Abstract: A pivot joint includes a first joining part, a second joining part and a coupling part pivotally connected with one another, the second joining part being disposed between the first joining part and the coupling part, a latch carried with the second joining part, and a linking mechanism configured to couple the latch to the first joining part so that a rotation of the first joining part relative to the second joining part in a first direction causes the latch to disengage from the coupling part for rotation of the second joining part relative to the coupling part, and a rotation of the first joining part relative to the second joining part in a second direction causes the latch to engage with the coupling part to prevent rotation of the second joining part relative to the coupling part. Moreover, a child stroller apparatus is also described herein.

Abstract: Embodiments of the present disclosure provide a surgical robot system may include an end-effector element configured for controlled movement and positioning and tracking of surgical instruments and objects relative to an image of a patient's anatomical structure. In some embodiments the end-effector may be tracked by surgical robot system and displayed to a user. In some embodiments the end-effector element may be configured to restrict the movement of an instrument assembly in a guide tube. In some embodiments, the end-effector may contain structures to allow for magnetic coupling to a robot arm and/or wireless powering of the end-effector element. In some embodiments, tracking of a target anatomical structure and objects, both in a navigation space and an image space, may be provided by a dynamic reference base located at a position away from the target anatomical structure.

Abstract: A rotatable fishing rod handle device with adjustable bending and straightening includes a handle body, a wheel seat and a connecting rod, wherein a front end portion of the handle body is provided with a mounting hole inwardly. A rear end portion of the wheel seat is provided with a coupling shaft. The coupling shaft is located and rotatable in the mounting hole. A shaft body of the coupling shaft is provided with a groove, in which a latch protrusion and a spring are disposed. An end of the latch protrusion protrudes outward to a notch of the groove and the latch protrusion is elastically disposed in the groove through the spring. A first position limiting hole is formed at a position corresponding to the groove on the coupling shaft on a side wall of the handle body.

Abstract: The present disclosure provides an unmanned flight system and a control system for an unmanned flight system. The unmanned flight system comprises: a body and a lift mechanism connected to the body, wherein the lift mechanism includes two rotor assembly arm structures respectively provided on two sides of the body, wherein each of the rotor assembly arm structures respectively includes: an arm, a pivotable rotor assembly, a motor for driving the rotor assembly to pivot about a pivot axis, and a motor base for mounting the motor, wherein one end of the arm is pivotally connected to one side of the body, the motor base is pivotally provided on the other end of the arm, and a rotational axis of the motor base is higher than a center of gravity of the unmanned flight system. The unmanned flight system according to the present disclosure can achieve a longer flight time, a simple rotor assembly structure, and easier overall assembly and maintenance.

Abstract: A child stroller apparatus includes a standing frame, a push handle frame having a side segment, the side segment being pivotally connected with the standing frame via a pivot connection, an adapter having a coupling portion configured to receive the installation of a detachable part, the adapter being fixedly connected with a handle, the handle having a cavity through which is slidably disposed the side segment so that the handle and the adapter are slidable in unison along the side segment for adjustment, and a locking mechanism for locking the adapter in position on the side segment, the locking mechanism including a release actuator exposed on the handle for operation, the release actuator being operable to cause the locking mechanism to unlock for sliding adjustment of the handle and the adapter along the side segment.

Abstract: Described herein is a video laryngoscope apparatus for inspection of an oral cavity region of a patient is disclosed. The video laryngoscope includes an apparatus body, a camera arm unit configured to receive and releasably attach thereto a disposable laryngoscope blade, a light source coupled to the camera arm unit, a communication unit, and a power source. The apparatus body includes a proximal end and a distal end, and the apparatus body is elongate and configured to be hand-held by an operator of the video laryngoscope. The camera arm unit includes a proximal end and a distal end with a camera, and the proximal end of the camera arm unit is connected to the distal end of the apparatus body utilizing an adjustable rotary position linkage member. The communication unit is connected via a linkage device to the proximal end of the apparatus body, and the power source is housed by the apparatus body.

