US Patent 7367721 Bi-stable mechanical photographic shutter

Patent 7367721 was granted and assigned to VA on May, 2008 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors Activity

Is a

Patent

Patent attributes

Current Assignee

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

73677210

Patent Inventor Names

Mark Watson0

Stephen T. Pasquarella0

Date of Patent

May 6, 2008

Patent Application Number

110997440

Date Filed

April 6, 2005

Patent Primary Examiner

W. B. Perkey

Patent abstract

An electromagnetically operable rotary shutter is rendered bi-stable by the use of two linear electric motors, one to open the shutter and a second to close the shutter together with a latch that holds the shutter in either an open or a closed position in the absence of power to purposefully open or close the shutter.