Abstract: A manually operated hammer-type stapler for attaching a material to a surface with a tabbed staple includes a staple driver having a staple drive blade moveable along a blade pathway between a raised position to a lowered position; a striker at the distal end of the stapler; an elongated handle extending rearwardly from the staple driver; an elongated staple magazine beneath and parallel to the handle, the staple magazine having a discharge end adjacent the blade pathway to position a staple beneath the driver blade; and an elongated tab magazine parallel to and beneath the staple magazine, the tab magazine having a discharge end adjacent the blade pathway to position a tab beneath the driver blade, whereby the driver blade moves from its raised position to its lowered position when the striker is impacted against the surface to drive a staple through a tab and into the surface.

Abstract: The ends of two sections of lined pipe (e.g. polyurethane lined steel pipe), in which the lining terminates a definite distance from each pipe end, are butted together, with an internal concentric sleeve spanning the unlined pipe ends and defining an annular hollow casting space at the area to be joined. The butted ends are then welded together at the joint. Thereafter a curable liquid polymer (e.g., liquid polyurethane composition) is introduced into the casting space through an opening in the unlined section of the pipe, and cured to a solid state in situ. The opening is then plugged.

Abstract: The ends of two sections of lined pipe (e.g. polyurethane lined steel pipe), in which the lining terminates a definite distance from each pipe end, and butted together, with an internal concentric sleeve spanning the unlined pipe ends and defining an annular hollow casting space at the area to be joined. The butted ends are then welded together at the joint. Thereafter a curable liquid polymer (e.g., liquid polyurethane composition) is introduced into the casting space through an opening in the unlined section of pipe, and cured to a solid state in situ. The opening is then plugged.