Patents Assigned to Ryan Instruments, Inc.
  • Remote environmental monitor system
    Patent number: 4816822
    Abstract: An electronic measurement, data storage and readout system utilizing a programmable processor and controller to manipulate data measurements from a transducer is disclosed. Means are provided for electronically safeguarding the stored data. In the preferred embodiment means are also provided for reading out the data directly to a dedicated printer for producing graphical representations of the data and for converting the data to frequency-shift keyed signals which can be transmitted over telephone lines to the dedicated printer. A redeployment station is provided to reinitialize the programmable processor and controller.
    Type: Grant
    Filed: February 14, 1986
    Date of Patent: March 28, 1989
    Assignee: Ryan Instruments, Inc.
    Inventors: John P. Vache, Jerry E. Johnson, Lon O. Hocker, John H. Godley
  • Portable compact strip chart recorder with lost-motion protective connection to transducer
    Patent number: 4199768
    Abstract: A portable strip chart recorder is provided with a constant speed strip chart advancing drive powered from a clockworks and gear drive unit. The gear drive unit is sealed from the strip chart so that it cannot be tampered with when the strip chart is changed. The constant speed drive comprises a constant speed sprocket spool which engages sprocket holes in a strip chart running between a feed spool and a take-up spool. The feed spool is provided with a drag to allow variations in the rotational speed of the strip chart on the spool and provide tension on the chart whereas the take-up spool is provided with a slip clutch that allows the chart to be wrapped at a constant tangential speed even though the diameter of the chart on the take-up spool varies.
    Type: Grant
    Filed: December 8, 1978
    Date of Patent: April 22, 1980
    Assignee: Ryan Instruments, Inc.
    Inventor: Jerry E. Johnson
  • Portable compact strip chart recorder
    Patent number: 4141019
    Abstract: A portable strip chart recorder is provided with a constant speed strip chart advancing drive powered from a clockworks and gear drive unit. The gear drive unit is sealed from the strip chart so that it cannot be tampered with when the strip chart is changed. The constant speed drive comprises a constant speed sprocket spool which engages sprocket holes in a strip chart running between a feed spool and a take-up spool. The feed spool is provided with a drag to allow variations in the rotational speed of the strip chart on the spool and provide tension on the chart whereas the take-up spool is provided with a slip clutch that allows the chart to be wrapped at a constant tangential speed even though the diameter of the chart on the take-up spool varies.
    Type: Grant
    Filed: May 9, 1977
    Date of Patent: February 20, 1979
    Assignee: Ryan Instruments, Inc.
    Inventor: Jerry E. Johnson