Patents by Inventor Abe Feldman

Abe Feldman 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).

  • Gas driven gyroscope with extended rundown time
    Patent number: 4724712
    Abstract: A gas gyroscope 11 is provided with an aspirator pump 71 in order to evacuate gas from the main chamber 19 of the gyroscope 11. The evacuation of gas reduces windage and other air friction encountered by the gyroscope's rotor 21 and thereby extends the rundown time of the gyroscope. The aspirator 71 may be energized by a dedicated compressed gas source such as a compressed gas chamber 91. Alternatively, the aspirator 71 may be provided with ram air or bleed perpellant gases.
    Type: Grant
    Filed: March 7, 1985
    Date of Patent: February 16, 1988
    Assignee: Allied Corporation
    Inventors: Meyer Malina, Abe Feldman
  • Gas driven gyroscope
    Patent number: 4271709
    Abstract: An improvement in gas driven gyroscopes of the type having a gas driven reaction rotor and integrally contained gas source. A spring loaded valve in the bore of the rotor shaft opens to admit the driving gas to the rotor nozzles and then closes to shut off the gas passages during rundown of the rotor so as to extend the rundown time.
    Type: Grant
    Filed: August 20, 1979
    Date of Patent: June 9, 1981
    Assignee: Timex Corporation
    Inventor: Abe Feldman