A pneumatic fluid directional valve assembly for pneumatic torque tools controls and optimizes directional airflow for tightening and loosening threaded fasteners. The assembly includes an outer pneumatic valve portion, an inner pneumatic valve portion, and a push button rod assembly. The outer and inner valve portions form a relatively rotatable unit actuated by the push button rod assembly to direct airflow via various inlet and exhaust ports, slots, faces, passages, and sleeves. In another embodiment, the assembly includes a trigger lock safety feature to enhance operational safety.

A centering device comprises a base, a first jaw assembly operably engaged with the base, and a second jaw assembly operably engaged with the base. The first jaw assembly is configured to move longitudinally along the base, and the second jaw assembly is also configured to move longitudinally along the base. The centering device also includes an actuation assembly that operably engages with the base, the first jaw assembly, and the second jaw assembly. The centering device also includes a drive assembly operably engaged with the first jaw assembly. The drive assembly is operable to move the first jaw assembly longitudinally along the base. The movement of the first jaw assembly longitudinally along the base activates the actuation assembly, and the second jaw assembly is caused to move longitudinally along the base via the actuation assembly.

A portable torque power tool is disclosed herein and includes: a motor to generate a turning force; a drive to transfer the turning force; a turning force multiplication mechanism assembly to multiply the turning force; a shifter assembly to shift the tool between a lower speed/higher torque (LSHT) mode and a higher speed/lower torque (HSLT) mode; a torque transducer to measure torque output; wherein torque output is controlled by the torque transducer in LSHT mode; and wherein torque output is controlled by motor current in HSLT mode. In one embodiment of the present application, the torque transducer is a wireless torque transducer assembly formed at or near an output of a housing of the turning force multiplication assembly to improve measurement accuracy of torque output. Advantageously, simplified tool and system design and operation; reduced tool and system size; expanded functionality, greater durability and intuitive usability; and increased tool and system portability, efficiency, reliability and repeatability, all at low cost, are achieved. Further disclosed herein is an operation parameter regulation unit for use with a bolting system having a plurality of networked electrically powered torque tools and/or drive portions of torque tools described above for simultaneous tightening of industrial threaded fasteners. The operation parameter regulation unit includes: a processing unit; an output unit connected and/or integrated with the processing unit; an input unit connected and/or integrated with the processing unit; an activation unit connected and/or integrated with the processing unit for activating operation units of the plurality of networked electrically powered torque tools and/or drive portions of torque tools; and a control unit for controlling operation parameters of each of the plurality of networked electrically powered torque tools and/or drive portions of torque tools to maintain a difference between the operation parameters within a predetermined value. Advantageously, innovations disclosed in this application include operation parameter regulation units for bolting systems having a plurality of networked electrically powered torque tools and/or drive portions of torque tools for simultaneous tightening of industrial threaded fasteners. Indeed SIMULTORC is achievable with a plurality of networked electrically powered torque tools and/or drive portions of torque tools, particularly those of the handheld and/or mobile variety.

A multi-functional bench vice with a quick-change jaw includes a movable vice body, a fixed vice body, a screw rod, and a handle. The fixed vice body is provided with a fixed jaw. A quick-change assembly and a movable jaw assembly are installed on the movable vice body. The quick-change assembly includes an adjustment rod and a pull rod. The adjustment rod is installed on the movable vice body through an external thread, and is connected to one end of the pull rod through the internal thread. The helical direction of the external thread is opposite to the helical direction of the internal thread. The other end of the pull rod passes through the movable vice body and is clamped on the movable jaw assembly. The movable jaw assembly corresponds to the fixed jaw.

Systems and methods for a vaginal speculum holder are disclosed. In some aspects, a system may include a retractor and a holder. The retractor may include a blade assembly, a base, and one or more supports attached to the base and the blade assembly. In some aspects, the holder may include a receptacle configured to receive the base, and a fastener configured to secure the holder to an object. In some aspects, the method may include using a fastener of a holder to secure the holder to an object and using a receptacle of the holder to receive a base of a retractor.

An adjustable fixture assembly for marking objects, such as rifle(s), includes a base and an adjusting device. The base includes a platform having a first end, a second end, a pair of side walls, and a pair of tracks extending between the first end, and a second end. An activator section includes a neck section and a motor section including a motor having a circular base and a clamping surface for engaging the rear side of the rifle, wherein the clamping surface includes a first axis. The activator section includes a cradle member for holding the rifle(s). A laser marking device marks the rifle, as the rifle is fixedly attached to the cradle. As the cradle rotates about the axis, the laser marking device marks various surfaces of the rifle(s) at various angles thereby allowing variety and flexibility in laser marking.

A clamp assembly for securing small parts is described herein. In some embodiments, the clamp assembly comprises a free jaw and a fixed jaw configured to secure a part positioned at a proximal end of the clamp assembly between a free jaw pad and a fixed jaw pad. The free jaw is configured to rotate at least about a size pin positioned at a distal end of the fixed jaw opposite the part. The free jaw is rotated by a tightening feature positioned proximate the free jaw pad and fixed jaw pad at the proximal end. As the tightening feature is actuated, the free jaw pad rotates toward the fixed jaw pad securing the part therebetween when the fixed jaw pad and the free jaw pad are substantially parallel.

A handheld vise for dental crowns includes a vise block, an elongated handle extending from the vise block, a linear screw embedded in the vise block, and first and second jaws. The second jaw may be arcuate on a gripping surface thereof to conform to the shape of a dental crown. The handheld vise is sized for quickly and readily securing a dental crown such as a stainless-steel dental crown for use in pediatric dentistry. An elastomeric material may be used on the gripping surfaces of the vise. A radius of curvature of the gripping surface of the second jaw may be between about 25-35 mm. A height of the jaws may be between about 2-5 mm, and a distance between the first jaw and a vertex of the second jaw may range from about 3-10 mm. A method and kit for forming crowns including the handheld vise are disclosed.

A handheld vise for dental crowns includes a vise block, an elongated handle extending from the vise block, a linear screw embedded in the vise block, and first and second jaws. The second jaw may be arcuate on a gripping surface thereof to conform to the shape of a dental crown. The handheld vise is sized for quickly and readily securing a dental crown such as a stainless-steel dental crown for use in pediatric dentistry. An elastomeric material may be used on the gripping surfaces of the vise. A radius of curvature of the gripping surface of the second jaw may be between about 25-35 mm. A height of the jaws may be between about 2-5 mm, and a distance between the first jaw and a vertex of the second jaw may range from about 3-10 mm. A method and kit for forming crowns including the handheld vise are disclosed.

A vise having a modular construction that allows for ease of manufacture, assembly, and changeover or replacement of wear items, such as gripping surfaces of jaws of the vise. The modular construction also provides for reduced weight of the vise compared to conventional cast type vises. The vise also incorporates quick adjustment features allowing for the vise to be easily rotated, a position and size of an opening of the jaws to be rapidly adjusted, and a clamping force applied with ease.