Patents by Inventor Richard A. Lofy

Richard A. Lofy has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4291500
    Abstract: A personnel air lock has a transfer chamber that is separated from an atmospheric region by an outside door and is separated from a containment region by an inside door. A single drive shaft couples a motor and three clutch-operable hand wheels to the doors to sequentially open and close one door and then the other. Each door is opened and closed through a door actuator linkage that is coupled to the drive shaft through a respective dual clutch and a respective clutch-actuating mechanism. One door-opening clutch is engaged as a lead screw nut moves through an active range along a timing lead screw, while another door-opening clutch is disengaged as an associated lead screw nut moves through an inactive range along another timing lead screw, so that only one of the doors is coupled to the drive shaft at a time. Each lead screw nut forms part of a slide indicator for indicating the operating position of its associated door.
    Type: Grant
    Filed: August 30, 1979
    Date of Patent: September 29, 1981
    Assignee: Lakeside Bridge & Steel Co.
    Inventors: George M. Reckin, Richard A. Lofy, Robert S. Dean
  • Patent number: 4169758
    Abstract: Apparatus for the in situ inspection of a nuclear reactor vessel to detect the location and character of flaws in the walls of the vessel, in the welds joining the various sections of the vessel, in the welds joining attachments such as nozzles, elbows and the like to the reactor vessel and in such attachments wherein an inspection head carrying one or more ultrasonic transducers follows predetermined paths in scanning the various reactor sections, welds and attachments.
    Type: Grant
    Filed: October 26, 1977
    Date of Patent: October 2, 1979
    Assignee: The Babcock & Wilcox Company
    Inventors: Eugene G. Blackstone, Richard A. Lofy, Lawrence P. Williams