Abstract: A concrete boom hose is provided with a first end that is connected to the outermost end of a series of concrete pipes and a second end through which the flowing concrete exits. The second end is provided with an inner diameter that is smaller than the inner diameter of the first end that is connected to the concrete pipe.

Abstract: A shut off valve for use with a concrete delivery hose includes a single flexible cylindrical sleeve disposed within a one piece, continuous rigid casing that surrounds the hose. A gas chamber is defined between the sleeve and the casing so that when pressurized gas is forced into the chamber, the sleeve will be displaced radially inwardly to constrict the hose and stop the flow of concrete. The shut-off valve also includes a relief valve for quickly exhausting gas from the valve, and an off/on indicator for indicating open/closed positions of the valve.

Abstract: A shut off valve for use with a concrete delivery hose includes a single flexible cylindrical sleeve disposed within a one piece, continuous rigid casing that surrounds the hose. A gas chamber is defined between the sleeve and the casing so that when pressurized gas is forced into the chamber, the sleeve will be displaced radially inwardly to constrict the hose and stop the flow of concrete. The shut-off valve also includes a relief valve for quickly exhausting gas from the valve, and an off/on indicator for indicating open/closed positions of the valve.

Abstract: A concrete boom hose is provided with a first end that is connected to the outermost end of a series of concrete pipes and a second end through which the flowing concrete exits. The second end is provided with an inner diameter that is smaller than the inner diameter of the first end that is connected to the concrete pipe.

Abstract: A convertible garden tiller includes a chassis, a pair of wheels supporting the chassis, an engine mounted on the chassis capable of driving the wheels in a given direction and a plurality of earth working tines. Each tine is generally unidirectional, having a preferred direction of movement through the earth and is disposed on an elongated tine shaft which rotates about a longitudinal axis in response to operation of the engine. The tine shaft is also pivotable 180 degrees about a transverse axis, to selectively rotate the tines in the given direction as well as the second direction. This construction therefore provides that each tine moves through the earth only in its preferred direction of movement. The tiller also includes guide handles which are selectively pivotable from a position above the tines to a position above the wheels for alternately converting from a rear tine mode to a front tine mode.

Abstract: An adjustable mowing and trimming apparatus is presented which employs a unique wheel adjust mechanism and trimming assembly. The apparatus includes a frame to which at least two wheels are rotatably mounted at opposite sides of an adjustable linkage which is loosely coupled to the frame through a moveable pivot assembly. A mechanism is provided for manually adjusting the moveable pivot assembly to actuate the adjustable linkage and thereby reorient the wheels on either side of the frame. The trimming assembly is mounted at a front portion of the frame and includes a spindle head fixedly mounted to a spindle depending from the frame so as to rotate with the spindle. The spindle head substantially covers the spindle and is sized such that a distal end thereof rests proximate to ground when the trimming apparatus is operational. A trimmer head is adjustably clamped about the spindle head so as to rotate therewith.

Abstract: A convertible garden tiller includes a chassis, a pair of wheels supporting the chassis, an engine mounted on the chassis capable of driving the wheels in a given direction and a plurality of earth working tines. Each tine is generally unidirectional, having a preferred direction of movement through the earth and is disposed on an elongated tine shaft which rotates about a longitudinal axis in response to operation of the engine. The tine shaft is also pivotable 180 degrees about a transverse axis, to selectively rotate the tines in the given direction as well as the second direction. This construction therefore provides that each tine moves through the earth only in its preferred direction of movement. The tiller also includes guide handles which are selectively pivotable from a position above the tines to a position above the wheels for alternately converting from a rear tine mode to a front tine mode.