Patents Assigned to Aladdin Engineering & Mfg., Inc.
  • Locking valve and flow control valve assembly
    Patent number: 5081904
    Abstract: A locking valve for selectively locking fluid pressure in a fluid cylinder in the event of failure of the source of fluid pressure to the cylinder and including an integral fluid flow control valve, the locking valve also including a fluid pressure seal between the fluid supply port and the pilot port of the locking valve to prevent back pressure on the pilot pressure operated valve components.
    Type: Grant
    Filed: September 25, 1990
    Date of Patent: January 21, 1992
    Assignee: Aladdin Engineering & Mfg., Inc.
    Inventors: Edward R. Horn, Derek Hopkinson, Michael C. Allen
  • Pneumatic locking valve with manual override
    Patent number: 4838306
    Abstract: A locking valve assembly for use with air cylinder and in pneumatic circuits and including a locking valve for selectively locking air pressure in the air cylinder. The locking valve is pilot operated to provide for release of air pressure from the air cylinder and also includes a manual override apparatus for providing for release of the locking valve in the absence of pilot pressure.
    Type: Grant
    Filed: August 10, 1987
    Date of Patent: June 13, 1989
    Assignee: Aladdin Engineering & Mfg., Inc.
    Inventors: Edward R. Horn, Derek Hopkinson
  • Fluid operated clamping device including fluid pressure locking means
    Patent number: 4838532
    Abstract: Apparatus for gripping a workpiece including a pneumatic cylinder assembly having a locking valve for selectively locking air in the pneumatic cylinder to thereby maintain the gripping apparatus in clamped engagement with a workpiece.
    Type: Grant
    Filed: October 6, 1988
    Date of Patent: June 13, 1989
    Assignee: Aladdin Engineering & Mfg., Inc.
    Inventors: Edward R. Horn, Derek Hopkinson