Abstract: A fencing structure having at least a pair of upright posts each having vertically extending channels that face one another. Extending between each pair of posts are an inverted channel top rail and a bottom rail. The top rail has inwardly directed webs which define an inwardly directed panel receiving throat as has the bottom rail when assembled. A rectangular panel is secured to the top rail and bottom rail by brackets which are locked in the channel, to inwardly directed webs of the top rail and to the bottom rail.

Abstract: In a screw mounting arrangement for a plastics moulded filter or a coalescer element end cap to a base the base is provided with a serrated track which a locating member is engageable with when the filter or coalescer element is screwed onto the base such as to prevent loosening thereof due to vibration.

Abstract: A coupling for connecting two elements such as building elements. The coupling comprises two profile members (4, 5) attached to the elements (2, 3) to be connected, and a spring member (10). Each profile member has an L-shaped opening (6) adapted to receive one edge of the hat-shaped spring member, which comprises a screw (14) at its mid portion. When the screw is tightened, the edge portions of the spring member are securely locked in the L-shaped openings (7) and interlock the two elements. The coupling comprises preferably two spring members (FIG. 1).

Abstract: A self-erecting joint for a pair of hinged, tubular members in which the hinging is located at corresponding portions of the members and the opposite edge portions are connected by spring-biased toggle links which in the unfolded position of the members are nested against one of the members in substantial alignment and over-center for securely locking the joint in the unfolded condition.

Abstract: A ball joint at the end of a track rod of a steering system has a ball pin rotatable in a socket at the end of the track rod. The spherical head of the ball pin has an extension on which a slug is slidable. The slug is constrained to move in a direction axially of the track rod in an aperture in the base plug which closes the socket.

Abstract: Flexible joint, including at least two plate spring members (3, 3'), located separated from each other and extending substantially parallel in relation to each other, attached in connection to first and each other adjacently located end portions against a first element (1') and having opposed end portions movably attached against a second element (1). By introducing a substantially similar first displacement movement for the plate spring members (3, 3'), the elements (1, 1') can be separated from an abutting and linearly extending position, and by means of a continued and different displacement movement, the first element (1) is pivoted to an angularly different position of extension in relation to the second element (1).

Abstract: This invention relates to connector systems for portable display devices. The connectors of this invention allow adjoining panels of the display device to be joined to each other and be moved in pivotal relationship with each other. The connector consists of a male member which is secured to a channel which is an integral part of the display device and a connector plate which joins two or more channels together. When the channels are joined using the connector of this invention, the channels and their associated display panels may be pivotally disposed in relationship to each other.

Abstract: A fence line is provided including a pair of spaced posts between which a fence opening is defined and wherein a cattle guard is substantially centered in the opening and spans considerably less than the width of the opening. A pair of edge upstanding panel-like wing closure members are provided at opposite sides of the opening between the posts and the adjacent sides of the cattle guard and pivot structure pivotally mounts first corresponding upstanding base edge portions of the closure members at the opposite sides of the opening for angular displacement about upstanding axes and with the closure members including second free swinging upstanding edge portions opposite the first edge portions swingable toward and away from closed positions with the second edge portions at least closely adjacent the opposite sides of the cattle guard and an upstanding plane containing the fence line opening.

Abstract: A rail and post fence structure (20) includes tubular posts (22) having a plurality of apertures (50) in the side walls thereof for receiving one end of the rails (24, 26, 28, 30). Each rail has a generally channel cross-section with a web (56) and side walls (58) extending therefrom. The side walls have flanges (60) extending inwardly. The aperture in the side walls of the posts substantially correspond with the outer configuration of the rails such that assembly is accomplished by inserting the rails into the apertures of the posts. The rails are attached to the posts by use of a separator structure for spreading the side walls of the rails. This separator structure includes an elongated clip (70) having a web (72) and a pair of legs (74, 76) extending from opposing longitudinal sides of the web for engagement with the inturned flanges of the rail.

Abstract: A shopping cart corral kit having modular components for assembling and disassembling the modular components in the parking area of a business establishment providing shopping carts for its customers. The corral kit modular components can be assembled with conventional fasteners without welding and without exposing sharp edges. The modular components are small enough in size to be shipped in a carton unassembled to permit the business establishment's personnel to assemble the component parts. The major modular components are constructed of galvanized tubing or pipe that may be provided with a colored plastic coating to prevent rust.

Abstract: The invention relates to a coupling for making a connection secured against relative rotational and axial displacement between a hub member and a shaft member. The shaft and hub members have engaging keys and grooves at the internal and external circumferences thereof. The hub member has a circumferential groove undercutting the keys thereof and an insert member having the same key and groove configuration as the shaft member is disposed therein. The insert member is circumferentially offset relative to the hub member so that the respective keys and grooves thereof are out of alignment. The keys of the insert and hub members are then in axially abutting engagement with the insert member serving as an anchor so that a screw connection between the shaft and the insert members allows the shaft and hub members to be drawn towards each other to form a firm and secure connection.

