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).
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Publication number: 20150203140Abstract: 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: ApplicationFiled: October 1, 2014Publication date: July 23, 2015Inventors: Paul D. Holtan, Andrew L. Dvorak
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Patent number: 8870211Abstract: 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: GrantFiled: December 21, 2012Date of Patent: October 28, 2014Assignee: Dane Technologies, Inc.Inventors: Paul D Holtan, Andrew L Dvorak
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Patent number: 7857342Abstract: 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: GrantFiled: June 6, 2006Date of Patent: December 28, 2010Assignee: Dane Technologies, Inc.Inventors: Paul D. Holtan, James W. Wiff
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Publication number: 20090267322Abstract: 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: ApplicationFiled: April 9, 2009Publication date: October 29, 2009Inventors: Paul D. Holtan, Andrew L. Dvorak
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Patent number: 7571914Abstract: 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: GrantFiled: February 17, 2006Date of Patent: August 11, 2009Assignee: Dane Industries, Inc.Inventors: Paul D. Holtan, Daniel T. Johnson, James W. Wiff
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Patent number: 7549651Abstract: 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: GrantFiled: April 4, 2007Date of Patent: June 23, 2009Assignee: Dane Industries, Inc.Inventors: Paul D. Holtan, Daniel T. Johnson
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Patent number: 7493979Abstract: 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: GrantFiled: May 22, 2008Date of Patent: February 24, 2009Assignee: Dane Industries, Inc.Inventors: Daniel T. Johnson, Paul D. Holtan, James W. Wiff
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Publication number: 20080257618Abstract: 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: ApplicationFiled: May 22, 2008Publication date: October 23, 2008Inventors: Daniel T. Johnson, Paul D. Holtan, James W. Wiff
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Patent number: 7389836Abstract: 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: GrantFiled: September 23, 2004Date of Patent: June 24, 2008Assignee: Dane Industries, Inc.Inventors: Daniel T. Johnson, Paul D. Holtan, James W. Wiff
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Patent number: 6880652Abstract: 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: GrantFiled: June 9, 2003Date of Patent: April 19, 2005Assignee: Dane Industries, Inc.Inventors: Paul D. Holtan, Daniel T. Johnson
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Publication number: 20040256166Abstract: 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: ApplicationFiled: April 30, 2004Publication date: December 23, 2004Inventors: Paul D. Holtan, Daniel T. Johnson
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Publication number: 20040245030Abstract: 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: ApplicationFiled: June 9, 2003Publication date: December 9, 2004Applicant: Dane Industries, Inc.Inventors: Paul D. Holtan, Daniel T. Johnson