Windshield repair device

Details Windshield repair device Windshield repair device

1987-11-16

1988-10-04

Dawson, Robert A.

Plastic article or earthenware shaping or treating: apparatus

Product or preform repair or restoring means

Hand manipulable tool

156 94, 264 36, 425 13, B32B 3500

Patent

active

047753056

ABSTRACT:
A device for repairing windshield cracks. A cylinder includes a sealing mouth adapted to contain a quantity of filler material. The mouth with filler material therein is positioned over the crack opening. The cylinder includes a small cavity adjacent the mouth and a larger upper cavity. A plunger fitted to the cylinder carries a lower seal for the small cavity and an upper seal for the larger cavity. Moving the plunger from an initial fully depressed to a fully retracted position opens the small cavity to the upper cavity whereby the vacuum of the upper cavity enhances the evacuation of air from the crack. Subsequent depression of the plunger is assisted by a one-way exhaust valve. Such depression of the plunger produces injection of the filler material into the crack replacing the evacuated air.

REFERENCES:
patent: 4200478 (1980-04-01), Jacino et al.
patent: 4385015 (1983-05-01), Klettke
patent: 4555295 (1985-11-01), Orikasa et al.
patent: 4569808 (1986-02-01), Smali

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