Patent ID: 6212775
Filing Date: 2001-04-10
Classification: B25B,Y10T

Abstract:
A blind hole bushing puller comprising:a rectangular cross block having a first end-portion and a second end portion, each of said end-portions having a threaded leg hole formed therethrough, said cross block also having a centrally located unthreaded cross block hole;a pair of elongated leg screws, one of said leg screws passing through and being threadingly engaged within one of the threaded leg holes, and the other said leg screw passing through and being threadingly engaged within the other threaded leg hole;a circular bushing insert, said bushing insert having a centrally located unthreaded bushing insert hole, said bushing insert being sized to snugly fit about an inside diameter of a bushing that is to be removed from a hole;a bolt, a washer, and a nut, said bolt having a bolt head at an upper end thereof, said bolt being sized to pass through the bushing insert hole and the cross block hole with the bolt head being positioned adjacent an upper portion of the bushing insert, said bolt head being sized slightly larger than the bushing insert hole so as to not allow the bolt head to pass through the bushing insert hole, said bolt having a sufficient length so as to allow a lower portion of the bolt to extend beyond a lower end of the cross block hole, said bolt being securable by said washer and said nut threadingly engageable on the lower portion of the bolt adjacent the cross block, said washer being sized slightly larger than the cross block hole so as to not allow the washer and the nut to pass through the cross block hole;whereby when said bushing insert is securely attached within a bushing secured within a hole and said bolt is secured through the bushing insert and the cross block, said leg screws can be tightened in a direction wherein an upper portion of the leg screws comes into engagement with a housing portion supporting the bushing, said leg screws can then be further tightened in an alternating fashion thereby pulling and eventually removing the bushing from the hole.