68 results about "Transverse force" patented technology

The invention discloses a side wall balance system and method for bionic flexible skin wing measurement, belongs to the technical field of aerodynamic wind tunnel tests, and aims to comprehensively and effectively identify the aerodynamic performance gain effect of a bionic flexible skin lift-augmentation and drag-reduction wing. The side wall balance system comprises a side wall balance, the side wall balance is installed in the side wall of the test section, the side wall balance comprises a floating disc and a fixed disc, the floating disc and the fixed disc are connected through three lateral force units, two longitudinal force units and a transverse force unit, and each force measuring unit comprises a tension-compression balance. The tested model is connected with the floating disc through the low-heat-flux heat insulation flange. Compared with a cantilever beam type side-wall balance, the assembled side-wall balance system of the tension-compression balance provided by the invention has the advantages that the overall rigidity is improved, and meanwhile, the interference among components is greatly reduced. In cooperation with an original measurement method, each element force and moment of force of a bionic flexible skin wing wind tunnel test can be accurately obtained.

Control cables in a surgical instrument are kept parallel to the instrument's longitudinal axis to prevent transverse forces from the cables being sensed by a transverse force sensor in the instrument. A surgical instrument includes an elongated hollow shaft having a longitudinal center axis. Multiple cables extend within the shaft. A force sensor includes a beam disposed within the shaft and one or more strain gauges disposed on the beam. A proximal anchor is disposed within the shaft and in contact with a proximal end of the beam. A distal anchor is at the distal end of the shaft and in contact with a distal end of the beam. A cable guide is disposed within the shaft to constrain portions of the multiple cables disposed alongside the beam to movement parallel to the center axis, and so prevent force from the moving cables causing transverse force on the beam.

The invention belongs to the technical field of fabricated buildings, and particularly relates to an energy consumption enhanced fabricated shear wall structure and a mounting method thereof. The shear wall structure comprises a plurality of shear wall units. In the vertical direction, each shear wall unit is provided with a plurality of opening units; the number of the shear wall units is odd, and X-shaped metal pieces are installed in the opening units of the even shear wall units. First friction strips are wound in the opening units on the shear wall units and at the same horizontal height; the X-shaped metal piece connects the two first friction strips to form a winding and binding crossed area; transverse stress plates are arranged on the upper portions and the lower portions of the two side faces in the thickness direction of the wall, and slidable stress plates are connected to the outer sides of the transverse stress plates in a sliding mode. A plurality of second friction strips are connected in the slidable stress plate; connecting short beams are connected between the two opposite side walls of every two adjacent shear wall units. The problem that the anti-seismic property of the fabricated concrete shear wall needs to be enhanced is solved.

The invention discloses a multi-axial force sensor with force measuring beams with high lateral force sensitivity and strong bending resistance, the multi-axial force sensor comprises a first table body, a second table body and a plurality of force measuring beams, the force measuring beams comprise a transverse force measuring beam and a vertical force measuring beam, the vertical force measuring beam comprises two sheet-shaped vertical beam arms which are parallel to each other, and the two sheet-shaped vertical beam arms are parallel to each other. The orientation of the larger side faces of the two thin-sheet-shaped vertical beam arms is consistent with the extending direction of the two ends of the transverse force measuring beam, and the two vertical beam arms are located on the two sides of the center line of the transverse force measuring beam respectively. The thin vertical beam arms are adopted, when the thin vertical beam arms are subjected to lateral force, deformation of the vertical beam arms is large, high sensitivity of the lateral force can be obtained, meanwhile, the vertical force measuring beam adopts a double-beam form of a thin-wall structure, the two vertical beam arms are separated by a certain distance, and the two vertical beam arms bear bending moment together, so that the force measuring beam can bear large bending moment. That is to say, the force measuring beam can maintain strong bending resistance on the basis of realizing high lateral force sensitivity.

A device for supporting and removably fixing shelves of furniture, such as bookcases, shelf units and the like, by a pin associated with a shelf and configured to be inserted in a hole formed in a side wall of a furniture item. The device is configured to be inserted in the thickness of the shelf and has a casing, inside whereof the pin is mounted, ending with a head, which is stressed by a compression spring, to protrude normally from the edge of the shelf. The casing has a substantially flattened parallelepiped shape and said pin is mounted so as to be able to retract completely in the casing with a linear movement following a force exerted axially on the same, and to be able to retract at last partially in the casing with an oblique movement following a transverse force exerted on the same.

