Patents by Inventor Robert J. Henshaw

Robert J. Henshaw 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: 7267369
    Abstract: A truck has a power unit including a main casing for housing drive apparatus and a platform onto which an operator may step and ride while controlling the truck. The casing includes at least one substantially rigid wall member and an operator support pad associated with the wall member. The support pad includes a main body having a first portion defining a deformable pocket.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: September 11, 2007
    Assignee: Crown Equipment Corporation
    Inventors: Michael P. Gallagher, Robert J. Henshaw
  • Patent number: 6948739
    Abstract: A pallet truck has a power unit including a main casing for housing drive apparatus and a platform onto which an operator may step and ride while controlling the truck. The casing includes at least one substantially rigid wall member and an operator support pad associated with the wall member. The support pad includes a main body having first and second ribbed portions with the first portion defining a deformable pocket.
    Type: Grant
    Filed: July 22, 2003
    Date of Patent: September 27, 2005
    Assignee: Crown Equipment Corporation
    Inventors: Michael P. Gallagher, Robert J. Henshaw
  • Patent number: 6883625
    Abstract: Supplemental walk along control for walkie/rider pallet trucks is provided by supplemental controllers such as jog and coast release switches and/or twist grips (or other drive motor speed controllers) provided adjacent the base of load carrying forks. The supplemental controllers are enabled during coasting operation so that operators can advance to the base of the forks to accelerate the trucks between closely spaced picks located along substantially straight portions of pick routes. For application of the trucks' brakes, the operators activate the coast release switches to release the coast mode and enable deadman brake mechanisms to brake the trucks and/or by plug braking with the twist grips. A steering direction detector is provided to determine the direction of the steered wheel so that if the steered wheel is not directed substantially straight ahead, then operation of the truck from the supplemental controls is disabled.
    Type: Grant
    Filed: August 7, 2002
    Date of Patent: April 26, 2005
    Assignee: Crown Equipment Corporation
    Inventors: Allen T. Trego, John I. Koeper, Robert J. Henshaw
  • Patent number: 6595306
    Abstract: Supplemental walk along control for walkie/rider pallet trucks is provided by supplemental jog switches and coast release switches provided adjacent to the base of load carrying forks. The supplemental jog switches are enabled during coasting operation so that operators can advance to the base of the forks to accelerate the trucks between closely spaced picks located along substantially straight portions of pick routes. For application of the trucks' brakes, the operators activate the coast release switches to release the coast mode and enable deadman brake mechanisms to brake the trucks. A steering direction detector is provided to determine the direction of the steered wheel so that if the steered wheel is not directed substantially straight ahead, then operation of the truck from the supplemental jog switches is disabled.
    Type: Grant
    Filed: August 9, 2001
    Date of Patent: July 22, 2003
    Assignee: Crown Equipment Corporation
    Inventors: Allen T. Trego, John I. Koeper, Robert J. Henshaw
  • Publication number: 20030029647
    Abstract: Supplemental walk along control for walkie/rider pallet trucks is provided by supplemental jog switches and coast release switches provided adjacent to the base of load carrying forks. The supplemental jog switches are enabled during coasting operation so that operators can advance to the base of the forks to accelerate the trucks between closely spaced picks located along substantially straight portions of pick routes. For application of the trucks' brakes, the operators activate the coast release switches to release the coast mode and enable deadman brake mechanisms to brake the trucks. A steered direction detector is provided to determine the direction of the steered wheel so that if the steered wheel is not directed substantially straight ahead, then operation of the truck from the supplemental jog switches is disabled.
    Type: Application
    Filed: August 9, 2001
    Publication date: February 13, 2003
    Inventors: Allen T. Trego, John I. Koeper, Robert J. Henshaw
  • Publication number: 20030029648
    Abstract: Supplemental walk along control for walkie/rider pallet trucks is provided by supplemental controllers such as jog and coast release switches and/or twist grips (or other drive motor speed controllers) provided adjacent the base of load carrying forks. The supplemental controllers are enabled during coasting operation so that operators can advance to the base of the forks to accelerate the trucks between closely spaced picks located along substantially straight portions of pick routes. For application of the trucks' brakes, the operators activate the coast release switches to release the coast mode and enable deadman brake mechanisms to brake the trucks and/or by plug braking with the twist grips. A steering direction detector is provided to determine the direction of the steered wheel so that if the steered wheel is not directed substantially straight ahead, then operation of the truck from the supplemental controls is disabled.
    Type: Application
    Filed: August 7, 2002
    Publication date: February 13, 2003
    Inventors: Allen T. Trego, John I. Koeper, Robert J. Henshaw
  • Patent number: 6199665
    Abstract: Each straddle arm of a lift truck is formed from a cylindrical section of steel pipe or tubing which is continuous in its circumference, to evenly distribute the torque which is transferred from a forwardly extending portion of the straddle arm to a mast assembly of the truck.
    Type: Grant
    Filed: October 22, 1998
    Date of Patent: March 13, 2001
    Assignee: Crown Equipment Corporation
    Inventors: Robert L. Eilerman, Robert J. Henshaw, Patrick A. Tebbe
  • Patent number: 6182778
    Abstract: The motor compartment of a fork lift truck is modified so that the operator's feet extend into the space normally required by the motor compartment. A motor support structure is installed between the traction motor and the gear box which is connected to the steerable, powered wheel. The motor support structure occupies a smaller space than the traction motor itself, thus increasing the space available to the operator's compartment, at least in a limited vertical location adjacent to the support. With the traction motor out of the way, sufficient space for elevated pedals is provided, thus providing the operator ample space to operate the truck while seated. A battery compartment and hydraulic system of the truck are positioned adjacent to one another and ahead of the operator's compartment/motor compartment. In this way, the battery compartment and hydraulic system are positioned such that they are clear of the operator's compartment.
