Abstract: A crutch includes an arm rest having an elbow end and a front end, the front end defining a front face having a first opening formed therein, and a bottom edge forming a second opening. The crutch has a handle extending outwardly from the front end of the arm rest, but not from the first or second openings. A leg is received into one of the first and second openings in a first configuration, and into the other of the first and second openings in a second configuration. The leg is selectively convertible between the first and second configuration.

Abstract: An animal feeding arrangement includes feed supply station (1), configured to house feed therein, a fence (2) that surrounds the feed supply station (1) and an area (3) adjacent to the feed supply station (1), a gate (4), arranged in the fence (2) and movable between an open state and a closed state, at least one autonomous mobile feed wagon (5), configured to receive feed from the feed supply station (1) and to deliver the feed to an animal feeding station (6) located outside the fence (2), and at least one feed loading device (7, 8), configured to load feed housed in the feed supply station (1) into the feed wagon (5). The feed wagon (5) includes a coupling device (9) configured to temporarily couple the feed wagon (5) to the feed loading device and enabling the feed wagon (5) to move the feed loading device.

Abstract: Present invention provided system and method for securing an axe head to an axe handle whereby the system utilizes fastening spring pins to secure the axe head to the axe handle.

Abstract: A tool joinable with a handle. The tool includes a body, the body includes a middle area configured to be joinable to the handle. The front end of the body includes a toe extending away from the middle area. The toe includes a first vertical thickness and a second vertical thickness less than the first vertical thickness for a length of the toe extending away from the middle area. The back end of the body can include a heal pad extending away from the middle area and to create a heal gap between a bottom surface of the heal pad and the second portion of the bottom edge defined by the middle area. The tool can include a fulcrum joined to the body and defining a fulcrum portion of the bottom edge with the fulcrum projecting away from the top edge.

Abstract: A post coupler has one or more positive post stops therein limiting extension of an end of a post section in or over the coupler beyond the stop. The stops may be freely extended tabs or stop embossments from or in the coupler flanges. Outside wrap, inside wrap and hidden post couplers are disclosed, as well as assembly methods.

Abstract: Embodiments of the invention are directed to a traffic control assembly, which includes a base selectively mountable adjacent a roadway, a flexible tubular member coupled to the base, a reinforced retaining member, and a retaining pin. In accordance with at least one embodiment, the reinforced retaining member, when positioned in a recess in the base, is configured to secure the flexible tubular member to the base.

Abstract: A retractable bar using a positioning spring leaf and a control device to control positioning between an inner tube and an outer tube is disclosed. The control device includes a movable member, a push button, and a linking device connected between the movable member and the push button. When the push button is not pushed by an external force, the positioning spring leaf will be pushed by the movable member to force its positioning protrusions into engagement with locating notches of the inner tube to lock the outer and inner tubes. When the push button is pushed by an external force, the linking device will be forced to move the movable member away from the positioning spring leaf, causing the positioning spring leaf to disengage the positioning protrusions from the locating notches of the inner tube.

Abstract: An adapter for connecting a helical pile to a drive assembly includes a pin block connectable to the helical pile. A tool body has a first protrusion to receive the pin block to facilitate aligning the helical pile with the tool body. A locking member is movably connected to the tool body. The locking member is movable between an insertion position to allow insertion of the pin block and a locking position to lock the pin block in the tool body.

Abstract: A pole assembly includes a first mounting member defining a locking hole, and a second mounting member setting around the first mounting member. The second mounting member includes a tab operable to be bent into the locking hole to lock the mounting members together.

Abstract: Provided is a pull pin that is configured to lock in a forward position to prevent accidental or undesirable retraction of the pull pin. The pull pin has a housing, a pull pin shaft, an inner shaft, a first and second spring, and at least one ball bearing. The housing has a ball locking space, which holds the ball bearing between the locking space and a ball aperture formed in the pull pin shaft to thereby lock the pull pin shaft in the forward position. Only upon the application of an external force to the inner shaft, which aligns a ball release portion with the ball aperture, can the ball bearing move into the ball release portion and thereby move out of said locking space, allowing for the retraction of the pull pin shaft.

