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
  • Patent number: 5976601
    Abstract: A method of preparing raw oyster meat in the shell is disclosed which employs a mild heat treatment followed by chilling for the destruction of harmful pathogenic bacteria such as Vibrio vulnificus. The oysters are captured and transported to the processing plant in a refrigerated state. The oysters are then cleaned and graded into categories according the product size. The oysters are then placed into a continuous flow of sterilized water at a sufficient temperature and duration to kill the pathogens yet leave the meat in a raw state within the shell. Different temperatures and time durations have been found to give excellent results depending on the size of the oyster. It has been found that the internal temperature of the oysters, that is, the meat within the shell, must reach a minimum of 49 degrees centigrade and not exceed 53 degrees centigrade for maximum efficacy. Depending on oyster weight and warm water temperature, the oysters will be immersed from between about 10-45 minutes.
    Type: Grant
    Filed: June 12, 1998
    Date of Patent: November 2, 1999
    Inventors: John Tesvich, Pat Fahey, John Schegan
  • Patent number: 5773064
    Abstract: A method of preparing raw molluscan shellfish meat in the shell is disclosed which employs a mild heat treatment and cold storage for the destruction or reduction to lower levels of harmful pathogenic bacteria such as Vibrio vulnificus, Vibrio cholerae and others. The raw molluscan shellfish, such as oysters, arrives at the processing plant in a refrigerated state. The mollusks then have a band placed around them, securing them against opening. The banded mollusks are then placed in a fluid bath at a sufficient temperature and duration to kill pathogens yet leave the meat in a raw state. The mollusks are then conveyed from the heated fluid bath and placed in a cold fluid bath. The mollusks are then removed from the cold fluid bath. The natural enclosure of the mechanically banded mollusk prevents the hot or cold fluids from contacting the flesh of the mollusk. The mollusks remain in a raw state and in the shell throughout the process. The pathogenic bacteria are reduced through the action of this process.
    Type: Grant
    Filed: March 22, 1996
    Date of Patent: June 30, 1998
    Inventors: John Tesvich, John Schegan, Patrick Fahey
  • Patent number: 5679392
    Abstract: A method of preparing raw molluscan shellfish meat in the shell or out of the shell is disclosed which employs a mild heat treatment and cold storage for the destruction of harmful pathogenic bacteria such as Vibrio Vulnificus. The raw molluscan shellfish, such as Oysters, arrives at the processing plant in a refrigerated state. The product is then culled, cleaned and graded into categories according the product size. The product is then enveloped in a polymer or metalized film bag to isolate the product. The bagged product is then placed on a rack which is then lowered into a circulating bath of water at a sufficient temperature and duration to kill the pathogens yet leave the meat in a raw state. The rack is then removed from the heated water bath and placed in a cold water bath with a continuous flow for a time period. The rack is removed from the cold water bath. At no time did the hot or cold bath waters come in contact with the bagged mollusk (product).
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: October 21, 1997
    Inventors: John Schegan, Patrick Fahey, John Tesvich