Patents Assigned to Microhydraulics, Inc.
  • Actuator
    Patent number: 6182942
    Abstract: An electromagnetic actuator has an armature assembly including a pair of spaced plate springs to locate the magnetic core radially. The springs are formed from concentric rings interconnected by radial bridges so that flexure of the spring does not cause radial displacement. A single coil or double coil may be used and each coil is supported on a pair of bobbins. One bobbin overlies the core and the other has a recess to receive part of the core to maintain a uniform air gap between the core and bobbin.
    Type: Grant
    Filed: March 12, 1998
    Date of Patent: February 6, 2001
    Assignee: Microhydraulics, Inc.
    Inventor: George Kadlicko
  • Flow transducer
    Patent number: 5827978
    Abstract: A flow transducer includes a piston movable in a sleeve to vary the area of an orifice. The piston may move in either direction from a position in which flow is prevented. Movement in both directions is opposed by a spring. The piston assumes a unique position for each flow rate and the position of the transducer is sensed to provide a signal indicative of low rate.
    Type: Grant
    Filed: May 13, 1996
    Date of Patent: October 27, 1998
    Assignee: Microhydraulics, Inc.
    Inventor: George Kadlicko
  • Diagnostic device for hydraulic circuit
    Patent number: 5747702
    Abstract: A diagnostic device for a hydraulic circuit includes a flow transducer to provide an indication of flow rate, a pressure transducer to provide a signal indicative of pressure, and a temperature transducer to provide a signal indicative of temperature. Each transducer provides an output signal calibrated by look-up tables stored in an integrated circuit located in the device.
    Type: Grant
    Filed: February 6, 1996
    Date of Patent: May 5, 1998
    Assignee: Microhydraulics, Inc.
    Inventor: George D. Kadlicko
  • Variable delivery swash plate pump having a piston located spill port
    Patent number: 5603609
    Abstract: An axial piston pump has multiple pistons and cylinders with a spill port in each piston. A sleeve controls venting from the spill port and an inlet is provided to each cylinder, by way of a check valve from a fluid supply.
    Type: Grant
    Filed: August 17, 1995
    Date of Patent: February 18, 1997
    Assignee: Microhydraulics, Inc.
    Inventor: George Kadlicko
  • Pressure transducer with pressure sensitive conductor
    Patent number: 5594405
    Abstract: A pressure transducer has a cylindrical body with a thread formed on at least part of the outer surface. A resistance element is wound in the thread and an internal bore receives pressurized fluid. The resistance element is strained by application of pressure to vary its resistance.
    Type: Grant
    Filed: August 26, 1994
    Date of Patent: January 14, 1997
    Assignee: Microhydraulics, Inc.
    Inventor: George Kadlicko