Patents by Inventor Clark N. Harper

Clark N. Harper 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: 11493212
    Abstract: The air filtration and cooling system is configured for use with an incorporated reference. The incorporated reference is identified as U.S. Pat. No. 9,308,484. The incorporated reference processes an air flow. Specifically, the incorporated reference removes particulates from the air flow. The incorporated reference is discussed in greater detail elsewhere in this disclosure. The air filtration and cooling system comprises the incorporated reference and a cooling system. The cooling system cools the air flow processed by the incorporated reference.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: November 8, 2022
    Inventor: Clark N. Harper
  • Patent number: 9308484
    Abstract: The environmental air filtration assembly includes a housing that may be coupled to the vehicle. The housing is exposed to ambient air. A filter is coupled to the housing. The filter removes pollutants from the ambient air. A processor is coupled to the housing. A motor is coupled to the housing and the processor. A fan is operationally coupled to the motor. The motor moves the fan so the fan urges the ambient air through the filter. A sensor is coupled to the housing. The sensor is operationally coupled to the processor. The sensor detects a speed of the vehicle. The sensor modifies a speed of the motor to correspond to the speed of the vehicle.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: April 12, 2016
    Inventor: Clark N. Harper
  • Patent number: 5143180
    Abstract: A load lift truck having a vertically extendible mast adapted for longitudinal displacement along a length of the truck chassis is disclosed. The truck includes a carriage mounted on the mast adapted for lateral displacement along the mast. The carriage fitted with a load-carrying fork arrangement is adapted for angular rotation about a vertical axis. The truck is adapted for simultaneous operation of each of the aforesaid displacements and rotation thereby providing a means of maneuvering a load within a markedly smaller spatial environment with increased load.
    Type: Grant
    Filed: May 6, 1991
    Date of Patent: September 1, 1992
    Inventor: Clark N. Harper
  • Patent number: 5036952
    Abstract: A load lift truck having a vertically extendible mast adapted for longitudinal displacement along a length of the truck chassis is disclosed. The truck includes a carriage mounted on the mast adapted for lateral displacement along the mast. The carriage fitted with a loadcarrying fork arrangement is adapted for angular rotation about a vertical axis. The truck is adapted for simultaneous operation of each of the aforesaid displacements and rotation thereby providing a means of maneuvering a load within a markedly smaller spatial environment with increased load.
    Type: Grant
    Filed: February 17, 1989
    Date of Patent: August 6, 1991
    Inventor: Clark N. Harper