David A Hacker

US Patent:

7104253, Sep 12, 2006

Filed:

Mar 30, 2005

Appl. No.:

11/093357

Inventors:

Paul J. Dow - Cass City MI, US
David D. Hacker - Bad Axe MI, US

Assignee:

Walbro Engine Management, L.L.C. - Tucson AZ

International Classification:

F02D 9/02

US Classification:

123342, 123 73 A, 123337, 261 392, 261 412

Abstract:

In one presently preferred embodiment a stratified scavenging carburetor has a scavenging air passage with an air control valve and a fuel and air mixing passage with a throttle control valve, and a lost motion coupling associated with the valves to delay opening of the closed air valve until the throttle valve has partially opened from its idle position to an off idle position and preferably thereafter to open the air valve in phased relationship with the throttle valve so that the valves become wide open at substantially the same time. Preferably the coupling has reels associated with the valve and connected by a flexible cord.

US Patent:

7172178, Feb 6, 2007

Filed:

Nov 24, 2004

Appl. No.:

10/996962

Inventors:

David D. Hacker - Bad Axe MI, US

Assignee:

Walbro Engine Management, L.L.C. - Tucson AZ

International Classification:

F02M 7/08

US Classification:

261 342, 261 35

Abstract:

A combustion engine carburetor with a fuel-and-air mixing passage extending through a body and a float bowl engaged sealably to the body. A vacuum actuated acceleration fuel pump is preferably carried by the float bowl and has a hose-less vacuum channel communicating between the fuel-and-air mixing passage downstream of a throttle valve and a vacuum chamber of the acceleration pump. A hose-less fuel discharge channel communicates between a supplemental fuel chamber of the acceleration pump and the fuel-and-air mixing passage between a venturi and a choke valve in the mixing passage. Preferably, the fuel discharge channel has an injecting bore portion defined by the body and being angled to direct fuel in a downstream direction toward the venturi to promote mixing with air.

US Patent:

59842814, Nov 16, 1999

Filed:

Dec 8, 1997

Appl. No.:

8/986735

Inventors:

David D. Hacker - Cass City MI
Eric L. King - Deford MI
George M. Pattullo - Caro MI

Assignee:

Walbro Corporation - Cass City MI

International Classification:

F02M 308

US Classification:

261 71

Abstract:

Improvement in peanut clip limiter cap holder, wherein the clip spring legs are interconnected by a spring web that flexes to accommodate flexing of the clip legs free ends during insertion of the associated limiter caps into the retaining clip, and prolongs the effective friction grip service life of the clip. Optional detent dimples on the clip spring legs and cooperative limiter cap grooves enhance yieldable retention of the caps in the clip and the clip on the needle valves. When the peanut clip is used to install only a single limiter cap on a single needle valve, a dummy stud is mounted to the carburetor in the vacant needle valve position and the stud head occupies the vacant limiter cap position in the clip. An improved needle valve is made as an assembly of a lathe-turned tip/shank part and a separate precision die cast head part. The head part has the needle spring stop flange, the fluted spline portion, the limiter cap barb retention structure, and a cavity telescopically receiving a shank stem to rotationally drive couple the shank and head parts in assembly.

US Patent:

20220235831, Jul 28, 2022

Filed:

Jan 14, 2022

Appl. No.:

17/576148

Inventors:

- Saginaw MI, US
David Hacker - Bad Axe MI, US
Kelly J. Campfield - Pinconning MI, US

International Classification:

F16D 41/12
F16D 11/06

Abstract:

A clutch assembly includes a pocket plate having a pocket and a teeter-totter strut retained in the pocket. The teeter-totter strut is pivotable to an engaged position in which an engagement face of the teeter-totter strut extends out from the pocket plate. The teeter-totter strut is pivotable from the engaged position to a disengaged position in which the engagement face of the teeter-totter strut does not extend out from the pocket plate. The clutch assembly is configured so that when a shock load force acts on the teeter-totter strut, the teeter-totter strut is prevented from moving into the engaged position.

US Patent:

20220176106, Jun 9, 2022

Filed:

Feb 24, 2022

Appl. No.:

17/652428

Inventors:

- Jacksonville FL, US
Patrick W. Kinzie - Glendale AZ, US
Randal C. Schulhauser - Phoenix AZ, US
David C. Hacker - Jacksonville FL, US

International Classification:

A61N 1/05
A61N 1/375
A61B 17/34
A61N 1/36

Abstract:

A method of implanting a lead includes inserting a needle through tissue near a chin of a patient and through a tongue of the patient, inserting an introducer through an opening created by the needle, and inserting the lead through the introducer, the lead comprising an elongated member and one or more electrodes in a distal portion of the elongated member such that the one or more electrodes are implantable proximate to one or more motor points of a protrusor muscle within the tongue of the patient, wherein inserting the lead comprises inserting the lead to have a shape of one of a helix, a compound helix, a wave shape, or saw-tooth shape, or to have a loop in the lead.

US Patent:

20200095959, Mar 26, 2020

Filed:

Oct 26, 2018

Appl. No.:

16/171853

Inventors:

- Sturtevant WI, US
- Cass City MI, US
Paul WESTHOFF, JR. - Kenosha WI, US
Travis P. BAUR - Bay Port MI, US
Kevin L. ISRAELSON - Cass City MI, US
David D. HACKER - Bad Axe MI, US
Nathan BLANK - Burlington WI, US
David Scott SODERMAN - Twin Lakes WI, US

International Classification:

F02M 25/08

Abstract:

A marine outboard engine includes an internal combustion engine including at least one fuel injector; a fuel vapor separator including: a separator body, a fuel reservoir defined by the separator body, and a first fuel pump fluidly connected between the fuel reservoir and the fuel injector; a fuel tank; and a second fuel pump fluidly connected between the fuel tank and the fuel vapor separator. The fuel vapor separator includes a heat exchanger disposed in the separator body. The heat exchanger includes at least one fuel channel defined by the heat exchanger body, the at least one fuel channel including: an inlet adapted for receiving fuel from the engine, and an outlet fluidly communicating with the fuel reservoir; and at least one coolant channel defined by the heat exchanger body, the at least one fuel channel and the at least one coolant channel being in thermal communication.

US Patent:

20140239097, Aug 28, 2014

Filed:

Feb 26, 2014

Appl. No.:

14/190629

Inventors:

- Tucson AZ, US
Elton J. Fisch - Caro MI, US
David D. Hacker - Bad Axe MI, US
Jeffrey D. Hanby - Cass City MI, US
Kevin L. Israelson - Cass City MI, US
Roger N. Smith - Lapeer MI, US

Assignee:

WALBRO ENGINE MANAGEMENT, L.L.C. - Tucson AZ

International Classification:

F02M 37/02

US Classification:

2395332

Abstract:

A fuel pump for a fuel system includes a nozzle, a venturi, a pump inlet and a flow controller. The nozzle has an orifice through which fuel is ejected and the venturi is downstream of the nozzle and has an inlet through which fuel discharged from the orifice flows, a passage downstream of the venturi inlet through which fuel flows to create a drop in pressure in the area of the venturi, and an outlet through which fuel is discharged from the venturi. Fuel is drawn through the pump inlet fuel by the drop in the pressure created in the area of the venturi and the flow controller is downstream of the outlet and has a chamber in which fuel from the venturi outlet is received. The flow controller causes fuel to fill the venturi to ensure performance of the fuel pump.