The invention relates to a forging press, in particular a free-form forging press, for forging a tubular workpiece (1), the forging press comprising: - a press frame, - a mandrel (2) which is arranged in or on the press frame and on which the workpiece (1) to be deformed is positioned or is to be positioned, - wherein the mandrel (2) is conical at least in some regions and has at least one contact surface (3) inclined with respect to the mandrel axis (D), - a forging saddle (4) which can be moved in a main pressing-force direction (R) towards the mandrel (2) and the workpiece (1) positioned on the mandrel (2), and by means of which a pressing force (Fp) oriented in the main pressing-force direction (R) can be applied to the workpiece, wherein, due to the inclined contact surface (3) of the mandrel (2), the pressing force (Fp) results in a transverse force (Fq) oriented transversely to the main pressing-force direction (R). The press is characterised in that the forging saddle (4) has a shoulder (6) comprising a support surface (7) which is preferably oriented parallel to the main pressing-force direction and against which the mandrel (2) can be supported such that the transverse force (Fq) is transmitted into the shoulder (6) and thereby absorbed by the forging saddle (4).

The present application relates to the field of prefabricated subway station structural engineering. Specifically disclosed is a buffer vibration isolation device for connecting station structure beams and columns, comprising: a base plate and a frame, wherein the base plate and the frame are respectively provided in two pieces, and the frame is provided at the top of the base plate; a cross bar, wherein a plurality of the cross bars are respectively installed at the top of the two base plates and located on the inner sides of the two frames, and a plurality of rectangular through slots are provided on the cross bars; a longitudinal bar, wherein a plurality of the longitudinal bars respectively pass through a plurality of the rectangular through slots; when the cross beam is subjected to a lateral force, the baffle moves in the shell, the fourth spring stabilizes the deformation and buffers by fitting with the cylinder, the first elastic member and the second elastic member cooperate through an inclined surface or a protrusion to evenly distribute the transmission force, cooperate in buffering, effectively reduce the impact vibration of the beam-column connection when subjected to bidirectional forces in the longitudinal and transverse directions, ensure the stability and reliability of the structure, extend the service life of the device and maintain the safe and stable operation of the structure.

A force exerted on a distal end of an elongate medical device can be determined. A graphical representation of the distal end of the elongate medical device and a graphical representation of the force exerted on the distal end of the elongate medical device can be computed. The graphical representation of the force can emanate from the graphical representation of the distal end of the elongate medical device. A first dimension of the graphical representation of the force can be increased in response to a longitudinal force being exerted on the distal end of the elongate medical device. A second dimension of the graphical representation of force can be increased in response to a lateral force being exerted on the distal end of the elongate medical device.

A medical device includes a blade support, a blade supported by the blade support, and a pin. The blade support includes a bore with an inner portion oriented toward the blade and an outer portion oriented away from the blade. A discontinuity is located at a boundary between the inner and outer portions of the bore. The pin includes a longitudinal axis and a yaw plane is defined perpendicular to the longitudinal axis. A rotational yaw degree of freedom is defined about the longitudinal axis of the pin. The blade support is operable to rotate about the pin in the yaw degree of freedom, contact the pin at the discontinuity of the bore, and tilts away from the yaw plane at the discontinuity of the bore in response to a force applied in a lateral direction.

The utility model relates to the technical field of building quality detection, in particular to a double-wheel horizontal force coefficient tester installation and adjustment levelness instrument, which comprises a suspension assembly, the suspension assembly comprises a height adjusting piece and a connecting beam, the end part of the connecting beam is provided with a connecting plate, and the height adjusting piece is connected with the connecting plate; the wheel assembly is arranged at the end, away from the height adjusting piece, of the connecting beam, the wheel assembly comprises a friction wheel and a distance testing wheel, and the friction wheel and the distance testing wheel are distributed in a triangular shape; the balancing weight is arranged above the friction wheel, and the balancing weight is fixedly connected with the connecting beam; the gradienter is arranged on the balancing weight, the gradienter is used for observing the horizontal state of the whole device, and the gradienter is fixed to the upper portion of the balancing weight through a fixing piece. According to the utility model, the horizontal calibration of the double-wheel type transverse force coefficient tester can be rapidly and accurately realized.

