An exhaust lining for an exhaust system of a motor vehicle has a first connecting element clamped between a first and second pipe. The first pipe forms a tailpipe. The second pipe forms a tailpipe cover. The tailpipe cover has a tubular inner part held on by means of the first connecting element which clings onto the first pipe via by means of a lever mechanism. A load arm of the lever mechanism, having the distance A, is shorter than an effort arm, having the distance B. The length of the effort arm is precisely defined, because the end of the effort arm lies against the first pipe via a punctiform contact area. A first contact surface of a clamping spring is designed offset from the longitudinal extent of a main body of the first connecting element to save space in the longitudinal direction of the main body.

An agricultural implement including a frame with a main frame section and at least one wing frame section such that the agricultural implement is configured for transitioning in between a work position and a transport position, at least one conveyance line, and at least one coupling device. The at least one coupling device includes a first coupling member attached to the first line portion and a second coupling member movably connected to the first coupling member and attached to the second line portion such that the at least one coupling device couples the first line portion and the second line portion of the at least one conveyance line in the work position and uncouples the first line portion and the second line portion of the at least one conveyance line in the transport position.

This disclosure provides systems, methods, and devices for a coupling device. In an aspect, a coupling device is configured with at least one fastener for compressing and also opening the coupling and a pushing bolt configured to apply an unlocking force on an object to be coupled by the coupling device. In another aspect, a method for engaging or disengaging a coupling device is disclosed. Other aspects and features are also claimed and described.

A connection device for vehicle hydraulic systems having a receiver block is provided, which has one or more connection holes; at least one orientable connector which has an input and/or output section and a connection end; and a fixing plate configured to fix the orientable connector to the receiver block. Where the orientable connector has a head provided with orientation means arranged between the input and/or output section and the connection end; and where the fixing plate has complementary orientation means configured to fit with the orientation means of the head to fix an orientation position (P.sub.3) of the orientable connector, the head being arranged between the fixing plate and the receiver block.

Disclosed are a pipeline connecting device, a pipeline element coupling piece and a coupling method therefor. The pipeline element coupling unit comprises a plurality of coupling units, a gasket arranged at the coupling unit, and a fastening element. Each coupling unit comprises two engaging keys located at two coupling ends thereof, each engaging key has an engaging surface, and each engaging surface has a variable curvature radius. The fastening element is coupled to the coupling unit, wherein the pipeline element coupling piece is adapted to be pre-mount onto the two pipeline elements and be aligned with engaging keys and corresponding grooves of the pipeline elements. When the fastening element is operated to fasten together the coupling units, each engaging surface is deformed to change the curvature radius to substantially match the curvature radius of the groove circumference of the bottom of the groove of the pipeline element.

A pipe coupling is provided for securing end portions of a pair of thermoplastic pipe elements together. The pipe coupling comprises a first half-shell and a second half-shell for receiving the pair of thermoplastic pipe elements, each one of the half-shells comprising a pair of contact surfaces facing the central space; a pivot attachment pivotally connecting the half-shells to one another at the pivoting ends and enabling the half-shells to pivot with respect to one another between a closed state and an open state; a first connector positioned at the connecting end of the first half-shell; and a second connector positioned at the connecting end of the second half-shell, the first connector and the second connector being complimentary to one another and connectable to each other when the half-shells are in the closed state to enable the welding solvent to sealably weld the contact surfaces and the pipe elements together.

Disclosed are systems and methods for connecting a hydraulic fracturing fluid source to various wells at a given well site. In general, use of disclosed systems and methods provide for repositioning (refocusing) the hydraulic fracturing operation amongst multiple wells may be achieved. In one example, a system to reroute fracturing fluid from a source to various wells at a well site may be provided. The use of adapters and quick clamp connections allow hydraulic fracturing fluid to be rerouted between various wells in a manner to decrease the cost and reduce hazards associated with changing hydraulic fracturing locations. Modular components of the system (and an overall modular design of the system itself) may allow a centralized manifold to be relocated to various locations at one or more well sites.

A connection device for vehicle hydraulic systems having a receiver block is provided, which has one or more connection holes; at least one orientable connector which has an input and/or output section and a connection end; and a fixing plate configured to fix the orientable connector to the receiver block. Where the orientable connector has a head provided with orientation means arranged between the input and/or output section and the connection end; and where the fixing plate has complementary orientation means configured to fit with the orientation means of the head to fix an orientation position (P.sub.3) of the orientable connector, the head being arranged between the fixing plate and the receiver block.

A pipe element coupler includes a plurality of coupling members, a gasket disposed in the coupling members and a fastening element. Each of the coupling members includes two engaging keys at two coupling end portions thereof each having an engaging surface that has varying radiuses of curvature. The fastening element is coupled at the coupling members, wherein the pipe element coupler is adapted for being preassembled on the two pipe elements to align the engaging keys with the corresponding grooves of the pipe elements. When the fastening element is operated to fasten the coupling members together, each of the engaging surfaces is deformed to change the varying radiuses of curvature, so as to substantially match a radius of curvature of the groove circumference at the bottom of the groove of the pipe element.

A pipe element coupler includes a plurality of coupling members, a gasket disposed in the coupling members and a fastening element. Each of the coupling members includes two engaging keys at two coupling end portions thereof each having an engaging surface that has varying radiuses of curvature. The fastening element is coupled at the coupling members, wherein the pipe element coupler is adapted for being preassembled on the two pipe elements to align the engaging keys with the corresponding grooves of the pipe elements. When the fastening element is operated to fasten the coupling members together, each of the engaging surfaces is deformed to change the varying radiuses of curvature, so as to substantially match a radius of curvature of the groove circumference at the bottom of the groove of the pipe element.