DAVID A SUDRABIN
Engineering in Hendersonville, NC

5518922, May 21, 1996

Apr 10, 1995

8/419524

David A. Sudrabin - Hendersonville NC

C05F 1700

4352901

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. Secondly acceleration of the composting process must be provide in the form of uniform control of the environment over the entire base of the composting heap.

4885880, Dec 12, 1989

Sep 8, 1987

7/095011

David A. Sudrabin - Hendersonville NC
Klaus Grunau - Hendersonville NC

Fibrestone Inc. - Ft. Myers FL

G01M 304, B65D 2518

521696

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. We have devised a system that overcomes these difficulties by wrapping the tank, whether made of metal or fiberglass, with a heavy blanket of a thin, relatively stiff, loosely woven material such as nylon or polypropylene which is impervious to petroleum products.

5707416, Jan 13, 1998

May 21, 1996

8/651972

David A. Sudrabin - Hendersonville NC

C05F 904, C05F 1700

71 9

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.