Patents by Inventor John O. Cliff

John O. Cliff 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).

  • Two-boom crawler crane
    Patent number: 4946051
    Abstract: A crawler crane made up of a crane frame and body on tracks, a telescoping boom projecting from the body, a fixed-length A-frame boom with rotatable arms, a mechanism for lifting the telescoping boom and a device for extending the telescoping boom.
    Type: Grant
    Filed: April 5, 1989
    Date of Patent: August 7, 1990
    Inventor: John O. Cliff
  • Condensate-collecting ceiling for elevated water tower facility
    Patent number: 4809734
    Abstract: A condensate-collecting ceiling for water tower facilities and the like is made up of a plurality of supporting members such as rods, tubes, pipes or the like which extend from a central locus or axis such as a tension ring or riser pipe to a periphal wall and have a waterproof flexible membrane draped thereover to form valleys or channels therebetween for draining condensate therefrom into central or peripheral drain pipes.
    Type: Grant
    Filed: September 28, 1988
    Date of Patent: March 7, 1989
    Inventor: John O. Cliff
  • Energy exchange method and apparatus
    Patent number: 4781240
    Abstract: An air to air heat exchanger for ventilating buildings has the air streams maintained in direct contact with little mixing by tangentially introducing the air streams along cylindrical surfaces in opposite directions to form spiral, counterflows. Valves are provided to switch the flows for winter and summer operation.
    Type: Grant
    Filed: March 10, 1988
    Date of Patent: November 1, 1988
    Inventor: John O. Cliff
  • Multi-purpose elevated water storage facilities
    Patent number: 4513547
    Abstract: An elevated water storage facility includes a fluted pillar which is divided into a plurality of levels so the facility is multi-purpose. One embodiment of the facility includes an outer wall surrounding the pillar.
    Type: Grant
    Filed: September 10, 1982
    Date of Patent: April 30, 1985
    Assignee: Pittsburgh-Des Moines Corporation
    Inventors: John O. Cliff, James Edwards
  • Removable condensate collector for elevated water storage facilities
    Patent number: 4313457
    Abstract: A removable condensate collector for elevated water storage facilities includes a membrane attached to the walls of such elevated water storage facility and positioned to prevent condensate from falling onto structures located at or near the bottom of the facility from a water storage container located at or near the top of the facility. The membrane can be frusto-conical in shape with the apex thereof located above or below the base, or can be horizontally disposed within the facility.
    Type: Grant
    Filed: November 20, 1979
    Date of Patent: February 2, 1982
    Assignee: Pittsburgh-Des Moines Corporation
    Inventor: John O. Cliff
  • Combined water storage tank and building
    Patent number: D265226
    Type: Grant
    Filed: June 3, 1980
    Date of Patent: June 29, 1982
    Assignee: Pittsburgh-Des Moines Corporation
    Inventors: J. Keith Carlat, John O. Cliff
  • Combined water storage tank and building
    Patent number: D275306
    Type: Grant
    Filed: February 8, 1982
    Date of Patent: August 28, 1984
    Assignee: Pittsburgh-Des Moines Corporation
    Inventors: James M. Edwards, John O. Cliff
  • Combined water storage tank and building
    Patent number: D275307
    Type: Grant
    Filed: February 8, 1982
    Date of Patent: August 28, 1984
    Assignee: Pittsburgh-Des Moines Corporation
    Inventors: James M. Edwards, John O. Cliff
  • Combined water storage tank and building
    Patent number: D275308
    Type: Grant
    Filed: February 8, 1982
    Date of Patent: August 28, 1984
    Assignee: Pittsburgh-Des Moines Corporation
    Inventors: James M. Edwards, John O. Cliff