This Application seeks to protect Applicant's HYTORC® Z® System which involves: tools having multi-speed/multi-torque modes with torque multiplication and vibration mechanisms without use of external reaction abutments; a force transfer means to yield in-line co-axial action and reaction for use with such tools; driving means and shifting means capable of attaching to washers under the nut for use with such tools and force transfer means; associated washers and fasteners for use with such tools, force transfer means and driving means; and related accessories for use with such tools, force transfer means, driving means, washers and fasteners. The HYTORC® Z® System includes the following: Z® Washers located under nuts or bolt heads of various types having engageable perimeters of multiple shapes, sizes, geometries and serrations, such as washer/fastener radius engagement differentials, and frictionally biased faces with relatively higher friction against the flange surface and relatively lower friction against the nut, such as friction coefficient increasing treatment means of various types, sizes and locations; HYTORC Z® Guns incorporating a powerful intermittent (impact, vibration, ultrasonic, etc.) mechanism, a precise torque multiplier in the same tool combining rapid run-down with calibrated torque; HYTORC® Z® Sockets with dual drive coaxial action and reaction having outer sleeves to react on Z® Washers and an inner sleeves to turn nuts or bolt heads; HYTORC® Z® Spline Adapters and Reaction Plates for backwards compatibility with HYTORC®'s torque/tension systems including the AVANTI® and ICE® square drive systems, the STEALTH® limited clearance system, the pneumatic jGUN® series, the FLASH® Gun and LITHIUM Series electric multipliers and more; the combination of HYTORC Z® Washer and the HYTORC® Z® Dual Friction Washer™ including a dual friction-enhanced face washer and/or the HYTORC® Z® Nut/Bolt for counter-torque under a nut or bolt head on the other side of the joint; HYTORC® Z® Dual Drive Offset Links for tight clearances while using HYTORC®'s torque/tension systems; HYTORC® Z® Vibration Mechanisms applied thereof; Z®-Squirter® Washers; Z®-DTI Washers; HYTORC® Z® Washer and Nut Assemblies; Anti-Loosening Z® Washers; and any combinations thereof. Further disclosures include: Tapered Fastener Assemblies; Tapered Torsional Couplings; Two-Part Tapered Nut Assemblies; Two-Part Tapered Thread Nut Assemblies; HYTORC® Anti-Loosening Z® Washers, Nuts and SMARTSTUDS; and any combinations thereof.

A reaction washer is optimized for lock-on, optional stiction ring and for a predetermined indentation depth of bidirectional serrations for secure reaction torque transfer during initial and full actuation of respective nut or bolt heads resting on it. An optional lock-on ring embedded around the reaction socket is ergonomically actuated to latch on and off underneath the reaction washer. Axial offset of the peak stress areas away from the actuation socket edges provides for reduced actuation socket diameter and consequently for the entire tool and system remaining substantially within radial assembly limits established for prior art actuation sockets alone. A coupling unit is attached to and tightened on a power torque wrench via a clamp tool utilizing the power wrench's own torque. A hand hold groove and a lock able snap release button offset from the coupling castle snap connection contribute to safe and ergonomic operation and system peak performance.

Apparatus for use with a tool assembly in operations of tightening or loosening threaded fasteners about an axis are disclosed, and in one example includes: a lower clamp assembly; an upper clamp assembly; a reaction adaptor assembly; and a spring assembly formed between the upper clamp assembly and the reaction adaptor assembly. Advantageously an operator can tighten or loosen all fasteners without having to change the initial setup of the apparatus. The lower clamp assembly eliminates the need for extra operators and heavy and bulky equipment to hold the apparatus near the fasteners. The upper clamp allows the operator to rotate the apparatus around with ease. The spring assembly stabilizes and eases vertical height adjustment of the apparatus. The reaction adaptor substantially negates reaction turning forces of the tool assembly during the operations. Drive knobs provide easy alignment of and quick and safe mounting of the tool assembly on the fasteners. Bolting operations about an axis are completed faster, cheaper and with little or no risk of operator injury.

