Patents by Inventor Donald E. Luebrecht
Donald E. Luebrecht 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: 8454718Abstract: A work vehicle is provided comprising: a main frame including an engine compartment; an engine located in the engine compartment; and a cooling system comprising a rotating fan apparatus and a cooling assembly. The cooling assembly may comprise a heat exchanger for transferring energy in the form of heat from a coolant fluid to air and a filter apparatus positioned adjacent an engine-compartment side of the heat exchanger. The air may be moved through the heat exchanger by the fan apparatus. The filter apparatus may filter the air before the air passes through the heat exchanger. The filter apparatus may comprise filter structure and a suction device for removing debris from the filter structure. The suction device preferably expels the debris outside of the engine compartment.Type: GrantFiled: February 19, 2010Date of Patent: June 4, 2013Assignee: Crown Equipment CorporationInventors: Juergen Buchmann, Dean E. Davis, Derek M. Gamertsfelder, Jason R. Kremer, Donald E. Luebrecht, Joerg Nellen, Nicholas J. Stein
-
Patent number: 7871117Abstract: A materials handling vehicle is provided. The vehicle comprises a main body, a seat deck assembly including an operator seat, and structure for movably mounting the seat deck assembly to the main body. The seat deck assembly moves relative to the main body along a varying radius path.Type: GrantFiled: May 11, 2007Date of Patent: January 18, 2011Assignee: Crown Equipment CorporationInventors: Ryan R. Berger, Michael P. Gallagher, John P. Jones, Thornton K. Lothrop, Donald E. Luebrecht, Rainer B. Teufel, Juergen Buchmann, Edgar Wahnemuehl
-
Publication number: 20100242866Abstract: A work vehicle is provided comprising: a main frame including an engine compartment; an engine located in the engine compartment; and a cooling system comprising a rotating fan apparatus and a cooling assembly. The cooling assembly may comprise a heat exchanger for transferring energy in the form of heat from a coolant fluid to air and a filter apparatus positioned adjacent an engine-compartment side of the heat exchanger. The air may be moved through the heat exchanger by the fan apparatus. The filter apparatus may filter the air before the air passes through the heat exchanger. The filter apparatus may comprise filter structure and a suction device for removing debris from the filter structure. The suction device preferably expels the debris outside of the engine compartment.Type: ApplicationFiled: February 19, 2010Publication date: September 30, 2010Applicant: CROWN EQUIPMENT CORPORATIONInventors: Juergen Buchmann, Dean E. Davis, Derek M. Gamertsfelder, Jason R. Kremer, Donald E. Luebrecht, Joerg Nellen, Nicholas J. Stein
-
Patent number: 6174124Abstract: A multi-task capable work assist vehicle is designed for transporting an operator and items to be handled by the operator and for elevating the operator with such items supported upon a load tray elevated with the operator. Preferably the load tray is mounted for positioning along a telescoping mast which supports and elevates the operator. A load deck or load platform is provided on a body of the vehicle in addition to the load tray so that items such as packages, tools, parts, merchandise and the like can be carried by the vehicle. Load shelves may also be provided adjacent the load deck to add flexibility and capacity to the load carrying capability of the vehicle. Uses of the vehicle include order picking, in-house service maintenance, stock management, cargo delivery and the like. It is designed to be compact in size and highly maneuverable for use in narrow storage aisles and tight quarters.Type: GrantFiled: September 1, 1998Date of Patent: January 16, 2001Assignee: Crown Equipment CorporationInventors: Forrest A. Haverfield, Timothy S. Quellhorst, Donald E. Luebrecht, Kevin A. Gilliland, Michael P. Gallagher, Thomas L. Bidwell, Harold A. Stammen, William J. Heidemann, Paul J. Leasor, Leif A. Norland, Thomas W. Linn, Joe H. Knapschaefer, Rob J. Stauffer, David B. Smith, John McClusky
-
