Patents Assigned to Multi-Shifter, Inc.
  • Patent number: 8025474
    Abstract: A battery-changing vehicle includes a mobile carriage, a frame disposed above the mobile carriage, and a boom assembly connected to the frame. The mobile carriage defines a loading deck for receiving and transporting a battery. The boom assembly includes a lift hoist that lifts a battery to and from the loading deck. The lift hoist is capable of lateral movement between an extended disposition, at which the lift hoist is cantilevered away from the loading deck, and a withdrawn disposition, at which the lift hoist is disposed above the loading deck. The battery-changing vehicle may also include a transfer arm capable of transferring a battery to and from the loading deck.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: September 27, 2011
    Assignee: Multi-Shifter, Inc.
    Inventors: Eric D. Springston, John R. Pratt, Dale A. Williams
  • Patent number: 7938612
    Abstract: A battery-changing vehicle includes a mobile carriage, a frame disposed above the mobile carriage, and a boom assembly connected to the frame. The mobile carriage defines a loading deck for receiving and transporting a battery. The boom assembly includes a lift hoist that lifts a battery to and from the loading deck. The lift hoist is capable of lateral movement between an extended disposition, at which the lift hoist is cantilevered away from the loading deck, and a withdrawn disposition, at which the lift hoist is disposed above the loading deck. The battery-changing vehicle may also include a transfer arm capable of transferring a battery to and from the loading deck.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: May 10, 2011
    Assignee: Multi-Shifter, Inc.
    Inventors: Eric D. Springston, John R. Pratt, Dale A. Williams
  • Publication number: 20090014219
    Abstract: There is provided a cart for lifting and moving materials. The cart includes a lift mechanism for raising and lowering a support surface to lift the materials during transport. The cart also includes a motorized drive wheel assembly which provides a drive force in a forward or backward direction to assist the operator in moving the materials. The motorized drive wheel assembly has a variable vertical position relative to the cart wheels to enable the drive wheels to provide a drive force over contoured surfaces, such as near the base or top of a ramp. The motorized drive wheel assembly also includes a weight to maintain a minimum normal force for traction and includes a differential to allow the drive wheels to rotate at differing speeds to facilitate convenient steering of the cart. The cart is powered by one or more rechargeable batteries.
    Type: Application
    Filed: January 19, 2006
    Publication date: January 15, 2009
    Applicant: MULTI-SHIFTER INC.
    Inventors: Eric D. Springston, John R. Pratt, Dale A. Williams
  • Patent number: 7220222
    Abstract: There is provided a cart for transporting dies, molds, and similar objects. The cart includes a lift mechanism for raising and lowering a support surface to the height of the surface onto which or from which the die will be moved. The support surface includes a transfer mechanism for coupling to the die, either with an electromagnet or a suction device, to thereby slide the die as desired without damaging critical components on the exterior of the die. The cart also includes a motorized drive wheel assembly which provides a drive force in a forward or backward direction to assist the operator in moving a die that has been transferred onto the cart. The cart is powered by one or more rechargeable batteries. The cart enables a single operator to safely and conveniently remove, insert, and transport dies or other similar objects.
    Type: Grant
    Filed: November 10, 2005
    Date of Patent: May 22, 2007
    Assignee: Multi-Shifter Inc.
    Inventors: Eric D. Springston, John R. Pratt, Dale A. Williams
  • Patent number: 6543986
    Abstract: The present invention discloses either an apparatus that is adapted for selective mounting to and demounting from a pallet jack for use therewith or a transport vehicle having an apparatus permanently mounted thereto, which can effectively and efficiently transport articles or stacks of objects, such as boxes, furniture, trays, or the like from one location to another. The apparatus comprises a housing and an article engaging and lifting member, which includes a base and a back support member for supporting the article or stacks of objects. The article engaging and lifting member is pivotally mounted to the housing, preferably adjacent the bottom of the back support member. In one embodiment, the apparatus further includes a first clamp member for maintaining the article adjacent the back support member.
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: April 8, 2003
    Assignee: Multi-Shifter, Inc.
    Inventors: Eric D. Springston, John R. Pratt, John Schoenma ker, Dale A. Williams
  • Patent number: 6247887
    Abstract: The present invention discloses either an apparatus that is adapted for selective mounting to and demounting from a pallet jack for use therewith or a transport vehicle having an apparatus permanently mounted thereto, which can effectively and efficiently transport articles or stacks of objects, such as boxes, furniture, trays, or the like from one location to another. The apparatus comprises a housing and an article engaging and lifting member, which includes a base and a back support member for supporting the article or stacks of objects. The article engaging and lifting member is pivotally mounted to the housing, preferably adjacent the bottom of the back support member. In one embodiment, the apparatus further includes a first clamp member for maintaining the article adjacent the back support member.
    Type: Grant
    Filed: February 25, 1999
    Date of Patent: June 19, 2001
    Assignee: Multi-Shifter, Inc.
    Inventors: Eric D. Springston, John R. Pratt, John Schoenmaker, Dale A. Williams
  • Patent number: 4795358
    Abstract: Apparatus and methods for aligning, mating and unmating connectors as a result of relative motion between apparatus operatively associated with the two parts of the connector is disclosed. Specifically, as the apparatus operatively associated with the two parts of the connector move with respect to each other, the parts of the connector move along at least first and second angularly displaced paths to align, mate and unmate the connector as a result of such motion.
    Type: Grant
    Filed: August 7, 1987
    Date of Patent: January 3, 1989
    Assignee: Multi-Shifter, Inc.
    Inventor: John C. Lyles