The invention relates to a rivet punch (10) and to a method and a device (1) for a wobble riveting process for fastening anchors (3) to a C-profile rail (5) of an anchor rail (4). According to the invention, a riveting surface (18) of the rivet punch (10) is provided with a spherical elevation (19) in the center of the riveting surface. During a wobble riveting process, the spherical elevation (19) of the riveting surface (18) of the rivet punch (10) rests perpendicularly and within a circumferential edge of the end face on an anchor shaft (6), whereby a circular anchor head (28) is formed which has a uniformly radial shape in all directions and transverse forces during the wobble riveting process are avoided.

Support structure in the form of an assembly forming an assembly unit for supporting a functional unit, with a support base which has at least two receiving areas spaced apart from one another in a spacing direction a receptacle for anchoring a support part having a shaft body which is elongated in an axial direction, and with at least two such support parts which, in the assembled state of the assembly, are anchored in the receptacles on an axial side of their shaft body and project towards the side of their other end from the respective axial height level of the receiving areas in the axial direction by a projecting length dimension in order to support the functional unit at a height level of this receiving area in the axial direction by a possiblyto be able to support a holding level spaced apart from the support distance extending up to the projecting length dimension, wherein the anchoring-side end of the shaft body is at a depth below the receiving area height level and wherein the anchoring is of the type of the boundary condition of a walled-in beam with respect to transverse forces introduced, for example, at the level of the holding level by the functional unit into a support part and having a force component in the distance direction, with an increase in the elastic compliance of the support structure with respect to such transverse forces caused by a level of the boundary condition being axially lowered by a lowering depth compared to the receiving area height level.

The present application relates to the technical field of bridge safety evaluation, and particularly relates to a hollow slab hinge joint damage evaluation method, device and computer equipment. The method comprises the following steps: obtaining deflection transverse distribution measured curves and deflection transverse distribution theoretical curves of hollow slabs under the same stress state; according to the relationship between the deflection transverse distribution theoretical value and the deflection transverse distribution correction value, and based on the hinge joint transverse force transmission coefficient between every two hollow slabs, a deflection transverse distribution correction model is established; according to the deflection transverse distribution correction model, when the curve formed by the deflection transverse distribution correction value and the deflection transverse distribution measured curve are within the set range, the hinge joint transverse force transmission coefficient between every two hollow slabs is determined. The problem that the existing technology cannot quantitatively evaluate the force transmission performance of each hinge joint, so as to be unable to judge the damage of each hinge joint, and leading to the complexity of maintenance judgment can be solved.

A force exerted on a distal end of an elongate medical device can be determined. A graphical representation of the distal end of the elongate medical device and a graphical representation of the force exerted on the distal end of the elongate medical device can be computed. The graphical representation of the force can emanate from the graphical representation of the distal end of the elongate medical device. A first dimension of the graphical representation of the force can be increased in response to a longitudinal force being exerted on the distal end of the elongate medical device. A second dimension of the graphical representation of force can be increased in response to a lateral force being exerted on the distal end of the elongate medical device.

A computer-implemented method for adjusting a force center or a transverse force of a coil spring (34) during cold winding with a cold winding machine (20) is disclosed, comprising the following steps: - Determining a geometry of the coil spring (34) during cold winding - estimating, based on the determined geometry, a deviation of the center of force or the transverse force of the formed coil spring (34) using a set forming parameter of the cold coiling machine (20) with respect to a predetermined center of force or a predetermined transverse force; - Adjusting the set forming parameter of the cold coiling machine during the forming of the coil spring if the deviation is greater than a specified threshold value.

The application discloses a swing roller hydraulic machine with anti-lateral load structure, mainly comprising a pull rod, a lock nut, an upper cross beam, a hydraulic cylinder, a variable cross-section column, a sliding block, a transverse lock nut, a transverse adjusting nut, a transverse pull rod, a workbench, an auxiliary anti-deviation sliding block, a column connecting beam, an auxiliary anti-deviation beam and the like. The application specially designs a high-rigidity variable cross-section column, a transverse force transmission mechanism and an auxiliary anti-deviation mechanism aiming at the horizontal transverse strong deviation load force generated in the swing roller forging process, so as to improve the anti-lateral deviation load capacity and the overall stability of the swing roller hydraulic machine body, improve the swing roller die rigidity, and further improve the swing roller forging process level.