Abstract: A child stroller apparatus includes a stroller frame and a stroller seat. The stroller seat includes a backrest portion fixedly connected with a first joining part, a seat portion fixedly connected with a second joining part that is pivotally connected with the first joining part, a coupling part pivotally connected with the second joining part at a side thereof opposite to that of the first joining part and adapted to connect with the stroller frame, a latch movable between a locking position engaged with the coupling part and an unlocking position disengaged from the coupling part, and a linking mechanism configured to movably couple the latch to the first joining part so that the backrest portion is rotatable in a folding direction to cause the latch to disengage from the coupling part and in an unfolding direction to cause the latch to engage with the coupling part.

Abstract: A locking mechanism includes: a mounting housing; a shaft sleeve rotatably arranged on the mounting housing and having an inner wall provided with a first snap structure; a locking assembly, at least a part of the locking assembly being movably arranged in the shaft sleeve, and the locking assembly being provided with a second snap structure cooperating with the first snap structure; and a driving member, at least a part of the driving member being movably arranged on and passing through the mounting housing, wherein the driving member is in driving connection with at least a part of the locking assembly, and the driving member drives the second snap structure to be snapped with or separated from the first snap structure.

Abstract: Described are modular leg assemblies for passenger seats. The modular leg assemblies can include a universal first leg member, a universal second leg member, a size specific member, and a universal seat frame tube receptor. The universal first leg member may be coupled to a first seat track fitting. The universal second leg member may be coupled to a second seat track fitting. The size specific member may be coupled to the universal first leg member and to the universal second leg member. At least one of the universal second leg member or the universal seat frame tube receptor can include a set of attachment points for coupling the universal seat frame tube receptor to the universal second leg member.

Abstract: Described are base frame assemblies for a passenger seat having an elongated tube and a connector. The elongated tube may include an inner surface, an outer surface, and a connecting aperture extending from the inner surface to the outer surface. The connector may include a first end, a second end, a central opening extending from the first end to the second end, a first stopper at the first end, a second stopper proximate to the second end, a contact surface between the first stopper and the second stopper, and an adjustment slot defined as extending from the first end to the second end. The connector may be positioned within the connecting aperture such that a portion of the elongated tube contacts the contact surface between the first stopper and the second stopper that may together overlap a portion of the inner surface and outer surface of the elongated tube.

Abstract: Jigs and fixtures for aligning, guiding, and/or holding a workpiece on woodworking machinery during a woodworking operation are described, as well as methods of making, modifying, and using jigs and fixtures.

Abstract: A dual purpose prosthetic foot system enables a person to use the same prosthetic to either walk or swim. The foot part is joined at the ankle and can be locking in either a walking position or a swimming position. The foot allows common swimming equipment such as flippers to be attached.

Abstract: A preloaded resistance pack and exercise device. The resistance pack includes an elastomeric resistance element coupled to a hub and disposed on a plate. The hub includes a pair of radially extending wings that lie against a surface of the plate. The plate includes a pair of raised tabs that lie within a rotational path of the wings. An initial rotation of the hub relative to the plate causes the wings to slide over and beyond the raised tabs and at least partially stretches the resistance element. Interaction between the tabs and wings prevents the hub from rotating back to an initial position and maintains the resistance element in a preloaded, tensioned condition. The exercise device is configured to detect a number of the resistance packs coupled thereto as well as data associated with exercise movements employing the resistance packs.

Abstract: Methods, apparatus, systems, and computer-readable media are provided for avoiding and/or operating robots through singularities. In various implementations, a Cartesian input velocity to be attained by a robot end effector may be received as user input. An attainable velocity of the end effector may be determined that excludes at least one directional component deemed unattainable by the end effector based on physical attribute(s) of the robot. Joint velocities to be attained by joints of the robot in joint space to move the end effector pursuant to the attainable velocity in configuration space may be calculated and scaled to account for a joint velocity limit associated with at least one joint. Actuator trajectories may be calculated for the joints of the robot based at least in part on the scaled joint velocities. The joints of the robot may then be operated in accordance with the calculated joint trajectories.

