Patents by Inventor Harold E. Erwin

Harold E. Erwin 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).

  • Publication number: 20030037837
    Abstract: The invention provides a method of flushing the brake system of a vehicle by administering new brake fluid to the master cylinder under pressure while at the same time suctioning with a clear wand old brake fluid from a particular bleeder valve on the vehicle with all the remaining valves closed. Once the particular valve has been adequately bled, new brake fluid will be seen coming out of the valve through the clear wand, and the valve should be closed. This procedure is repeated for each of the remaining valves one at a time until all of the bleeder valves on the vehicle have been bled. Ideally, the first valve selected should be the one furthest from the master cylinder and the last valve selected should be the one closest to the master cylinder.
    Type: Application
    Filed: May 28, 2002
    Publication date: February 27, 2003
    Inventors: Harold E. Erwin, Abram B. Kuipers
  • Patent number: 6481469
    Abstract: Disclosed is an indicator for use on top of a fluid distributing tank having a flexible diaphragm therein. The indicator warns the user when the tank is almost out of fluid in order to avoid the problem in the prior art systems of running out of fluid during a pressurized flushing process.
    Type: Grant
    Filed: April 23, 2002
    Date of Patent: November 19, 2002
    Inventors: Harold E. Erwin, Abram B. Kuipers
  • Patent number: 6478036
    Abstract: A method and apparatus for cleaning the EGR system of a vehicle is disclosed. The apparatus includes an induction device that is removably attachable to the manifold of an engine in the location of the EGR valve. The induction device includes an adapter plate and a nozzle assembly. The apparatus further includes a solvent administrator removably attachable to the induction device for providing a quantity of solvent to the EGR system.
    Type: Grant
    Filed: June 29, 1999
    Date of Patent: November 12, 2002
    Assignee: BG Products, Inc.
    Inventors: David L. Connors, Daniel P. Degnan, Harold E. Erwin
  • Publication number: 20020144715
    Abstract: A method and apparatus for cleaning the EGR system of a vehicle is disclosed. The apparatus includes an induction device that is removably attachable to the manifold of an engine in the location of the EGR valve. The induction device includes an adapter plate and a nozzle assembly. The apparatus further includes a solvent administrator removably attachable to the induction device for providing a quantity of solvent to the EGR system.
    Type: Application
    Filed: May 31, 2002
    Publication date: October 10, 2002
    Applicant: BG PRODUCTS, INC.
    Inventors: David L. Connors, Daniel P. Degnan, Harold E. Erwin
  • Patent number: 6443192
    Abstract: Provided is a method and an apparatus for loading a tank with brake fluid in an air-free manner which is accomplished by providing a flexible diaphragm in a tank and vacuuming air out underneath the diaphragm to draw new fluid into the tank so that it can be loaded for use in pressurized flushing of brake systems on vehicles. Another aspect of the method and apparatus is an indicator on the top of the tank which warns the user when the tank is almost out of new brake fluid in order to avoid the problem in the prior art systems of running out of new brake fluid during the flushing process.
    Type: Grant
    Filed: August 22, 2001
    Date of Patent: September 3, 2002
    Inventors: Harold E. Erwin, Abram B. Kuipers
  • Patent number: 6170505
    Abstract: An apparatus is provided for replacing the fluid employed in a vehicle component, and includes a bi-directional pump having first and second ports to which service, supply and drain lines are connected. The service line is connected to the first port and includes a free end adapted for receipt in the reservoir of the vehicle. The supply line is connected to the second port and includes a free end adapted for receipt in a replacement-fluid container. In addition the supply line includes a check valve that permits fluid flow in a direction toward the pump while preventing the flow of fluid in a direction away from the pump. The drain line is connected to the second port and includes a check valve that permits fluid flow in a direction away from the pump while preventing the flow of fluid in a direction toward the pump.
    Type: Grant
    Filed: August 6, 1999
    Date of Patent: January 9, 2001
    Assignee: BG Products, Inc.
    Inventor: Harold E. Erwin
  • Patent number: 5692461
    Abstract: A radiator cap assembly for assisting in the removal of coolant from a radiator of an engine is disclosed. The cap has body member with openings at either end and an opening at the side. A conduit extends through the body member. Caps are provided for the traverse opening and another of the openings. A radiator cap member is adapted to secure the body member to a radiator opening.
    Type: Grant
    Filed: June 25, 1996
    Date of Patent: December 2, 1997
    Assignee: BG Products, Inc.
    Inventors: John P. Crovato, Ferdinand J. Crovato, Robert L. Felton, Harold E. Erwin, Galen R. Myers