Patents by Inventor John R. Andra

John R. Andra 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).

  • Pre-chamber assembly
    Patent number: 10883413
    Abstract: A pre-chamber assembly of an internal combustion engine comprises a pre-chamber housing and a plurality of nozzles extending through a portion of the pre-chamber housing. The plurality of nozzles are directed to one location.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: January 5, 2021
    Assignee: Cummins Inc.
    Inventors: Alan C. Anderson, John R. Andras
  • PRE-CHAMBER ASSEMBLY
    Publication number: 20200123963
    Abstract: A pre-chamber assembly of an internal combustion engine comprises a pre-chamber housing and a plurality of nozzles extending through a portion of the pre-chamber housing. The plurality of nozzles are directed to one location.
    Type: Application
    Filed: October 8, 2015
    Publication date: April 23, 2020
    Applicant: CUMMINS INC.
    Inventors: Alan C. Anderson, John R. Andras
  • Uniform temperature incubator
    Patent number: 4039775
    Abstract: An improved incubator includes a heated door which increases temperature uniformity inside the incubator.
    Type: Grant
    Filed: October 1, 1975
    Date of Patent: August 2, 1977
    Assignee: Fisher Scientific Company
    Inventor: John R. Andra
  • Humidifier
    Patent number: 3987133
    Abstract: A humidifier for conditioning fluid for delivery to a test chamber, such as an incubator, includes means for automatically regulating the quantity, level and temperature of a body of water through which mixed gases, such as air and CO.sub.2, are bubbled to entrain moisture in the gases. The water is heated to below its boiling point. The relative humidity of the saturated mixture delivered to the test chamber is usually at least 90% at temperatures between about 30.degree. - 60.degree.C.
    Type: Grant
    Filed: September 5, 1975
    Date of Patent: October 19, 1976
    Assignee: Fisher Scientific Company
    Inventor: John R. Andra