Patent ID: 6500366
Filing Date: 2002-12-31
Classification: B29C,B29L,B32B

Abstract:
A multiple injection head for injection of resins having different viscosities into a chip/crack on an automotive windshield comprising:a plunger housing having a top side portion, a bottom side portion, and two cylindrical openings each extending from the top side portion through to the bottom side portion thereof, said openings each having an upper internally threaded portion and a lower chamber portion; two generally cylindrical plungers each having an upper portion adapted to be hand turned, an intermediate portion matingly threaded with respect to the housing, and a lower portion; so that when the resins having different viscosities respectively fill the chamber portions, the plungers can be turned into the threaded portions of the openings controllably and selectively forcing the resins through the openings out of the bottom side portion of the housing into a chip/crack therebelow on the windshield; so as the head is dragged along the chip/crack first one viscosity resin is injected, and then the other different viscosity resin is immediately injected into the chip/crack.