The invention belongs to the technical field related to master-slave control of medical equipment, and discloses a puncture needle track prediction and master-slave control method based on force measurement, which comprises the following steps of: (1) measuring bending moment and transverse force in two orthogonal planes of a puncture needle tail end coordinate system and axial force along a puncture needle in real time; (2) calculating to obtain a simulation load loaded on the interaction part of the puncture needle and the soft tissue; (3) respectively solving the predicted positions of the puncture needle on the two corresponding orthogonal planes; and (4) the predicted position and the expected position are subtracted, the obtained difference value is multiplied by a proportionality coefficient to obtain two pieces of force sense information, then the two pieces of force sense information and the axial force are transmitted to the master-end operation equipment, the master-end operation equipment carries out force sense reproduction according to the received information, the force sense information serves as an operation instruction of an operator to the slave-end robot, and the operation instruction of the operator to the slave-end robot is completed. And the attitude of the slave end robot is controlled to reduce the difference value between the predicted position and the expected position. According to the invention, the real-time performance is improved.

The invention discloses a multi-axis synchronous fatigue and limit mechanical property testing device. The device comprises a supporting frame, a vertical force application device, a circumferential force application device, a transverse force application device and a test piece clamping device. The vertical force application device is arranged along the vertical direction and is used for applying a vertical compression load; the circumferential force application device is horizontally arranged and comprises a circumferential actuator, two sets of rolling combination devices and a circumferential limiting device, and the two sets of rolling combination devices are clamped on the two opposite sides of the test piece respectively to apply circumferential compression loads; the transverse force application device is perpendicular to the circumferential force application device and is used for applying a transverse bending load; and the test piece clamping device is fixed on the ground. Synchronous triaxial loading can be carried out on the structural test piece, the stress characteristics of the ultra-deep diving structure under the extreme load condition are truly simulated, the structure is compact, loading of all axes does not interfere with one another, and structural nodes manufactured through a real welding process can be examined.

The utility model provides a rail clamping type force sensor integrated fixture which comprises a main support, an auxiliary support and a shearing force sensor fixedly installed on the side wall of the main support, the main support and the auxiliary support are detachably connected to the two sides of a steel rail through bolts, and transverse force strain holes are formed in the side wall of the main support. A resistance strain gauge is pasted in the transverse force strain hole, the resistance strain gauge can convert transverse deformation of the steel rail into an electric signal, and a strain amplification groove is formed in the upper side of the transverse force strain hole; according to the utility model, the transverse force strain holes are arranged on the main support, so that the shape of the clamp is consistent with that of a common shear force sensor clamp at present, and normal use of a shear force sensor is ensured; the resistance strain gauges are arranged in the transverse force strain holes, and the transverse force measurement module is integrated into the clamp of the shear force sensor, so that integration of shear force and transverse force measurement functions is realized, and the problems that a two-dimensional force plate type sensor needs to replace a sleeper, and is large in size and heavy in weight are solved.

The invention discloses a turnout frog area wheel rail acting force continuous measurement method. The method comprises the steps that a shear force and pressure composite measurement area foundation frame is constructed; determining a monitoring range and measuring point arrangement of a turnout frog area; constructing a sensor arrangement scheme of shearing force measurement points of the asymmetric structure section of the frog area, and calculating a synthetic shearing force value of the shearing force measurement section based on the sensor arrangement scheme of the shearing force measurement points; constructing a sensor arrangement scheme of the frog area pressure measurement points, installing base plate type pressure sensors at fastener node positions corresponding to the frog area pressure measurement points, and calculating vertical force based on the sensor arrangement scheme of the frog area pressure measurement points; constructing a sensor arrangement scheme of a transverse force measuring point of the frog area, which comprises the following steps of: realizing transverse force measurement at an iron base plate measuring point by utilizing a modified base plate type pressure sensor; and continuously measuring and calculating the frog area wheel-rail acting force based on the synthesized shear force value, the vertical force and the transverse force. The invention further discloses a corresponding system, electronic equipment and a computer readable storage medium.

