Patents by Inventor Fred J. Silbernagel

Fred J. Silbernagel 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: 7101075
    Abstract: The present invention is a front discharge transit mixer apparatus. In one form of the present invention the operator has an environment surrounde by a large viewing area so as to increase his ability to control the vehicle. Further, creature comforts include increased head room in the cab, air conditing, heat, and storage compartments. A total weight system is provided for assisting in maintaining the proper weight distribution of the apparatus for passage over roads and bridges.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: September 5, 2006
    Inventor: Fred J. Silbernagel
  • Publication number: 20040036236
    Abstract: The present invention is a front discharge transit mixer apparatus. In one form of the present invention the operator has an environment surrounde by a large viewing area so as to increase his ability to control the vehicle. Further, creature comforts include increased head room in the cab, air conditing, heat, and storage compartments. A total weight system is provided for assisting in maintaining the proper weight distribution of the apparatus for passage over roads and bridges.
    Type: Application
    Filed: February 18, 2003
    Publication date: February 26, 2004
    Inventor: Fred J. Silbernagel
  • Publication number: 20020163142
    Abstract: The present invention is a front discharge transit mixer apparatus. In one form of the present invention the operator has an environment surrounde by a large viewing area so as to increase his ability to control the vehicle. Further, creature comforts include increased head room in the cab, air conditing, heat, and storage compartments. A total weight system is provided for assisting in maintaining the proper weight distribution of the apparatus for passage over roads and bridges.
    Type: Application
    Filed: January 24, 2002
    Publication date: November 7, 2002
    Inventor: Fred J. Silbernagel
  • Patent number: 6152457
    Abstract: A front discharge transit mixer having an air spring associated with each wheel. A load sensing system senses the pressure in each air spring and is analyzed to determine a load at each wheel. The load at each wheel is compared to a predetermined load and the pressure is varied as needed to distribute the load to other wheels.
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: November 28, 2000
    Assignee: Maxim Trucks
    Inventor: Fred J. Silbernagel
  • Patent number: 6123444
    Abstract: A method and system operable with a front discharge transit mixer to facilitate multiple deliveries of concrete materials from a single batch of concrete material. The system includes an interactive weight system which is utilized by the transit mixer operator to quantify the amount of material discharged at each delivery point. The front discharge transit mixer has a plurality of fluid springs in which the pressure is sensed and thereafter interpreted to obtain the initial weight of the truck and concrete material prior to delivery of a first quantity of concrete. After the discharge of the first quantity of concrete, the pressure within the plurality of fluid springs is sensed and thereafter interpreted to determine the quantity of concrete remaining in the front discharge transit mixer. The discharging of concrete can continue with the determination of the quantity of concrete for each discharge.
    Type: Grant
    Filed: January 11, 1999
    Date of Patent: September 26, 2000
    Assignee: Maxim Trucks
    Inventor: Fred J. Silbernagel
  • Patent number: 5954429
    Abstract: The present invention defines a transit mixer for the delivery of materials to a job site. The transit mixer apparatus can accommodate different length mixing drums by moving the position of a rear mixing drum mount relative to the transit mixer's chassis. The positioning of the rear mount and the length of the mixing barrel can be varied to change the weight distribution loading on the chassis of the transit mixer.
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: September 21, 1999
    Inventor: Fred J. Silbernagel
  • Patent number: 5884998
    Abstract: The present invention defines a transit mixer for the delivery of materials to a job site. The transit mixer has a charge hopper for receiving material therein and delivering the material to the mixing drum which forms a portion of the transit mixer. The charge hopper has an inlet that is stationary with respect to the vehicle chassis, and a tongue member that is pivotally coupled to the inlet portion. A powered cylinder is coupled between the inlet portion and the tongue portion for allowing the switching between a material charging state and a discharging state. The inlet portion and the tongue portion are in material communication with one another and upon actuation of the powered cylinder the distal end of the tongue position is moved relative to the inner surface of the mixing drum. Another aspect of the charge hopper is that in the charging mode the tongue extends beyond a pair of flights within the mixing drum.
    Type: Grant
    Filed: October 2, 1996
    Date of Patent: March 23, 1999
    Assignee: Maxim Trucks
    Inventor: Fred J. Silbernagel