Abstract: A pivot mechanism for a vehicle external rear view mirror assembly is disclosed. The mechanism includes: a base frame portion and a case frame portion mounted to the base frame portion for rotation about a pivot axis. A detent is operable between the base frame portion and the case frame portion. A spring mechanism clamps the case frame portion to the base frame portion and includes a compression spring disposed around the axis and a spring tie. The spring has first and second tie ends spaced apart from each other and connected by a tie shaft. The tie shaft passes through the spring. The spring tie shaft includes a spring tie reaction feature, whereby in a deployed position, a torque applied to the case frame portion about an axis orthogonal to the axis by an external force is resisted by the spring tie reaction feature.

Abstract: A wire feeder includes a tensioner with a discrete number of compressive force settings for applying a desired compressive force to welding wire fed through the wire feeder is provided. The tensioner includes an adjustment knob with a discrete number of detents disposed along a helical surface adjacent an inner bore of the adjustment knob. The tensioner also includes a pin extending from an end of a tensioning post located in the inner bore, the pin being configured to align with the detents of the adjustment knob. Rotation of the adjustment knob adjusts alignment of the pin among the discrete number of detents, which correspond to the discrete number of compressive force settings.

Abstract: A modular tooling apparatus having serrated teeth for providing orbital and linear adjustment of a modular tool. The modular tooling apparatus includes a mounting member and a base coupling having mating contoured surfaces for providing linear adjustment of the base coupling relative to the mounting member. A spacer is provided having contoured surfaces wherein the contoured surfaces matingly and adjustably connect to a contoured surface of the base coupling for rotational adjustment of the modular tool about a longitudinal axis. The modular tool has a contoured surface that matingly and adjustably connects to the contoured surface of the spacer for rotational adjustment about the longitudinal axis. A biasing member engages the spacer and the modular tool for biasing the spacer toward the base member and away from the modular tool.

Abstract: A retention and rotation assembly includes a first support having a first bore that extends along an axis AA. A lug is received in the first bore and is rotatable relative to the first support about the axis AA. The assembly includes a second support having a second bore. An inside surface of the second bore is engageable with an outside surface of the lug, the second support is fixed relative to the lug about the axis AA when second support is engaged with the lug. A locking element extends through a bore in the lug and into at least a portion of the second support. A rotation of the locking element in a first direction about the axis AA increases a friction between the lug and the first support thereby inhibiting rotation of the lug relative to the first support about the axis AA.

Abstract: A retention and rotation assembly includes a first support having a first bore that extends along an axis AA. A lug is received in the first bore and is rotatable relative to the first support about the axis AA. The assembly includes a second support having a second bore. An inside surface of the second bore is engageable with an outside surface of the lug, the second support is fixed relative to the lug about the axis AA when second support is engaged with the lug. A locking element extends through a bore in the lug and into at least a portion of the second support. A rotation of the locking element in a first direction about the axis AA increases a friction between the lug and the first support thereby inhibiting rotation of the lug relative to the first support about the axis AA.

Abstract: An adjustable friction joint assembly for a crash test dummy includes a first joint member for connection to a first member of the crash test dummy and a second joint member for connection to a second member of the crash test dummy. The adjustable friction joint assembly also includes a shaft operatively connected to the first joint member and the second joint member to allow rotation therebetween. The adjustable friction joint assembly further includes an adjustable friction assembly operatively connected to the shaft and operatively cooperating with the first joint member and the second joint member to adjust a friction tightness of the joint assembly.

Abstract: A rotary coupling having first and second mounting interfaces. The rotary coupling also having a rotary joint rotatably connecting the first and second interfaces in preselected rotational orientation, wherein the rotary joint has selectively engageable redundant engaging means for interengaging the first and second interfaces for maintaining a preselected one of a plurality of alternate rotational orientations. According to one embodiment, the selectively engageable redundant engaging means of the rotary coupling further includes a plurality of interengageable detents.

