Interrelated Tool Lift And Shift Patents (Class 172/209)
Mast type hitch (Class 172/210)
Lift by ground support manipulation (Class 172/211)
  • Hydraulic sequencing valve
    Patent number: 4341148
    Abstract: There is disclosed a new and improved hydraulic sequencing valve of the type which includes a movable valve spool within the body to sequence operation of the valve. An aperture through one spool or chamber is arranged for direct fluid communication with a tank port upon initial movement of the spool to increase the differential fluid pressure across the chambers and accelerate the sequencing movement of the spool.
    Type: Grant
    Filed: September 30, 1980
    Date of Patent: July 27, 1982
    Assignee: Modular Controls Corporation
    Inventor: Constantine Kosarzecki