Abstract: The invention comprises an adjustable box wrench that can provide a more accurate grasp and/or sufficient grip/contact with the faces of the head of a bolt, nut, and/or similarly related objects. The invention comprises a series of pins and links which form a loop within a hollow body and are folded onto each other to form a tight gripping surface at the wrench's box ends. The invention may also contain slide-switches and/or scroll knobs to help actuate link closure or guide links within the chamber of the body until the desired set of links is within a box end.

Abstract: A method for operating a ratchet wrench having a tangential belt drive mechanism and a ratchet gear therein, including the steps of momentary pulling on the driven end of the belt for rotating the ratchet gear during a forward cycle; continually applying a first resilient tension force on the return end of the belt; continually applying a resilient compression force on the driven end of the belt of a same magnitude as the first resilient tension force toward the return end of the belt, and relaxing the step of pulling and allowing the belt to return to an initial position of the belt before the step of pulling. In another aspect of the present invention, there is provided a tangential drive mechanism comprising a first and second springs, one on each side of the ratchet gear and each acting on the belt toward a return end of the belt.

Abstract: The general purpose of the ratchet pulley system is to provide the user with a tool capable of greater speed, convenience, and torque in loosening or tightening fasteners. The torque multiplying ratchet pulley preferably comprises an extruded drive lug; a grippable housing disk; at least one pulley (rotatable/non-rotatable); a pawl; and a recoilable pull-cable (or non-recoilable version in certain embodiments) with a handle (T-shaped) wherein the extruded drive lug is preferably connected to a recoilable pull-cable such that when a user pulls the recoilable pull-cable via the handle, the extruded drive lug is rotated allowing a fastener to be turned (tightened or loosened.

Abstract: A power valve wrench includes a power drive assembly having a motor and a speed reduction device driving an annulus which defines a large center opening and a plurality of lugs or recesses on the interior wall of the annulus. The opening in the annulus receives a drive member having complementary lugs or recesses. The drive member, in turn defines a concentric polygonal opening which may be square, hexagonal, octagonal or other regular polygon shape which receives a complementarily configured stanchion of a valve handwheel drive member. A selection of valve handwheel drive members having 4, 6, 8, 10 or 12 slots may be utilized with the power valve wrench. A safety or retaining ring removably attached to the valve handwheel drive member retains the member on a valve handwheel.

Abstract: A wrench, which includes a hollow three-way (or two-way) casing, a plurality of coupling shafts respectively mounted in the ends of the casing for holding a respective tool accessory, and a transmission mechanism coupled between the coupling shafts for enabling the coupling shafts to be rotated synchronously, wherein the transmission mechanism includes a plurality of transmission members respectively coupled to the coupling shafts inside the casing and meshed with one another, and a plurality of compression springs respectively mounted in the coupling shafts to force the transmission members into engagement with one another, the transmission members each having a rectangular shank at one end inserted into a rectangular coupling hole on the respective coupling shaft and supported on the corresponding compression spring, and a bevel gear at an opposite end meshed with the bevel gear at the transmission member in an adjacent coupling shaft.

Abstract: A tool for quickly removing or replacing threaded fasteners such as nuts or bolts has a spool-like body with an axial bore. A socket in the bore is dimensioned to engage a fastener. A flexible member can be wrapped around a circumferential channel in the body. A user can loosen or tighten A fastener by wrapping the flexible member around the channel and pulling on a pull ring on the free end of the flexible member. The tool is particularly well adapted to removing or tightening nuts or bolts in constricted spaces such are encountered when repairing automotive engines or other machinery. The tool is simple and inexpensive to manufacture. The tool may be provided in a kit having several tools for turning fasteners of several standard sizes.