Abstract: A device is described for mechanically coupling an actuator to a valve which is adjustable by a plunger that is displaceable along a z-axis. The device has (a) a retaining element which can be mounted on a connecting chassis of the actuator and which is embodied for engaging on two opposite sides of a connection piece of a valve body in a recess incorporated in the connection piece, and (b) a clamping device which is disposed on a section of the retaining element and which is embodied in such a way that when the clamping device is actuated the section of the retaining element is displaced parallel to the z-axis relative to the connecting chassis such that the connecting chassis bears against the connection piece. An actuator having a coupling device of said kind and a method for mechanically coupling an actuator to a valve are also described.

Abstract: A coupler for a standoff arrangement for ladders and the like. The standoff arrangement comprises a ladder attachment portion and a ladder support portion, with the attachment portion formed to be releasably securable to a ladder and the support portion extending from the ladder attachment portion. The ladder support portion has a pair of individually adjustable bearing arms, and a coupler is installed in each bearing arm to make the bearing arm universally adjustable in relation to the structure against which the ladder standoff arrangement bears.

Abstract: A shaft member coupling structure includes first and second spool members lockably coupled in a condition wherein the spool members coaxially extend with a coupling part in the center, a fitting concave portion axially extends and is formed at the end of the first spool member and a fitting convex portion axially extends and can be fitted into the fitting concave portion and is formed at the end of the second spool member. A coupling pin is inserted into first and second coupling holes. Further, an annular holding groove concave in a circumferential direction is formed in a part in which the coupling hole is formed on the periphery of the first spool member, both ends of the coupling pin inserted into the coupling holes are covered with a ring fitted into the holding groove. Thus, the coupling pin is prevented from falling away.

Abstract: A connector connects a rotatable body including an attachment hole and an engaging groove, and a shaft pressed into the attachment hole to integrally rotate. The connector includes at least one pin configured to fit in the engaging groove; and a screw having a head configured to be pressed against the rotatable body either directly or via another member. The at least one pin is fixed on the shaft and extends in a radial direction of the shaft to penetrate the shaft. The screw is screwed into a screw hole on an end face of the shaft and is tightened to press the at least one pin against a surface of the engaging groove.

Abstract: A quick releasing device of an actuator comprises a quick releasing mechanism deposited on a transmission apparatus and a releasing spring for transmitting a power from the transmission apparatus to a load connector to drive the load connector to linearly move when it is normally constricted or releasing the transmission apparatus to retract the load connector when it is loosened, wherein the releasing spring has a node portion for being pulled to loosen the releasing spring, and a releasing handle settled aside the quick releasing mechanism having a operation portion and a driving portion, wherein, when pulled, the operation portion drives the driving portion to swing toward the node portion so as to pull the node portion and thereby loosen the releasing spring.

Abstract: A telescoping rod structure, for a linear actuator, arranged at a connecting position of a telescoping rod of a linear actuator, mainly includes a telescoping rod, a sleeve, and a connecting cap, wherein the telescoping rod is connected to a linear transmitting mechanism, and an accommodating groove passing through the telescoping rod is arranged at top of the telescoping rod; furthermore, the sleeve, arranged in the accommodating groove, is a hollow pipe piece for accommodating a connecting element to pass through; finally, the cap is a hollow lid body, the peripheral of which is arranged a plurality of corresponding projecting seats, at each of which a thorough hole is arranged such that, when the cap is fitted onto the top of the telescoping rod, it may fix the position of the sleeve arranged at the accommodating groove, in the meantime, by making the thorough holes just correspond to the hollow position of the sleeve, it being able to facilitate the connecting element to be fitted and connected securely t

