Patents by Inventor John A. Tesvich

John A. Tesvich 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).

  • Patent number: 10094091
    Abstract: The present invention relates to apparatuses, methods, and systems for removing sediment from waterway bottoms and pumping the sediment through pipelines. More particularly, the present invention relates to apparatuses, methods, and systems for sediment control and altering the average effective depth in a section of rivers, streams and channels for maintaining the navigability of waterways and coastal restoration. The apparatus and method of the present invention including a means for preventing and removing blockages of water flow in the pipelines.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: October 9, 2018
    Inventor: John A. Tesvich
  • Patent number: 9816240
    Abstract: The present invention relates to apparatuses, methods, and systems for removing sediment from waterway bottoms and pumping the sediment through pipelines. More particularly, the present invention relates to apparatuses, methods, and systems for sediment control and altering the average effective depth in a section of rivers, streams and channels for maintaining the navigability of waterways and coastal restoration. The apparatus preferably comprises a sediment harvesting platform preferably positioned above a water surface; a sediment suction inlet or sediment sink preferably positioned below the top level of source sediment or within a sand bar including a grating, a sediment pump, a venturi including an auger/propeller, and a water jet; a flow control valve; and a pipeline for pumping sediment. The apparatus may further comprise a sediment conveyor including sediment inlets and a remote controlled pulsing valve. The apparatus may further comprise sensor(s) and a programmable logic controller (PLC).
    Type: Grant
    Filed: September 2, 2015
    Date of Patent: November 14, 2017
    Inventor: John A. Tesvich
  • Patent number: 8038492
    Abstract: A device that when fitted to a motor vessel's existing propulsion gear improves the performance and reduces potential damage and wear of underwater propeller shaft bearings, commonly referred to as “cutlass bearings” that are used on boats, ships, etc. Designed with radially mounted impeller blades around the periphery of the propeller shaft, the device creates a forced flow of water by centrifugal pumping action, which creates suction along the shaft abaft the cutlass bearing, thereby increasing the flow of water through the cutlass bearing. The device also greatly diminishes the probability that fouling around a propeller shaft will severely restrict water flow through the cutlass bearing.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: October 18, 2011
    Inventor: John A. Tesvich
  • Publication number: 20110097951
    Abstract: A device that when fitted to a motor vessel's existing propulsion gear improves the performance and reduces potential damage and wear of underwater propeller shaft bearings, commonly referred to as “cutlass bearings” that are used on boats, ships, etc. Designed with radially mounted impeller blades around the periphery of the propeller shaft, the device creates a forced flow of water by centrifugal pumping action, which creates suction along the shaft abaft the cutlass bearing, thereby increasing the flow of water through the cutlass bearing. The device also greatly diminishes the probability that fouling around a propeller shaft will severely restrict water flow through the cutlass bearing.
    Type: Application
    Filed: November 23, 2010
    Publication date: April 28, 2011
    Inventor: John A. Tesvich
  • Patent number: 7837524
    Abstract: A device that when fitted to a motor vessel's existing propulsion gear improves the performance and reduces potential damage and wear of underwater propeller shaft bearings, commonly referred to as “cutlass bearings” that are used on boats, ships, etc. Designed with radially mounted impeller blades around the periphery of the propeller shaft, the device creates a forced flow of water by centrifugal pumping action, which creates suction along the shaft abaft the cutlass bearing, thereby increasing the flow of water through the cutlass bearing. The device also greatly diminishes the probability that fouling around a propeller shaft will severely restrict water flow through the cutlass bearing.
    Type: Grant
    Filed: August 22, 2008
    Date of Patent: November 23, 2010
    Inventor: John A. Tesvich
  • Publication number: 20090053945
    Abstract: A device that when fitted to a motor vessel's existing propulsion gear improves the performance and reduces potential damage and wear of underwater propeller shaft bearings, commonly referred to as “cutlass bearings” that are used on boats, ships, etc. Designed with radially mounted impeller blades around the periphery of the propeller shaft, the device creates a forced flow of water by centrifugal pumping action, which creates suction along the shaft abaft the cutlass bearing, thereby increasing the flow of water through the cutlass bearing. The device also greatly diminishes the probability that fouling around a propeller shaft will severely restrict water flow through the cutlass bearing.
    Type: Application
    Filed: August 22, 2008
    Publication date: February 26, 2009
    Inventor: John A. Tesvich