Dispensing – Axially slidable tubes – sleeves – or apertured caps – Sectional – telescoping
Patent
1988-09-30
1990-08-28
Huppert, Michael S.
Dispensing
Axially slidable tubes, sleeves, or apertured caps
Sectional, telescoping
222529, 29 34B, 29458, 118254, 901 22, 901 43, B05C 700, B21J 1500
Patent
active
049518496
ABSTRACT:
An applicator for applying a fluid substance to a drilled hole as part of an automatic fastening machine. The fastener machine drills the hole in the workpiece, such as an aircraft wing panel, and then the substance applicator applies the substance to the hole, prior to subsequent installation of the fastener within the hole. The substance applicator, which is connected to a movable pressure foot, is pneumatically operated so that a head portion of the applicator is extended laterally over the hole, and a tip assembly in the head is extended vertically downward toward the hole. This operational sequence is accomplished by means of variable rate springs which bias the tip assembly and base to retracted positions. The substance is delivered to the tip assembly from a storage reservoir by means of a peristaltic pump. Positive shutoff of the substance to the tip assembly is achieved by a pivotally mounted shutoff arm assembly. When one end of the shutoff arm is engaged and elevated by the retracted head, the opposite end of the arm is depressed against the compressible tube to pinch off the sealant flow therethrough.
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Shemeta Paul J.
Townsend Harry E.
Zafir Avinoam
Huppert Michael S.
The Boeing Company
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