Abstract: A coupling spring pin is provided for use in hollow sections or tubes. The coupling spring pin comprises a base spring element and a bolt connected to the spring element. The spring element is provided with a flange and at least two bent spring tongues. The bolt stands perpendicularly on the flange and the two bent spring tongues extend downwards from the flange. The bolt may be provided with a bolt case in order to securely prevent shearing. The bolt case, in its lower region, may be provided with an annular groove and the bolt case may be peripherally (injection) molded on the base in an injection molding tool, so that the plastic material of the flange may fill out the annular groove, which allows the bolt case to be connected to the spring element in an undetachable and stable manner.

Abstract: An apparatus includes a rotatable device, which may be a keyless chuck, a keyless chuck adapter, a collet chuck, a collet adapter, a set screw bit retaining chuck, or a set screw bit retaining adapter. The rotatable device is configured to be mounted to a power tool for rotational driving of the rotatable device. The rotatable device is configured to receive a first bit device detachably mounted in the rotatable device for powering rotational movement of the first bit device. A generally cylindrical mounting section is defined on the rotatable device, which is capable of being rotatably driven by the power tool. The generally cylindrical mounting section includes at least one locking mechanism on it. The generally cylindrical mounting section is adapted for insertion in and engagement with a bit holding attachment.

Abstract: An attachment (10) for use with a power tool (12) which can conveniently convert a rotatable chuck (14) or adapter (78) used with a first bit device (22) to usage with a second bit device (36) and vice versa. Either first or second bit device can be used for drilling, fastener driving or for other operations, however the preferred configuration is use with a first bit device for drilling pilot holes and a second bit device for driving of a fastener into the freshly drilled pilot hole. The attachment (10) is easily detachably securable with respect to any chuck (14) or adapter (78) which has a rotating cylindrical surface (18) with a locking aperture (20) therein. A capping ring (52) may be positioned in an annular slot (42) to retain a resilient member (48) positionable within an annular groove (40) for facilitating biasing of a locking pin (44) into a locking aperture (20) on the rotatably driven cylindrical mounting surface (18).

Abstract: A shovel has a main handle, a blade member, a pivot base and an auxiliary handle. The blade member is mounted at an end of the main handle, the pivot base is pivoted on the main handle adjacent to the blade member and the auxiliary handle is pivoted on the pivot member. The main handle is rotatable independently relative to the pivot base. A user operates the shovel of the present invention by holding the main handle and the auxiliary handle and need only to turn the hand holding the main handle to tip the blade member for throwing the shoveled objects off.

Abstract: A rackmount system for a component may include outer slide members that couple with inner slide members. The outer slide members may be coupled to a rack with slam latches. The slam latches may couple with rails of the rack when the slam latches are placed against the rails. The inner slide members may be coupled to a component. The inner slide members may include tabs that engage slots in a chassis of the component to couple the inner slide members to the component. An inner slide assembly may include an inner latch that couples with the outer slide member to inhibit movement of the inner slide member relative to the outer slide member. The rackmount system may include a locking mechanism that locks the component relative to the rack.

Abstract: A telescopically adjustable pipe includes an outer tube, an inner tube, an inner bushing, a sleeve, a push member, a mounting bracket, a positioning member, and a retaining member. Thus, the positioning member is moved by movement of the push member and is detachably locked in the respective positioning hole of the inner tube to lock the inner tube in the outer tube, so that the inner tube is locked in and cannot slip from the outer tube.

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: In a device for coupling a tooth onto an adaptor nose with a key, the tooth includes a skirt shrouding the adapter nose beyond the key passage zone and having a configuration connected to a return wall, comprising a bordering ridge. The wall is provided in the width of the skirt and corresponds to the passage and positioning of the key. Proximate the ends of the wall, and in the thickness of the skirt, are provided passage openings for the key devoid of abutting function in operation and ensuring a guiding and stopping function only when the key is inserted or removed. The key comprises two components transversely mobile relative to each other.

