Ashok K. Gupta 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).
Abstract: A portion of the feed gas is supplied in a pulsating fashion to a fluidized ed reactor containing the articles to be coated mixed with fluidizing particles. The pulse frequency is between 1 and 10 Hz. A continuous flow of a portion of the total gas supply at a rate insufficient to produce turbulence in the bed is provided to facilitate control of the pulsing frequency and reduce the energy necessary for the pulsating gas stream. The gases fed to the reactor are a coating gas and a carrier gas, the flow containing the coating gas including a portion of the carrier gas. Either the pulsed flow or the continuous flow may consist entirely of carrier gas. The fluidizing particles are preferably of the same material as the articles to be coated and are typically of a grain size between 2 and 3 mm.
August 16, 1978
Date of Patent:
April 14, 1981
Kernforschungsanlage Julich Gesellschaft mit beschrankter Haftung
Erno Gyarmati, Hubertus Nickel, Ashok K. Gupta, Rudolf Munzer
Abstract: A circuit responds to a level-sensing device, adjacent a coin-holding tube, to cause an electric motor to rotate a coin-receiving drum until sufficient coins issue from that coin-receiving drum to fill that coin-holding tube. Ordinarily, coins will issue from that coin-receiving drum in such rapid succession that the motor need not be energized very long. However if, because some coins within that coin-receiving drum interact to form a "bridge" which retards or prevents the issuance of other coins from that coin-receiving drum, or if for any other reason coins do not issue from that coin-receiving drum, the circuit will keep that motor energized for a finite length of time, will de-energize that motor, and will energize that motor for a second finite length of time.