The invention relates to a method for controlling at least one linear motor (2, 14) for a transport system (1), the at least one linear motor (2, 14) having a plurality of coils (5a, 5b, 5c, 15a, 15b, 15c), and the transport system (1) having a transport slide (4) having a plurality of magnets (7a, 7b, 7c, 7d) on at least one side (6a), the at least two magnets (7a, 7b, 7c, 7d) having different magnetic polarities from each other, the transport slide has a return element (8), in particular a back iron element, and wherein the control device (3) controls the at least one linear motor (2, 14) in such a way that a longitudinal force (12b, 13b, F1L, F2L) is applied to the transport slide (4) in the longitudinal direction of the linear motor (2, 14) in order to cause a linear movement (L) of the transport slide (4) in the longitudinal direction. The method is characterized in that the control device (3) controls the at least one linear motor (2, 14) in such a way that a transverse force (12a, 13a, F1Q, F2Q) perpendicular to the longitudinal force (12b, 13b, F1L, F2L) is applied to the transport slide (4) in order to cause a transverse movement of the transport slide (4) towards the coil (5a, 5b, 5c, 15a, 15b, 15c) or away from the coil (5a, 5b, 5c, 15a, 15b, 15c), the field change current (IQ) having a value of zero when the transverse movement of the transport slide (4) is caused.

The invention relates to a forging press, in particular a free-form forging press, for forging, in particular free-form forging, a tubular workpiece, the forging press comprising: - a press frame, - a slide beam which can be moved in or on the press frame, - a mandrel (2) which is arranged in or on the press frame and on which the workpiece (1) to be deformed is positioned or is to be positioned, - wherein the mandrel (2) is conical at least in some regions and has at least one contact surface (3) inclined with respect to the mandrel axis (D) - a forging tool (4) which can be moved in a main pressing-force direction (R) towards the mandrel (2) and the workpiece (1) positioned on the mandrel (2) and by means of which a pressing force (FP) oriented in the main pressing-force direction (R) can be applied to the workpiece (1), wherein, due to the inclined contact surface (3) of the mandrel (2), the pressing force (FP) results in a transverse force (FQ) oriented transversely to the main pressing-force direction (R). The press is characterised in that the forging tool (4) is mounted on and guided on or in support brackets (6) along the main pressing-force direction in such a manner that the transverse force introduced into the forging tool (4) is transmitted into the support bracket(s) and absorbed thereby.

The invention relates to a surgical instrument with an instrument handle, an instrument shank connected to the instrument handle, an instrument tip with a work point, which instrument tip is connected to the instrument shank, and a first locator arranged on the instrument handle or the instrument shank. During a use of the surgical instrument, the instrument shank can be deflected, e.g. on account of transverse forces, at least between the first locator and the work point. A second locator is arranged at a distance from the first locator and, by comparison with the latter, closer to the work point, wherein the second locator is designed to detect five degrees of freedom.

The utility model discloses a hinge mechanism, which is used for connecting a movable part and a fixed part and comprises a plurality of outer hinge components, a plurality of inner hinge components and a hinge shaft, the outer hinge assembly comprises an outer hinge shaft sleeve and an outer hinge fastener which are fixedly connected, and the inner hinge assembly comprises an inner hinge shaft sleeve and an inner hinge fastener which are fixedly connected; the outer hinge fastener is fixed with the movable part, and the inner hinge fastener is fixed with the fixed part; the hinge shaft penetrates through the outer hinge shaft sleeves and the inner hinge shaft sleeves, and the outer hinge shaft sleeves and the inner hinge shaft sleeves rotate around the hinge shaft. According to the hinge, the integral structural design that the hinge shaft penetrates through all the hinges is adopted, so that the transverse force needing to be borne by the movable part of a product acts on the whole hinge shaft, the bearing force does not act on the single hinge, and the problems of quality and potential safety hazards caused by unbalanced bearing of the single hinge are solved; and through the integrated structural design, the appearance style is unified, and the integrality is higher.

