When coupling tubular parts by fitting, the seal interposed between them may roll on itself, be pinched or damaged. Now, a twisted or damaged seal no longer correctly ensures the seal-tightness and it is very difficult to detect this. The present application discloses a tool for installing a seal between two tubular parts, one male and one female, including a compression ring to encircle the male part and exert a compression on the seal before producing the join. The tool also includes a tongue that can be positioned at a chamfered surface of the female tubular part. The tongue makes it possible to offer the pre-compressed seal with the dimensions of the female part a continuous travel making it possible to prevent any twisting or other effect compromising the seal-tightness.

Present invention teaches a magnetic pad to work with clamping tools where the magnet and protrusions on the top surface provide for easy aligning and connection from the clamping tool to the pad, relying primarily on the use of a ring-shaped magnet embedded in the top surface. The bottom surface provides flexible holding surface upon work pieces with two grooves of different sizes. The pad materials can be made from soft metals to eliminate marring the surface of work pieces.

A pipe clamp includes a length of tubing having a pair of polygonal clamps moveably secured about the tube through an aperture located at a proximal end of each clamp. At a distal end of the tubing projects a nut which is perpendicularly secured thereto. A rod is engaged within the nut and in mechanical communication with the distal exterior end of the closest clamp. A handle is secured to the distal end of the rod.

A frame block clamp includes first and second block portions dimensioned and configured to provide first and second tube receiving apertures for snugly receiving a predetermined tube; and to provide first and second V configured recesses in respective first and second side portions when portions of said first and second block portions are cooperatively engaged. The frame block clamp further includes a retaining spring dimensioned and disposed to urge together predetermined portions of the first and second block portions to ultimately secure a tube in the first or second receiving apertures. The frame block clamp is ultimately secured in a vise to allow a person to service the tube secured in the first or second receiving aperture.

A machining assembly which allows for precise and repeatable machining operationsprimarily tube notchingto be carried out by an operator in various situations, and is specifically designed for hollow-form parting without use of a mandrel in prototyping and small-scale production. This system allows operators to cut copes in both typical and atypical materials, and offers the ability to produce double end-coped workpieces quickly. Additionally, the preferred embodiment can be equipped for use as a light-duty milling machine which incorporates portability with the benefits of traditional milling centers.

A tool for opening and/or closing rotatable joints, includes a slewing ring, a first grip member, and a second grip member. The first grip member is an annular plate. The second grip member includes two identical gripper arrangements, which include a gripper, an actuator, and bearing members of the actuator. The slewing ring includes an annular upper plate and an annular guide plate, between which plates grippers of the second grip member are arranged. The guide plate is arranged to slide in slots of slide pieces, which are in connection with the first grip member. The bearing members of the actuators are in connection with the first grip member, which actuators are arranged to move the grippers of the second grip member. The grippers are fastened to the slewing ring in a pivoted manner and arranged to grip the shaft of the joint.

The present invention relates to a three-dimensional (3D) printing system for manufacturing an artificial blood vessel and a method for manufacturing an artificial blood vessel using the same, wherein a cylindrical support having a hollow 3D porous structure including a thermoplastic polymer is manufactured and vertically fixed, and a hydrogel divided into at least two sections is discharged into the support, thereby maintaining the structure and shape constantly even after printing and manufacturing an artificial blood vessel having a hollow multilayered structure. The 3D printing system for manufacturing an artificial blood vessel comprises: a rotatable support manufacturing unit which forms a hollow cylindrical support having a 3D porous structure by discharging a polymer to the outer circumference thereof through a first head; a first head which forms a hollow cylindrical support having a 3D porous structure by discharging a polymer to the support manufacturing unit; a support vertically holding the hollow cylindrical support manufactured through the first head; and a second head which discharges a hydrogel, divided into at least two sections, into the cylindrical support vertically held and fixed to the support.

A clamp comprises first and second clamp halves, each comprising an elongate object receiving portion and a portion of a clamp retention mechanism. The first and second elongate object receiving portions are sized and shaped to cooperatively hold an elongate object at a desired position when the first and second clamp halves are fastened together. The first and second portions of the clamp retention mechanism are sized and shaped to (a) engage each other when the first and second clamp halves are moved towards each other in a first direction, (b) fasten the first and second clamp halves together without requiring use of a tool to engage the retention mechanism, and (c) disengage from each other when the first and second clamp halves are moved away from each other in a direction orthogonal to the first direction to unfasten the first and second clamp halves without use of a tool.

A hydraulic adapter for installing connecting flanges of an oil pipe comprises a first centralizer, a second centralizer, and a hydraulic cylinder. Tapered cylinders are disposed on the first centralizer. A first flange centralizing protrusion is disposed on the first centralizer. A hydraulic cylinder installation hole is disposed on the first centralizer between two of the tapered cylinders. Tapered protrusions are disposed on the second centralizer and fit with the tapered cylinders disposed on the first centralizer. An adjustment hole is disposed on the second centralizer. A second flange centralizing protrusion is disposed on the second centralizer. A base of the hydraulic cylinder is disposed on an outer side of the first centralizer, and a hydraulic arm of the hydraulic cylinder perforates through the hydraulic cylinder installation hole and the adjustment hole. An extrusion block is disposed at an end of the hydraulic arm.

At least some implementations of the present invention include the ability to access and secure a compressed riser portion of a pop-up sprinkler. Access is gained through use of the tip of the tool, sloped for access clearance between the sprinkler nozzle lip and outer sprinkler base. Once raised from the outer sprinkler casing, the riser is secured in a designated clamping bay or within designated clamping points. This two pronged approach accommodates varying diameter of sprinkler risers and increases the multi-use function of the tool. The tool's overall inward tension is provided by an engineered compression spring designed with adequate outward tension without making hand compression use of the tool restrictive. Use of the tool in an inward sweeping motion toward the sprinkler allows for raising and clamping the riser in a quick and simple fashion. Thereafter, allowing free and open-hand access for quick and thorough maintenance, repair, exchange or adjustment of the sprinkler nozzle and filter.