Plastic article or earthenware shaping or treating: apparatus – Product or preform repair or restoring means – Hand manipulable tool
Patent
1989-09-15
1990-12-04
Housel, James C.
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
049750372
ABSTRACT:
A device for injecting a liquid repair material into a crack in glass such as a windshield has a central body portion including a rigid frame that is supported by three legs in a triangular configuration. A suction cup with a single adjustment knob holds the device against the windshield. One of the legs is an injector assembly comprising a cylinder and pressure screw assembly. Vacuum is applied to the cylinder by a nipple through the cylinder sidewall. An O-ring at the bottom of the cylinder sidewall seals between the bottom of the cylinder sidewall and the windshield. The pressure screw assembly includes a piston slidable within the internal passage. The lower end of the piston includes a seal for sealing engagement with the sidewall. In the preferred embodiment the piston seal is a sealing cap completely covering the bottom end of the piston and completely blocking the passage and sealing against said sidewall. External threads on the upper end of the cylinder sidewall engage internal threads on a grip cap attached to the upper end of the piston for retaining the piston seal at a position within the internal passage above the vacuum attachment during application of a vacuum (degasing) and for inserting the piston further into the internal passageway than the vacuum connection for pressurizing the passage.
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Housel James C.
Tervo Calif K.
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