Patents by Inventor Thomas E. Pfeifer

Thomas E. Pfeifer 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: 6648576
    Abstract: An improved hydraulic system and method of operating same for waste collection vehicles is provided where a closed center valve in conjunction with a positive displacement pump is used without the need for increasing engine RPM, thus significantly reducing vehicle noise during operation of the hydraulic system.
    Type: Grant
    Filed: February 18, 2003
    Date of Patent: November 18, 2003
    Assignee: McClain Industries
    Inventors: Charles A. Duell, Thomas E. Pfeifer
  • Patent number: 6547505
    Abstract: An improved hydraulic system and method of operating same for waste collection vehicles is provided where a closed center valve in conjunction with a positive displacement pump is used without the need for increasing engine RPM, thus significantly reducing vehicle noise during operation of the hydraulic system
    Type: Grant
    Filed: April 8, 2002
    Date of Patent: April 15, 2003
    Assignee: McClain Industries
    Inventors: Charles A. Duell, Thomas E. Pfeifer
  • Patent number: 6332745
    Abstract: An automated refuse vehicle that provides a fast-return cycle for an engaged container, and a series of “lock-out” zones to minimize the possibility of damaging the vehicle during automated use. Methods for using an automated compacting system and for operating the refuse vehicle also form part of the present invention.
    Type: Grant
    Filed: September 21, 2000
    Date of Patent: December 25, 2001
    Assignee: Galion Solid Waste Equipment Co.
    Inventors: Charles A. Duell, Thomas E. Pfeifer, Larry D. Horning
  • Patent number: 6312209
    Abstract: An improved hydraulic system and method of operating same for waste collection vehicles is provided where a closed center valve in conjunction with a positive displacement pump is used without the need for increasing engine RPM, thus significantly reducing vehicle noise during operation of the hydraulic system.
    Type: Grant
    Filed: May 15, 2000
    Date of Patent: November 6, 2001
    Inventors: Charles A. Duell, Thomas E. Pfeifer
  • Patent number: 6123497
    Abstract: An automated refuse vehicle that provides a fast-return cycle for an engaged container, and a series of "lock-out" zones to minimize the possibility of damaging the vehicle during automated use. Methods for using an automated compacting system and for operating the refuse vehicle also form part of the present invention.
    Type: Grant
    Filed: April 27, 1998
    Date of Patent: September 26, 2000
    Assignee: Galion Solid Waste Equipment Co., Inc.
    Inventors: Charles A. Duell, Thomas E. Pfeifer, Larry D. Horning
  • Patent number: 5954470
    Abstract: An improved compacting system, and an automated refuse vehicle that can employ this compacting system. Alternatively, the compacting system can be used with a stationary packer. The compacting system is capable of placing the packer ram, blade or panel into a creep mode in which, even if the maximum compacting force is applied, the packing ram will generally retain its position without reversing direction for a pre-programmed interval of time. The refuse vehicle also provides a fast-return cycle for an engaged container, and a series of "lock-out" zones to minimize the possibility of damaging the vehicle during automated use. Methods for using the compacting system and for operating the refuse vehicle also form part of the present invention.
    Type: Grant
    Filed: December 23, 1996
    Date of Patent: September 21, 1999
    Assignee: Galion Solid Waste Equipment Co, Inc.
    Inventors: Charles A. Duell, Thomas E. Pfeifer, Larry D. Horning
  • Patent number: 5484246
    Abstract: An apparatus for collecting and transporting recyclable waste material which includes a body for receiving material mountable to a vehicle. The body has separate upper and lower material-receiving compartments. Two longitudinally-spaced loaded openings are at the top of the body. One opening is in continuous communication with only the lower compartment, and the second opening, positioned rearward of the first opening, is in continuous communication with only the upper compartment. Separate doors close the rear of each compartment; the second door, when closed, overlies and is spaced from the first door. A bucket, associated with the front of the body, can be raised, lowered and tipped, and has separate bins for receiving material. The bins are aligned with the loaded openings when the bucket is in the tipped, discharge position so that each bin can dump material into a corresponding compartment.
