A method for connecting a thermoplastic line element to a connecting element includes the steps of: providing the at least one thermoplastic line element; providing the connecting element having a thermoplastic body wherein a heating element is embedded in the body for generating heat in a welding region for welding the body to the at least one line element; joining the connecting element to the at least one thermoplastic line element; providing a welding device for welding the connecting element to the at least one thermoplastic line element; welding the connecting element to at least one thermoplastic line element by generating heat in the welding region using the welding device. The welding of the connecting element to the at least one thermoplastic line element is stopped by the welding device before the end of the planned welding duration if an error criterion is met.

The invention relates to a filter device for the exchange of substances, comprising a pipe section-shaped housing with a center of gravity and with two housing ends, in which housing a hollow fiber bundle consisting of semi-permeable membranes is arranged, comprising, furthermore, an end cap having a first and second opening, wherein the housing and the end cap configure a first sealing surface which connects the housing and the end cap sealingly, and wherein the first sealing surface is spaced apart further from the center of gravity of the housing than the aperture, and wherein a first fluid chamber is formed between the first sealing surface and the first opening of the end cap, via which first fluid chamber the first opening is connected to the first flow chamber, wherein the housing and the one end cap configure a second sealing surface, wherein the first and second sealing surface are not configured by way of a sealant.

A housing includes a first surrounding wall connected around a base wall. The first surrounding wall has a first joint portion opposite to the base wall, a first outer surface and a first inner surface. The first outer and inner surfaces extend from the first joint portion toward the base wall. The first joint portion is stepped and has a first projecting portion adjoining the first outer surface, and a first shoulder portion indented from the first projecting portion and proximal to the first inner surface. The first shoulder portion has a plurality of parallel spaced-apart ribs protruding therefrom in a same direction as the first projecting portion. Each of the ribs has a tip that does not extend beyond a top end of the first projecting portion.

An implantable medical device includes a first component including a first material, a second component including a second material, and a fiber matrix including a plurality of fibers. The fiber matrix joins the first component to the second component. The fiber matrix includes a first a first portion connected to the first component, and a second portion connected to the second component. The first portion of the fiber matrix is interpenetrated with, and mechanically fixed to, the first material. The first portion of the fiber matrix directly contacts the first material.

A method and system for the ultrasonic non-destructive testing of joints in plastic pipes using A-scans. A hand-held ultrasonic transducer is used to perform an A-scan and a comparison made on a response from the interface region of the joint used to determine a quality of the joint. Levels of result can provide a binary output to give an indication of whether or not a defect is present in the joint. Comparison techniques are described. Tests for coupling efficiency and performance are described making the system useable by an unskilled technician. The system finds application in fault detection on electro-fusion welds in plastic pipe joints.

A flow cell and a method for connecting components of a microfluidic flow cell, in particular for integrating component parts into a carrier structure of the flow cell, in which a gap is formed between the components to be connected. The gap is filled with a solvent. The material of at least one component bordering the gap dissolves in the solvent and the material completely fills the width of the gap and partially fills the height thereof after evaporation of the solvent.

A tool for use in fusing an outlet fitting in the side wall of a plastic pipe has a base with three perpendicular guide rods. A movable plate is reciprocated on the guide rods in response to manual operation of a rack-and-pinion. The movable plate has a hole oriented to align a drill adapter and an outlet fitting adapter which are interchangeably inserted into the hole on an axis extending through a predetermined point on the longitudinal axis of the pipe. A retractable ratchet strap tightly girts the pipe to secure the tool against the pipe. The ratchet strap assures that the tool always maintains its original orientation on the pipe and the hole assures that interchanged drill and outlet fitting adapters are always returned to their original orientation in the tool. Therefore, the outlet fitting is always fused in its proper orientation in the pipe.

A method of fastening an edge structure to a construction element includes providing the construction element, being a planar structure with two cover regions and a middle region between the cover regions; providing the edge structure being continuously extended, the edge structure having contact surfaces with a thermoplastic material shaped to lie against the cover regions in an outer surface of the construction element, and, opposite the contact surfaces, a coupling-in surface for coupling energy into the edge structure; coupling energy into the edge structure and pressing the contact surfaces against the cover regions until at least a portion of the thermoplastic material is liquefied and pressed into the cover regions; and repeating or continuing the steps of coupling and pressing until the edge structure is attached to the building element at a plurality of discrete locations or over an extended region along an edge of the construction element.

Disclosed are joints and methods for forming joints of nonmetallic components such as piping components made from a nonmetallic composite material. The components are joined by an adhesive containing an x-ray absorbing additive for providing a contrasting signal in x-ray inspection of the joint. The joints can be nondestructively tested by positioning the joints relative to an x-ray source and an x-ray detector. The joints and the adhesive therein are then exposed to x-ray radiation from the source of x-ray radiation. The x-ray radiation, having passed from the x-ray source to the x-ray detector, is detected over an area and an x-ray image of the x-ray radiation detected is created. The x-ray image is then read to identify defects in the joint.

A welding structure includes a first object and a second object connected to each other. The first object includes a first surface, a second surface, a first bonding surface, a welding portion and a second bonding surface. The first bonding surface is connected to one side of the second surface away from the first surface. The welding portion is disposed on a surface perpendicular and connected to the first bonding surface. One side of the second bonding surface is connected to the welding portion. The second object includes a third surface, a fourth surface, a third bonding surface and a fourth bonding surface. The third bonding surface is corresponding to the first bonding surface and connected to one side of the fourth surface away from the third surface. The fourth bonding surface is corresponding to the welding portion and the second bonding surface.