A drop nipple wrench assembly can tighten and/or loosen a drop nipple of a fire sprinkler system. A drive handle of the wrench assembly can be folded along a guide shaft for storage. The drive handle can be extended generally perpendicular to the guide shaft to provide leverage for loosening and/or tightening the drop nipple.

Examples provide a method and apparatus for fastener pin removal. A fastener pin removal tool includes a tool body having a workpiece interface surface, a threaded hole and opposing side edges. A fitting is coupled to the end of the threaded screw that is proximate the workpiece interface surface. The fitting includes a keyhole-slot configured to receive the head of a pin. The keyhole-slot defines a set of spaced-apart jaws configured to engage the head of the pin that is received within the keyhole-slot. A rotational end-piece is coupled to the threaded screw and rotates to cause the fitting and the set of spaced-apart jaws to pull the head of the pin received within the keyhole-slot. As the rotational end-piece pulls the pin head, the pin is removed from a workpiece.

An oil filter wrench includes a handle, a rotation knob, a wrench unit, and a oneway control member. The wrench unit includes a threaded rod, an adjusting member, a restriction piece, a clamping member, two screw members, a support member, and a fixed member. The oneway control member is pivotally mounted in the fixed member. Thus, the clamping member and the oneway control member clamp and drive the oil filter to rotate in a oneway manner only.

The present invention is a device for installing and removing partially obstructed, upward-facing lightbulbs. It is comprised of a gripping element, a weight, a flexible rotary shaft having two ends, and an extension pole having two ends. The gripping element, itself, is comprised of a hollow, three-dimensional gripping element body having an inner and outer surface and a plurality of flexible, tactile members. The hollow, three-dimensional gripping element body is open at one end and closed at the other. At the open end, the plurality of flexible, tactile members are arranged about a peripheral rim at the opening. When the device is placed over a lightbulb, the flexible, tactile members capture the lightbulb. Rotating the extension pole will cause the lightbulb to rotate.

A long-shaft tool includes a shaft extending along a longitudinal axis and having a handle at a first end of the shaft and a second end opposite the first end with a holder for a manipulator wherein the holder has a protruding latch pin provided for engagement with a recess of a manipulator, which can be moved from the protruding position into a retracted position. The holder has a coupling half for coupling with a coupling half of a manipulator which is rotatable relative to a base body of the shaft.

The present invention relates to an ergonomic plier tool. More specifically, the invention relates to a piston actuated ergonomic plier tool having a 360-degree rotative and exchangeable head. The tool includes a body, lever, head cylinder, piston and jaw assembly. The disclosed tool allows an operator to work in tight spaces with her hand in one plane, while cutting/manipulating an object in an infinite number of planes different from that of her hand.

A ratchet wrench includes two arms extending from one end of the handle, and a head is pivotably connected between the two arms. The head includes a first connection portion and a second connection portion respectively formed to two opposite sides of the head so as to be connected with a pivotable member such as a socket or a bit as needed. The head is pivotable relative to the two arms, and the pivotable member is pivotable relative to the head. The ratchet wrench is able to be used in different angles and positions.

The invention aims to provide a rotation tool enabling work without obstructing a view of an operator and facilitating fine-adjustment for the tool. A rotation tool includes a flexible shaft including a tool portion at one end and a grip portion at the other end; and a cylindrical exterior body including curved portion on at least a part thereof, wherein a spiral protrusion is formed on at least a part of the shaft and a spiral groove is formed on at least a part of the curved portion, and the shaft is configured to be movable inside the exterior body by screwing the spiral protrusion and the spiral groove to each other.

Disclosed herein are devices, systems, and methods of an adjustable crowfoot wrench for use with large format fasteners such as bolts or hydraulic line nuts over 1 inch in size. The adjustable crowfoot wrench includes a base, a translating arm, and a gear. The translating arm include one or more fastener pads and a threaded translating shaft. The gear is configured to threadably engage the threaded translating shaft of the translating arm. The threaded translating shaft is configured to be received by and translate through a translating channel of the base. The base also includes a stationary pad, a drive aperture and gear retaining arms. The gear is retained by the gear retaining arms of the base when the gear is threadably engaged with the translating arm within the base.

An engagement structure for a tool contains: a drive member which includes an accommodation orifice, a hexagonal tooth portion, and six planes. A respective one of the six planes is arranged on a center of a respective one of six peripheral sides of the hexagonal tooth portion, and the two beveled rims extends from the two sides of the respective one plane and are connected with a first adjacent beveled rim of a first adjacent plane and a second adjacent beveled rim of a second adjacent plane. A ratio of lengths of the respective one plane, the first adjacent beveled rim and the second adjacent beveled rim is 2:1:2, and an angle between the respective one plane and each of the first adjacent beveled rims and the second adjacent beveled rim is 2 degrees.