Patents by Inventor Richard W. Hoffmann

Richard W. Hoffmann 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: 6659389
    Abstract: A dual-mode hose roller including a crank and a mounting plate may be used to roll up collapsed hose into either a compact hose roll or an expanded hose coil. The crank and mounting plate are arranged to facilitate transmission of torque from the crank to the desired type of hose winding. When a compact hose roll is desired, torque is transmitted directly to the hose. When an expanded hose coil is desired, torque is transmitted to the hose through the mounting plate and several extension arms. The extension arms are sized so that the hose roller forms an expanded hose coil having a suitable diameter for structural fire hose. The mounting plate is rotatably mounted on a fixed support through a bearing and, optionally, a ratchet mechanism. Using the hose roller, preparation is made for fighting a structural fire arranging a section of collapsed hose into a hose bundle. A section of hose is rolled up into an expanded hose coil and arranged into a number of hose loops to form a hose bundle.
    Type: Grant
    Filed: July 27, 2001
    Date of Patent: December 9, 2003
    Inventors: Richard W. Hoffmann, Richard L. Garner
  • Publication number: 20020179416
    Abstract: An enclosed track conveyor chain assembly and method of construction includes a plurality of guide link assemblies and load link assemblies connected to form a conveyor chain assembly. Each load link assembly includes a pair of side walls and forward and rearward ends defining an opening. A pair of wheel assemblies supports the load link on the horizontal surfaces of the track. A guide link member is inserted into the opening of adjacent load links. Distal ends of the guide links are connected via a fastener to thereby connect adjacent load link members to form the enclosed track chain. Each guide link member includes a plurality of flat areas on the distal ends of the arms to provide a connecting surface. A fastener is inserted through openings in the distal ends to secure the guide link members together. Preferably, the connection between guide link members is pivotal to allow pivoting action of the guide link.
    Type: Application
    Filed: July 29, 2002
    Publication date: December 5, 2002
    Inventors: Frank F. Hoffmann, Arnold R. Hoffmann, Richard W. Hoffmann, William E.F. Thurber, Richard Somerville
  • Patent number: 6450326
    Abstract: An enclosed track conveyor chain assembly and method of construction includes a plurality of guide link assemblies and load link assemblies connected to form a conveyor chain assembly. Each load link assembly includes a pair of side walls and forward and rearward ends defining an opening. A pair of wheel assemblies supports the load link on the horizontal surfaces of the track. A guide link member is inserted into the opening of adjacent load links. Distal ends of the guide links are connected via a fastener to thereby connect adjacent load link members to form the enclosed track chain. Each guide link member includes a plurality of flat areas on the distal ends of the arms to provide a connecting surface. A fastener is inserted through openings in the distal ends to secure the guide link members together. Preferably, the connection between guide link members is pivotal to allow pivoting action of the guide link.
    Type: Grant
    Filed: March 28, 2001
    Date of Patent: September 17, 2002
    Inventors: Frank F. Hoffmann, Arnold R. Hoffmann, Richard W. Hoffmann, William E. F. Thurber, Jr., Richard Somerville
  • Publication number: 20020023823
    Abstract: An enclosed track conveyor chain assembly and method of construction includes a plurality of guide link assemblies and load link assemblies connected to form a conveyor chain assembly. Each load link assembly includes a pair of side walls and forward and rearward ends defining an opening. A pair of wheel assemblies supports the load link on the horizontal surfaces of the track. A guide link member is inserted into the opening of adjacent load links. Distal ends of the guide links are connected via a fastener to thereby connect adjacent load link members to form the enclosed track chain. Each guide link member includes a plurality of flat areas on the distal ends of the arms to provide a connecting surface. A fastener is inserted through openings in the distal ends to secure the guide link members together. Preferably, the connection between guide link members is pivotal to allow pivoting action of the guide link.
    Type: Application
    Filed: March 28, 2001
    Publication date: February 28, 2002
    Inventors: Frank F. Hoffmann, Arnold R. Hoffmann, Richard W. Hoffmann, William E. F. Thurber, Richard Somerville
  • Patent number: 6267319
    Abstract: A dual-mode hose roller including a crank and a mounting plate may be used to roll up collapsed hose into either a compact hose roll or an expanded hose coil. The crank and mounting plate are arranged to facilitate transmission of torque from the crank to the desired type of hose winding. When a compact hose roll is desired, torque is transmitted directly to the hose. When an expanded hose coil is desired, torque is transmitted to the hose through the mounting plate and several extension arms. The extension arms are sized so that the hose roller forms an expanded hose coil having a suitable diameter for structural fire hose. The mounting plate is rotatably mounted on a fixed support through a bearing and, optionally, a ratchet mechanism. Using the hose roller, preparation is made for fighting a structural fire arranging a section of collapsed hose into a hose bundle. A section of hose is rolled up into an expanded hose coil and arranged into a number of hose loops to form a hose bundle.
    Type: Grant
    Filed: October 23, 1998
    Date of Patent: July 31, 2001
    Inventors: Richard W. Hoffmann, Richard L. Garner
  • Patent number: 5285917
    Abstract: A child-resistant container closure constructed according to the present invention comprises a disk shaped cover plate attached to body section formed as a substantially cylindrical wall. A movable handle or tab is attached to the cover plate to aid a user in pulling the closure from a container in which the closure is installed. A well or recess is provided in cover plate to house the handle in a closed position. A ridge on the end of the handle cooperates with a mating ridge in the wall of the recess to retain the handle in a closed position. A resilient spring is provided in the recess so that when the handle is released from the recess, it is urged into a position in which it may be conveniently gripped by a user. An undercut groove or notch is provided on the outside surface of the cylindrical wall adjacent the cover plate. The notch engages a mating lip or ridge extending inward from the inner surface of the mouth of the product container to secure the closure to the product container.
    Type: Grant
    Filed: March 11, 1992
    Date of Patent: February 15, 1994
    Assignee: Magenta Corporation
    Inventor: Richard W. Hoffmann