| 摘要 |
A sealant applicator assembly (20) for mounting to an automatic drilling and fastener installation machine to apply sealant to the tip or shank surfaces of varying grip-length fasteners (24,53) before "wet" installation of the fastener into a hole. The assembly includes a pair of valve members (32,35) controlling the flow of sealant into contact with the fastener shank: one valve member (32) being opened or actuated by physical engagement between the valve member and the fastener tip when the shank length of the fastener being installed is sufficient to engage the valve member; and a second valve member (35) being opened or actuated by engagement of means (52) on the fastener installation machine when the shank length of the fastener being installed is insufficient to permit physical engagement between the fastener tip and the first valve member.
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