Patent number: 6135694Abstract: A fork lift truck includes a body, a drive mechanism supported on the body for effecting movement of the body, and a fork carrying assembly carrying forks which can be moved in height between a lowered position and desired raised positions. A tilt cylinder is provided for tilting the forks through a fork tilt range. The truck further includes a pressure sensor capable of generating signals indicative of the weight of a load on the forks, a fork tilt position sensor capable of being activated when the forks are tilted to extremes of the fork tilt range, and a controller. The controller is coupled to the drive mechanism, the pressure sensor and the fork tilt position sensor.Type: GrantFiled: September 29, 1998Date of Patent: October 24, 2000Assignee: Crown Equipment CorporationInventors: Allen T. Trego, Daniel C. Magoto, Donald E. Luebrecht
-
Patent number: 6019190Abstract: A work assist vehicle includes a self propelled, steerable body having a chassis and a drive mechanism supported on the chassis; a mast assembly coupled to the body; and, a personnel compartment attached to the mast assembly and being movable by the mast assembly toward and away from the body. The body further includes a cover adapted to extend over a portion of the chassis and a weight sensor assembly coupled to the chassis and the cover. The weight sensor assembly is capable of detecting if someone or something is located on the cover.Type: GrantFiled: August 28, 1998Date of Patent: February 1, 2000Assignee: Crown Equipment CorporationInventors: Donald E. Luebrecht, Kevin A. Gilliland, Matthew P. Ranly, Harold A. Stammen, William J. Heidemann, David B. Smith
-
Patent number: 5992572Abstract: A personnel carrying vehicle comprising a self propelled, steerable body, a telescoping mast attached to and extending upwardly from said body, and a personnel compartment attached to the mast and provided with a rail member that extends from the mast and around the sides. A pair of gate members, which are pivotally attached to the rail member and to the floor of the compartment, are movable from a closed position to an open position wherein said gate members extend into the compartment.Type: GrantFiled: April 2, 1999Date of Patent: November 30, 1999Assignee: Crown Equipment CorporationInventors: Kevin A. Gilliland, Thomas L. Bidwell, Eugene G. Bruns, Bradley A. Burns, Joseph H. Knapschaefer, John F. McClusky, Lief A. Norland, Daniel L. Sherman, David B. Smith, Harold A. Stammen, Robert J. Stauffer, Donald E. Luebrecht, Ronald A. Grisez, William J. Heidemann
-
Patent number: D405581Type: GrantFiled: September 20, 1996Date of Patent: February 9, 1999Assignee: Crown Equipment CorporationInventors: Robert J. Henshaw, Michael W. Henderson, Donald E. Luebrecht, Michael P. Gallagher, Edward E. Ahigian, Brent A. Bergman
-
Patent number: D407176Type: GrantFiled: September 20, 1996Date of Patent: March 23, 1999Assignee: Crown Equipment CorporationInventors: Robert J. Henshaw, Philip D. Palermo, Steven R. Pulskamp, Donald E. Luebrecht, Michael P. Gallagher, Timothy S. Quellhorst, Allen T. Trego
-
Patent number: D407177Type: GrantFiled: March 18, 1998Date of Patent: March 23, 1999Assignee: Crown Equipment CorporationInventors: Robert J. Henshaw, Philip D. Palermo, Steven R. Pulskamp, Donald E. Luebrecht, Michael P. Gallagher, Timothy S. Quellhorst, Allen T. Trego
-
Patent number: D409349Type: GrantFiled: September 30, 1997Date of Patent: May 4, 1999Assignee: Crown Equipment CorporationInventors: Thomas Bidwell, Michael P Gallagher, Kevin A. Gilliland, Joseph H Knapschaefer, Donald E Luebrecht, John F McClusky, Leif A Norland, Steven R Pulskamp, Harold A Stammen, Robert J Stauffer, Ronald A Grisez
-
Patent number: D412866Type: GrantFiled: September 13, 1996Date of Patent: August 17, 1999Assignee: Crown Equipment CorporationInventors: Thomas Bidwell, Michael P. Gallagher, Kevin A. Gilliland, Joseph H. Knapschaefer, Donald E. Luebrecht, John F. McClusky, Leif A. Norland, Steven R. Pulskamp, Harold A. Stammen, Robert J. Stauffer
-
Patent number: D424777Type: GrantFiled: March 13, 1998Date of Patent: May 9, 2000Assignee: Crown Equipment CorporationInventors: Thomas Bidwell, Michael P Gallagher, Kevin A. Gilliland, Joseph H Knapschaefer, Donald E Luebrecht, John F McClusky, Leif A Norland, Steven R Pulskamp, Harold A Stammen, Robert J Stauffer, Ronald A Grisez
-
Patent number: RE44700Abstract: A materials handling vehicle is provided. The vehicle comprises a main body, a seat deck assembly including an operator seat, and structure for movably mounting the seat deck assembly to the main body. The seat deck assembly moves relative to the main body along a varying radius path.Type: GrantFiled: March 24, 2011Date of Patent: January 14, 2014Assignee: Crown Equipment CorporationInventors: Ryan R. Berger, Michael P. Gallagher, John P. Jones, Thornton K. Lothrop, Donald E. Luebrecht, Rainer B. Teufel, Juergen Buchmann, Edgar Wahnemuehl