Hanxin C Zhao

8016046, Sep 13, 2011

Sep 12, 2008

12/209831

Hanxin Zhao - Northbrook IL, US
Marc Largo - Gurnee IL, US

Illinois Tool Works Inc. - Glenview IL

B25B 31/00

173 1, 227 9, 227131

A combustion tool includes a cylinder having a lower end provided with a resilient bumper, a piston dimensioned for reciprocation within the cylinder to impact the bumper at an end of the cylinder and having a driver blade depending therefrom for impacting fasteners. At least one back pressure release opening is disposed in the cylinder to be in alignment with the piston and to be closed by the piston when the piston impacts the bumper.

8070031, Dec 6, 2011

Nov 17, 2006

12/093924

Larry Moeller - Schaumburg IL, US
Hanxin Zhao - Northbrook IL, US

Illinois Tool Works Inc. - Glenview IL

B25C 1/08

227 2, 227 10

A combustion-powered fastener-driving tool includes a tool housing, a power source associated with the housing and including a cylinder head, a cylinder and a piston reciprocating in the cylinder, a valve sleeve reciprocating relative to the cylinder, a chamber switch and a trigger switch; the cylinder head, the valve sleeve, the cylinder and the piston combining to define a combustion chamber, the closing of both switches required for initiating an ignition of the power source for driving piston down cylinder. A fan is disposed in the combustion chamber, and a control system includes a control program associated with the housing, connected to the power source, the chamber switch and the trigger switch, and configured for providing a designated ignition delay period after fuel is injected into the combustion chamber and when the chamber switch is closed, the delay period being variable as a function of monitored tool parameters.

8191751, Jun 5, 2012

Mar 8, 2010

12/719442

Larry M. Moeller - Schaumburg IL, US
Hanxin Zhao - Northbrook IL, US

Illinois Tool Works Inc. - Glenview IL

B25C 1/14

227 10, 227 8, 227130, 123 46 SC

A combustion-powered fastener-driving tool includes a combustion-powered power source including a cylinder head and a combustion chamber defined by the cylinder head, a valve sleeve and an upper surface of a reciprocating piston, the valve sleeve reciprocable relative to the cylinder head between a rest position and a pre-firing position. The valve sleeve has a range of positions between a first sealing position in which the combustion chamber is closed, and said pre-firing position in which the valve sleeve is prevented from further movement. A lockout device is associated with the power source and has an actuated position configured for preventing the reciprocation of the valve sleeve beyond the first sealed position to open the combustion chamber, but permitting movement of the valve sleeve from the first sealed position to the pre-firing position until the piston returns to a piston pre-firing position post combustion.

8636185, Jan 28, 2014

Nov 15, 2010

12/946292

Marc Largo - Gurnee IL, US
Hanxin Zhao - Northbrook IL, US
Christopher H. Porth - Gurnee IL, US
Daniel Birk - McHenry IL, US

Illinois Tool Works Inc. - Glenview IL

B25C 1/08

227 2, 227109, 227130, 227136

A nailer includes a power source including a piston reciprocating within a cylinder, a driver blade secured to the piston for common movement relative to a nosepiece, a magazine connected to the nosepiece for feeding fasteners sequentially for being driven into a workpiece by the driver blade, a delay mechanism operatively associated with the magazine and configured for engaging a second fastener and delaying advancement of the subsequent fastener to the nosepiece until the driver blade returns to the pre-firing position after driving a leading fastener.

20070131731, Jun 14, 2007

Nov 17, 2006

11/601207

Larry Moeller - Schaumburg IL, US
Hanxin Zhao - Northbrook IL, US

B25C 1/14

227010000

A combustion-powered fastener-driving tool includes a combustion-powered power source including a cylinder head and a combustion chamber defined by the cylinder head, a valve sleeve and an upper surface of a reciprocating piston, the valve sleeve reciprocable relative to the cylinder head between a rest position and a pre-firing position. The valve sleeve has a range of positions between a first sealing position in which the combustion chamber is closed, and said pre-firing position in which the valve sleeve is prevented from further movement. A lockout device is associated with the power source and has an actuated position configured for preventing the reciprocation of the valve sleeve beyond the first sealed position to open the combustion chamber, but permitting movement of the valve sleeve from the first sealed position to the pre-firing position until the piston returns to a piston pre-firing position post combustion.

20110204118, Aug 25, 2011

Nov 17, 2006

13/058087

Larry Moeller - Schaumburg IL, US
Frederic Nayrac - F-Bourg Les Valences, FR
Hanxin Zhao - Northbrook IL, US

ILLINOIS TOOL WORKS INC. - Glenview IL

B25C 1/08
B25C 1/18

227 2, 227 9, 227 8

A combustion nailer includes a tool housing, and a combustion engine substantially located within the housing and including a valve sleeve reciprocating relative to a cylinder head for cyclically opening and closing a combustion chamber. A control system is associated with the housing and is connected to the combustion engine for providing for a designated open time for the combustion chamber after a combustion event and before a subsequent combustion can occur.

20130048696, Feb 28, 2013

Aug 31, 2011

13/222549

Marc Largo - Gurnee IL, US
Hanxin Zhao - Northbrook IL, US

ILLINOIS TOOL WORKS INC. - Glenview IL

B25C 1/18
F01B 29/08

227 9, 60632

A combustion tool is provided, including an engine with a ratio of cylinder volume to combustion chamber volume of at least 1.1.

20130206811, Aug 15, 2013

Feb 10, 2012

13/370393

Hanxin Zhao - Northbrook IL, US
Stephen P. Moore - Carpentersville IL, US

Illinois Tool Works Inc. - Glenview IL

B25C 1/04
B25C 5/13

227130, 173 1

A fastener driving tool including a housing enclosing a cylinder having a lower end with a resilient bumper, a return air chamber in communication with the lower end of the cylinder and a piston dimensioned for reciprocation within the cylinder to impact the bumper and having a driver blade depending therefrom. At least one inlet opening is in communication with the return air chamber and at least one outlet opening is disposed in the cylinder and spaced from the at least one inlet opening. The at least outlet opening is in communication with the return air chamber and aligned with the piston so that each outlet opening is closed by the piston to seal the cylinder as the piston impacts the bumper and traps a residual volume of air in the cylinder below the piston to damp impact of the piston upon the bumper.