Patents by Inventor Steven E. Wolfgram

Steven E. Wolfgram 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: 11635265
    Abstract: A bolted hinge assembly is provided for a waterbox cover (a “waterbox hinge assembly”). The waterbox hinge assembly generally does not require welding on the waterbox cover or the heat exchanger in an HVAC system (“HVAC unit” hereinafter). Further, the waterbox hinge assembly may be installable to the HVAC unit without removing the heat exchange fluids (e.g., water, refrigerant, etc.) from the HVAC unit. In some cases, the waterbox hinge assembly can be installed on an HVAC unit without removing any bolts from the waterbox cover. Once installed, the waterbox hinge assembly can be left in place so that it can be reused anytime the HVAC unit is serviced.
    Type: Grant
    Filed: February 4, 2019
    Date of Patent: April 25, 2023
    Assignee: TRANE INTERNATIONAL INC.
    Inventors: Steven E. Wolfgram, Daoud A. Jandal, Bradley S. Wickersham, Fred Eickstaedt, James M. McCool, Raymond S. Schafer, Ronald E. Schlicht, Robert A. Harris, Steven E. Meloling, Raghu Kumar, Kishore Prabakaran
  • Publication number: 20190170454
    Abstract: Embodiments described in this specification are generally directed to a bolted hinge assembly for a waterbox cover (a “waterbox hinge assembly”). The waterbox hinge assembly generally does not require welding on the waterbox cover or the heat exchanger in an HVAC system (“HVAC unit” hereinafter). Further, the waterbox hinge assembly may be installable to the HVAC unit without removing the heat exchange fluids (e.g., water, refrigerant, etc.) from the HVAC unit. In some embodiments, the waterbox hinge assembly can be installed on an HVAC unit without removing any bolts from the waterbox cover. Once installed, the waterbox hinge assembly can be left in place so that it can be reused anytime the HVAC unit is serviced.
    Type: Application
    Filed: February 4, 2019
    Publication date: June 6, 2019
    Inventors: Steven E. Wolfgram, Daoud A. Jandal, Bradley S. Wickersham, Fred Eickstaedt, James M. McCool, Raymond S. Schafer, Ronald E. Schlicht, Robert A. Harris, Steven E. Meloling, Raghu Kumar, Kishore Prabakaran
  • Patent number: 10203168
    Abstract: Embodiments described in this specification are generally directed to a bolted hinge assembly for a waterbox cover (a “waterbox hinge assembly”). The waterbox hinge assembly generally does not require welding on the waterbox cover or the heat exchanger in an HVAC system (“HVAC unit” hereinafter). Further, the waterbox hinge assembly may be installable to the HVAC unit without removing the heat exchange fluids (e.g., water, refrigerant, etc.) from the HVAC unit. In some embodiments, the waterbox hinge assembly can be installed on an HVAC unit without removing any bolts from the waterbox cover. Once installed, the waterbox hinge assembly can be left in place so that it can be reused anytime the HVAC unit is serviced.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: February 12, 2019
    Assignee: TRANE INTERNATIONAL INC.
    Inventors: Steven E. Wolfgram, Daoud A. Jandal, Bradley S. Wickersham, Fred Eickstaedt, James M. McCool, Raymond S. Schafer, Ronald E. Schlicht, Robert A. Harris, Steven E. Meloling, Raghu Kumar, Kishore Prabakaran
  • Publication number: 20160363393
    Abstract: Embodiments described in this specification are generally directed to a bolted hinge assembly for a waterbox cover (a “waterbox hinge assembly”). The waterbox hinge assembly generally does not require welding on the waterbox cover or the heat exchanger in an HVAC system (“HVAC unit” hereinafter). Further, the waterbox hinge assembly may be installable to the HVAC unit without removing the heat exchange fluids (e.g., water, refrigerant, etc.) from the HVAC unit. In some embodiments, the waterbox hinge assembly can be installed on an HVAC unit without removing any bolts from the waterbox cover. Once installed, the waterbox hinge assembly can be left in place so that it can be reused anytime the HVAC unit is serviced.
