989
    Assignee: Great Plains Industries, Inc.
    Inventor: Robert E. Hall