The mechanical technology of converting oscillatory motion, into one direction of rotation, as described and claimed in U.S. Pat. No. 5,881,609, while being efficient, useful and having numerous applications, has its disadvantage of not being able to function unless user employs both hands; one hand to apply oscillatory motion to an input, while opposite hand immobilizes the axial rotation of the converting gear-train, in order for the conversion to be activated. Hence, the goal of this documentation, is to teach several different means, that maintain the immobility of axial rotation of the dual-drive gear train in order to activate the dual-drive feature, without the use of either of user's hands, thereby conveniently leaving one of user's hands available for holding a work piece.

The mechanical technology of converting oscillatory motion, into one direction of rotation, as described and claimed in U.S. Pat. No. 5,881,609, while being efficient, useful and having numerous applications, has its disadvantage of not being able to function unless user employs both hands; one hand to apply oscillatory motion to an input, while opposite hand immobilizes the axial rotation of the converting gear-train, in order for the conversion to be activated. Hence, the goal of this documentation, is to teach several different means, that maintain the immobility of axial rotation of the dual-drive gear train in order to activate the dual-drive feature, without the use of either of user's hands, thereby conveniently leaving one of user's hands available for holding a work piece.

A zero distance tool for turning a fastener is disclosed. The tool may have a driver configured to receive a torsional input. The tool may also have an adapter rotatably coupled to the driver. The adapter may be configured to engage with a fastener. The tool may have a housing configured to enclose the driver and the adapter.

An attachment is described that is configured for attachment to an arm of a piece of heavy construction equipment. The attachment is configured to rotate a section of pipe during break out (i.e. disconnection or disassembly) from another section of pipe and/or make up (i.e. connection or assembly) with another section of pipe. The attachment is configured to break the joint or torque the joint to a predetermined torque value, unthread or thread pipe, and lift the pipe under the power of the heavy construction equipment.

A method and apparatus for disconnecting an end rod from a drill string coupled together by a threaded connection is provided. A rod handling apparatus includes a gripper unit having a floating sled with a sensor unit configured to monitor relative axial position of the sled relative to a frame of the gripper unit to determine a decoupling of the threaded connection and a separation of an end rod from the drill string.

A tool attachment includes a first body, a first gear, a second gear, at least one third gear, a cover, multiple bolts and multiple tools. The at least one third gear is engaged with the first and second gears. When either one of the first and second gears rotates, the first gear, the second gear and the at least one third gear rotates together. The tools can be connected to the tool attachment as needed.

A tool attachment includes a first body, a first gear, a second gear, at least one third gear, a cover, multiple bolts and multiple tools. The at least one third gear is engaged with the first and second gears. When either one of the first and second gears rotates, the first gear, the second gear and the at least one third gear rotates together. The tools can be connected to the tool attachment as needed.

An oil filter remover includes a main body, a toothed element, three claw elements, and an elastic element. The main body has three first pivot portions and a first connecting portion between two adjacent first pivot portions. The toothed element is arranged at the center of the main body and is formed with an annular toothed portion. Each claw element has a bent clamping portion and a second pivot portion. The second pivot portions are pivotally connected to the first pivot portions respectively. Each claw element has a toothed portion to be engaged with the annular toothed portion respectively. One of the claw elements has a second connecting portion between the clamping portion and the second pivot portion. The elastic element is connected to the first connecting portion and the second connecting portion therebetween so that the claw elements tend to pivot toward the main body.

Devices, systems, and methods are provided for driving an implant and applying counter torque. For example, a driver can include a handle, a driver shaft, and a counter torque shaft, the counter torque shaft being laterally offset from the driver shaft. A distal end of each shaft can mate with a specific type of implant and/or anatomy. The shafts can be removed and replaced from the device, allowing a user to select shafts having particular lengths and/or mating tips. In use, distal ends of the shafts can be fixed or constrained relative to one another and to an implant such that the counter torque shaft cannot orbit around the driver shaft. Rotating the handle can rotate the driver shaft, driving the implant. This can cause the counter torque shaft to try to orbit around the driver shaft, but the fixed/constrained ends restrict this motion, applying the counter torque.

Devices, systems, and methods are provided for driving an implant and applying counter torque. For example, a driver can include a handle, a driver shaft, and a counter torque shaft, the counter torque shaft being laterally offset from the driver shaft. A distal end of each shaft can mate with a specific type of implant and/or anatomy. The shafts can be removed and replaced from the device, allowing a user to select shafts having particular lengths and/or mating tips. In use, distal ends of the shafts can be fixed or constrained relative to one another and to an implant such that the counter torque shaft cannot orbit around the driver shaft. Rotating the handle can rotate the driver shaft, driving the implant. This can cause the counter torque shaft to try to orbit around the driver shaft, but the fixed/constrained ends restrict this motion, applying the counter torque.