Patents by Inventor Cormac G. O'Neill

Cormac G. O'Neill 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: 6040653
    Abstract: A piezoelectric positioner. First and second piezoelectric stacks are mounted on a rigid frame. A T-lever defining a yoke and a lever arm is disposed so that the yoke overlies the piezoelectric stacks. A compression element is position so as to hold in compression both stacks in-between the frame and the yoke. A programmable voltage source is programmed to provide elongating voltages alternatingly to the first and the second stacks to cause the stacks to alternatingly expand against compressive forces produced by the compression element so as to cause the yoke to rock back and forth and to cause the T-lever arm to swing back and forth. A tool beam is flexibly connected to the T-lever arm. A tool beam restraint restrains movement of the tool beam to back and forth motion in a single direction. In a preferred embodiment a tool is mounted on the tool beam.
    Type: Grant
    Filed: June 15, 1998
    Date of Patent: March 21, 2000
    Assignee: Kinetic Ceramics, Inc.
    Inventor: Cormac G. O'Neill
  • Patent number: 5925969
    Abstract: Ferroelectric transducers each including two cooperating, identically polarized ferroelectric stacks which are excited in opposite polarity. Each transducer includes a yoke assembly for sensing the respective expansions and contractions of the two ferroelectric stacks, mechanically adding these respective expansions and contractions, and applying the sum thereof to a pair of elongated T-levers, which T-levers serve to displace the output element of the transducer.
    Type: Grant
    Filed: October 17, 1996
    Date of Patent: July 20, 1999
    Inventor: Cormac G. O'Neill
  • Patent number: 4724801
    Abstract: A fluidic valve-operating system has a reciprocally-movable plunger for moving a valve of an internal combustion engine between closed and opened conditions. A main circuit has feed and return paths for flow of hydraulic fluid from a reservoir to the plunger and a pump interposed in the feed path and driven by the engine. A breather circuit has feed and return paths for flow of hydraulic fluid from an accumulator to the plunger. A control valve interposed in the feed and return paths of the respective main and breather circuits is actuatable by a piezoelectric valve for switching each of the main and breather circuits between pressure supply and return flow modes with respect to the plunger. The main circuit when switched to its pressure supply mode applies a drive pressure to the plunger which varies proportionally with the speed of the engine to accelerate the plunger along a drive stroke to move the valve form its closed toward its opened condition.
    Type: Grant
    Filed: January 15, 1987
    Date of Patent: February 16, 1988
    Assignee: Olin Corporation
    Inventor: Cormac G. O'Neill
  • Patent number: 4643155
    Abstract: A fuel injection control system for an internal combustion engine utilizes a fuel injection pump in which the pump cylinder is in fluid communication with the fuel injection nozzle and a piezoelectric actuated spill valve. A cam drive actuates the pump piston to achieve a constant velocity during the pumping cycle (constant velocity relative to degrees of rotation of the engine crankshaft). An index wheel connected to either the engine crankshaft or the pump camshaft is used in conjunction with an initial position detector, angular position detector and a pump control unit to close and open the spill valve at predetermine positions of the pump piston during the pumping cycle. The pump control unit includes a computer connected to various engine parameter transducers to adjust the closing and opening of the spill valve to achieve a desired fuel injection volume.
    Type: Grant
    Filed: October 5, 1984
    Date of Patent: February 17, 1987
    Assignee: Olin Corporation
    Inventor: Cormac G. O'Neill
  • Patent number: 4397285
    Abstract: A method and apparatus for achieving optimized efficiency combustion in a diesel internal combustion engine utilizes a cylinder pressure detector which measures peak cylinder pressure relative to crankshaft timing and compares it with a speed-load-timing map comprising several engine parameters including engine speed and engine load in order to compensate for various unknown combustion characteristics of the fuels to be used in compression ignition engines, and automatically adjusts fuel injection timing for optimum efficiency.
    Type: Grant
    Filed: July 15, 1981
    Date of Patent: August 9, 1983
    Assignee: Physics International Company
    Inventor: Cormac G. O'Neill
  • Patent number: 4325340
    Abstract: A fuel injection system wherein the fuel pressure can be varied or adjusted n accordance with different engine loading conditions. The system includes an accumulator and a source of high-pressure gas for raising the accumulator pressure in accordance with step increases in the fuel pressure. A pressure-operated piston valve is provided to communicate the accumulator with the gas pressure source or with an atmospheric vent, as necessary to raise or lower the accumulator pressure.