Abstract: A support arrangement for a solar module includes a post having a first surface section. A support structure includes a connecting element presenting a second surface section facing the first surface section in a direction of a joint surface normal of the first and second surface sections. A stop element is arranged in the surface normal direction offset to the first and second surface sections. A first form-fitting connection exists between the stop element and the post and a second form-fitting connection exists between the stop element and the connecting element, providing vertical support of the connecting element relative to the post. The first and second form-fitting connections are producible at different heights of the connecting element relative to the post. A fastening element holds in place the first surface section and the second surface section relative to each other in the direction of the joint surface normal.

Abstract: The present invention relates to an adapter for connecting an auxiliary handle to a hand-held power tool and which includes an adapter body, which is connectable to the hand-held power tool, and an adjusting guide, which is attached to the adapter body such that it is movable relative thereto, and wherein the auxiliary handle is connectable to the adapter body by means of the adjusting guide and the adjusting guide is capable of fixing the auxiliary handle on the adapter body in different positions relative to this same structure.

Abstract: A connection between two adapter parts of a supporting apparatus is constructed in a modular manner for supporting tools, workpieces or the like. Each adapter part has an attachment, and a connecting clip engages behind the attachments, which are positioned facing one another, and fixes the attachments to one another in an axial and radial manner, as well as a device for fixing the attachments to one another in a non-rotatable manner. The device for fixing the attachments to one another in a non-rotatable manner has a positive locking part that is arranged between the two attachments and engages in the two attachments in a positive locking manner for the non-rotatable fixing. The connection provides a sturdy connection between two adapter parts developed in an essentially standardized manner with a small number of individual parts.

Abstract: In a tool attachment having an attachment housing on which a fastening interface is situated for fastening to an handheld machine tool, the fastening interface having an angular position setting unit for setting a specified angular position of the tool attachment on the handheld machine tool, and being equipped with a locking unit which, in a locked state, locks the tool attachment for operation on the handheld machine tool in the specified angular position, and, in the unlocked state, makes possible drawing the tool attachment away from the handheld machine tool, the angular position setting unit is operable in the locked state of the locking unit, to enable a change in the specified angular position.

Abstract: An adjustable connector for elongated members is provided having a mount attached to a first elongated member, such as a chair support, and a tubular arm assembly pivotally connected to the mount and attached to a second elongated member, such as an umbrella or flag. The arm assembly is selectively positioned in relation to the mount by adjusting pegs that extend from the arm assembly and engage receivers in the mount. A tubular cam within the arm assembly is connected to a tubular sleeve on the exterior of the arm assembly. The sleeve is slid toward the mount causing the cam to disengage the pegs from the mount receivers permitting repositioning of the arm assembly from a position adjacent to the mount, through perpendicular to a position parallel to the mount. The connector may be collapsed and remain connected to the elongated members when not in use.

Abstract: A foldable bracket of a chair contains a positioning rod, a first rotating rod, a connector, a second rotating rod, and a supporting plate. The positioning rod is connected with the chair. The first rotating rod is rotatably coupled with the positioning rod. The connector is joined with the first rotating rod. The second rotating rod is rotatably coupled with the connector, and the supporting plate is connected to the second rotating rod.

Abstract: A tilter for a stand, in particular a cymbal stand, comprises two elements being movable relative to each other, a connecting means connecting the moveable elements to each other, a locking means for reversibly fixing the position of the movable elements with respect to each other, as well as at least one friction means arranged between the movable elements. In a fixed position of the locking means, the friction means is in frictional contact with a peripheral surface of at least one of the movable elements.

Abstract: A luggage connector that may be used with a baby stroller or wheelchair to transport rolling luggage is disclosed. In a particular embodiment, the connector includes a first arm and a second arm. Clamps are disposed at a distal end of each arm. The clamps are used to secure the connector to a handle of luggage and a portion of a frame such as a stroller or wheelchair frame. Each arm is adapted to rotate about a central axis so that each respective clamp may be rotated and positioned appropriately to secure the connector to the frame. In addition, a rotating hinge is provided to adjust to a desired angle between the two arms to accommodate the connector being secured to the frame and rolling luggage.

