| 摘要 |
An installation tool installs multi-pieced fasteners having fastener components including a pin and a collar and/or sleeve by applying a relative axial force therebetween by a nose assembly which has a jaw structure for gripping the pin and an anvil for engaging the collar or sleeve. A first resilient spring structure is provided to exert an actuating bias on the jaw structure for gripping the pin while a second resilient, spring structure is provided to absorb shock loads experienced by the nose assembly during installation; the first and second resilient, spring structures are constructed to operate substantially independently of each other. A series of openings are provided at the forward end of the nose assembly to define a structure for expelling dirt and debris which would otherwise be trapped therein.
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