    Type: Grant
    Filed: February 1, 1994
    Date of Patent: January 16, 1996
    Assignee: Galion Holding Company
    Inventors: Larry D. Horning, Eugene R. Grubaugh, Thomas E. Pfeifer, Carroll R. Johnson
  • Patent number: 5316430
    Abstract: A waste hauling apparatus including a truck body divided into two separate compartments by a movable dividing wall. A bucket assembly having separate side-by-side bins is operative to transfer trash material loaded into the bucket by an operator at ground level to the isolated compartments. The bucket travels between a material receiving position and a material discharging position along a trackway having a path of movement including a vertical portion and a transverse portion. At the material discharging position the material contained in the bins is discharged into associated material receiving openings that communicate with respective compartments defined by the truck body. The bucket is reciprocally conveyed between the trash receiving and trash discharging positions by a chain drive mechanism driven by a fluid pressure operated motor and interconnected with the bucket by a linkage mechanism. The linkage mechanism cooperates with the chains to define the limits of movement for the bucket.
    Type: Grant
    Filed: April 15, 1993
    Date of Patent: May 31, 1994
    Assignee: Galion Holding Company
    Inventors: Larry D. Horning, Eugene R. Grubaugh, Thomas E. Pfeifer, Carroll R. Johnson
  • Patent number: 5288196
    Abstract: An apparatus for collecting and transporting recyclable waste material which includes a body for receiving material mountable to a vehicle. The body has separate upper and lower material-receiving compartments. Two longitudinally-spaced loaded openings are at the top of the body. One opening is in continuous communication with only the lower compartment, and the second opening, positioned rearward of the first opening, is in continuous communication with only the upper compartment. Separate doors close the rear of each compartment; the second door, when closed, overlies and is spaced from the first door. A bucket, associated with the front of the body, can be raised, lowered and tipped, and has separate bins for receiving material. The bins are aligned with the loaded openings when the bucket is in the tipped, discharge position so that each bin can dump material into a corresponding compartment.
    Type: Grant
    Filed: May 20, 1992
    Date of Patent: February 22, 1994
    Assignee: Galion Holding Company
    Inventors: Larry D. Horning, Eugene R. Grubaugh, Thomas E. Pfeifer, Carroll R. Johnson
  • Patent number: 4909564
    Abstract: A front loading refuse collection apparatus has a body with a rear area for storing refuse, and a front hopper section for receiving refuse. The storage area has a curved roof, a curved floor and curved sidewalls. The hooper has a top opening, a curve floor and curved sidewalls. The curved sidewalls of the hopper have a smaller radius of curvature than the curved sidewalls of the storage area. The curved sidewalls of the hopper also are not symmetrical about a horizontal axis. In this way, the sidewalls of the hopper do not interfere with the operation of the loading arms and do not unnecessarily restrict the opening at the top of the hopper. The curved roof, curved floor and curved sidewalls are made from an aluminum alloy making the front loading refuse collection apparatus lightweight.
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: March 20, 1990
    Assignee: Peabody International Corporation
    Inventors: Thomas E. Pfeifer, Larry D. Horning
  • Patent number: 4426009
    Abstract: A system for positioning uniformly sized containers such as canned or boxed merchandise in longitudinally extending rows on a laterally extending display shelf adjacent a wall. A spacing member extends laterally on top of the shelf removed from the wall. The spacing member may have a plurality of arcuate recesses formed in the front face thereof for receiving and aligning a row of cans. A plurality of laterally spaced support members are utilized to hold the spacing member in an upright position. The support members each have one end inserted into a space between the rear edge of the shelf and the wall and another end engaged with the spacing member. The support members are dimensioned so that a longitudinally extending row of a predetermined number of abutting containers will substantially extend between the front edge of the shelf and the spacing member. The system allows quick and efficient stocking of containerized merchandise on the front portion of the shelf.
    Type: Grant
    Filed: January 26, 1981
    Date of Patent: January 17, 1984
    Inventor: Thomas E. Pfeifer