A power tool includes an outer housing having a drive unit support portion and a handle portion, an inner housing positioned at least partially within the handle, and a drive unit positioned in the drive unit support portion. The drive unit includes an output shaft extending at least partially through the handle portion. The power tool also includes a ball screw mechanism having a nut supported at least partially within the inner housing and a screw coupled to the nut for relative axial displacement therewith in response to relative rotation between the screw and the nut. Torque from the output shaft is applied to one of the nut and the screw to cause the relative rotation. The handle portion exerts a reaction torque on the inner housing in response to the relative rotation between the nut and screw to prevent the inner housing from rotating relative to the outer housing.

A power tool includes an outer housing having a drive unit support portion and a handle portion, an inner housing positioned at least partially within the handle, and a drive unit positioned in the drive unit support portion. The drive unit includes an output shaft extending at least partially through the handle portion. The power tool also includes a ball screw mechanism having a nut supported at least partially within the inner housing and a screw coupled to the nut for relative axial displacement therewith in response to relative rotation between the screw and the nut. Torque from the output shaft is applied to one of the nut and the screw to cause the relative rotation. The handle portion exerts a reaction torque on the inner housing in response to the relative rotation between the nut and screw to prevent the inner housing from rotating relative to the outer housing.

A hand tool adapted to manipulate and open split rings is provided. The hand tool has two elements both having handles operatively associated so that the distal end jaw portions of the elements are movable between a closed and an open position. An opening jaw has a penetrating probe for opening convolution of a split ring, while the opposing supporting jaw provides a supporting surface acting as an anvil providing opposing force to the other linear elements probe. The split ring is generally disposed around the spaced apart opposing jaws, permitting the probe to penetrate the convolutions over a deeper range because there is no limitation created by the opposing jaw.

The invention regards a tool (1) for applying torque to an maneuvered object, such as for example a screw head or nut, including at least a first jaw (4), and at least a second jaw (5) where the first jaw (4) and the second jaw (5) are connected to at least one lever (arm) (2). What is unique with the tool is that at least one of the jaws (4, 5) includes at least one recess (7) with a first contact surface (8) and a second contact surface (9) of which at least one of the contact surfaces (8) and (9) is arch-shaped. A method of using the tool is also disclosed.

The invention regards a tool (1) for applying torque to an maneuvered object, such as for example a screw head or nut, including at least a first jaw (4), and at least a second jaw (5) where the first jaw (4) and the second jaw (5) are connected to at least one lever (arm) (2). What is unique with the tool is that at least one of the jaws (4, 5) includes at least one recess (7) with a first contact surface (8) and a second contact surface (9) of which at least one of the contact surfaces (8) and (9) is arch-shaped. A method of using the tool is also disclosed.

A stay-in-place lining is provided for lining a structure fabricated from concrete. The lining comprises a plurality of panels connectable via complementary connector components on their longitudinal edges. Each panel comprises a first connector component on a first longitudinal edge thereof and a second (complementary) connector component on a second longitudinal edge thereof. The lining comprises at least one edge-to-edge connection between the first connector component of a first panel and the second connector component of a second panel, the edge-to-edge connection comprising a protrusion of the first panel extended into a receptacle of the second panel through a receptacle opening. The receptacle is shaped to prevent removal of the protrusion from the receptacle and the receptacle is resiliently deformed by the extension of the protrusion into the receptacle to thereby apply a restorative force to the protrusion to maintain the edge-to-edge connection.

A stay-in-place lining is provided for lining a structure fabricated from concrete. The lining comprises a plurality of panels connectable via complementary connector components on their longitudinal edges. Each panel comprises a first connector component on a first longitudinal edge thereof and a second (complementary) connector component on a second longitudinal edge thereof. The lining comprises at least one edge-to-edge connection between the first connector component of a first panel and the second connector component of a second panel, the edge-to-edge connection comprising a protrusion of the first panel extended into a receptacle of the second panel through a receptacle opening. The receptacle is shaped to prevent removal of the protrusion from the receptacle and the receptacle is resiliently deformed by the extension of the protrusion into the receptacle to thereby apply a restorative force to the protrusion to maintain the edge-to-edge connection.

The present invention relates to a manual hydraulic multi-functional extra-high-voltage insulating gear gripper pliers stick for live-wire work and the pliers stick and, more specifically, to a manual hydraulic multi-functional extra-high-voltage insulating gear gripper pliers stick for live-wire work and an indirect live-wire construction method using the pliers stick, which: allow components or the like, which are installed on and removed from an electric pole in order to perform electric wire-stringing work or fix electric wires, to be remotely constructed by means of the indirect live-wire work while maintaining a safe distance from live wires when constructing power distribution equipment in an extra-high-voltage live-wire state; ensure safety by eliminating risks due to instability during work, said instability occurring due to the intensity of the labor and the physical limitations of the workers; and bring about improvements in utilization efficiency.

The present invention relates to a manual hydraulic multi-functional extra-high-voltage insulating gear gripper pliers stick for live-wire work and the pliers stick and, more specifically, to a manual hydraulic multi-functional extra-high-voltage insulating gear gripper pliers stick for live-wire work and an indirect live-wire construction method using the pliers stick, which: allow components or the like, which are installed on and removed from an electric pole in order to perform electric wire-stringing work or fix electric wires, to be remotely constructed by means of the indirect live-wire work while maintaining a safe distance from live wires when constructing power distribution equipment in an extra-high-voltage live-wire state; ensure safety by eliminating risks due to instability during work, said instability occurring due to the intensity of the labor and the physical limitations of the workers; and bring about improvements in utilization efficiency.

A clamp has: a clamping set and a positioning set. The clamping set has a shaft pivotally connected to a first arm and a second arm, and the shaft is provided with an elastic member. The first arm and the second arm are kept open by the elastic member, and the first and second arms are extended downward with a first handle and a second handle. The first handle is provided with a first pin, and the second handle is provided with a second pin. The positioning set is pivoted on a middle section of the first and second handles with the first and second pins. The positioning set is approximately horizontal, and travel distance of the shaft is greatly reduced, which not only reduces the structural cost, but also effectively improves the smoothness of the shaft movement.