Emhart Inc.

David E Starke

Frank Piacenti

Robert W Brown, Jr

Tony L Dixon

A hole drill/fastener driving tool has a drive tube and a nut driver. A declutching sleeve which is intended to remain stationary during fastener driving receives the nut driver with the hex end of the nut driver passing through the closed end of the sleeve into the drive tube. A spacing is defined between the front of the nut driver and sleeve for declutching the nut driver when the screw is set.

Masonry anchor installation tool

A masonry screw anchor having two different constant diameter shank portions connected via a taper. Each portion has a set of constant diameter threads and intermediate smaller diameter protrusions with the threads and protrusions on the larger diameter shank portion being larger in diameter than the diameter of the threads and protrusions on the smaller diameter portion.

Masonry screw anchor

A two part screw anchor which is interconnected by capturing a pin on the receiving bore of a cap in an arcuate slot on the received cylinder of a collapsible part. The collapsible part is metal and the cap (and hence pin) are plastic so that by pushing the collapsible part away from the installed cap the pin will be severed and the two parts can be separated.

Growing community of inventors

Whitfield, PA, United States of America

David E Starke