Abstract: A method and apparatus for attaching a toolbar with at least one mounted stem deflector to a combine head. The apparatus includes at least one head bracket that attaches to the combine head. The apparatus also includes at least one rotatable member that couples to the toolbar. A position of the at least one rotatable member is adjustable relative to the combine head. The apparatus also includes an actuator that adjusts the position of the at least rotatable member relative to the combine head.

Abstract: A system of folding mechanical components comprises a bearing ball, a stationary body defining at least one concave recess sized to receive at least a portion of the bearing ball, a rotatable body rotatably coupled to the stationary body and one or more button members. The rotatable body defines two channels therein, and one or more button members are sized to be disposed in the channels. Each button member defines a recess with a rounded concave portion sized to receive at least a portion of the bearing ball. In a locked position the bearing ball contacts the sloped recess of the stationary body. In an unlocked position the bearing ball contacts the rounded concave portions of the button members and has relatively more contact with the concave recess of the stationary body.

Abstract: The invention relates to a link chain having two or more rows of chain elements, wherein the chain elements of one row are rotatably connected to those of the adjacent row in the chain plane in such a way that each chain element has two rotational axes, of which in each case one of the two rotational axes belongs to two different chain elements in adjacent rows, and that the chain elements of one row are connected to one another by means of toothed devices at their ends in such a way that the chain is flexible in the chain plane. The chain elements at one end of the link chain are likewise provided, at their outer side, with a toothed device, which is in engagement with an actuator. The actuator is a pneumatic actuator, a hydraulic actuator, an electromotive actuator or a manual drive actuator. The actuator may have a latching fitting, wherein the latching fitting is provided with a toothed surface that is in engagement with a toothed surface of a chain element in one row.

Abstract: An apparatus for adjusting the length of a tension tie mounted on a deployable antenna based on a cable network structure includes a cable retainer provided with a retaining hole, a cable being connected to the cable retainer; a retaining case coupled to the outer periphery of the cable retainer and provided with a plurality of retaining holes; and a retainer positioned inside the cable retainer and configured to extend through the retaining hole of the cable retainer and through one of the retaining holes of the retaining case so that the cable retainer and the retaining case are prevented from moving in the longitudinal direction.

Abstract: A wrench with a rotatable head comprises a handle and a head, which are connected via a first and a second ends. The first end includes an upper and a lower lugs. A first toothed hole is formed in the upper lug; a hole is formed in the lower lug. A second toothed hole is formed in the second end. The second end is inserted between the upper and lower lugs and the second toothed hole is located between the first toothed hole and the hole. A toothed pillar is movably engaged in the toothed holes. When in the engagement position, the toothed pillar is engaged with the first and second toothed holes to fix the head and the handle. When in the disengagement position, the toothed pillar is disengaged from the teeth of the first toothed hole but still engaged with the teeth of the second toothed hole, so that the head and handle are rotatable with respect to each other.

Abstract: A stroller includes a stroller frame having a mounting frame portion, a support frame connected pivotally to the mounting frame portion for supporting a seat, and a support-frame adjusting device operable to adjust an angle between the support frame and the mounting frame portion. The support-frame adjusting device includes an elongated supporting member disposed pivotally on one of the support frame and the mounting frame portion and having first and second engagement portions, and a positioning member locked releaseably at a selected one of the first and second engagement portions. When released from the selected one of the first and second engagement portions, the positioning member is movable to engage the other one of the first and second engagement portions to thereby change the angle between the supporting member and the mounting frame portion and, thus, the inclination angle of the seat.

Abstract: A connector structure of a music instrument stand includes a first connector and a second connector. Each of the connectors has an annular gear part that matches with each other. A first through hole and a second through hole are formed at the center of the annular gear parts of the two connectors, respectively. A screw is fastened from the first through hole to the second through hole and fixed so that the two connectors can pivotally rotate. Each of the connectors has a groove for the disposition of a bar. A corresponding cover covers the bar and is fixed by a screw and a nut.

