Method and apparatus for applying a precision amount of...

Details Method and apparatus for applying a precision amount of... Method and apparatus for applying a precision amount of...

B - Operations, Transporting

29

C

18/683

B29C 45/14 (2006.01) F16B 33/00 (2006.01)

Patent

CA 1260659

21 METHOD AND APPARATUS FOR APPLYING A PRECISION AMOUNT OF SEALANT TO EXPOSED FASTENERS ABSTRACT A method and apparatus 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.

492782

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