Patents by Inventor David R. Hewkin

David R. Hewkin 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).

  • Container for the coolant of an internal combustion engine
    Patent number: 6718916
    Abstract: A container for the coolant of an internal combustion engine including a first chamber (11), which forms the coolant reservoir and has a connection to a radiator. The first chamber is equipped with a sealing cap (19), and the sealing cap seals the first chamber via a threaded, bayonet or snap connection. An additional chamber (15) is provided as an overflow reservoir, which communicates with the first chamber (11) and which is equipped with an outlet. A third chamber (16) is arranged within the container, which at its geodetically lower end has a connection in the form of an opening to the second chamber (15). This third chamber (16) communicates with the first chamber (11) via an interposed pressure relief valve (20).
    Type: Grant
    Filed: May 22, 2002
    Date of Patent: April 13, 2004
    Assignee: Mann & Hummel Automotive, Inc.
    Inventor: David R. Hewkin
  • Container for the coolant of an internal combustion engine
    Publication number: 20020189559
    Abstract: A container for the coolant of an internal combustion engine including a first chamber (11), which forms the coolant reservoir and has a connection to a radiator. The first chamber is equipped with a sealing cap (19), and the sealing cap seals the first chamber via a threaded, bayonet or snap connection. An additional chamber (15) is provided as an overflow reservoir, which communicates with the first chamber (11) and which is equipped with an outlet. A third chamber (16) is arranged within the container, which at its geodetically lower end has a connection in the form of an opening to the second chamber (15). This third chamber (16) communicates with the first chamber (11) via an interposed pressure relief valve (20).
    Type: Application
    Filed: May 22, 2002
    Publication date: December 19, 2002
    Applicant: Mann & Hummel Automotive, Inc.
    Inventor: David R. Hewkin