Patents by Inventor David L. Blank

David L. Blank 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).

  • Vacuum turret
    Patent number: 5470195
    Abstract: A vacuum turret apparatus for moving objects from a first location to a second location is disclosed. The turret is specifically designed to move individual plate-like objects from a stack of such objects located at the first location to the second location. Flexible bellows in combination with vacuum are used to lift, hold, and move the objects. An air knife ejecting a stream of high pressure air towards the selected object helps separate that object from the rest of the stack.
    Type: Grant
    Filed: January 12, 1994
    Date of Patent: November 28, 1995
    Assignee: Globe-Union, Inc.
    Inventors: David L. Blank, Roger O. Crill, Bruce A. Pusey, Kashyap H. Shah
  • Solid-state photometer circuit
    Patent number: 4689305
    Abstract: A stable, inexpensive and easily constructed photometer consisting of a cercial intergrated photodetection assembly, complementary solid-state operational amplifiers and a solid-state power supply for use in the detection and quantification of low level light emissions from bioluminescence organisms and for the detection of the absence of bioluminescence. Means are provided for controlling the sensitivity of the system as well as providing for direct readout or intergration of the detected signals where they are intermittent.
    Type: Grant
    Filed: March 24, 1986
    Date of Patent: August 25, 1987
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Arthur V. Stiffey, David L. Blank, George I. Loeb