    Type: Grant
    Filed: August 26, 1998
    Date of Patent: February 6, 2001
    Assignee: Crown Equipment Corporation
    Inventors: Robert J. Henshaw, Randall D. Plaugher, Patrick A. Tebbe
  • Patent number: 6182797
    Abstract: A fork lift truck is provided comprising: a power unit including an operator's compartment and at least one equipment compartment; a pair of forks; a fork carriage assembly coupled to the forks; and a mast assembly. The mast assembly is coupled to the fork carriage assembly and the power unit for vertically moving the fork carriage assembly including the forks relative to the power unit. A hydraulic pump system is also provided. It has at least one hydraulic motor/pump assembly mounted in the at least one equipment compartment and at least one fluid reservoir located laterally of the mast assembly.
    Type: Grant
    Filed: March 17, 1999
    Date of Patent: February 6, 2001
    Assignee: Crown Equipment Corporation
    Inventors: Patrick A. Tebbe, Robert J. Henshaw, Daniel C. Magoto
  • Patent number: D516096
    Type: Grant
    Filed: September 23, 2004
    Date of Patent: February 28, 2006
    Assignee: Crown Equipment Corporation
    Inventors: Brent A. Bergman, Todd M. Fullenkamp, Michael P. Gallagher, Kevin A. Gilliland, Robert J. Henshaw, Leroy M. Kluver, Russell J. Kroll, Philip D. Palermo, Steven R. Pulskamp, Craig J. Rekow, Douglas J. Rinderle, Adam M. Ruppert
  • Patent number: D516097
    Type: Grant
    Filed: September 23, 2004
    Date of Patent: February 28, 2006
    Assignee: Crown Equipment Corporation
    Inventors: Brent A. Bergman, Steven C. Billger, Todd M. Fullenkamp, Michael P. Gallagher, Kevin A. Gilliland, Robert J. Henshaw, Eric J. Kaiser, Leroy M. Kluver, Russell J. Kroll, Philip D. Palermo, Steven R. Pulskamp, Craig J. Rekow, Douglas J. Rinderle, Adam M. Ruppert
  • Patent number: D516098
    Type: Grant
    Filed: September 23, 2004
    Date of Patent: February 28, 2006
    Assignee: Crown Equipment Corporation
    Inventors: Steven C. Billger, Kevin A. Gilliland, Robert J. Henshaw, Eric J. Kaiser, Leroy M. Kluver, Philip D. Palermo, Steven R. Pulskamp, Craig J. Rekow, Douglas J. Rinderle, Adam M. Ruppert
  • Patent number: D518269
    Type: Grant
    Filed: October 2, 2003
    Date of Patent: March 28, 2006
    Assignee: Crown Equipment Corporation
    Inventors: Robert J. Henshaw, Eric J. Hanson, Roger J. Quinlan
  • Patent number: D526109
    Type: Grant
    Filed: September 23, 2004
    Date of Patent: August 1, 2006
    Assignee: Crown Equipment Corporation
    Inventors: Brent A. Bergman, Robert J. Henshaw, Russell J. Kroll, Philip D. Palermo, Steven R. Pulskamp, Craig J. Rekow, Douglas J. Rinderle, Adam M. Ruppert
  • Patent number: D526757
    Type: Grant
    Filed: September 23, 2004
    Date of Patent: August 15, 2006
    Assignee: Crown Equipment Corporation
    Inventors: Brent A. Bergman, Michael P. Gallagher, Robert J. Henshaw, Russell J. Kroll, Philip D. Palermo, Steven R. Pulskamp, Craig J. Rekow, Douglas J. Rinderle, Adam M. Ruppert
  • Patent number: D475412
    Type: Grant
    Filed: April 23, 2002
    Date of Patent: June 3, 2003
    Assignee: Crown Equipment Corporation
    Inventors: Robert J. Henshaw, Russell J. Kroll, Philip D. Palermo, Michael P. Gallagher
  • Patent number: D559497
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: January 8, 2008
    Assignee: Crown Equipment Corporation
    Inventors: Adam M. Ruppert, Benjamin J. Purrenhage, Roger J. Quinlan, Jr., Robert J. Henshaw, Steven R. Pulskamp, Michael P. Gallagher
  • Patent number: D492833
    Type: Grant
    Filed: June 6, 2003
    Date of Patent: July 6, 2004
    Assignee: Crown Equipment Corporation
    Inventors: Robert J. Henshaw, Michael P. Gallagher
  • Patent number: D407176
    Type: Grant
    Filed: September 20, 1996
    Date of Patent: March 23, 1999
    Assignee: Crown Equipment Corporation
    Inventors: Robert J. Henshaw, Philip D. Palermo, Steven R. Pulskamp, Donald E. Luebrecht, Michael P. Gallagher, Timothy S. Quellhorst, Allen T. Trego
  • Patent number: D407177
    Type: Grant
    Filed: March 18, 1998
    Date of Patent: March 23, 1999
    Assignee: Crown Equipment Corporation
    Inventors: Robert J. Henshaw, Philip D. Palermo, Steven R. Pulskamp, Donald E. Luebrecht, Michael P. Gallagher, Timothy S. Quellhorst, Allen T. Trego