Patents by Inventor Archibald Tewarson

Archibald Tewarson 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).

  • Smoke evaluating device and related method
    Patent number: 8181504
    Abstract: A smoke evaluation device includes a manifold in fluid communication with a source of smoke, and a first sampling line and a second sampling line in fluid communication with the manifold. The first sampling line and the second sampling line are arranged to convey parallel smoke flows. A first filter station is located in the first sampling line, and is adapted to support a filter paper in fluid communication with the smoke. A first circuit board station is located in the second sampling line, and is adapted to support a circuit board in fluid communication with the smoke.
    Type: Grant
    Filed: February 18, 2009
    Date of Patent: May 22, 2012
    Assignee: Factory Mutual Insurance Company
    Inventor: Archibald Tewarson
  • SMOKE EVALUATING DEVICE AND RELATED METHOD
    Publication number: 20100206043
    Abstract: A smoke evaluation device includes a manifold in fluid communication with a source of smoke, and a first sampling line and a second sampling line in fluid communication with the manifold. The first sampling line and the second sampling line are arranged to convey parallel smoke flows. A first filter station is located in the first sampling line, and is adapted to support a filter paper in fluid communication with the smoke. A first circuit board station is located in the second sampling line, and is adapted to support a circuit board in fluid communication with the smoke.
    Type: Application
    Filed: February 18, 2009
    Publication date: August 19, 2010
    Applicant: FACTORY MUTUAL INSURANCE COMPANY
    Inventor: Archibald Tewarson