Patents Assigned to RMT, Inc.
  • Patent number: 5826321
    Abstract: Improvements in coil placing tooling of the type employed to insert prewound coils in the slots of dynamoelectric machine stator cores which tooling has an annular collet for maintaining wedge guides axially and radially in position, and the wedge guides in turn maintain blades radially in position are disclosed. The blades are readily removable and replaceable by releasing the collet for limited displacement relative to the blades, moving the collet to a position where selected wedge guides are freed axially and radially, removing certain of the selected wedge guides, and subsequently removing certain of the blades associated with the removed wedge guides. Improvements in reversible blades for such coil placing tooling are also disclosed. Certain ones of the blades comprise an elongated blade of generally uniform cross-sectional configuration with a transverse support dowel receiving hole near each end.
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: October 27, 1998
    Assignee: RMT, Inc.
    Inventor: Timothy K. Pease
  • Patent number: 5827574
    Abstract: The present invention involves a method of removing paint containing heavy metal from a surface without the production of hazardous wastes. Specifically, this method involves applying a coating preparation to the heavy metal containing paint prior to its removal from its surface. The preparation contains lead reactive chemicals such as phosphates, metal sulfides and organic sulfides. The preparation may also contain buffers such as magnesium oxide and magnesium hydroxide. These chemicals react with the heavy metals rendering them nonhazardous. The invention also involves the coating preparation itself.
    Type: Grant
    Filed: June 9, 1997
    Date of Patent: October 27, 1998
    Assignee: RMT, Inc.
    Inventors: Robert R. Stanforth, Paul V. Knopp
  • Patent number: 5637355
    Abstract: The present invention involves a method of removing paint containing heavy metal from a surface without the production of hazardous wastes. Specifically, this method involves applying a coating preparation to the heavy metal containing paint prior to its removal from its surface. The preparation contains lead reactive chemicals such as phosphates, metal sulfides and organic sulfides. The preparation may also contain buffers such as magnesium oxide and magnesium hydroxide. These chemicals react with the heavy metals rendering them nonhazardous. The invention also involves the coating preparation itself.
    Type: Grant
    Filed: April 22, 1996
    Date of Patent: June 10, 1997
    Assignee: RMT, Inc.
    Inventors: Robert R. Stanforth, Paul V. Knopp
  • Patent number: 5537730
    Abstract: Improvements in coil placing tooling of the type employed to insert prewound coils in the slots of dynamoelectric machine stator cores. Certain ones of the blades comprise an elongated blade of generally uniform cross-sectional configuration which includes a convex portion having a series of: generally parallel grooves cut therein to define intervening coil contacting lands. As compared to conventional "smooth" blades, these blades have only a portion of the area of contact with the coils and, therefor, only a fraction of the frictional resistance to coil insertion.
    Type: Grant
    Filed: June 17, 1994
    Date of Patent: July 23, 1996
    Assignee: RMT, Inc.
    Inventor: Timothy K. Pease
  • Patent number: 5202033
    Abstract: A method of treating solid waste in soil or solid disposed waste containing unacceptable levels of leachable metals, such as lead, cadmium, arsenic, zinc, copper and chromium, includes mixing the solid waste or soil in place with a phosphate source or a carbonate source or ferrous sulfate. After the solid waste and the additive are mixed, if needed an additional pH controlling agent is mixed into the soil or waste and additive. After the solid waste and additive and pH controlling agent are mixed under conditions which support reaction between the additive, pH controlling agent and metals, the metals will be converted to non-leachable forms which are relatively stable under normal environmental conditions.
    Type: Grant
    Filed: September 30, 1991
    Date of Patent: April 13, 1993
    Assignee: RMT, Inc.
    Inventors: Robert R. Stanforth, Ajit K. Chowdhury
  • Patent number: 5037479
    Abstract: A method of treating solid hazardous wastes containing unacceptable levels of leachable metals such as lead, cadmium and zinc includes mixing the solid waste with a buffering agent selected from the group consisting of magnesium oxide, magnesium hydroxide, reactive calcium carbonates and reactive magnesium carbonates, and with an additional agent which is an acid or salt containing an anion that forms substantially nonleachable forms of the metals, which additional agent is selected from the group consisting of triple superphosphate, ammonium phosphate, diammonium phosphate, phosphoric acid, boric acid and metallic iron so that under both acidic and nonacidic leaching conditions the metals in the mixture will be converted to substantially nonleachable forms.
    Type: Grant
    Filed: April 20, 1990
    Date of Patent: August 6, 1991
    Assignee: RMT, Inc.
    Inventor: Robert R. Stanforth
  • Patent number: 4889640
    Abstract: A method of treating solid hazardous waste containing unacceptable levels of leachable metals such as lead and cadmium includes mixing the solid waste with an agent selected from the group consisting of reactive calcium carbonate, reactive magnesium carbonate and reactive calcium magnesium carbonate. After the solid waste and agent are mixed under conditions which support reaction between the agent and metals, the metals will be converted to nonleachable forms which are relatively stable under normal environmental conditions. If the solid waste material and agent are both dry when mixed, it may be beneficial to add water to facilitate the mixing of the solid waste and agent and the conversion of the metals into nonleachable forms.
    Type: Grant
    Filed: June 10, 1988
    Date of Patent: December 26, 1989
    Assignee: RMT, Inc.
    Inventor: Robert R. Stanforth