Abstract: An adjustable height bicycle seat post assembly comprises a hollow seat post for supporting a bicycle seat slidably supported on plastic shims inside a hollow tube. The hollow tube clamps into the frame of a bicycle. A main spring forces the post upward, but a locking mechanism interconnects the post with the tube in various fixed positions relative to the tube. The locking mechanism includes a foundation and a projection extending from the foundation having a counterbore for guiding a plunger into holes on the post. The locking mechanism adheres to the outside of the tube to bear shearing forces on the plunger. An endcap on the locking mechanism and a top cap on the tube protect the assembly from foreign debris. The locking mechanism may be manipulated remotely using a magnetic switch assembly or manually using a manual assembly.

Abstract: A pipe connecting structure for connecting a pair of sleeve-like pipes integrally in an axial direction by inserting a male side end portion of one of the pair of sleeve-like pipes into an opening of a female side end portion of the other sleeve-like pipe so as to serve as a connecting portion, wherein a male side protrusion insertion hole and a female side protrusion insertion hole are formed in a peripheral surface of each end portion of a pair of the sleeve-like pipes which constitute the connecting portion, the protrusion insertion holes are brought into coincident with each other, an engagement protrusion is inserted in the protrusion insertion holes and engaged therewith, and such an engagement state of the engagement protrusion is retained by pressing the engagement protrusion with a sleeve member disposed in such a manner as to cover the connecting portion.

Abstract: A power tool coupling system for coupling two boom members of a split-boom power tool. The coupling system includes a first section and a second section. The first section is adapted to be fixedly attached to an end of a first one of the boom members. The first section includes an aperture for receiving a locating member on a second one of the boom members. The second section is movably connected to the first section. The second section is adapted to depress the locating member, while the locating member is located in the aperture of the first section, when the second section is moved from a first to a second position.

Abstract: A steering column rotary tilt locking mechanism. The mechanism includes a rod pivotally interconnecting upper and lower column members and a sleeve supported about the rod. The rod and sleeve have selectively engageable surfaces. The sleeve has opposed slots with one end of each slot having axis offset from the other slot. Upon rotation of the sleeve, the sleeve moves out of perpendicularity relative to the shaft such that the slots bind against the shaft and the sleeve moves off center relative to the rod and binds thereagainst.

Abstract: A knee joint assembly for an agricultural implement or a vehicle includes a relatively short knee casting with an apertured end of rectangular cross section which is inserted in a mating steel knee tube. The apertures in the casting end align with beveled apertures in the side walls of the knee tube. Steel pins of length approximately equal to the spacing of the side walls are pressed into the casting through the beveled apertures. Groove welds then secure the steel pins to the knee tube. The casting is relatively small and does not require any welding. Inexpensive ductile iron and common steel tubes can be used for most or all of the assemblies on a machine. The apertured end of the casting includes concave walls to accommodate knee tube concavity and weld flash on the inside of the knee tube.

Abstract: A positive lock quick release pin for locking a plurality of objects together includes a handle portion which is in communication with a handle housing. The handle housing has an interior cavity within which a shaft member is disclosed. The pin also includes a ball retention mechanism located in the handle portion that is moveable between a locked position where the mechanism extends outwardly of an opening formed in the handle housing and an unlocked position where the ball mechanism extends no further than the outer edge of the opening. The ball retention mechanism is moved between the locked position and the unlocked position by reciprocation and rotation of the shaft member within the handle housing.

Abstract: The present invention provides for an assembly for locking a first workpiece mountable onto a second workpiece. The first workpiece has an opening adapted to allow a locking pin to pass therethrough. The opening is cooperatively disposed with respect to a pin receiving means in the second workpiece when the first workpiece is mounted on the second workpiece. At least one of the first and second workpieces has a recess to receive a pin carrier. The assembly comprises a locking pin adapted to pass through the opening and be received by the pin receiving means when the first workpiece is mounted on the second workpiece; and a pin carrier receivable in the recess. The pin carrier has a pin receiving orifice and is alignable with both the opening and the pin receiving means when the first workpiece is mounted on said second workpiece. The assembly further comprises magnetic means on the locking pin and/or the pin carrier to magnetically attract the locking pin and the pin carrier.