A torque tool for applying torque to a workpiece is disclosed. A drive shaft is connected to a first component with a rotatable output such that rotation of the drive shaft rotates the rotatable output and a second component is fixedly arranged relative to the first component. A beam transducer extends lengthwise axially and is coupled to the two components. The first component is arranged such that a reaction force experienced by the rotatable output tends to turn the first component relative to the second component. The transducer beam resists which causes it to bend. A bending measurement means or sub-system is then used to measure the degree to which the beam transducer bends.

A method of installing a plurality of nut and bolt fasteners upon a structure is disclosed. The method includes placing a jig around the nut of a first fastener and the nut of a second fastener, securing the jig to the first fastener, and then using a power tool to tighten the nut of the second fastener to a target torque. The step of tightening the nut comprises engaging a socket portion of the power tool with the nut, securing the power tool to the jig such that a handle portion of the power tool is prevented from rotating about an axis of rotation of a socket portion of the power tool when the nut is being rotated by the socket portion. A jig, jig fasteners for securing a jig to a fastener, and a fastening head for a power tool are disclosed.

A miniature patch-type control infusion device includes an infusion unit (102). The infusion unit (102) comprises a drug storage unit(s) (100), a metal piece (110), a piston(s) (120), a rigid screw(s) (130), a rotating shaft (160), a driving unit(s) (150), a driving wheel(s) (140) provided with wheel teeth (141), a power unit(s) (180) and a rebound unit(s) (170). The driving unit (150) includes at least two driving portions (151a, 151b). The driving unit (150) can rotate around the rotating shaft (160) in the driving direction and the returning direction. The power unit (180) and the rebound unit (170) cooperate with each other to apply force to the driving unit (150) to rotate the driving unit (150). The infusion device also includes a position detector(s) (190), the metal piece (110) and the position detector(s) (190) interact to generate signals. Using this infusion device, patients will have more infusion rate options, which increase the flexibility of controlling drug infusion.

A unilaterally driven drug infusion device includes: a reservoir, a piston and a screw, the piston connected with the screw and arranged in the reservoir; a driving unit including rotating shaft and driving member, and the driving member including driving end; driving wheel provided with wheel teeth; a linear actuator and a reset unit respectively connected to the driving member; and at least two blocking walls, arranged at one side of the driving unit to limit the advancing position of the driving unit. The infusion device is able to precisely control the rotation amplitude of the driving member and improve the infusion accuracy of the infusion device. The user or the closed-loop system is able to flexibly select different infusion modes to precisely control the body fluid level to meet the needs of the body, improving user experience.

A cooling assembly for a power tool includes an air mover configured to be disposed within a housing assembly at a first end of a generally longitudinal enclosure proximate to a handle enclosure. The air mover is configured to direct air into the housing assembly and then generally perpendicularly to a longitudinally extending direction of the generally longitudinal enclosure. The cooling assembly also includes a duct configured to connect to the air mover and be in fluid communication with the air mover to direct air into the handle enclosure. The duct includes an inflow segment defining a first area for receiving the air from the air mover, an outflow segment defining a second area for directing the air from the air mover into the handle enclosure, and a connecting segment connecting the inflow segment to the outflow segment.

A hydraulic torque wrench is disclosed and includes a nut engaging portion with ratchet teeth on an external surface thereof. There is also a support member which can rotate relative to whilst retaining the nut engaging portion. A ratchet mechanism cooperates with the ratchet teeth to apply a rotational force to the nut engaging portion as a result of the pushing force from a hydraulic ram. Side plate cover a junction between the nut engaging portion and the support member with the side plates having a noncircular aperture through which a nut and bolt can extend when the wrench is in use.

An orthopedic implant kit for tightening a set screw to a head of a pedicle screw for holding a spinal rod to the pedicle screw, the kit including a screw extender for holding the head of the pedicle screw, a set screw driver for engaging with the set screw to threadably tighten the set screw to the head of the pedicle screw, a first torque limiting mechanism for limiting a torque between the set screw driver and the screw extender to a first torque value or a first torque indication mechanism for indicating that the first torque has been reached, and a second torque limiting mechanism for limiting a torque between the set screw driver and the screw extender to a second torque value, the second torque value being higher than the first torque value.