Patents by Inventor Alan L. Crowle

Alan L. Crowle 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).

  • Tackiness tester
    Patent number: 5169448
    Abstract: An apparatus, for determining the degree of tackiness of a surface of a body, comprises a closed chamber with inlet and outlet openings; a support for the body within the chamber; a fan for providing an airflow directed toward the surface of the body within the chamber; a powder dispenser for releasing powder into the path of the airflow upstream of the body surface, the powder being adapted to be carried by the airflow thereby to permit the powder to impinge against the body surface; whereby the amount of powder adhering to the body surface after a period provides a measure of tackiness of the surface.
    Type: Grant
    Filed: October 23, 1991
    Date of Patent: December 8, 1992
    Assignee: Northern Telecom Limited
    Inventors: John P. Peterson, David E. Graves, Alan L. Crowle
  • Method for providing a measure of tackiness of a body surface
    Patent number: 5141767
    Abstract: An apparatus, for determining the degree of tackiness of a surface of a body, comprises a closed chamber with inlet and outlet openings; a support for the body within the chamber; a fan for providing an airflow directed toward the surface of the body within the chamber; a powder dispenser for releasing powder into the path of the airflow upstream of the body surface, the powder being adapted to be carried by the airflow thereby to permit the powder to impinge against the body surface; whereby the amount of powder adhering to the body surface after a period provides a measure of tackiness of the surface.
    Type: Grant
    Filed: January 15, 1991
    Date of Patent: August 25, 1992
    Assignee: Northern Telecom Limited
    Inventors: John P. Peterson, David E. Graves, Alan L. Crowle