Abstract: A family of light-weight, durable, resilient tile spacers adapted for insertion into intersecting joint spaces between tile courses, and to be left in place after the spaces have been filled with grout. Each spacer has a plurality of thin-walled hollow limbs that project radially into the intersecting joint spaces. The side walls of the limbs are compressed by the tiles on either side of the joint spaces, the amount of compression being limited by the abutment of structural elements formed on the inner faces of the side walls with stops positioned within the limbs. In one embodiment of the invention, pairs of structural elements are mounted to the limbs' respective side walls. In another, pairs of structural elements are mounted to both of the limbs' side walls. Grout figs the submerged hollow limbs during the grouting process and upon curing permanently seals and immobilizes the spacer.

Abstract: A grout float, including a blade and a pair of core sections defining a handle. Interlocking male tapered bosses and female tapered receptacles join the core sections. Tapered tongues on the core sections pass through openings in upstanding flanges on the blade. The tapered tongues produce a wedging action with the flange openings whereby the locking union of the core sections also secures the handle rigidly to the blade. For comfort, the assembled handle and blade are encapsulated in an overmolded elastomeric liquid-tight sheath.

Abstract: An elongated dovetail tongue on the top surface of the trowel blade slips endwise into a closely conforming groove formed in the base of the removable handle until its end abuts a shoulder at the end of the groove. The tongue is longer than the groove, and a keeper is adapted to slip onto and abut the end of the tongue protruding from the groove. A boss on the end of a resilient arm extending from the keeper engages a detent in the base, locking the keeper to the handle, immobilizing the tongue, and thereby securing the handle to the blade. Disengaging the detent mechanism releases the keeper and allows it to be removed and the handle readily separated from the blade.