    Type: Grant
    Filed: July 21, 1980
    Date of Patent: April 20, 1982
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Cormac G. O'Neill
  • Patent number: 4318023
    Abstract: An electroexpansive linear actuator utilizes a sagittal tension member to amplify linear motion in which the electroexpansive member is placed in compression between a fixed base support and a lever support member hingedly connected to the fixed base. One end of the sagittal tension member is attached to the fixed base while the other end is attached to the lever support member distal the hinge point. The device to be actuated is connected proximate the midpoint of the sagittal tension member and moves perpendicular to the longitudinal axis of the sagittal tension member when the electroexpansive member expands and contracts. A second embodiment of the actuator utilizes a second lever support arm instead of the fixed base as a bearing support for the other end of the electroexpansive member.
    Type: Grant
    Filed: February 21, 1980
    Date of Patent: March 2, 1982
    Assignee: Physics International Company
    Inventors: Cormac G. O'Neill, Parker C. Smiley
  • Patent number: 4271989
    Abstract: A housing having an inlet port and an outlet port utilizes a variable volume cavity connected to the housing and includes a device for limiting the volume of the cavity which is alternately filled through the inlet port and exhausted through the outlet port using a spool valve. The spool valve is arranged to prevent continuous communication of fluid between the inlet and outlet ports. The volume of the variable volume cavity can be varied using electro-expansive or piezoelectric apparatus. The spool valve is reciprocated between the inlet and outlet ports using an electromechanical device and a motion amplifier.
    Type: Grant
    Filed: March 27, 1979
    Date of Patent: June 9, 1981
    Assignee: Physics International Company
    Inventors: Cormac G. O'Neill, Parker C. Smiley
  • Patent number: 4219755
    Abstract: An electromotive actuator comprises a hollow cylinder within which is an electroexpansive body having attached to each end a metal cup with slotted sides. Inside of each cup there is positioned an electroexpansive disc which, in the absence of excitation, causes the slotted sides, which are called fingers hereinafter, to bend outward, and in the presence of excitation enables them to return to their original position. In the absence of excitation the fingers clamp tightly against the inner surface of the cylinder and in the presence of excitation they spring inwardly and release that surface. By sequencing the excitation of the respective discs and the central body in one embodiment of the invention, the assembly can be made to move in either direction and thereby move an externally extending rod. In another embodiment of the invention, by properly sequencing the excitation of the discs and central body, high torque and fine angular resolution may be obtained.
    Type: Grant
    Filed: March 18, 1977
    Date of Patent: August 26, 1980
    Assignee: Physics International Company
    Inventors: Cormac G. O'Neill, Charles E. Foster
  • Patent number: 4141675
    Abstract: A fuel pump for providing fuel at relatively high pressure is activated by gas pressure, created during the compression stroke of an internal combustion engine. The pump includes a piston and a hollow plunger which are biased by a single spring in opposite directions. The piston, which is exposed to gases in the engine's cylinder, is urged, by the gas pressure in the cylinder during the compression stroke, to move upwardly. A limit is placed on the piston's upward stroke. When reaching the upward limit the pressure which is applied to fuel in a fuel chamber is only a function of the force applied by the spring to the plunger. When fuel ejection is enabled, the spring pushes the plunger toward the fuel chamber to eject the fuel therefrom. Toward the end of the exhaust stroke the piston moves toward the engine cylinder, forcing the plunger to move in the same direction until the latter's travel is limited by limiting means. Fuel is then injectable into the fuel chamber for subsequent ejection.
    Type: Grant
    Filed: December 8, 1977
    Date of Patent: February 27, 1979
    Assignee: Physics International Company
    Inventor: Cormac G. O'Neill
  • Patent number: 4098560
    Abstract: A fuel injection system for an internal combustion engine is described, which provides for independent, flexible control of timing as well as quantity of fuel injected. The system is programmable for torque shaping and adaptable to a wide range of engine sizes. It uses piezoelectric valves for controlling injection timing, a shuttle, fuel meter and a gas driven high pressure pump for injecting the fuel into the cylinders.
    Type: Grant
    Filed: December 22, 1975
    Date of Patent: July 4, 1978
    Assignee: Physics International Company
    Inventor: Cormac G. O'Neill
  • Patent number: 4011474
    Abstract: By filling the container of a piezoelectric stack with a dielectric fluid under sufficient pressure, or applying sufficient pressure to a solid dielectric, to maintain dielectric particle velocity and piezoelectric particle velocity substantially spaced, dielectric breakdown with consequent arc over and destruction of the piezoelectric stack is prevented.
    Type: Grant
    Filed: December 19, 1975
    Date of Patent: March 8, 1977
    Assignee: PZ Technology, Inc.
    Inventor: Cormac G. O'Neill