Method for applying a precision amount of sealant to exposed fas

Details Method for applying a precision amount of sealant to exposed fas Method for applying a precision amount of sealant to exposed fas

1986-06-30

1990-11-20

Lorin, Hubert C.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

To produce composite, plural part or multilayered article

264268, 264276, 2642711, 264277, B29C 0000

Patent

active

049717456

ABSTRACT:
A method for applying a uniform sealant coating over the portion of a fastener exposed above a panel includes applying a sealant retaining shell over the exposed portion of the fastener to define a closed volume between the shell, fastener and panel. The shell has an aperture, removed from the mouth of the shell, for receiving sealant therethrough. An injection nozzle receiving structure for receiving a sealant injector nozzle therein is provided adjacent and substantially aligned with the aperture. Sealant is injected into the shell through the injection nozzle receiving structure and through the aperture therein to fill the area between the fastener and the shell. A pressure is selected for injecting the sealant such that injection is stopped when the shell is filled. The sealant is allowed to cure and the retaining shell is removed.

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