Patents by Inventor John H. Wetzel

John H. Wetzel 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: 5490455
    Abstract: A trash collection and compacting apparatus primarily intended for use onboard an aircraft comprising a stationary compactor unit and interrelated movable trolley unit, the trolley unit having a plurality of separate trash collection chambers into which trash is deposited and compacted. The trolley unit includes wheels for moving the trolley through an aircraft for the collection of trash, and support rails for supporting the trolley unit on the compactor unit for the direct compaction of trash in the trolley. The compactor unit includes a compaction ram mounted on a carriage assembly for movement into discrete positions overlying each collection chamber of the trolley unit, and supports the trolley so that compaction forces are not transmitted to the aircraft.
    Type: Grant
    Filed: May 17, 1995
    Date of Patent: February 13, 1996
    Assignee: Aero-Design Technology
    Inventors: Walter Conti, William R. Feemster, Jeffrey L. Felts, Antony J. Fields, Robert W. Henderson, Paul L. Howard, Kevin F. Kaub, Joel A. Lederman, Thomas M. Lee, Gilbert Martinez, Mark H. Mathews, Ravi V. Patel, Michael W. Waldrep, John H. Wetzel
  • Patent number: 5465660
    Abstract: A trash collection and compacting apparatus primarily intended for use onboard an aircraft comprising a stationary compactor unit and interrelated movable wheeled trolley unit, the trolley unit having a plurality of separate trash collection chambers into which trash is deposited and compacted and support rails for supporting the trolley unit on the compactor unit for the direct compaction of trash in the trolley. The trolley unit also has separable sides to facilitate removal of compacted trash, and multiple fail safe locks and latches to ensure that the sides are not inadvertently separated during trash collection and compaction. Fire doors are provided to close the chambers, and removable trash bins are disposed in each trash chamber to facilitate handling of compacted trash, the bins having separable sides for emptying the compacted trash therefrom.
    Type: Grant
    Filed: February 16, 1994
    Date of Patent: November 14, 1995
    Assignee: Aero-Design Technology
    Inventors: Walter Conti, William R. Feemster, Jeffrey L. Felts, Antony J. Fields, Robert W. Henderson, Paul L. Howard, Kevin F. Kaub, Joel A. Lederman, Thomas M. Lee, Gilbert Martinez, Mark H. Mathews, Ravi V. Patel, Michael W. Waldrep, John H. Wetzel
  • Patent number: 4105995
    Abstract: A portable microprocessor controlled transmission impairment measuring unit capable of operating as a master unit or a slave unit and responsive to digital or manual control measures all basic parameters necessary to characterize a voice channel for its ability to transmit data traffic, as defined by Bell System Technical Reference PUB41009, dated May 1975. Measurements can be made manually end-to-end with a unit at each end of a circuit to be tested; manually looped-back with a unit at one end of the circuit; or remotely from one end with a MASTER operated unit controlling a SLAVE operated unit with all measurements displayed on the MASTER unit. The unit can also be used as a voice frequency repeater and can be operated with other test sets and computers having compatible measurements and capabilities.All measurements are displayed on digital readouts. Two separate readouts allow simultaneous display of up to two different parameters.
    Type: Grant
    Filed: June 16, 1976
    Date of Patent: August 8, 1978
    Assignee: Hewlett-Packard Company
    Inventors: Delwin L. Bothof, Richard G. Fowles, Johann J. Heinzl, David R. Novotny, Robert L. Weisickle, John H. Wetzel, Paul G. Winninghoff