Thread connection, in particular to the attachment of a tool or a tool adapter, at an extension mechanism

摘要

The screw connection for attaching paint rollers (2) or adapters to extension handles (4) comprises a bolt (5) on the end of the extension which screws into a socket (6) in the roller handle. A lug (8) on the handle fits into a notch (9) on the extension to lock the connection when they are completely screwed together.