Abstract: Tap guide assembly devices, systems, and methods are disclosed herein. A tap guide assembly can have a body assembly, a tension pin assembly, a tension spring, and a setscrew. The body assembly can have an elongate body and a drill bushing. The drill bushing can have a diameter that is less than the diameter of the elongate body and can be positioned within a portion of the elongate body. The tension pin assembly can have a pin and a collar and can be configured to be received within the body assembly. The tension spring can be positioned proximate to the collar. The setscrew can be securely positioned proximate to the tension spring and within the second opening of the elongate body.

Abstract: A lock structure is constituted of a gear and an engagement/disengagement switching section. The gear is disposed concentric with a turning center of an operating lever. The engagement/disengagement switching section is provided with an engagement pawl such that the engagement pawl can move toward and away from the gear. The engagement pawl is connected to a switching lever to form a substantially T-like shape, and the switching lever is pivotally supported by a body section of the engagement/disengagement switching section. A locking operation of the switching lever switches between the locked state and unlocked state of the operating lever. In an engaged state, a gap having an opening angle of ? in a direction in which the operating lever loosens is formed between a tooth groove of the gear and the engagement pawl.

Abstract: A shank attachment device attaches a core drill to a rotating portion of a drill device and includes an arbor and a shank. The arbor is detachably attachable to the rotating portion. The arbor and the shank are detachably attachable to each other. The shank is detachably attachable to the core drill. A stopper engages a groove of the shank to stop a movement of the shank in an axial direction away from the arbor. A rotational torque of the arbor can be transmitted to the shank by engaging a first engaging portion of the arbor with a first engaged portion of the shank. The shank contacts the arbor to stop the movement of the shank in the axial direction toward the arbor.

Abstract: A tool for resurfacing a counterbore of a cylinder bore in an engine block includes a holder fixedly attached to the engine block using existing threaded holes, and a cutter rotatably supported by the holder and axially movable while being rotated. The cutter is positioned to cut and resurface a counterbore in the top of the cylinder bore. A plurality of springs bias the cutter head axially toward the engine block while rotating the cutter, thus providing a uniform force while cutting and resurfacing the counterbore. A ratchet wrench matably engages the upper end of the shaft to rotate the cutter, with the ratchet wrench extending in a single lateral direction from the shaft. A related method is also discussed.

Abstract: A tool holder comprises an elongated body having a first end portion for receiving a handle and a second end portion with an adjustable tool retaining mechanism for holding a tool, an elongated handle releasably retained in the first end portion and being configured to be slideable between stop positions at opposite ends, and a release mechanism at the first end portion configured to enable the handle to be separated from the body when operated.

Abstract: A ratcheting torque wrench comprising a torsional shaft connected to a hex tip; a sleeve that fits over the torsional shaft; a sleeve dial having a hole and configured to fit around the sleeve such that the diameter of the sleeve dial hole accommodates the sleeve; a shaft dial connected to the sleeve dial; a nylon ring connected to a ratchet housing; a ratchet gear connected to the ratchet housing, the ratchet housing mating with the ratchet gear; a spring connected to the nylon ring and the ratchet gear; a ratchet cover that fits over the ratchet housing; a retaining ring connected to the ratchet cover and configured to engage the torsional shaft; a ratchet fitting connected to the ratchet housing, wherein the ratchet fitting accommodates a first handle, wherein the sleeve has a hole to accommodate a second handle.

Abstract: Improved, draw bar assisted, rotary hole sawing apparatus that provides the versatility and methods required whereby operator ingenuity can achieve a set up to accomplish the required hole sawing or similar type machine operation in a wide variety of positions, conditions and situations. The design provides for applying rotational force from either the cutter side or opposite side of the device, and can be applied by hand power or with power tools. Provision is made, with a backing plate, to facilitate sawing very thin materials and to increase stability. The setup can be arranged so that draw bar pressure can be applied from either end of the device. Provision is made so that compensating force can readily and constantly be applied to resist the side force which tilts the tool axis relative to the work piece as a result of the secondary force introduced by the ratchet type method of rotating the cutter.

Abstract: A hand-held deburring tool comprising a handle member with a distal end having a cavity therein, within which a unirotary ratchet bearing is disposed. The unirotary ratchet bearing has a deburring tip element-receiving bore therein for engaging the shank of a deburring tip element positioned therewithin. A support element is mounted in a lower portion of the cavity in the handle member, for abutting contact with a proximal shank extremity of a deburring tip element positioned within the bore of the unirotary ratchet bearing. This tool accommodates a wide variety of deburring tip elements which are positionable with the proximal shank portion thereof in the bore of the unirotary ratchet bearing and with the proximal extremity thereof in abutting contact with the support element. The deburring tool may be usefully employed to remove burring or flashing from holes or openings in a wide variety of workpieces, e.g., aluminum plate stock.

Abstract: A compact tap wrench includes a ring-base, a pair of diametrically opposed handles, and a chuck mechanism friction-fit into the ring-base. A ratchet mechanism is built into one of the handles. The chuck mechanism includes interchangeable jaws for accommodating different ranges of tap sizes.

Abstract: A pipe tapping ratchet assembly is disclosed herein which comprises a ratchet handle and a socket attachment received thereon. The socket attachment defines an aperture within which an adapter is received, the aperture and the adapter being configured to prevent relative rotation therebetween. A tap is received within holes defined by the adapter. The holes in the adapter are conveniently configured to receive presently available taps, while preventing relative rotation between the taps and the adapter.