The utility model provides a clamping rail type force sensor integrated fixture which comprises a first fixture and a second fixture. The first clamp and the second clamp are detachably connected and are fixed on the outer side wall of the steel rail; a mounting hole is formed in the first clamp, and a transverse force sensing assembly is movably mounted in the mounting hole; a balance pressing plate is arranged between the transverse force sensing assembly and the steel rail to be detected. The balance pressing plate is relatively clamped through the first clamp and the second clamp and is pressed on the outer side wall of the steel rail by the transverse force sensing assembly; the balance pressing plate and the transverse force sensor assembly are fixed through a balance shaft. Shearing force sensors are respectively mounted at two ends of the balance pressing plate; according to the utility model, the measurement of transverse force and vertical force is simultaneously realized by using one set of device, the original shear force sensor and two-dimensional force sensor are replaced, a special sleeper does not need to be replaced, and the construction period is shortened; and compared with the scheme that each sensor independently uses a set of fixture at present, the number of used fixtures is effectively reduced, and the installation workload is reduced.

A sidewall balance system and method for measuring bionic flexible skin wings belong to the field of aerodynamic wind tunnel test technology, and are intended to comprehensively and effectively identify the aerodynamic performance gain effect of bionic flexible skin lift-increasing and drag-reducing wings. The sidewall balance system includes a sidewall balance, which is installed in the side wall of the test section. The sidewall balance includes a floating plate and a fixed plate. The floating plate and the fixed plate are connected by three lateral force units, two longitudinal force units and one transverse force unit. Each force measuring unit includes a tension-compression balance, and the model under test is connected to the floating plate through a low heat flux insulation flange. The present invention proposes an assembled sidewall balance system of tension-compression balances. Compared with the cantilever beam sidewall balance, the present invention has an improved overall stiffness and greatly reduced interference between components. Combined with the original measurement method, the various element forces and moments of the bionic flexible skin wing wind tunnel test can be accurately obtained.

The utility model discloses an automatic calibration device for a six-dimensional force sensor, which comprises a calibration test bench, a sensor to be calibrated is mounted on the calibration test bench, a loading cover is mounted on the sensor to be calibrated, and seven supporting seats are distributed on the calibration test bench. The arrangement positions of the seven supporting seats correspond to the position directions of the transverse force, the longitudinal force, the vertical force, the transverse torque, the longitudinal torque and the vertical torque of a sensor to be calibrated respectively, each supporting seat is provided with a servo motor, and an output shaft of each servo motor is connected with a rotating shaft sleeve; according to the utility model, the automatic, rapid and accurate calibration of the sensor is realized, and the servo motor is adopted to provide a pulling force for the sensor to be calibrated, so that the stability of force application is improved, the efficiency of a sensor calibration experiment is greatly enhanced, the calibration frequency range of the six-dimensional force sensor is enlarged, and the influence of environmental factors on the pulling force application is reduced.

The invention relates to a connection device (1) for the preferably transversely force-locking connection of concrete components, in particular concrete precast elements, comprising an elongate storage box (10) for access to the component end side, which storage box has a base (12) and at least two side walls (14, 16) extending in the longitudinal direction of the base, at least one flexible reinforcement ring element (2) which can be accommodated in the storage box (10) and can be deflected out of the storage box, the base (12) defining at least one through-opening (20) with an edge (22), through which the reinforcement ring element (2) extends, characterized in that the reinforcement ring element (2) engages at least two engagement points (22a, 22b) of the edge, at least one first engagement point (22a) having a greater distance from the extension plane of the base (12) than at least one second engagement point (22b).

The invention relates to a toothed belt overload protection disc (1) for attachment to a toothed belt pulley (2) of a bicycle (4), wherein the toothed belt overload protection disc is designed to elastically deform by less than 1.5 mm in the direction of the transverse force when a transverse force (18) of 15 N acts on the toothed belt overload protection disc perpendicular to a plane (16) spanned by the toothed belt overload protection disc. Furthermore, a toothed belt pulley (2) with such a toothed belt overload protection disc is proposed. The invention also relates to a belt drive (68) for a bicycle, with a toothed belt pulley according to the invention, and to a bicycle with a toothed belt overload protection disc and / or toothed belt pulley according to the invention. The means according to the invention prevent sudden toothed belt tears.

The invention relates to electrosurgical bipolar forceps (10), comprising: a first limb (12) and a second limb (14), which are pivotally mounted on each other by means of a pivot joint (16); and a stabilizing device (44) for stabilizing the forceps (10) against transverse forces, the stabilizing device (44) having a connecting rod (46) mounted on the proximal side of the pivot joint (16), and the connecting rod (46) having a first bearing structure (48), which is mounted displaceably and rotatably on the first limb (12), and a second bearing structure (50), which is rotatably mounted on the second limb (14).