A multi-bit driver apparatus containing a driver housing, a plurality of rotary drivers, and a rotary driver mechanism is presented. The driver housing contains a driver receiving cavity, and a plurality of rotary apertures. The plurality of rotary each contains a bit shaft, and a bit mounting aperture. The driver receiving cavity is positioned within the driver housing. The plurality of rotary apertures is distributed about the driver housing. The plurality of rotary drivers is positioned within the driver receiving cavity. The bit shaft is rotatably connected along the plurality of rotary apertures. The plurality of rotary drivers is rotatably engaged to each other through the rotary driver mechanism, where the plurality of rotary drivers is configured to rotate in tandem with each other. The bit mounting aperture traverses through the bit shaft.

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.

A tool includes a first output from a gear system, the first output along a first axis and a second output from the gear system, the second output along a second axis. A first torque limiter is attached to the first output along the first axis and a second torque limiter is attached to the second output along the second axis. A first tool bit is attached to the first torque limiter along the first axis and a second tool bit attached to the second torque limiter along the second axis.

A tool includes a first output from a gear system, the first output along a first axis and a second output from the gear system, the second output along a second axis. A first torque limiter is attached to the first output along the first axis and a second torque limiter is attached to the second output along the second axis. A first tool bit is attached to the first torque limiter along the first axis and a second tool bit attached to the second torque limiter along the second axis.

.[.The present invention discloses a.]. .Iadd.A .Iaddend.bidirectional mechanical converting unit.[., comprising.]. .Iadd.includes.Iaddend.: a main shaft; a driving mechanism, which including a driving .[.means.]. .Iadd.assembly .Iaddend.and a reversing .[.means.]. .Iadd.assembly .Iaddend.which are coupled to each other; and a rotation .[.means.]. .Iadd.assembly .Iaddend.for inputting torque, an rotation axis of the rotation .[.means.]. .Iadd.assembly .Iaddend.being coaxial with the main shaft, the rotation .[.means.]. .Iadd.assembly .Iaddend.and the driving mechanism being coupled to each other, and the driving mechanism delivering the torque to output at the main shaft at a predetermined direction, no matter in which direction the rotation .[.means.]. .Iadd.assembly .Iaddend.rotates; wherein the predetermined direction can be switched via the reversing .[.means.]. .Iadd.assembly.Iaddend.. .[.The present invention is simple structured, not only can efficiently utilizes the movements of the rotation means in either way, but also can switch the rotation direction of the output shaft conveniently upon demand, with easy operations..].

A fastening tool includes a gear train and a socket. The gear train rotates as the fastening tool moves between a non-operated position and an operated position. The socket receives a fastener at a first end of the fastener. The socket is rotatably supported to the gear assembly so that the socket rotates as the gear assembly rotates.

A tensioning apparatus is adapted to simultaneously tension a number of jackbolts of a multi jackbolt tensioner. The tensioning apparatus may be made compact by overlapping gear disks of the spindle gears and further act as a torque multiplier between the other gears of the tensioning apparatus. The tensioning apparatus can be part of a combination with a power transfer assembly.

A tensioning apparatus is adapted to simultaneously tension a number of jackbolts of a multi jackbolt tensioner. The tensioning apparatus may be made compact by overlapping gear disks of the spindle gears and further act as a torque multiplier between the other gears of the tensioning apparatus. The tensioning apparatus can be part of a combination with a power transfer assembly.

A cabinet leg is provided including a body securable to an underside of a cabinet and a shaft engageable with the body such that rotation of the shaft moves the shaft toward or away from the body. A foot is secured to a lower end of the shaft including a first portion attached to the shaft and a second portion rotatable relative to the first portion. A plurality of openings are provided around the periphery of the foot for receiving a first end of a tool such that teeth on the tool engage with teeth on the first portion. Rotation of the tool causes rotation of the first portion relative to the second portion, thereby rotating the shaft and adjusting the height of the cabinet leg.