Patents by Inventor Rainer Etschel

Rainer Etschel 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).

  • Development and rehabilitation of wells and springs by a rotary nozzle device with angle adjustable nozzles
    Patent number: 9366113
    Abstract: A rotary nozzle device (1) for development and rehabilitation of wells (3) is presented. The rotary nozzle device (1) comprises a body (5) with a longitudinal axis (7), a first group (9) of nozzles (23, 25) and a second group (11) of nozzles (27, 29). The body (5) is adapted for being inserted into a well shaft (37) and for supplying a rehabilitating or developing medium (13) to the nozzles (23, 25, 27, 29). The first group (9) of nozzles (23, 25) is arranged at a first distance (15) along the longitudinal axis (7) to the second group (11) of nozzles (27, 29). Therein, at least one nozzle (23, 25, 27, 29) is adjustable in such a way that the angle (a) between the nozzle (23, 25, 27, 29) and the longitudinal axis (7) is variable.
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: June 14, 2016
    Assignee: EM HOLDING GMBH & COKG
    Inventors: Rainer Etschel, Gerhard Etschel
  • Development and rehabilitation of wells and springs by a rotary nozzle device with angle adjustable nozzles
    Publication number: 20140231546
    Abstract: A rotary nozzle device (1) for development and rehabilitation of wells (3) is presented. The rotary nozzle device (1) comprises a body (5) with a longitudinal axis (7), a first group (9) of nozzles (23, 25) and a second group (11) of nozzles (27, 29). The body (5) is adapted for being inserted into a well shaft (37) and for supplying a rehabilitating or developing medium (13) to the nozzles (23, 25, 27, 29). The first group (9) of nozzles (23, 25) is arranged at a first distance (15) along the longitudinal axis (7) to the second group (11) of nozzles (27, 29). Therein, at least one nozzle (23, 25, 27, 29) is adjustable in such a way that the angle (a) between the nozzle (23, 25, 27, 29) and the longitudinal axis (7) is variable.
    Type: Application
    Filed: October 10, 2013
    Publication date: August 21, 2014
    Applicant: EM Holding GmbH & Co., KG
    Inventors: Rainer Etschel, Gerhard Etschel