Patents Assigned to Lawrence Industries, Inc
  • Patent number: 6402857
    Abstract: The invention provides a solvent mixture including n-propyl bromide, a mixture of low boiling solvents and, preferably, a defluxing and/or ionics removing additive and/or at least one saturated terpene. The invention also provides a method of cleaning an article (e.g., an electrical, plastic, or metal part) in a vapor degreaser using the solvent mixture. The solvent mixture of the invention is non-flammable, non-corrosive, and non-hazardous. In addition, it has a high solvency and a very low ozone depletion potential. Thus, using the solvent mixture of the invention, oil, grease, rosin flux, and other organic material can be readily removed from the article of interest in an environmentally safe manner.
    Type: Grant
    Filed: November 29, 2000
    Date of Patent: June 11, 2002
    Assignee: Lawrence Industries, Inc.
    Inventors: Lawrence A. Clark, James L. Priest
  • Patent number: 6176942
    Abstract: The invention provides a solvent mixture including n-propyl bromide, a mixture of low boiling solvents and, preferably, a defluxing and/or ionics removing additive and/or at least one saturated terpene. The invention also provides a method of cleaning an article (e.g., an electrical, plastic, or metal part) in a vapor degreaser using the solvent mixture. The solvent mixture of the invention is non-flammable, non-corrosive, and non-hazardous. In addition, it has a high solvency and a very low ozone depletion potential. Thus, using the solvent mixture of the invention, oil, grease, rosin flux, and other organic material can be readily removed from the article of interest in an environmentally safe manner.
    Type: Grant
    Filed: August 16, 1999
    Date of Patent: January 23, 2001
    Assignee: Lawrence Industries, Inc
    Inventors: Lawrence A. Clark, James L. Priest
  • Patent number: 5938859
    Abstract: The invention provides a solvent mixture including n-propyl bromide, a mixture of low boiling solvents and, preferably, a defluxing and/or ionics removing additive and/or at least one saturated terpene. The invention also provides a method of cleaning an article (e.g., an electrical, plastic, or metal part) in a vapor degreaser using the solvent mixture. The solvent mixture of the invention is non-flammable, non-corrosive, and non-hazardous. In addition, it has a high solvency and a very low ozone depletion potential. Thus, using the solvent mixture of the invention, oil, grease, rosin flux, and other organic material can be readily removed from the article of interest in an environmentally safe manner.
    Type: Grant
    Filed: November 10, 1997
    Date of Patent: August 17, 1999
    Assignee: Lawrence Industries, Inc.
    Inventors: Lawrence A. Clark, James L. Priest
  • Patent number: 5824162
    Abstract: The present invention provides a solvent mixture comprising n-propyl bromide, a mixture of terpenes and a mixture of low boiling solvents, and a method for cleaning an article (e.g., an electrical, plastic, and metal parts) in a vapor degreaser using the solvent mixture. The solvent mixture of the present invention is non-flammable, non-corrosive and non-hazardous. In addition, it has a high solvency and a very low ozone depleting potential. Thus, using the solvent mixture of the present invention, oil, grease, rosin flux and other organic material can be readily removed from the article of interest in an environmentally safe manner.
    Type: Grant
    Filed: March 28, 1997
    Date of Patent: October 20, 1998
    Assignee: Lawrence Industries, Inc.
    Inventor: Lawrence A. Clark
  • Patent number: 5000391
    Abstract: Granulator having a rotary cutter and bed knife with V-shaped conjugate cutting edges, movable hopper, and sound-absorbing panels.
    Type: Grant
    Filed: July 27, 1983
    Date of Patent: March 19, 1991
    Assignee: Lawrence Industries, Inc.
    Inventor: Gabriel M. Lapointe
  • Patent number: 4735391
    Abstract: A shelf support is presented having a bracket with a base section including an opening for releasably securing a suction member. The suction member is formed from polyvinyl chloride and provides cushioning and gripping for a typical glass shelf.
    Type: Grant
    Filed: November 28, 1986
    Date of Patent: April 5, 1988
    Assignee: Lawrence Industries, Inc.
    Inventor: Barry G. Lawrence