    Type: Application
    Filed: June 15, 2016
    Publication date: December 15, 2016
    Inventors: Steven E. Wolfgram, Daoud A. Jandal, Bradley S. Wickersham, Fred Eickstaedt, James M. McCool, Raymond S. Schafer, Ronald E. Schlicht, Robert A. Harris, Steven E. Meloling, Raghu Kumar, Kishore Prabakaran
  • Patent number: 6705100
    Abstract: A purging device for a system accumulating condensable and non-condensable gases. The purging device comprises: a purge tank; apparatus receiving the condensable and non-condensable gases from the system and directing said gases into the purge tank; apparatus condensing the non-condensable gases into a condensed form; apparatus accumulating the non-condensable gases in a header space; apparatus returning the condensed gases from the purge tank to the system; apparatus controllably removing the accumulated non-condensable gases from the header space; and apparatus generating controlled flow in the condensable and non-condensable gases.
    Type: Grant
    Filed: May 15, 2003
    Date of Patent: March 16, 2004
    Assignee: American Standard International Inc.
    Inventors: Richard M. Heiden, Robert J. Roth, Brian T. Sullivan, Steven E. Wolfgram
  • Patent number: 6647736
    Abstract: A purging device for a system accumulating condensable and non-condensable gases. The purging device comprises: a purge tank; apparatus receiving the condensable and non-condensable gases from the system and directing said gases into the purge tank; apparatus condensing the non-condensable gases into a condensed form; apparatus accumulating the non-condensable gases in a header space; apparatus returning the condensed gases from the purge tank to the system; apparatus controllably removing the accumulated non-condensable gases from the header space; and apparatus generating controlled flow in the condensable and non-condensable gases.
    Type: Grant
    Filed: May 15, 2003
    Date of Patent: November 18, 2003
    Assignee: American Standard International Inc.
    Inventors: Richard M. Heiden, Robert J. Roth, Brian T. Sullivan, Steven E. Wolfgram, Lori Ann Manning
  • Publication number: 20030192332
    Abstract: A purging device for a system accumulating condensable and non-condensable gases. The purging device comprises: a purge tank; apparatus receiving the condensable and non-condensable gases from the system and directing said gases into the purge tank; apparatus condensing the non-condensable gases into a condensed form; apparatus accumulating the non-condensable gases in a header space; apparatus returning the condensed gases from the purge tank to the system; apparatus controllably removing the accumulated non-condensable gases from the header space; and apparatus generating controlled flow in the condensable and non-condensable gases.
    Type: Application
    Filed: May 15, 2003
    Publication date: October 16, 2003
    Inventors: Richard M. Heiden, Robert J. Roth, Brian T. Sullivan, Steven E. Wolfgram, Lori Ann Manning
  • Publication number: 20030192333
    Abstract: A purging device for a system accumulating condensable and non-condensable gases. The purging device comprises: a purge tank; apparatus receiving the condensable and non-condensable gases from the system and directing said gases into the purge tank; apparatus condensing the non-condensable gases into a condensed form; apparatus accumulating the non-condensable gases in a header space; apparatus returning the condensed gases from the purge tank to the system; apparatus controllably removing the accumulated non-condensable gases from the header space; and apparatus generating controlled flow in the condensable and non-condensable gases.
    Type: Application
    Filed: May 15, 2003
    Publication date: October 16, 2003
    Inventors: Richard M. Heiden, Robert J. Roth, Brian T. Sullivan, Steven E. Wolfgram
  • Patent number: 6564564
    Abstract: A purging device for a system accumulating condensable and non-condensable gases. The purging device comprises: a purge tank; apparatus receiving the condensable and non-condensable gases from the system and directing said gases into the purge tank; apparatus condensing the non-condensable gases into a condensed form; apparatus accumulating the non-condensable gases in a header space; apparatus returning the condensed gases from the purge tank to the system; apparatus controllably removing the accumulated non-condensable gases from the header space; and apparatus generating controlled flow in the condensable and non-condensable gases.
    Type: Grant
    Filed: October 22, 2001
    Date of Patent: May 20, 2003
    Assignee: American Standard International Inc.
    Inventors: Richard M. Heiden, Robert J. Roth, Brian T. Sullivan, Steven E. Wolfgram
  • Publication number: 20030074909
    Abstract: A purging device for a system accumulating condensable and non-condensable gases. The purging device comprises: a purge tank; apparatus receiving the condensable and non-condensable gases from the system and directing said gases into the purge tank; apparatus condensing the non-condensable gases into a condensed form; apparatus accumulating the non-condensable gases in a header space; apparatus returning the condensed gases from the purge tank to the system; apparatus controllably removing the accumulated non-condensable gases from the header space; and apparatus generating controlled flow in the condensable and non-condensable gases.
    Type: Application
    Filed: October 22, 2001
    Publication date: April 24, 2003
    Inventors: Richard M. Heiden, Robert J. Roth, Brian T. Sullivan, Steven E. Wolfgram