Patents by Inventor Virgil D. Haverdink

Virgil D. Haverdink 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: 4996831
    Abstract: Locking structure for a harvester basket having an upper basket portion telescopingly received within a lower basket portion. Channel lock-ups are located at three of the four corners of the basket. Each lock-up includes two channels, one channel having a length equal to the extension length of the upper basket portion and the other half that length. The two channels are connected together by a pivot pin in the middle of the long channel. One end of the long channel is connected by a pivot pin to the basket and one end of the short channel is connected by a pivot pin to the top of the upper basket portion. As the upper basket portion is raised or lowered, the channels pivot about the middle of the long channel. Approaching the raised position, the upper portion of the long channel may be used as a lever to urge the upper basket to the final extended position.
    Type: Grant
    Filed: May 7, 1990
    Date of Patent: March 5, 1991
    Assignee: Deere & Company
    Inventors: Michael L. Pearson, Steve A. Junge, Virgil D. Haverdink
  • Patent number: 4817370
    Abstract: Cotton suction doors for a cotton picker are rotationally molded from cross-linked polyethylene. Support and guide structure automatically direct the door structure to the operating position alongside the discharge openings in the row unit. The door structure includes two individual compartment structures which are movable in sequence and interlock with each other and with nozzle structure and duct structure to provide a compact and lightweight arrangement which is easy to attach to and remove from the row unit.
    Type: Grant
    Filed: August 19, 1987
    Date of Patent: April 4, 1989
    Assignee: Deere & Company
    Inventors: Timothy A. Deutsch, Virgil D. Haverdink
  • Patent number: 4633791
    Abstract: In a seeding implement, an opener assembly including a compact, arc-shaped opener with a point supported below the surface of the ground during the field-working operation to prevent hairpinning of trash and allow high-speed seeding. The compact configuration reduces variations in seed placement and minimizes side bend forces. The nose configuration of the opener limits the amount of soil that is lifted and thrown to accommodate narrow row spacings. A notched structure is removably mounted on the boot standard of the assembly and the opener is attached to the structure with a single pin. The support structure bears substantially all the loading on the opener during operation and provides convenient mounting and removal of the opener.
    Type: Grant
    Filed: August 31, 1984
    Date of Patent: January 6, 1987
    Assignee: Deere & Company
    Inventors: Harold R. Lindstrom, Virgil D. Haverdink
  • Patent number: 4197916
    Abstract: An improved root crop harvester having a narrow and compact processing chassis adapted to simply and easily receive header assemblies of differing capacities. The header assemblies include a transverse roll conveyor for gathering roots received from the digger wheels into a stream for discharge through a central opening in the transverse conveyor to a fore-and-aft extending roll conveyor carried by the processing chassis. The fore-and-aft roll conveyor is inclined upwardly from front to rear to increase the scrubbing and tumbling action and is also provided with a reversing roll section at its rearward end to discharge the roots to the side. The fore-and-aft conveyor is also sloped across its width at its rearward end to aid in discharging roots transversely to the roll conveyor length. The conveyors on the processing chassis are carried between the support wheels to reduce side drafts, minimize wheel slippage in wet field conditions and improve transport maneuverability.
    Type: Grant
    Filed: September 29, 1978
    Date of Patent: April 15, 1980
    Assignee: Deere & Company
    Inventors: Virgil D. Haverdink, John E. Maust, Jr., Fred C. Livesay, Jr.
  • Patent number: 4192386
    Abstract: A roll conveyor having paired counter-rotating grab rolls includes a reversing roll section on one grab roll for discharging material conveyed along it perpendicularly to the axes of rotation of the paired rolls. One roll of each pair is composed of separate conveying and discharge or reversing sections that are rotatable about a common axes and in opposing directions. The reversing section is provided at one end of the roll conveyor and cooperates with the other rolls at that end to tumble material transversely from the conveyor. The non-reversing rolls adjacent the reversing section are further provided with helical flightings of opposite hand that meet midway along the reversing section to gather material for sideways discharge.
    Type: Grant
    Filed: September 29, 1978
    Date of Patent: March 11, 1980
    Assignee: Deere & Company
    Inventors: Virgil D. Haverdink, Henry J. Landry, Jr.