Patents by Inventor Alex Buchholz

Alex Buchholz 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).

  • Door release mechanism
    Patent number: 3955840
    Abstract: A release mechanism for doors includes a pair of pivotally mounted cams one of which is displaceable to engage and retain a tensioned door sash element while the other cam locks and holds the first cam in said engagement until influenced by either the absence or presence of electrical power to a solenoid connected to the second one of said cams to cause displacement of the second cam and thus permit displacement of the first cam and release of the tensioned door sash element.
    Type: Grant
    Filed: August 30, 1974
    Date of Patent: May 11, 1976
    Assignee: Cornell Iron Works, Inc.
    Inventors: William W. Rawls, Alex Buchholz, John P. Walsh