Patents Assigned to SPX Corp.
  • Patent number: 5617771
    Abstract: An auto cycle pump in accordance with the invention includes a housing having a reservoir for storing hydraulic fluid. A hydraulic pump in the housing provides hydraulic flow. A directional valve has neutral, advance and retract positions to respectively restrict hydraulic flow, direct hydraulic flow to an advance port and direct hydraulic flow to a retract port, the ports for hydraulic connection to the hydraulic tool, in use. Fluid conduits are provided connecting the pump and reservoir to the directional valve. A flow switch detects return flow from the directional valve to the reservoir. A pressure sensor sense hydraulic pressure from the pump. A dump valve is operatively connected to the pump for directing hydraulic flow back to the reservoir when the directional valve is in the neutral position. A control is operatively connected to the pump, the directional valve, the flow switch and the pressure sensing means for controlling operation of the auto cycle pump in automatic mode of operation.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: April 8, 1997
    Assignee: Power Team Div. of SPX Corp.
    Inventor: Michael T. Landrum
  • Patent number: 5387870
    Abstract: The invention is a method and apparatus for extracting and analyzing features in real time from primary or secondary ignition waveforms, including engine probes, sampling device, and a processor that extracts from the waveform features such as peak firing height, firing line duration, firing line slope, firing line noise, post firing line duration, primary oscillations, and dwell interval duration and compares them against fixed thresholds and running averages to detect anomalies. Anomalies are reported as they occur allowing diagnosis of transient events as well as steady conditions. Waveforms with or without anomalies may be stored and retrieved as needed.
    Type: Grant
    Filed: January 8, 1993
    Date of Patent: February 7, 1995
    Assignee: SPX Corp.
    Inventors: Benjamin P. Knapp, Robert Trenary, James T. Walters, Clarence B. Allgor, David T. Bach
  • Patent number: D334132
    Type: Grant
    Filed: August 16, 1991
    Date of Patent: March 23, 1993
    Assignee: Truth Div. of SPX Corp.
    Inventors: Greg R. Wobschall, Marvin G. Root