A uniquely designed torque wrench having a torque body, the torque body attached to a frictional squeezing clamp, and a lug socket which is rotationally connected to the frictional squeezing clamp. The frictional squeezing clamp entering a contracted stated during extension of a rod of a hydraulic cylinder, and entering an expanded state during the retraction of the rod of a hydraulic cylinder, the lug socket turning the wing nut of a hammer union.

Apparatus for use in operations of tightening and/or loosening threaded fasteners of the kind having a nut and stud about an axis are disclosed and include: a threaded assembly threadedly engageable with exposed threads of the stud above the nut and either a nut, a tool socket and/or a tool housing engagement assembly. Torque tools of the kind having a pass-through socket including the apparatus are disclosed. And systems including the torque tools of the kind having a pass-through socket including the apparatus and threaded fasteners are disclosed. Advantageously holding plate assemblies of the present invention: allow torque tools and/or drive extension links with through sockets to be used in vertical, inverted and/or tight clearance bolting applications; allow for simultaneous operation of multiple such tools on such bolting applications to achieve Parallel Joint Closure™; account for bolting application having long and/or protruding studs; and increase bolting speed and safety, efficiency, reliability and repeatability.

An improved multi-bolt and nut torque wrench for installing and removing bolts or nuts from flanged joints or the like which includes a plurality of torque stations having a plurality of high torque wrenches for engaging the heads of the bolts or nuts during a high torque phase of removal or installation; a plurality of low-torque motors operatively engaged with the wrenches for rotating the bolts or nuts during the low torque phase of removal or installation; a source of hydraulic fluid for driving the low-torque motors during the low-torque phase, and driving the high-torque wrenches during the high torque phase; and a mechanism for switching between the two phases depending on the torque needed.

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.

A hydraulic torque wrench and a method of operating a hydraulic torque wrench. The wrench may be operable to apply torque to a workpiece. The wrench may include a housing; a drive system; a driver rotatably driven by the drive system and configured to selectively engage the workpiece; and a gripping mechanism including an end configured to selectively engage the workpiece, the gripping mechanism being movable between a first position, in which the end engages a surface of the workpiece, and a second position, in which the end is disengaged from the workpiece.

A hydraulic torque wrench system includes an object including a plurality of fasteners and a hydraulic torque wrench. A wrench includes an orientation sensor and a controller having an electronic processor and a memory. The controller is configured to determine a desired sequence in which the wrench should tighten a plurality of fasteners on an object, receive a first measurement signal from the orientation sensor, and determine a first orientation value of the wrench based on the first measurement signal. The controller is further configured to compare the first orientation value to a first target orientation value associated with a first target orientation of the wrench for tightening a first fastener in the desired sequence, inhibit operation of the wrench if the first orientation value is not within a tolerance of the first target orientation value

A hydraulic torque wrench and method of operation. The wrench may include a housing supporting a drive element for engaging a fastener; a drive actuator for exerting a torque on the drive element; a sensor configured to sense movement of the housing; and a controller having an electronic processor, the controller being configured to receive a first signal from the sensor, determine, based on the signal, whether the housing is moving, and inhibit operation of the drive actuator in response to the housing of the hydraulic torque wrench moving.

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 hydraulic torque wrench comprises a ratchet link, a power head, and a signal carrying connector for connection to a controller. The ratchet link includes a housing and a drive plate mounted for rotation about an axis within the housing, the drive plate mounting one part of a first part of a ratchet drive. A socket is mounted for rotation within the housing, the socket providing a second part of the ratchet drive. During rotation of the drive plate in one direction the first and second part of the ratchet drive engage each other to cause rotation of the socket with the drive plate and during rotation of the drive plate in a second direction one of the first and second parts of the ratchet drive rides over the other such that the socket remains stationary while the drive plate rotates. The power head includes a piston and cylinder and hydraulic connections adapted for connection to a source of pressurised hydraulic fluid. The torque wrench mounts a proximity sensor connected to the signal carrying connector and configured to detect maximum extension of the piston. When maximum extension of the piston is detected the proximity sensor emits an electrical signal.