Patents by Inventor Marvin D. Pepper

Marvin D. Pepper 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).

  • Filter purge control for HVAC variable air circulation system
    Patent number: 7377848
    Abstract: A variable air circulation system for the cab enclosure of an off-highway vehicle is disclosed and described. The system provides for adjustment of the ratio between fresh air circulation and recirculation of cab air. Fresh air is introduced into the cab through a fresh air inlet having a fresh air filter therein. The air inlet leads to a circulation conduit. When a cab door is opened, a valve to the conduit is opened. When the door is closed, the air pulse created in the cab is effective, through the valve, to dislodge dust and dirt from the filter.
    Type: Grant
    Filed: July 12, 2006
    Date of Patent: May 27, 2008
    Assignee: CNH America LLC
    Inventors: Hugh Richard Voit, II, Robert D. Doescher, Alan G. Leupold, Marvin D. Pepper
  • Filter purge control for HVAC fixed air circulation system
    Patent number: 7338357
    Abstract: A fixed air circulation system for the cab enclosure of an off-highway vehicle is disclosed. Fresh air is introduced into the cab through a fresh air inlet having a fresh air filter therein. The air inlet leads, through a manifold or fresh air duct, to the inside of the operator's compartment. When a cab door is opened, a bypass valve to the conduit is opened. When the door is closed, the air pulse created in the cab is effective, through the bypass valve or normal openings with the blower off, to dislodge dust and dirt from the filter.
    Type: Grant
    Filed: July 12, 2006
    Date of Patent: March 4, 2008
    Assignee: CNH America LLC
    Inventors: Hugh Richard Voit, II, Robert D. Doescher, Alan G Leupold, Marvin D. Pepper
  • FILTER PURGE CONTROL FOR HVAC FIXED AIR CIRCULATION SYSTEM
    Publication number: 20080032619
    Abstract: A fixed air circulation system for the cab enclosure of an off-highway vehicle is disclosed. Fresh air is introduced into the cab through a fresh air inlet having a fresh air filter therein. The air inlet leads, through a manifold or fresh air duct, to the inside of the operator's compartment. When a cab door is opened, a bypass valve to the conduit is opened. When the door is closed, the air pulse created in the cab is effective, through the bypass valve or normal openings with the blower off, to dislodge dust and dirt from the filter.
    Type: Application
    Filed: July 12, 2006
    Publication date: February 7, 2008
    Applicant: CNH America LLC
    Inventors: Hugh Richard Voit, Robert D. Doescher, Alan G. Leupold, Marvin D. Pepper
  • FILTER PURGE CONTROL FOR HVAC VARIABLE AIR CIRCULATION SYSTEM
    Publication number: 20080014856
    Abstract: A variable air circulation system for the cab enclosure of an off-highway vehicle is disclosed and described. The system provides for adjustment of the ratio between fresh air circulation and recirculation of cab air. Fresh air is introduced into the cab through a fresh air inlet having a fresh air filter therein. The air inlet leads to a circulation conduit. When a cab door is opened, a valve to the conduit is opened. When the door is closed, the air pulse created in the cab is effective, through the valve, to dislodge dust and dirt from the filter.
    Type: Application
    Filed: July 12, 2006
    Publication date: January 17, 2008
    Applicant: CNH America LLC
    Inventors: Hugh Richard Voit, Robert D. Doescher, Alan G. Leupold, Marvin D. Pepper