Patent ID: 9194410
Filing Date: 2015-11-24
Classification: F16B

Abstract:
1. A nutless bolt comprising: a body having a shaft capable of insertion in to a hole and a stop coupled to the body, the stop configured to stop the body falling wholly into or through the hole, the shaft being provided with an axially extending bore, wherein the bore comprises a blind hole which is closed at a down hole end of the shaft and open at an up hole end of the shaft; a locking mechanism disposed in the shaft and operable to extend radially from the shaft to lock the body in the hole; and, an actuating mechanism disposed in the shaft and being movable axially in the bore in a down hole direction from a preapplied position in which the actuating mechanism does not cause the locking mechanism to extend radially from the shaft, to a locking position where the actuating mechanism causes the locking mechanism to extend radially from the shaft to lock the body in the hole, and subsequently to a release position down hole of the locking position where the actuating mechanism is retained in the body and displaced relative to the locking mechanism to a location enabling the locking mechanism to retract radially into the shaft and the bolt to be withdrawn.