Abstract: A pull pin assembly includes: a first pole having a first hole; a second pole having a second hole, and sliding in the first pole; a main body having a central hollow containing the first pole; a pull pin body extending radially from the central hollow, and having a space extending into the central hollow; a pull pin, having a circumferential stop, disposed in the space to move from a first position extending into the central hollow through the first hole to a second position outside the central hollow; a pull pin plug fit into the space and having a hollow containing the pull pin; and a biasing member biasing the pull pin toward the second position to lock the first and second poles; wherein the biasing member is disposed to bias the pull pin between the circumferential stop and the pull pin plug.

Abstract: A novel solution for changing sweeps or knives on a cultivator or other soil working tool is the subject matter of the present invention. In today's farming world, where labor is at a premium and time is of the essence, a sole operator or farmer in preparing the fields for planting, summer fallow or other operations will sometimes need to change the sweeps or knives which till the ground several times for different crops or operations. The novel invention herein provides for an apparatus for quickly removing the sweeps (2) on cultivator shanks and replacing them with other soil openers of different width or configuration. A simple press button (7) releases the sweep (2) from an adapter bolted to a standard cultivator shank. The present invention eliminates the problem of sweeps falling off shanks due to lack of friction or difficulty in removing sweeps because of over friction.

Abstract: A skateboard rail is metal tubing welded on top of legs also made of metal which hold the tubing above ground level. The legs are welded to base plates which are also made of metal and prevent the railslide bar from tipping over. The legs can be adjustable by placing a smaller leg into a larger leg and held in place by putting a pin or bolt in the aligned holes. The skateboard rail provides as an obstacle which skateboarders or rollerbladers or bicycles can perform tricks on by sliding across the top surface.

Abstract: An improved adjustable jack stand combines a ratchet and pawl height maintenance mechanism with a pin and hole mechanism wherein the holes in the post coordinate with the teeth in the post so that any engagement between the pawl and a tooth ensures that a pair of holes in the base and the post are aligned to receive a pin. Additionally, the pin defines a circular cylindrical shape, and each of the pin support sections likewise defines a corresponding bottom half of a circle, thereby exposing the targeted hole in the ratchet bar for easy viewing by the mechanic. An elongated tether is provided and has one section connected to the body and another section connected to the pin.

Abstract: A safety and fixing mechanism allows a movable shape to move in one direction relative to a fixed shaped along an axis but automatically stops the moving shape from moving in the other direction. A ratchet machanism fastened to the fixed shape includes a ratchet element that is movably guided by a support in a direction substantially perpendicular to the axis. The ratchet element has an end portion that protrudes form the fixed shape toward the movable shape, the end portion having a flat end surface and an inclined end surface inclined to the axis. A spring biases the ratchet element relative to the fixed shape toward the movable shape. A perforated strip fastened to the movable shape has a plurality of spaced-apart holes lying in a row parallel to the axis, each hole being adapted to receive the end portion of the element.

Abstract: A pull pin assembly includes: a first pole having a first hole; a second pole having a second hole, and sliding in the first pole; a main body having a central hollow containing the first pole; a pull pin body extending radially from the central hollow, and having a space extending into the central hollow; a pull pin, having a circumferential stop, disposed in the space to move from a first position extending into the central hollow through the first hole to a second position outside the central hollow; a pull pin plug fit into the space and having a hollow containing the pull pin; and a biasing member biasing the pull pin toward the second first position to lock the first and second poles; wherein the biasing member is disposed to bias the pull pin between the circumferential stop and the pull pin plug.