Patents by Inventor John S. Greacen

John S. Greacen 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: 4584166
    Abstract: A manually controlled tooling system for the remote placement and removal of a load, such as a plug, (12) at a location (6) inaccessible to maintenance personnel. The tooling provides for both horizontal and vertical movement of the load, and, in the preferred embodiment, rotational restraint. The load is supported vertically by at least one line (21) wrapped on a small diameter drum (19) which is supported from a travelling trolley (11) fitted to a sloping track (10). On the same shaft as the load drum, a large diameter centrally located sheave or control drum (20) accepts a single control line (13) counterwrapped in direction with respect to the load support line and terminating at its other end on a hand operated winch mechanism (14). The tooling acts to first allow the trolley to descend the track without relative motion between trolley and load. Then, with the trolley bottomed against a mechanical stop (26), the load is allowed to descend vertically to its desired position.
    Type: Grant
    Filed: March 29, 1983
    Date of Patent: April 22, 1986
    Assignee: Combustion Engineering, Inc.
    Inventor: John S. Greacen