Hisaya Iwata from 14630 Marcella Ln, Brookfield, WI 53005, age 65, Phone: 2627549628

Governor With Take-Up Spring
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US Patent:

7353802, Apr 8, 2008
Filed:

Jan 10, 2007
Appl. No.:

11/651734
Inventors:

Hisaya Iwata - Brookfield WI, US
Bradley Demi - Campbellsport WI, US
Assignee:

Briggs & Stratton Corporation - Wauwatosa WI
International Classification:

F02D 31/00
F02D 11/04
US Classification:

123376, 123363
Abstract:

A governor for an engine includes a speed sensor coupled to the engine that moves in response to changes in engine speed. The governor further includes a linkage coupled between the speed sensor and a throttle member to move the throttle member between a first position and a second position. A governor spring couples to the throttle member. A friction spring couples to the throttle member and includes a coil portion frictionally engaged with the linkage.

Engine With An Automatic Choke And Method Of Operating An Automatic Choke For An Engine
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US Patent:

8219305, Jul 10, 2012
Filed:

May 15, 2009
Appl. No.:

12/466593
Inventors:

Hisaya Iwata - Brookfield WI, US
Robert Koenen - Pewaukee WI, US
Andrew Perez - Brookfield WI, US
Assignee:

Briggs & Stratton Corporation - Wauwatosa WI
International Classification:

G06F 19/00
US Classification:

701113
Abstract:

An automatic choke connectable to an engine. Also disclosed is an engine including the automatic choke, an apparatus including the engine and the automatic choke, and a method of controlling a choke valve. The automatic choke includes a motor for moving a choke valve and a controller electrically connected to the motor. In one construction, the controller is configured to store position information and a flag related to a position of the choke valve, determine the engine has, and control the automatic choke with the stored position information based on the flag and the determination that the engine has re-started. In another construction, the controller is configured to generate a motor control signal to direct the choke valve to a fully-open position without providing choke relief based on a temperature value indicating the engine temperature is greater than a threshold.

Engine With An Automatic Choke And Method Of Operating An Automatic Choke For An Engine
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US Patent:

8434444, May 7, 2013
Filed:

May 15, 2009
Appl. No.:

12/466583
Inventors:

Hisaya Iwata - Brookfield WI, US
Robert Koenen - Pewaukee WI, US
Andrew Perez - Brookfield WI, US
Assignee:

Briggs & Stratton Corporation - Wauwatosa WI
International Classification:

F02D 41/06
F02M 1/10
US Classification:

12317918, 123362, 123399, 261 391, 701113
Abstract:

A method of controlling a choke valve of an engine with a controller is disclosed. Also disclosed is an automatic choke performing the method, an engine having the automatic choke, and an apparatus having the engine. The controller includes an electronic circuit, such as a programmable device, and is coupled to a temperature sensor and a motor. The method includes determining a temperature value using the temperature sensor, determining a time period to hold the choke valve in a first position, keeping the choke valve at the first position for the time period, moving the choke valve from the first position toward a second position using the motor, determining a count to hold the choke valve, keeping the choke valve at the second position for the count, and moving the choke valve from the second position toward a fully open position.

Engine With An Automatic Choke And Method Of Operating An Automatic Choke For An Engine
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US Patent:

8434445, May 7, 2013
Filed:

Jul 9, 2012
Appl. No.:

13/544544
Inventors:

Hisaya Iwata - Brookfield WI, US
Robert Koenen - Pewaukee WI, US
Andrew Perez - Brookfield WI, US
Assignee:

Briggs & Stratton Corporation - Wauwatosa WI
International Classification:

F02N 1/00
US Classification:

1231794, 12317915
Abstract:

An engine including an automatic choke that includes a choke valve movable between a fully closed position and a fully open position, a temperature sensor coupled to the engine and operable to provide a temperature signal indicative of a temperature of the engine, and a motor connected to the choke valve and operable to move the choke valve in response to a motor control signal. A controller is electrically connected to the motor and to the temperature sensor. The controller includes an electronic circuit having a memory. A table includes engine specific choke position data stored in memory, wherein the controller determines a choke initial position based on the temperature of the engine and the choke position data, and wherein the motor moves the choke valve toward that position in response to an attempt to start the engine.

Automatic Choke For An Engine
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US Patent:

20050022798, Feb 3, 2005
Filed:

Feb 23, 2004
Appl. No.:

10/784542
Inventors:

David Roth - Fond du Lac WI, US
James Dehn - Brookfield WI, US
Thomas Guntly - Hartford WI, US
Curtis Schultz - Grafton WI, US
Hisaya Iwata - Brookfield WI, US
Steven Schlosser - Fond du Lac WI, US
Travis Nickels - Milwaukee WI, US
Gregory Irwin - Eagle WI, US
Kenneth Breitenstein - Cedarburg WI, US
Steven Dethloff - Pewaukee WI, US
International Classification:

F02M001/10
US Classification:

123676000, 123179180, 261039300
Abstract:

An automatic choke apparatus for use in an internal combustion engine. The choke apparatus includes a choke valve automatically operable in response to the speed of the engine, a thermally conductive assembly that conducts heat from exhaust gases produced by the engine, a thermally responsive member in thermal communication with the thermally conductive assembly, and a mechanism that moves in response to the thermally responsive member to cause the choke valve to remain in at least a partially open position during engine starting when the thermally responsive member senses a temperature above a predetermined temperature. The thermally conductive assembly at least partially surrounds the path of the exhaust gases.

Hisaya Iwata