Patents Assigned to Polygon, Inc.
  • Fire emergency, sprinkling control system and method thereof
    Patent number: 5236049
    Abstract: There is described an electronic fire reporting and sprinkling control module to be connected to a control bus of a fire alarm system, and to a flow control valve which controls flow of extinguishing fluid into a sprinkler system. The sprinkler system can be monitored by pressurized air.
    Type: Grant
    Filed: December 24, 1991
    Date of Patent: August 17, 1993
    Assignee: Securite Polygon Inc.
    Inventors: Jean-Pierre Asselin, Sylvain Coupal, Claude Labonte, Andre LaPlante, Yves Lauzier
  • Socket head tool
    Patent number: 4084454
    Abstract: This invention relates to a new tool for loosening screw parts or like devices which are frozen in screw threaded connection in a metal work part, for example. The new tool includes hollow, cup-shaped socket including a thick solid upper end head portion and an integral hollow skirt portion for fitting over an exposed head of a frozen screw device, a short axial extent of the exposed head of the device being interlocked with the skirt when an inner rim portion on the skirt is in locked engagement with the work-part.
    Type: Grant
    Filed: January 8, 1976
    Date of Patent: April 18, 1978
    Assignee: Polygon, Inc.
    Inventor: Leon E. Day