Patents by Inventor David A. Sudrabin

David A. Sudrabin 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: 5707416
    Abstract: The disclosure explains various methods of recovering byproduct heat from a compost stack while the compost stack is in a bacteria active stage. Several beneficial uses of the recovered heat are explained with specific examples given. Usage of the recovered heat to accelerate a bacteria active stage in a second compost stack provides for uniform degradation of the compostable material contained within the second compost stack. This results from reduction of areas within the compost stack which are at differing periods within the composting cycle. Alternatively, usage of the recovered heat to heat a building is explained. Various shapes of aeration plates are explained with examples given.
    Type: Grant
    Filed: May 21, 1996
    Date of Patent: January 13, 1998
    Inventor: David A. Sudrabin
  • Patent number: 5518922
    Abstract: The process of using a single layer of aeration support blocks to form a composting field having an inclusive air chamber beneath the blocks to maintain the heaps environment for the accelerated composting of vegetation, municipal solid waste, municipal sludge or other compostable material. Further the unique placement, on the individual blocks, of the support footers and the penetrating air nozzles to increase the structural strength of the individual blocks and therefore the entire field. Composting of vegetation, municipal solid waste and municipal sludge is required to reduce the volume of waste deposited into landfills. To provide for a cost efficient method of allowing for the large scale composting operations the following criteria must be met. First the operation must be reusable, through many composting cycles, without requiring replacement of material such as current use piping.
    Type: Grant
    Filed: April 10, 1995
    Date of Patent: May 21, 1996
    Inventor: David A. Sudrabin
  • Patent number: 4885880
    Abstract: Large capacity truck tankers periodically replenish the petroleum and other products in the underground storage tanks. These underground storage tanks corrode, and develop leaks releasing their petroleum products into the ground. As a result potable water supplies are contaminated, and the petroleum products remain in the ground for long periods of time. Fiberglass plastic tanks were developed to replace the metal tanks which corroded. If a sharp object such as a stone contacted the fiberglass tank, the recurring filling of the tank caused a slight degree of movement or working of the tank which in time resulted in the tank leaking. To overcome this problem, it has been determined that a containment vessel or barrier should surround the primary tank and that the space between the tank and the barrier should be inspected periodically to determine if leakage has occurred. If leakage occurs the tank and the barrier must be removed and replaced.
    Type: Grant
    Filed: September 8, 1987
    Date of Patent: December 12, 1989
    Assignee: Fibrestone Inc.
    Inventors: David A. Sudrabin, Klaus Grunau
  • Patent number: 4743414
    Abstract: An assembly line method of construction is applied to the making of the thin fiber reinforced shell that forms the external surface of the Fibrestone wall. An elongated endless movable belt has the desired recurring pattern to be applied as the external surface of the fiber reinforced shell. Spray guns movable transversely of the elongated belt are provided to spray concrete and chopped up reinforcing fibers on the belt to form a continuous Fibrestone panel strip as the belt moves past the spray guns. A plurality of elongated flex-ties mounted on suitable supports and each having one of their ends adapted to be secured to the upper surface of the fiber reinforced shell are dropped onto the spray formed shell while it is in the plastic or uncured state. To insure that the flex-ties are securely bonded additional concrete and chopped up fibers are sprayed on the flex-tie supports, and the area between the rows of flex-ties are rolled to provide a relatively smooth surface between the rows of flex-ties.
    Type: Grant
    Filed: May 21, 1986
    Date of Patent: May 10, 1988
    Assignee: Fibrestone Inc.
    Inventor: David A. Sudrabin
  • Patent number: 4619032
    Abstract: In the Fibrestone Building Construction a thin fiber reinforced wall formed of sprayed concrete and short lengths of fibers, such as glass fibers, forms the outer shell of the wall exposed to atmosphere. An inner load supporting structure is secured to the inner surface of the outer shell. This load supporting structure consists for example of a metal frame aligned with the inner surface of the shell, and spaced metal studs. A differential of temperature exists between the outer surface of the fiber reinforced shell subjected to atmospheric temperatures and the inner load supporting structure because the inner members are shielded from atmospheric temperatures by the outer shell. The outer and inner members of the wall being formed of different materials have different coefficients of expansion when subjected to varying temperatures.
    Type: Grant
    Filed: July 24, 1985
    Date of Patent: October 28, 1986
    Assignee: Fibrestone Incorporated
    Inventor: David A. Sudrabin
  • Patent number: 4554124
    Abstract: In the Fibrestone Building Construction the outer or exterior shell or panel is formed of a plastic material such as concrete reinforced by a high concentration of fibers, such as glass or other fibrous material randomly disbursed in the mass of the moldable material such as concrete. If desired the fibers can be chopped up to accelerate their bonding in the mass of the moldable material. This moldable material and the fibrous reinforcement may be sprayed under pressure into a mold having a surface which it is desired to reproduce. The surface of the mold is reproduced faithfully, and a relatively thin but strong outer shell embodying the desired contour is thus formed. This outer shell or wall is assembled in a horizontal position, with its outer face down, with a frame of substantially uniform thickness throughout. All necessary insulation, wall reinforcements, appliance fittings, door and window cutouts and spaces for wall connectors and utility outlets are installed within the thickness of the framework.
    Type: Grant
    Filed: June 22, 1983
    Date of Patent: November 19, 1985
    Assignee: Fibrestone Incorporated
    Inventor: David A. Sudrabin