Patents by Inventor Louis R. Erwin

Louis R. 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).

  • Patent number: 4350301
    Abstract: A pressure regulating nozzle that may be incorporated within a fluid supplying device such as a fuel injector. The nozzle or spray tip comprises a reciprocating piston adapted to move a plunger which is slidably located within an outlet bore. The piston further contains a plurality of control orifices located within a bottom portion to provide a controlled pressure drop thereacross to regulate the pressure within the nozzle at a relatively constant value. The nozzle further includes a series orifice, located between the piston and the fluid supply for isolating the piston from upstream pressure surges and to develop rate feedback forces to damp the motion of the piston. In one embodiment of the invention the spray tip includes a plurality of outlet orifices located in fluid communication with the outlet bore wherein the open area of the outlet orifices is modulated by the movement of the plunger in response to the reciprocating motion of the piston.
    Type: Grant
    Filed: June 25, 1980
    Date of Patent: September 21, 1982
    Assignee: The Bendix Corporation
    Inventors: Louis R. Erwin, Granville W. Hurlong, Jr.
  • Patent number: 4241753
    Abstract: For use with a variable displacement piston type pump, a valve responsive to pump discharge manifold pressure for controlling the pressure in the pump chamber, and which controlled pressure creates a force for regulating the stroke of the pump pistons to maintain a predetermined substantially constant pressure with a variable flow of fluid through the pump.
    Type: Grant
    Filed: June 18, 1979
    Date of Patent: December 30, 1980
    Assignee: The Bendix Corporation
    Inventors: Louis R. Erwin, Frank Woodruff
  • Patent number: 4235374
    Abstract: A fuel injector (10) is provided for each cylinder of an internal combustion engine, the injector including an electronically operated control valve (146) disposed between supply passage (42) and a timing chamber (98) to control the admission of fuel into and out of the timing chamber. A primary pumping plunger (62) and a secondary plunger (90) are axially spaced within the central bore of the injection body, and a normally closed injection nozzle (14) is situated at one end of the injector body. A mechanical linkage (27, 28, 30) associated with the camshaft of the engine drives the primary pumping plunger (62) against the bias of a main spring (18). The timing chamber (98) is defined between the plungers (62, 90) and a metering chamber (128) is defined between the secondary plunger (90) and the nozzle (14).
    Type: Grant
    Filed: January 25, 1979
    Date of Patent: November 25, 1980
    Assignee: The Bendix Corporation
    Inventors: Richard P. Walter, Albert E. Sisson, Louis R. Erwin, Charles R. Kelso
  • Patent number: 4142448
    Abstract: A rack and pinion power steering gear assembly includes a housing with a longitudinal bore and a sleeve slidably mounted in the longitudinal bore. The rack is slidably mounted within the sleeve and cooperates with the sleeve to communicate an inlet port to either a first working chamber or a second working chamber when the rack moves from a first position to a second position. The rack and sleeve also cooperate with each other to define a pair of feedback chambers and the rack moves from a first position to communicate the inlet port with the first feedback chamber to a second position to communicate the inlet port with the second feedback chamber.
    Type: Grant
    Filed: February 3, 1977
    Date of Patent: March 6, 1979
    Assignee: The Bendix Corporation
    Inventor: Louis R. Erwin
  • Patent number: 4131055
    Abstract: A hydraulic brake booster operatively connects with a pressurized fluid source and a master brake cylinder to convert the pressure within the pressurized fluid source to a power assist to the master brake cylinder during a brake application. The booster includes a cylindrical housing defining a bore and a piston is slidably mounted in the bore to define a pressure chamber and to operatively connect with the master brake cylinder. A valve member is slidably disposed within a bore within the piston and is movable upon a brake application to communicate the pressurized fluid source to the pressure chamber which urges the piston into engagement with the master brake cylinder. In a rest position inlet and outlet openings on the piston communicate fluid through the piston without any transfer of the force within the pressurized fluid to the piston.
    Type: Grant
    Filed: February 3, 1977
    Date of Patent: December 26, 1978
    Assignee: The Bendix Corporation
    Inventor: Louis R. Erwin