A torque wrench may include a head having a driving member configured to be operably coupled to a socket, a handle, a lever arm operably coupled to the head and the handle at respective opposing ends thereof, and a torque adjuster configured to enable a torque setting of the torque wrench to be adjusted. The torque adjuster may include a fixed member affixed to the lever arm and a movable member operably coupled to the fixed member. The handle may include a first end cap at a distal end thereof relative to the head and a second end cap at a proximal end thereof relative to the head, the second end cap being disposed proximate to the movable member.

A screw driving tool includes a torque output element which defines an axis and is mounted in a housing, a torque transmission section with a plurality of depressions, and a torque transmission element, which is pretensioned by the force of a force accumulator and engages into at least one of the depressions, for coupling the torque transmission section to the housing so as to transmit a torque. The coupling is released when the torque transmission element leaves the depression in an edge-controlled manner against the force of the force accumulator, which is adjustable by an adjustment device, when a limit torque is exceeded. A switchover element is movable from a release position into a blocking position and allows the torque transmission element to leave the depression in the release position but blocks the torque transmission element in the blocking position.

The present invention surrounds to a ratchet apparatus, system and use thereof. The invention is presented to provide additional mechanical advantage and added angular engagement of a ratcheting wrench. In particular the present invention provides increased torque and angular engagement within a compact space without requiring an extended handle, wherein an extended handle reduces portability and further restricts access and movement within confined spaces.

A high reliability drug infusion device, includes: a drug storage unit including a drug outlet; a screw connected to a piston and a driving wheel provided with wheel teeth, respectively, the driving wheel drives the screw to move by rotation, pushing the piston forward; at least one driving unit cooperating with the driving wheel, the driving unit includes at least one driving portion a power unit and a reset unit connected to the driving unit, and the reset unit includes an elastic reset component and a linear-actuated reset component, and the elastic reset component alone applies a force to or together with the linear-actuated reset component to control the reset movement of the driving unit. The high reliability drug infusion can be used for improving the reliability and increasing the user's flexibility in choosing the infusion method.

A unilateral-driven patch-type drug infusion device, includes: an infusion unit, which includes a drug storage unit; a screw connected to a piston and a driving wheel provided with wheel teeth, respectively, the driving wheel drives the screw to move by rotation, pushing the piston forward; at least one driving unit cooperating with the driving wheel, the driving unit includes at least one driving portion; a power unit and a reset unit coupled to the driving unit, and an infusion tube structure, which includes a base and an infusion needle, and the base includes an initial position, a working position, and an intermediate position. This infusion device can output controllable and stable driving force, which eliminates safety hazards and improves user experience.

An interactive software application on a mobile computing device is used to configure an electronic torque wrench via a wireless connection. The software application obtains torque specifications for a vehicle from a remote database. When the torque specification require that work pieces be torqued in an ordered sequence, the software application guides the technician through the sequence, but accommodates changes when the technician departs from the sequence.

This invention discloses a drug infusion device, including: a drug storage unit; a piston and a driving wheel respectively connected with a screw, the driving wheel drives the screw to move by rotation, the piston is arranged in the drug storage unit, the screw advances the piston to move; a driving unit cooperating with the driving wheel, the driving unit includes more than two driving arms, the driving unit, through the multiple pivoting movement modes, drives driving arms to perform tooth number adjustable driving on the driving wheel for increment-adjustable infusion; and a power unit connected to the driving unit, the power unit exerts a force on the driving unit to lead the driving unit to perform a plurality of pivot steps. More than two driving arms are stalled on the driving unit, thereby achieving multi-level engagement on the driving wheel, and finally achieving the purpose of increment-adjustable infusion.

A ratchet comprises a head portion with a circular central housing having modular inserts in the form of three flat ring like layers, two outer fixed ramped profile layers engaged into housing locking profiles with a sequential actuating layer capable of limited rotation between. Opposing direction pawls are situated within the fixed layer ramped profiles. The actuating layer has engagement and disengagement profiles at either end of its pawl recesses projecting the incumbent pawls against the fixed layer ramped profiles in the chosen direction projecting them inwards locking the pawl teeth within the driven element teeth, whilst simultaneously disengaging the pawls facing the other direction. The actuating layer biasing protrusion resiliently projected in the chosen direction by a robust sprung plunger acting from within a switch bore, in the reverse direction the actuating layer resiliently rotates against said sprung plunger allowing the pawl teeth to resiliently slide over one another.

A ratchet tool having a head having a first cavity is adapted to receive a cover plate and a second cavity. An aperture extends between the first cavity and the second cavity. Disposed in the first cavity is a ratchet gear and a pawl. A selector switch disposed in the second cavity and moves the pawl between a first position and a second position. A retaining clip retains the selector switch in the second cavity. The retaining clip extends into the first cavity. The pawl includes a first extended portion and a second extended portion extending from a lower end of the pawl. At least a portion of the retaining clip is disposed between the first extended portion and the second extended portion. The first extended portion and the second extended portion contact the lower surface of the first cavity. An upper end of the pawl contacts the cover plate.

An interactive software application on a mobile computing device is used to configure an electronic torque wrench via a wireless connection. The software application obtains torque specifications for a vehicle from a remote database. When the torque specification require that work pieces be torqued in an ordered sequence, the software application guides the technician through the sequence, but accommodates changes when the technician departs from the sequence.