Patents by Inventor Hendrik Dirk van Ettinger

Hendrik Dirk van Ettinger 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: 9879438
    Abstract: A wave pool for producing waves having a first wave forming portion with an inclined section and a second wave dampening portion having a raised floor above a bottom chamber floor wherein the raised floor preferably has multiple openings thereon and a predetermined porosity (?) within the range of 0<??0.5, such that as the waves travel across the wave dampening chamber, a boundary layer of energy absorbing vortices and eddies are generated above and below the raised floor resulting from water flowing up and down through the perforations, which helps to dampen the waves, and wherein the raised floor preferably comprises a padded grate drainage system consisting of multiple elongated members formed by rigid bars with foam adhered on one side thereof, which are encapsulated by a water impervious layer.
    Type: Grant
    Filed: September 22, 2014
    Date of Patent: January 30, 2018
    Inventors: Thomas J. Lochtefeld, Hendrik Dirk van Ettinger, Dirk Bastenhof
  • Patent number: 9856665
    Abstract: A wave pool for producing waves has a first wave-forming portion with an inclined section for causing the waves to begin breaking and a second wave-dampening portion with a raised floor with perforations extended above a bottom chamber floor. The raised floor is preferably adapted with a predetermined porosity such that a boundary layer of energy absorbing vortices and eddies is generated above and below the raised floor, resulting from water passing up and down through the openings, and the boundary layer effects on the raised floor help to dampen the waves.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: January 2, 2018
    Inventors: Thomas J. Lochtefeld, Hendrik Dirk van Ettinger, Dirk Bastenhof
  • Patent number: 9506259
    Abstract: A wave pool for producing waves having a first wave forming portion with an inclined section oriented obliquely relative to the travel direction of the waves and a second wave dampening portion having a raised perforated floor above a bottom chamber floor wherein the raised floor is preferably extended substantially horizontally at a predetermined depth in the water or at a slight incline, and wherein the raised floor preferably has a predetermined porosity (?) within the range of 0<??0.5, such that as the waves travel across the wave dampening chamber, a boundary layer of energy absorbing vortices and eddies are generated above and below the raised floor resulting from water flowing up and down through the perforations, which helps to dampen the waves.
    Type: Grant
    Filed: October 18, 2013
    Date of Patent: November 29, 2016
    Inventors: Thomas J. Lochtefeld, Hendrik Dirk van Ettinger, Dirk Bastenhof
  • Publication number: 20160273236
    Abstract: A wave pool for producing waves has a first wave-forming portion with an inclined section for causing the waves to begin breaking and a second wave-dampening portion with a raised floor with perforations extended above a bottom chamber floor. The raised floor is preferably adapted with a predetermined porosity such that a boundary layer of energy absorbing vortices and eddies is generated above and below the raised floor, resulting from water passing up and down through the openings, and the boundary layer effects on the raised floor help to dampen the waves.
    Type: Application
    Filed: June 2, 2016
    Publication date: September 22, 2016
    Inventors: Thomas J. LOCHTEFELD, Hendrik Dirk van ETTINGER, Dirk BASTENHOF
  • Publication number: 20150107013
    Abstract: A wave pool for producing waves having a first wave forming portion with an inclined section oriented obliquely relative to the travel direction of the waves and a second wave dampening portion having a raised perforated floor above a bottom chamber floor wherein the raised floor is preferably extended substantially horizontally at a predetermined depth in the water or at a slight incline, and wherein the raised floor preferably has a predetermined porosity (?) within the range of 0<??0.5, such that as the waves travel across the wave dampening chamber, a boundary layer of energy absorbing vortices and eddies are generated above and below the raised floor resulting from water flowing up and down through the perforations, which helps to dampen the waves.
    Type: Application
    Filed: October 18, 2013
    Publication date: April 23, 2015
    Inventors: Thomas J. Lochtefeld, Hendrik Dirk van Ettinger, Dirk Bastenhof
  • Publication number: 20150033465
    Abstract: A wave pool for producing waves having a first wave forming portion with an inclined section and a second wave dampening portion having a raised floor above a bottom chamber floor wherein the raised floor preferably has multiple openings thereon and a predetermined porosity (?) within the range of 0<??0.5, such that as the waves travel across the wave dampening chamber, a boundary layer of energy absorbing vortices and eddies are generated above and below the raised floor resulting from water flowing up and down through the perforations, which helps to dampen the waves, and wherein the raised floor preferably comprises a padded grate drainage system consisting of multiple elongated members formed by rigid bars with foam adhered on one side thereof, which are encapsulated by a water impervious layer.
    Type: Application
    Filed: September 22, 2014
    Publication date: February 5, 2015
    Inventors: Thomas J. Lochtefeld, Hendrik Dirk van Ettinger, Dirk Bastenhof
  • Patent number: 8561221
    Abstract: A wave pool for producing periodic waves preferably having a first wave forming portion with an inclined section oriented obliquely relative to the travel direction of the waves, and a second wave dampening portion having a relatively deep solid chamber floor and a raised perforated floor above it for dampening the waves. The wave dampening portion preferably dissipates the waves, which in turn, reduces wave reflections and rip currents that can otherwise interfere with the oncoming waves.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: October 22, 2013
    Inventors: Thomas J. Lochtefeld, Hendrik Dirk van Ettinger, Dirk Bastenhof