Darrin R Ihle

20120209478, Aug 16, 2012

Feb 13, 2012

13/371789

Karl L. Dammeyer - St. Marys OH, US
Eric D. Holbrook - Wapakoneta OH, US
Darrin R. Ihle - Sidney OH, US
Marc A. McClain - St. Marys OH, US
Lucas B. Waltz - Coldwater OH, US

CROWN EQUIPMENT CORPORATION - New Bremen OH

G06F 19/00

701 50

A materials handling vehicle is provided comprising: a support structure including a fixed member; a movable assembly coupled to the support structure; a hydraulic system; and a control system. The support structure further comprises lift apparatus to effect movement of the movable assembly relative to the support structure fixed member. The lift apparatus includes at least one ram/cylinder assembly. The hydraulic system includes a motor, a pump coupled to the motor to supply a pressurized fluid to the at least one ram/cylinder assembly, and at least one electronically controlled valve associated with the at least one ram/cylinder assembly. The control structure may estimate a speed of the movable assembly from a speed of the motor and control the operation of the at least one valve using the estimated movable assembly speed.

20130183127, Jul 18, 2013

Jan 4, 2013

13/734070

Karl L. Dammeyer - St. Marys OH, US
Nicholas D. Thobe - Chickasaw OH, US
David J. Obringer - Minster OH, US
Cole T. Steinbrunner - New Bremen OH, US
Marc A. McClain - St. Marys OH, US
Darrin R. Ihle - Sidney OH, US

F15B 21/04
B66F 9/075

414592, 60327

A method for operating a materials handling vehicle includes activating the materials handling vehicle and performing a warm up cycle. During the warm up cycle, energy is provided to at least one valve within the materials handling vehicle so as to energize the valve without providing a working fluid to the valve. Providing energy to the at least one valve effects a heating of oil located within the at least one valve.

20120171004, Jul 5, 2012

Dec 28, 2011

13/338708

Karl L. Dammeyer - St. Marys OH, US
Darrin R. Ihle - Sidney OH, US
Lucas B. Waltz - Coldwater OH, US

B66F 9/22
B66F 9/12
B66F 9/07

414664

A materials handling vehicle is provided comprising: a power unit; a work assembly coupled to the power unit comprising a first auxiliary device; and a fluid supply system. The fluid supply system may comprise: pump structure for supplying a fluid; a first manifold apparatus located on the power unit; a second manifold apparatus located on the work assembly; and fluid supply line structure coupled between the first and second manifolds. The first manifold may receive fluid from the pump structure and comprise valve structure for maintaining fluid pressure at an output port of the first manifold apparatus at a commanded pressure substantially equal to or greater than an operating pressure of the first auxiliary device.

20150344278, Dec 3, 2015

Jul 23, 2015

14/807051

- New Bremen OH, US
Eric D. Holbrook - Findlay OH, US
Darrin R. Ihle - Sidney OH, US
Marc A. McClain - St. Marys OH, US
Lucas B. Waltz - Coldwater OH, US

B66F 9/22
B66F 9/20
B66F 9/07

A materials handling vehicle is provided comprising: a support structure including a first member; a movable assembly coupled to the support structure; a hydraulic system; and a control system. The support structure further comprises lift apparatus to effect movement of the movable assembly relative to the support structure first member. The lift apparatus includes at least one ram/cylinder assembly. The hydraulic system includes a motor, a pump coupled to the motor to supply a pressurized fluid to the at least one ram/cylinder assembly, and at least one electronically controlled valve associated with the ram/cylinder assembly. The control structure may estimate a speed of the movable assembly from a speed of the motor and may control the operation of the at least one valve using a comparison involving the estimated movable assembly speed and a determined speed, and the comparison may not involve use of an operator commanded speed.

20140326541, Nov 6, 2014

Jul 17, 2014

14/333895

- New Bremen OH, US
Eric D. Holbrook - Findlay OH, US
Darrin R. Ihle - Sidney OH, US
Marc A. McClain - St. Marys OH, US
Lucas B. Waltz - Coldwater OH, US

B66F 9/22
B66F 9/08
B66F 9/07

187224

A materials handling vehicle is provided including: a support structure including a fixed member; a movable assembly coupled to the support structure; a hydraulic system; and a control system. The support structure further includes lift apparatus to effect movement of the movable assembly relative to the support structure fixed member. The lift apparatus includes at least one ram/cylinder assembly. The hydraulic system includes a motor, a pump coupled to the motor to supply a pressurized fluid to the at least one ram/cylinder assembly, and at least one electronically controlled valve associated with the at least one ram/cylinder assembly. The control structure may estimate a speed of the movable assembly from a speed of the motor and calculate an updated pump volumetric efficiency using the estimated movable assembly speed and a determined movable assembly speed.

20140326542, Nov 6, 2014

Jul 17, 2014

14/333944

- New Bremen OH, US
Eric D. Holbrook - Findlay OH, US
Darrin R. Ihle - Sidney OH, US
Marc A. McClain - St. Marys OH, US
Lucas B. Waltz - Coldwater OH, US

B66F 9/22
B66F 9/24

187234

A materials handling vehicle is provided comprising: a support structure including a fixed member; a movable assembly coupled to the support structure; a hydraulic system; and a control system. The support structure further comprises lift apparatus to effect movement of the movable assembly relative to the support structure fixed member. The lift apparatus includes at least one ram/cylinder assembly. The hydraulic system includes a motor, a pump coupled to the motor to supply a pressurized fluid to the at least one ram/cylinder assembly, and at least one electronically controlled valve associated with the at least one ram/cylinder assembly. The control structure may measure an electric current flow into and/or out of the hydraulic system motor and reduce an operating speed of the hydraulic system motor if the electric current flow into and/or out of the hydraulic system motor is greater than or equal to a predetermined threshold value.

20140330488, Nov 6, 2014

Jul 17, 2014

14/333980

- New Bremen OH, US
Eric D. Holbrook - Findlay OH, US
Darrin R. Ihle - Sidney OH, US
Marc A. McClain - St. Marys OH, US
Lucas B. Waltz - Coldwater OH, US

B66F 17/00
B66F 9/22

701 50

A materials handling vehicle is provided comprising: a support structure including a fixed member; a movable assembly coupled to the support structure; a hydraulic system; and a control system. The support structure further comprises lift apparatus to effect movement of the movable assembly relative to the support structure fixed member. The lift apparatus includes at least one ram/cylinder assembly. The hydraulic system includes a motor, a pump coupled to the motor to supply a pressurized fluid to the at least one ram/cylinder assembly, and at least one electronically controlled valve associated with the at least one ram/cylinder assembly. The control structure may estimate a speed of the movable assembly from a speed of the motor and control the operation of the at least one valve using the estimated movable assembly speed.