A reversible ratchet tool includes a cage-type reversing mechanism including a cage member for shifting rollers from their first positions to their second positions. The structure and configuration of the cage member is improved with resilient members for preventing the rollers being stuck unintentionally when the rollers are positioned either in the corresponding first positions or the corresponding second positions, while being capable of maintaining and restricting the rollers upright in place when the rollers are shifted from the corresponding first positions to the corresponding second positions.

A torque output device includes a body with an opening in the top. A top toothed part is located beneath the opening and includes a bore located corresponding to the opening. The top toothed part includes multiple top teeth. A drive shaft secured in the body and includes a central hole in which a rod is located. A driving portion is formed to the lower end of the drive shaft. The drive shaft and the top toothed part are freely rotated relative to each other. A bottom toothed part is mounted to the drive shaft and freely moves up and down relative to the drive shaft. A resilient member is mounted to the drive shaft and biases the bottom toothed part. A pressure collar is threadedly connected to the lower end of the body to set the torque between the engagement of the top and bottom teeth.

A quick reciprocating wrench includes a main body, a claw, and an elastic device therebetween. The main body includes a first jaw opening having a pivot end and a block portion. The claw includes a second jaw opening having a pivotal combination portion and a retaining portion. The pivotal combination portion is pivotally connected with the pivot end, so the claw and the main body pivotally move against each other. The fastener is engaged in the first and the second jaw openings. Distance between the block portion and the neighboring force bearing face of the fastener decreases along a direction in opposite to the expansion direction of the claw and the block portion. The largest width of the distal end of the retaining portion is greater than the smallest distance between the block portion and the first force bearing face of the fastener.

A tool for installing and removing a highly-torqued fastener that allows an individual to easily and efficiently remove or install a bolt from or onto a crankshaft pulley or similar assembly. The tool includes a prismatic housing, a worm gear assembly, a torque input, and a torque output. The prismatic housing is a rigid structure that is used to conceal and protect the worm gear assembly. The torque input allows an individual to manually provide the torque force through the use of a ratchet tool, motor drive, or other similar tool. The torque output is able to receive a bolt socket in order for the tool to provide the torque force to a bolt of a crankshaft pulley. The worm gear assembly is used to transfer the torque force from the torque input to the torque output. Thus, the tool can easily remove or install a bolt.

A single-sided fastener retaining device provides for low-profile, strong fastener retention, low FOD risk, compatibility with a wide range of driving tool and fastener types and sizes that is inexpensive to manufacture and capable of driving the fastener at an angle. A release mechanism includes a resilient arm and a lever arm joined by a fulcrum that contacts the shaft of a driving tool. A fork at the end of the lever arm includes first and second arms that extend to either side of and at least to the level of the axis of the driving tool to define an opening facing the axis to receive the shaft of a fastener of various sizes and hold the head of the fastener to the working end of the driving tool in a retained position. The release mechanism is responsive to the application of a force to elastically deform the resilient arm causing the lever arm to pivot on the fulcrum moving the fork away from the axis to a release position to release the fastener. The release mechanism is responsive to the removal of the force to return the fork to the retained position.

A double-sided, detachable tool includes a first tool half and a second tool half. The first tool half has a first tool head on a first end, a first stepped profile on a bottom surface, and a latch protruding from the bottom surface. The second tool half has a second tool head on its first end, a second stepped profile on its bottom surface, and a latching aperture extending through the second tool half from its top side to the bottom side. The latch is inserted into the latching aperture to connect the first tool half to the second tool half and is removed from the latching aperture to detach the first tool half from the second tool half. The transitions from the stepped profiles to the seconds ends of the tool halves create a substantially flush surface therebetween.

A ratchet wrench has a head. The head is recessed with a driving chamber. A ratchet wheel is disposed in the driving chamber. The driving chamber is covered with a cover plate. The head further has a first shaft hole. The cover plate has a second shaft hole. Two sides of the ratchet wheel are provided with a first shaft portion inserting through the first shaft hole and a second shaft portion inserting through the second shaft hole, respectively. A bearing ring is sleeved onto the second shaft portion. An outer periphery of the bearing ring abuts against an inner wall surface of the driving chamber for positioning and lubricating the ratchet wheel, so that the ratchet wheel can rotate smoothly.

A reversible ratchet tool includes a cage-type reversing mechanism including a cage member for shifting rollers from their first positions to their second positions. The structure and configuration of the cage member is improved with resilient members for preventing the rollers being stuck unintentionally when the rollers are positioned either in the corresponding first positions or the corresponding second positions, while being capable of maintaining and restricting the rollers upright in place when the rollers are shifted from the corresponding first positions to the corresponding second positions.

A nut runner device includes a main body including spindles, and support portions that support the spindles rotatably around a longitudinal axial line, a detachable unit that is detachably connected to a tip of the main body, and includes a wrench that is disposed coaxially with the spindles and is rotatable integrally with the spindles and an air passage that extends inside of the spindles and the detachable unit in a direction along the longitudinal axial line, and connects a discharge port provided in the spindle, and a suction port that opens to a tip surface of the detachable unit, wherein a tip portion of the wrench is disposed in the suction port, and air that is sucked from the suction port to the discharge port 20c via the air passage passes by the tip portion of the wrench and a fastening member fitted to a tip of the wrench.

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.