Patents by Inventor Paul D. Holtan

Paul D. Holtan 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).

  • Publication number: 20150203140
    Abstract: A cart transporting apparatus including a hitch assembly and a cart coupling assembly. The hitch assembly may include an elongated body, at least one catch member, and a hitch stop. The hitch stop may be, for example, a rotating hitch stop or a sliding hitch stop. The rotating hitch stop may include at least three flanges configured to abut a cart and may further include a detent mechanism. The cart coupling assembly may include at least a first portion and a second portion. The first portion may be pivotally coupled to the second portion. The first portion may include first and second engagement members. The second portion may include third and fourth engagement members.
    Type: Application
    Filed: October 1, 2014
    Publication date: July 23, 2015
    Inventors: Paul D. Holtan, Andrew L. Dvorak
  • Patent number: 8870211
    Abstract: A cart transporting apparatus including a hitch assembly and a cart coupling assembly. The hitch assembly may include an elongated body, at least one catch member, and a hitch stop. The hitch stop may be, for example, a rotating hitch stop or a sliding hitch stop. The rotating hitch stop may include at least three flanges configured to abut a cart and may further include a detent mechanism. The cart coupling assembly may include at least a first portion and a second portion. The first portion may be pivotally coupled to the second portion. The first portion may include first and second engagement members. The second portion may include third and fourth engagement members.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: October 28, 2014
    Assignee: Dane Technologies, Inc.
    Inventors: Paul D Holtan, Andrew L Dvorak
  • Patent number: 7857342
    Abstract: The present invention is a hitch assembly for coupling a powered cart mover to a cart, wherein the cart has one of three different types of hitching elements. The hitch assembly comprises a mount and a foot. The mount secures the assembly to the mover and includes a vertically adjustable portion biased in an upward position via a biasing element. The foot is pivotally coupled to the vertically adjustable portion and includes first, second and third attachment features. Each attachment feature is configured to receive one of the three different types of hitching elements.
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: December 28, 2010
    Assignee: Dane Technologies, Inc.
    Inventors: Paul D. Holtan, James W. Wiff
  • Publication number: 20090267322
    Abstract: A cart transporting apparatus including a hitch assembly and a cart coupling assembly. The hitch assembly may include an elongated body, at least one catch member, and a hitch stop. The hitch stop may be, for example, a rotating hitch stop or a sliding hitch stop. The rotating hitch stop may include at least three flanges configured to abut a cart and may further include a detent mechanism. The cart coupling assembly may include at least a first portion and a second portion. The first portion may be pivotally coupled to the second portion. The first portion may include first and second engagement members. The second portion may include third and fourth engagement members.
    Type: Application
    Filed: April 9, 2009
    Publication date: October 29, 2009
    Inventors: Paul D. Holtan, Andrew L. Dvorak
  • Patent number: 7571914
    Abstract: The present invention is a shopping cart collection device adapted to engage to first and second shopping carts and capable of pulling a first train of shopping carts extending from the first shopping cart and pushing a second train of shopping carts extending from the second shopping cart. The device comprises a motorized unit comprising a drive wheel, a first hitch and a second hitch. The first hitch is proximate a first side of the motorized unit and is adapted to engage the first shopping cart. The second hitch is proximate a second side of the motorized unit opposite the first side and is adapted to engage the second shopping cart.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: August 11, 2009
    Assignee: Dane Industries, Inc.
    Inventors: Paul D. Holtan, Daniel T. Johnson, James W. Wiff
  • Patent number: 7549651
    Abstract: The present invention is an improved cart coupler assembly for use on a shopping cart retriever vehicle. The cart coupler assembly provides a means for connecting shopping carts to the cart retriever vehicle. The cart coupler assembly may employ an actuator to move yokes into position to enable the yokes to engage shopping cart members. The cart coupler assembly may employ the upwardly facing concave surfaces of U-shaped yokes to engage the rear wheels of a shopping cart. In the place of yokes, the cart coupler assembly may utilize a shopping cart emulator that emulates one or more portions or features of a shopping cart in order to facilitate the engagement of the coupler assembly to a shopping cart.
    Type: Grant
    Filed: April 4, 2007
    Date of Patent: June 23, 2009
    Assignee: Dane Industries, Inc.
