Abstract: An air compressor comprising an air intake unit for importing air at atmospheric pressure. A cylinder means for compressing air; a storage tank; a first airline extending between the air intake unit and the cylinder means, the first airline being configured to convey air from the air intake unit into the cylinder means; a second airline extending between the cylinder means and the storage tank, the second airline being configured to convey compressed air from the cylinder means to the storage tank; a motor connected to the cylinder means, configured for driving the cylinder means; a valve inserted into the first airline, the valve being configured to be adjustable between a closed condition and an open condition.

Abstract: A bolt system for attaching workpieces together, in situations where access is denied at the distal surface of a distal workpiece.

Abstract: An air compressor comprising an air intake unit for importing air at atmospheric pressure. A cylinder means for compressing air; a storage tank; a first airline extending between the air intake unit and the cylinder means, the first airline being configured to convey air from the air intake unit into the cylinder means; a second airline extending between the cylinder means and the storage tank, the second airline being configured to convey compressed air from the cylinder means to the storage tank; a motor connected to the cylinder means, configured for driving the cylinder means; a valve inserted into the first airline, the valve being configured to be adjustable between a closed condition and an open condition.

Abstract: A folding knife comprising a handle which includes a left cover and a right cover that are separated from each other by a space and that are connected to each other by at least one pin; a blade configured to rotate around an axle extending between the left cover and the right cover, the blade defining a means for attachment spaced apart from the axle by an offset distance; a helical torsion spring surrounding the pin, the spring having a first end that is fixed to the handle and a second end that is free to move in relation to the handle; and a connecting element that connects the free end of the spring to the means for attachment on the blade.

Abstract: A folding knife comprising a handle which includes a left cover and a right cover that are separated from each other by a space and that are connected to each other by at least one pin; a blade configured to rotate around an axle extending between the left cover and the right cover, the blade defining a means for attachment spaced apart from the axle by an offset distance; a helical torsion spring surrounding the pin, the spring having a first end that is fixed to the handle and a second end that is free to move in relation to the handle; and a connecting element that connects the free end of the spring to the means for attachment on the blade.

Abstract: A bolt system for attaching workpieces together, in situations where access is denied at the distal surface of a distal workpiece.

Abstract: The combination of a jack stand and a vertically oriented, compact hydraulic jack enables a user to avoid misplacement when lifting a load. The stand includes a vertically oriented column moveable between a plurality of different elevated positions. An underside of an overhanging member attached to the column is engaged by a piston member of the jack to elevated the column as the jack is elevated.

Abstract: The combination of a jack stand and a vertically oriented, compact hydraulic jack enables a user to avoid misplacement when lifting a load. The stand includes a vertically oriented column moveable between a plurality of different elevated positions.

Abstract: The application discloses a screwdriver that is movable from a first position to a second position. In the first position, the drive shank of the screwdriver is positioned parallel with the elongate handle. In the second position, the drive shank of the screwdriver is positioned perpendicular to the elongate handle, and is selected when additional torque must be applied to the drive shank. Structure of the screwdriver provides enhanced stability for the drive shank supported by the handle.

Abstract: A jacking system is disclosed in which a hydraulic jack, having a raisable piston, is used, in combination with a jack stand having a raisable support column, to raise a load. In a preferred embodiment, the support column has two components that may telescope into each other and that may be held in fixed position by two ratchet mechanisms. The jack stand is configured so that, when the hydraulic jack is positioned alongside the jack stand, the piston of the hydraulic jack is able to interact with and raise the support column along with the load.

Abstract: A power assisted utility knife is described, having a blade that may be oscillated back and forth by a motor. The utility knife further includes structure that permits the blade to be withdrawn into the knife for safekeeping, and to be extended outside the knife sufficiently far to permit an old blade with a dull edge to be removed, and a fresh blade to be inserted.

Abstract: A merchandising rack for displaying a plurality of four-way lug wrenches is described, comprising, a plurality of ribs connected to each other; a plurality of upward support elements, for restraining a four-way lug wrench from moving downwardly and laterally; and a plurality of downward support elements, for restraining a first arm of the wrench from moving upwardly, laterally, and from moving away from the rack; and a plurality of stubs positioned to restrain the wrench from rotating about an axis extending along the first arm of the wrench.

Abstract: A portable air compressor including a base platform, a motor, a compressor, a first and a second cylindrical air tank. A vertically extending rod is attached to the base platform. At least two feet are connected to the second tank, for supporting the second tank on the first tank. A cylindrical collar is attached to an external surface of the second tank, the collar being positioned to slide over an upper portion of the rod when the second tank rests on the first tank, and holds the second tank immovable on the compressor, yet allows the second tank to be removed from the compressor when desired.

Abstract: An axially elongate hobby knife having an external housing defining an internal cavity is described. The hobby knife has structural features that permit the rotation of an rearward actuator. Such rotation causes a cover to advance over the blade at the same time as the blade withdraws into the cover, thereby to provide for enhanced safety and security of the blade.

Abstract: An axially elongate hobby knife having an external housing defining an internal cavity is described. The hobby knife has structural features that permit the rotation of an rearward actuator. Such rotation causes the blade to withdraw into, or advance from, the cover, thereby to provide for enhanced safety and security of the blade.

Abstract: A hydraulic jack system is described, suitable for lifting heavy loads such as automobiles. The jack system is operable by a powered driver fitted with a socket for coupling to a nut rotationally fixed to the jack system, wherein the driver is removable directly after use. As such, no handle is required for activating the hydraulic jack system. The jack system has a low profile, reducing the danger of being accidentally knocked into during operation. When operated by a powered driver, the driver rotates a camshaft mounted to the jack system, the camshaft reciprocally drives a push rod that activates a plunger for hydraulically elevating a piston ram.

Abstract: A wheel dolly is disclosed that is suited to serve as both an automobile jack, capable of holding large loads aloft for extended periods, relying on only mechanical systems and eliminating hydraulic systems. In a further aspect, the wheel dolly of the present invention does not include extended arms, handles, or levers for pumping or rotating the lifting mechanisms. Each lifting element terminates in only a single nut exposed to the user. Preferably, each nut of each lifting system has the same plan dimensions as the other, thus providing the advantage of allowing the user to operate the dolly with a driver and only one socket.

Abstract: A folding table assembly having an open configuration and a closed configuration. Spring loaded hinges provide the folding table assembly with an automated approach to unfolding the table assembly. Casters provide the table assembly with structure making the assembly portable.