Methods and systems for increasing the efficiency of a remote wrench. The remote wrench can include a flexible plate within the tool housing or as part of the housing that is more flexible than the rigid housing in conventional remote wrenches that has been shown to limit efficiency. Additionally, a fixed support and a base can be provided that are collectively capable of being coupled to the remote wrench, preferably at the flexible plate, to increase efficiency. The remote wrench operation is therefore improved by reducing inefficiencies and providing a maximum torque output.

Methods and systems for increasing the efficiency of a remote wrench. The remote wrench can include a flexible plate within the tool housing or as part of the housing that is more flexible than the rigid housing in conventional remote wrenches that has been shown to limit efficiency. Additionally, a fixed support and a base can be provided that are collectively capable of being coupled to the remote wrench, preferably at the flexible plate, to increase efficiency. The remote wrench operation is therefore improved by reducing inefficiencies and providing a maximum torque output.

A power tool attachment part for a power tool, comprising: an elongate housing including an upper housing part and a lower housing part interconnected with the upper housing part, an input gear wheel configured to be connected to an output shaft of a power wrench, which input gear wheel is arranged at a first end of the housing, an output gear wheel with an output connection, which output gear wheel is arranged at a second end of the housing, an intermediate gear wheel arranged inside the housing and configured to transmit rotation of the input gear wheel to the output gear wheel, a socket arranged concentrically with and radially inside the output gear wheel, and a torque sensor configured to measure the strain on the socket and thereby obtain a measure of the torque at the output gear wheel.

Drive tools having with gear trains that may be used to drive a plurality of fasteners simultaneously. The gear train may include a driving gear that drives a plurality of fastener driver gears, each of which is connected to a fastener driver. Each of the plurality of fastener drivers may be turned simultaneously by rotation of the driving gear, which may be used to turn a similar plurality of fasteners a desired number of turns so that a desired preload is achieved simultaneously.

Drive tools having with gear trains that may be used to drive a plurality of fasteners simultaneously. The gear train may include a driving gear that drives a plurality of fastener driver gears, each of which is connected to a fastener driver. Each of the plurality of fastener drivers may be turned simultaneously by rotation of the driving gear, which may be used to turn a similar plurality of fasteners a desired number of turns so that a desired preload is achieved simultaneously.

A wrench includes a head which has a first room and a second room defined therein. The first room communicates with the second room. Two holes are defined through the bottom of the head and respectively communicates with the first and second rooms. A first driving gear and a second driving gear are respectively located in the first room and the second room, and are engaged with each other. Each of the first driving gear and the second driving gear has an operation portion and a protrusion extending from two ends thereof. The user uses another wrench to drive the operation portion of the first gear which drives the operation portion of the second driving gear to tighten or loosen the object connected to the operation portion of the second gear.

A wrench includes a head which has a first room and a second room defined therein. The first room communicates with the second room. Two holes are defined through the bottom of the head and respectively communicates with the first and second rooms. A first driving gear and a second driving gear are respectively located in the first room and the second room, and are engaged with each other. Each of the first driving gear and the second driving gear has an operation portion and a protrusion extending from two ends thereof. The user uses another wrench to drive the operation portion of the first gear which drives the operation portion of the second driving gear to tighten or loosen the object connected to the operation portion of the second gear.

A gear-driver adapter configured to switch between at least two gear ratios includes a switch which exerts a force on a drive shaft to move the drive shaft between at least two positions, each corresponding to a gear ratio, in an epicyclic gear system created by a main gear body, ball driver and gear holder with gears. The drive shaft contains keyed structures and, depending on its position within the gear system, the keyed structures on the drive shaft engage or disengage a plurality of key stops. The key stops, in turn, interact with the gears to generate the desired gear ratio. The contours of the keyed structures on the gear holder allow the drive shaft to move between positions without first being specifically positioned. The gear-driver adapter also includes a handle adapter and a driver adapter, allowing users to use any handle or driver with the gear-driver adapter.

A method and apparatus for a lateral torque extension assembly is disclosed. The assembly includes a gear train comprising a plurality of gears aligned along a longitudinal axis. The assembly includes an input drive body for receiving a rotational drive source and imparting a rotational force to one of the gears in the gear train. The assembly includes an output drive assembly having an output drive gear and an output drive body for imparting a rotational force laterally to a threaded member. The assembly has various configurations. The assembly has a first configuration where the output drive body may be mounted to a last one of the gears in the gear train and a second configuration where the output drive body may be mounted to an intermediate one of the gears in the gear train. The gear train may also be configured to accommodate two drive sources.

Apparatus and methods that may be employed to install or remove a threaded connector by allowing a cable or tubing segment attached to the threaded connector to pass through an open pass-through area that is defined to extend through the tool so as to allow the threaded connector to be tightened and/or loosened relative to the fitting by turning the connector a full revolution or more while the cable or tubing is attached to the connector and extending through the tool.