Abstract: An adjustable tool is provided which includes a selectively positionable and lockable handle. The tool includes a main housing having a handle shaft axially directed transversely of the housing and a handle being rotatably mounted to the handle shaft for selective rotational movement about the handle shaft. The handle shaft has a threaded portion and threadedly advanceable thumbwheel at one end and a handle retaining pad at an opposite end. The handle is interposed between the thumbwheel and the retaining pad for compressive retention between them. The retaining pad includes a locking member comprising a protrusion for nesting reception in a locking member receiving port of the handle whereby upon advancement of the thumbwheel the handle is compressively retained between the thumbwheel and the retaining pad and the locking member protrusion is received in the receiving ports for locking the handle in a selected position relative to the main housing.

Abstract: An airless spray gun reversible spray nozzle unit is provided adapted to replace the normal or standard fixed spray position unit without any modification of the external spray head. The external spray head normally positions and holds the fixed position spray nozzle unit in spray position in the airless spray gun. The present adaptation is made possible by means of a floating or sliding female ferrule axially movably positioned and slideable intermediately between a pair of spaced apart keyed flanges defining the unit size which act as stops therefor and assures a leak-proof machined fit of the reversible nozzle when the inventive spray nozzle unit is positioned to spray, or in reversed position so the orifice of the nozzle can be backwashed and freed of binding occlusions.The size, weight and form of the unit adds substantially no increase in weight or volume to the conventional fixed position airless spray head spray nozzle unit and is easily and quickly manually reversed when desired.

Abstract: The invention comprises an externally mounted locking mechanism for telescoping tubes that permits releasable adjustment of the tubes to any telescoping position relative to each other and utilizes multiple cam action locking means operating both longitudinally and circumferentially relative to the tubes. Two preferred embodiments are disclosed, a two-piece structure and a three-piece structure, both of which are preferably molded from a plastic material.