    Inventors: Paul D. Holtan, Daniel T. Johnson
  • Patent number: 7493979
    Abstract: The present invention is a motorized shopping cart retriever that includes a controller that attenuates the power provided to the drive system of the retriever to prevent the retriever from being utilized to move an excessively heavy load of shopping carts. By preventing the retriever and carts from being subjected to overloaded conditions, the operational lives of the retriever and carts are maximized. The retriever is also provided with a burst mode that allows the power provided to the drive system to rapidly increase past the normal attenuated level for a brief period of time in order to reduce the time required to accelerate a retriever loaded with carts to a terminal velocity.
    Type: Grant
    Filed: May 22, 2008
    Date of Patent: February 24, 2009
    Assignee: Dane Industries, Inc.
    Inventors: Daniel T. Johnson, Paul D. Holtan, James W. Wiff
  • Publication number: 20080257618
    Abstract: The present invention is a motorized shopping cart retriever that includes a controller that attenuates the power provided to the drive system of the retriever to prevent the retriever from being utilized to move an excessively heavy load of shopping carts. By preventing the retriever and carts from being subjected to overloaded conditions, the operational lives of the retriever and carts are maximized. The retriever is also provided with a burst mode that allows the power provided to the drive system to rapidly increase past the normal attenuated level for a brief period of time in order to reduce the time required to accelerate a retriever loaded with carts to a terminal velocity.
    Type: Application
    Filed: May 22, 2008
    Publication date: October 23, 2008
    Inventors: Daniel T. Johnson, Paul D. Holtan, James W. Wiff
  • Patent number: 7389836
    Abstract: The present invention is a motorized shopping cart retriever that includes a controller that attenuates the power provided to the drive system of the retriever to prevent the retriever from being utilized to move an excessively heavy load of shopping carts. By preventing the retriever and carts from being subjected to overloaded conditions, the operational lives of the retriever and carts are maximized. The retriever is also provided with a burst mode that allows the power provided to the drive system to rapidly increase past the normal attenuated level for a brief period of time in order to reduce the time required to accelerate a retriever loaded with carts to a terminal velocity.
    Type: Grant
    Filed: September 23, 2004
    Date of Patent: June 24, 2008
    Assignee: Dane Industries, Inc.
    Inventors: Daniel T. Johnson, Paul D. Holtan, James W. Wiff
  • Patent number: 6880652
    Abstract: A cart pulling vehicle for use in parking lots made up of a hand operated motor-driven base which pulls shopping carts. The device utilizes a cable that is retractably mounted on the base and stretches to surround the line of carts pulled. This cable is retracted by a pair of cable drums at its ends which are driven by torsion springs. These separate dual torsion springs place torque on the cable drums which, in turn, exert tension on each half of the cable. When the cart pulling vehicle is in motion, a lock arrangement prevents additional cable from unreeling which the tension on each side cable pulling the carts in a train-like fashion. When the vehicle is stopped, a lock is released and the cable is able to extend to surround additional carts.
    Type: Grant
    Filed: June 9, 2003
    Date of Patent: April 19, 2005
    Assignee: Dane Industries, Inc.
    Inventors: Paul D. Holtan, Daniel T. Johnson
  • Publication number: 20040256166
    Abstract: The present invention, in one embodiment, is a device for moving a heavy cart, such as a bossie cart used to transport one-gallon jugs of milk in a bulk-milk facility. The device includes a body that has an operator platform, a steerable drive wheel and a plurality of castors that support the body, a steering tiller that is interconnected to the steerable drive wheel, and a hitch that is attached to the body and includes a fixed jaw and a movable jaw interconnected by a center structure. The jaws are adapted to engage opposite sides of the cart as the device is used to move the cart.
    Type: Application
    Filed: April 30, 2004
    Publication date: December 23, 2004
    Inventors: Paul D. Holtan, Daniel T. Johnson
  • Publication number: 20040245030
    Abstract: A cart pulling vehicle for use in parking lots made up of a hand operated motor-driven base which pulls shopping carts. The device utilizes a cable that is retractably mounted on the base and stretches to surround the line of carts pulled. This cable is retracted by a pair of cable drums at its ends which are driven by torsion springs. These separate dual torsion springs place torque on the cable drums which, in turn, exert tension on each half of the cable. When the cart pulling vehicle is in motion, a lock arrangement prevents additional cable from unreeling which the tension on each side cable pulling the carts in a train-like fashion. When the vehicle is stopped, a lock is released and the cable is able to extend to surround additional carts.
    Type: Application
    Filed: June 9, 2003
    Publication date: December 9, 2004
    Applicant: Dane Industries, Inc.
    Inventors: Paul D. Holtan, Daniel T. Johnson