Abstract: A foldable stroller has a frame assembly with a frame fold joint and is reconfigurable between an in-use configuration and a folded configuration. A child support structure is repositionable between a usable state on the frame assembly in the in-use configuration and an unusable state not suitable to support a child on the frame assembly. An interlock mechanism cooperates with the child support structure and is movable between a locked state preventing the frame assembly from being folded from the in-use configuration to the folded configuration and an unlocked state permitting the frame assembly to be folded. With the frame assembly in the in-use configuration and the child support structure on the frame assembly in the usable state, the interlock mechanism is retained in the locked state. The interlock mechanism is unlocked when the child support structure is moved to the unusable state.

Abstract: The invention relates to a link chain having two rows of chain elements wherein the chain elements of one row are rotatably connected to those of the adjacent row in the chain plane in such a way that each chain element has two rotational axes, of which each one of the two rotational axes of two different chain elements is in adjacent rows, and that the chain elements of one row are connected to one another by means of toothings of their ends in such a way that the chain is flexible in the chain plane, wherein the rotational axes are designed such that the chain remains in a set position.

Abstract: A foldable stroller has a frame assembly reconfigurable between an in-use and a folded configuration. The frame assembly has first and second frame parts movable between respective in-use positions and folded positions relative to one another that correspond to the in-use and folded frame configurations. A fold joint is connected to both the first and second frame parts and has a joint pivot about which the first and second frame parts pivot relative to one another between the respective in-use and folded positions. A fold link has one end coupled to part of the frame fold joint at a pivot point spaced from the joint pivot and has an opposite end coupled to the first frame part at a connection point spaced from the fold pivot. When the second frame part is pivoted from the in-use position toward the folded position, the fold link drives movement of part of the frame assembly toward the folded frame configuration.

Abstract: A reclining device as a connecting device includes an internal gear member, an external gear member and a retainer member. The retainer member is constructed such that when retainer strips are axially inserted into depressed portions formed in an outer circumferential portion of the external gear member and then insertion distal ends of the support strips are radially inwardly bent to form contact surface portions, the contact surface portions can be axially held against the outer circumferential portion of the external gear member. The external gear member has dowels that are capable of being fitted to a cushion frame, and the dowels are formed circumferentially in locations positioned between the depressed portions (the locations in which projected portions are formed), so as to be axially projected.

Abstract: An easily operable lock device for a movable member of a chair, the lock device being adapted such that a person sitting on the chair can select lock or unlock position by operating operation means with a load, such as the weight of the person, acting on the movable member and, when the load is removed after the selection of the lock or unlock position, lock or unlock operation is executed. A lock pin provided at a spring receiving member functioning as a movable member, is selectively engaged with and disengaged from engagement holes formed in a reinforcement plate functioning as a support member. The lock device has biasing means for biasing the lock pin toward the lock position when an operation member moved by the operation means is set at a lock reservation position and biasing the lock pin toward the unlock position when the operation member is set at an unlock reservation position.

Abstract: Adjustable tools which may be linked through a plurality of couplings connected by links so that the tool and the handle and the links are rotatable relative to each other in a released condition and locked relative to each other in a locked position. The tool, the handle and the links may thus be adjusted to have the tool at any desired orientation to the handle and in a locked position in that orientation.

Abstract: An adjustable support stand for an article such as a camera employs a plurality of elongated links connected to one another at their ends by lockable universal joints. Each joint consists of a pair of complementary knuckles, each joined to a link end by a splined connection, which connections provide two axes of rotation to the joint. The knuckles are joined to one another about a third axis of rotation, perpendicular to the first two axes by means of a splined pin which passes through splined holes in the two knuckles. The splined connections employ splines of different count to achieve a high resolution of possible positions.

