Patents by Inventor Zygmunt J. Przewalski

Zygmunt J. Przewalski 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: 4889484
    Abstract: In a thermal reductor unit for decontaminating soil of combustible and volatile fluids, as interior drum is mounted concentrically within a shell in surrounding relation to an ignition chamber. An annular space between the drum and shell provides a compartment wherein soil being processed is received to serve as an insulating medium for the ignition chamber.
    Type: Grant
    Filed: December 28, 1987
    Date of Patent: December 26, 1989
    Assignee: M & S Engineering & Manufacturing Co., Inc.
    Inventor: Zygmunt J. Przewalski
  • Patent number: 4776788
    Abstract: A kiln is disclosed which includes an elongated housing formed by a plurality of interconnected longitudinally extending sections each forming an independent housing module. Each housing module has support means for rotatably supporting that housing module independently of any other module and power means for moving the support means of each housing module into contact engagement therewith for compensating for load variations applied to the support means and uniformly distributing the loading forces imposed thereon by the housing modules and their respective contents.
    Type: Grant
    Filed: June 22, 1987
    Date of Patent: October 11, 1988
    Assignee: M & S Engineering & Manufacturing Co., Inc.
    Inventor: Zygmunt J. Przewalski
  • Patent number: 4763583
    Abstract: An apparatus for combusting wet waste or the like comprising ignition means including an ignition chamber having an inlet passageway extending therefrom for introducing the waste, an ignition burner for heating the waste to form non-combustible solids and at least partially combustible flue gases, a first outlet for the flue gases in the wall of the inlet passageway, and a second outlet for the solids; combustion means for substantially combusting the flue gases including a combustion passageway wrapped around the inlet passageway from the ignition chamber first outlet to a combustion chamber, and a combustion burner in the combustion passageway adjacent to the first outlet for aspirating and heating the flue gases; heat recuperating means for transferring heat from the substantially combusted flue gases to preheat an oxygen-containing gas; and passageway means for transferring the pre-heated oxygen-containing gas from the recuperator to the ignition burner and the combustion burner.
    Type: Grant
    Filed: January 9, 1987
    Date of Patent: August 16, 1988
    Assignee: M & S Engineering & Manufacturing Co., Inc.
    Inventor: Zygmunt J. Przewalski
  • Patent number: 4700638
    Abstract: A method and apparatus for detoxifying soil particles containing low melting point mineral compounds contaminated with combustible toxic materials wherein the soil particles are located without melting the low melting point mineral compounds to form combusted solids and a mixture of mineral dust and toxic material containing gas, the combusted solids are separated from the dust-gas mixture, the dust gas mixture is thereafter separated into the mineral dust and the toxic material-containing gas, and the toxic material-containing gas is then combusted at high temperature to form less harmful combustion products. The low melting point mineral compounds may be those mineral compounds of oxygen, silicon, calcium, iron and aluminum, and certain metal and metal oxides. The combustible toxic materials may be dioxin and PCB.
    Type: Grant
    Filed: August 11, 1986
    Date of Patent: October 20, 1987
    Assignee: M & S Engineering and Manufacturing Co., Inc.
    Inventor: Zygmunt J. Przewalski
  • Patent number: 4542703
    Abstract: An incineration unit is provided with an open ended rotary incineration chamber having a main portion and a neck portion supported between two opposite stationary end chambers. Feed means are mounted adjacent first stationary end chamber and a burner for directing flame into the incineration chamber is mounted on the second stationary end chamber. A secondary combustion chamber extends axially above the incineration chamber and includes an afterburner for completely incinerating the combustion gases and by-products. A conduit is formed in first stationary end chamber for transferring hot incineration gases to the secondary combustion chamber. The burner directs the flow of hot incineration gases towards the raw waste material thereby to initiate drying thereof. A grate cleaning member is also provided at the discharge end of the chamber to assist in the separation of waste material.
    Type: Grant
    Filed: October 19, 1984
    Date of Patent: September 24, 1985
    Assignee: MSP, Inc.
    Inventor: Zygmunt J. Przewalski
  • Patent number: 4245571
    Abstract: A thermal reductor system is provided with a rotary ignition chamber having an input end, a discharge end of enlarged size relative to the input end and an inside chamber wall having a configuration for promoting natural flow of gases, smoke and ash discharge from the input end to the discharge end. To limit discharge of solid residue to a maximum predetermined size, the discharge end of the chamber is provided with a restricted ash exit. So that the ignition chamber is particularly suited for disposing of liquid wastes in a compact chamber construction, the inside chamber wall has a restriction intermediate the input and discharge ends of the chamber defining a barrier to liquid flow. An exhaust duct is provided for the passage of gases and smoke from the ignition chamber.
    Type: Grant
    Filed: April 5, 1978
    Date of Patent: January 20, 1981
    Assignee: T R Systems, Inc.
    Inventor: Zygmunt J. Przewalski
  • Patent number: 3994705
    Abstract: The invention relates to an apparatus for agglomerating and precipitating suspended matter out of a gas using centrifugal acceleration within a treatment chamber distinguished by an inner cylindrical inlet tube through which the contaminated gas is led in a downward path and an outer circumscribing barrel through which the cleansed gas is led in a spiralling upward path. The inlet tube and barrel are mounted over and relative to a lower water filled reservoir or contaminant collection chamber. The gas exits from the inlet tube through an accelerator in the form of an adjustable venturi throat defined by a shroud arrangement vertically aligned with and spaced from the inlet tube and by which the downward flow direction of the gas is reversed as the gas aspirates water and passes upwardly through and out of the venturi throat and into the passageway defined by the inner inlet tube and the outer barrel.
    Type: Grant
    Filed: May 27, 1975
    Date of Patent: November 30, 1976
    Inventor: Zygmunt J. Przewalski