Abstract: A rotation support mechanism and a portable terminal having a rotation support function that allows a cover to semi-automatically open from a closed position to an open position in a horizontal or a vertical position, enabling a user to open the cover to a desired open position by one hand and one-touch operation. The rotation support mechanism allows the cover to rotate from the closed position at which a vertically long body and the cover are closed in a superposed manner to the open position at which the cover is stopped after it is rotated by a certain angle in a plane in which the body and the cover are superposed on each other. The rotation of the cover integral with an eccentric cam can be stopped at rotation positions of multiple stages in the horizontal or the vertical position by a pressing means that presses, in the plane, the cam surface of the eccentric cam.

Abstract: An elongate flexible track is flexibly positionable from an initial straight configuration to a non-straight configuration having a horizontal, vertical or compound curvature in which it is lockable with locking elements. The track has a plurality of stud receiving components each being formed with a horizontal base wall having a longitudinal edge and a transverse edge, a side wall on a first side of the track and a side wall on a second side of the track, the side walls extending vertically from respective longitudinal edges of the base wall. The base and side walls define a space in which a stud end of an elongate stud can be mounted. Adjacent stud receiving components are joined by linking elements which include pivot elements about which the linking elements are adjustable in one or more directions. At least one locking elements passage is provided on each side of the track.

Abstract: A clamp system for attaching accessory devices to a railing structure includes a first clamping jaw member and a second clamping jaw member designed to clamp on a railing structure. An accessory mounting device includes a cylindrical collar portion with a plurality of diametrically aligned holes arranged around the circumference. One of the clamping jaw members has an opening, sized to receive the collar portion and one pair of holes that can be aligned with the holes of the collar portion. When the mounting device is in a desired orientation, a pin is inserted through the aligned holes to hold the orientation. A locking nut is mounted on a threaded portion of the collar portion and, when tightened, tends to withdraw the collar portion against the pin, firmly securing the assembly together.

Abstract: A stent is constructed using interconnected links having micro-mechanical latching mechanisms. The micro-mechanical latching elements allow relative rotational movement of interconnected links in one rotational direction but restrict relative rotational movement of the two links in the opposite direction. The micro-mechanical latch surface features are formed using microelectronic mechanical systems (MEMS) manufacturing methods. The male surface of the latching components contains an array of ridges or protrusions, and the receiving surface contains a matching array of recesses. The array of ridges or protrusions and the corresponding recesses have uniformly dissimilar slopes that result in a substantially greater frictional force in one direction than in the opposite direction. The separation distance between the two surfaces is such that the male latch surface is engaged with the receiving surface recesses in the low stress “locked” state, preventing motion in the undesired direction.

Abstract: An adjustable front fork blade for a stroller includes a sleeve, a base movably mounted in the sleeve, and a connecting tube mounted between the sleeve and the base. Thus, the front fork blade has an adjustable length so that when two front fork blades are mounted on a front wheel, the length of each of the two front fork blades can be adjusted to match each other so as to calibrate and center the position of the front wheel, thereby preventing the front wheel from being oscillated or vibrated due to deflection.

Abstract: A curved metal track for receiving a series of metal studs and forming a part of a curved metal wall. The track comprises a plurality of sections with each section being pivotally connected to an adjacent section. Structurally each section comprises a base plate having opposed first and second end portions. Formed in the first end portion is a slit or opening. The second end portion of each section is adapted to be inserted into the slit or opening of an adjacently disposed section. A pivot connector is utilized to pivotally connect the first end portion of one section with the second end portion of another section. There is also provided a pair of opposed stud tabs that extend normal to the base plate and which are adapted to be secured to the sides of a stud. By pivotally connecting the individual sections of the track, the track can be curved and accordingly can be configured to form a part of a curved metal wall.

Abstract: A wrench includes a tool head having a number of teeth formed in a chamber, and a handle having a shaft rotatably engaged into the chamber of the tool head and having a channel laterally formed in the shaft, a stem is engaged into the channel of the shaft, and includes one or more actuators. A follower is slidably received in the channel of the shaft, and includes one or more teeth for engaging with the teeth of the tool head, and for selectively locking the handle to the tool head at selected angular position. The follower includes a space formed by an inner peripheral surface, for engaging with the actuators. One of the actuators may force the teeth of the follower to solidly engage with the teeth of the tool head.