Abstract: A stationary robotic base carries a movable robotic platform and supports a pair of vertical striker plates spaced apart by a central, elastomeric block. The striker plates are confined within a compartment of the stationary base, and extend upward into a pathway defined by a lug depending from the moving platform. The lug contacts the top portion of a given striker plate and, as the plate is struck, it tends to pivot about its bottom edge toward the other plate, compressing the elastomeric block, while the other plate is held from moving away from the block. The assembly is bidirectional, with each striker plate being yieldable toward the other as it is encountered by the moving lug.

Abstract: An adjustable knuckle joint device for folding ladders includes in combination: a first coupling member having a first circular junction portion provided with an annular flange and a plurality of openings and bulges therein and a first elongate joint portion extending at an angle from the circular junction portion; a second coupling member having a second circular portion with a flat top surface being movably connected to and in bearing contact with the first coupling member, and a second elongate joint portion extending at an angle from the second circular junction portion; a straight axle fitting pivotally connecting the first and the second circular portions together; and a snap catch positioning assembly operatably fixed on the second elongate joint portion of the second coupling member in conjunction with the first circular junction portion. By manually operating the snap catch positioning assembly, a simple, secure and safe adjustment of both coupling members relative to one another results.

Abstract: A strong transition joint between an aluminum plate and a steel object includes an aluminum sleeve adapted to be fusion-welded to the aluminum plate and a titanium core explosion-welded to the aluminum sleeve in the center thereof with the titanium core having an internally threaded hole adapted to receive a steel bolt so that the occurance and economic consequences of corrosion are minimized.

Abstract: A connecting assembly comprising a support including spaced-apart sides, and a bore extending between the sides, a first member slideable in the bore, and including a first portion located on one side of the support, and a second member including an opening therein. The connecting assembly also includes a connecting device adjacent to one side of the support for connecting the second member to the first portion of the first member and comprising a first piece fixedly connected to the first portion, and a second piece located between the first piece and the one side of the support. The second piece also includes a bore which receives the first member for movement thereof relative to the second piece between a connect position with the first piece adjacent the second piece and a disconnect position with the first piece spaced from the second piece.

Abstract: An improved sucker rod assembly is provided for use in oil wells and the like. The assembly includes a sucker rod of fiberglass, carbon fibers, graphite fibers, plastic or the like and with a pair of end fittings secured to opposite ends thereof. Each fitting includes a rigid elongated casing of metal or the like having interior surfaces defining an open front end and a central cavity extending rearwardly from that front end, in which cavity one end of the sucker rod is disposed. The side portions of the interior surfaces of the casing are contoured to define with the side portions of the sucker rod end in the cavity a single, annular, elongated, tapered, frusto-conical or wedge-shaped space. An anchoring component substantially fills the space and bonds to the side portions of the rod to lock the rod end in the space and thereby secure the fitting to the rod. Preferably, the anchoring component has a narrower diameter at the front end than at the rear end thereof.

Abstract: A tubular reinforcing member having end surfaces which conform to the cylindrical inner surface of a tubular chord member are positioned within the tubular chord member at the intersection of a bracing member. The longitudinal axis of the tubular reinforcing member is positioned so as to be coincident with the longitudinal axis of the intersecting bracing member. The use of the internal tubular reinforcing member constitutes an improvement over the commonly used stiffening rings in the direct translation of tensional and compression forces acting along a bracing member is transferred to a portion of the wall of the chord member opposite to that to which the bracing member is attached.

Abstract: A substantially rigid structural joint can be assembled from an assembly made up of a pair of separate joinery parts. Each joinery part is preferably in the form of a rigid rectangular-shaped, sheet metal strip. One joinery part has a bracing member connected to and extending outwardly from one of its longitudinal sides in an orthogonal relationship. The bracing member also extends toward and along one of the longitudinal sides of the other joinery part when the latter is placed in an erected condition with the one joinery part. In such condition, they extend in orthogonal relationship to one another and have end portions which form a corner therebetween. Interengagable male and female elements on end portions of the joinery parts adjacent the corner are mated together when the parts are placed in their erected condition.

Abstract: A securing unit for mounting a board such as a wiring board or a printed circuit board between securing members formed thereon on the front side. At least one detent member is formed on the rear side of the securing unit so as to be insertable into a mounting hole formed on a fixing plate such as a chassis so as to secure or fix the securing unit. The securing unit comprises a bottom plate, at least one opposed wall formed on the front surface of the bottom plate, at least one holding member formed on the front surface of the bottom plate and located opposite to the opposed wall, and at least one detent member formed on the rear side of the bottom plate so as to resiliently fix the securing unit on the chassis. At least one detent projection is formed on any one of the opposed wall, the holding member, or both the opposed wall and the holding member, respectively, so as to prevent or stop the movement or shift of the board to be inserted.

Abstract: A device for attaching an object to a wall comprises a body with a cylindrical head centrally disposed on a base. The head incorporates longitudinal elastic members terminating in hooks. These are adapted to engage on the edges of an opening in the wall into which the head is inserted. A clamping ring mounted on the head is movable along its length. A spring is disposed between the base of the body and the clamping ring. The force exerted by this spring is transmitted to the wall so as to lock the hooks on to the edges of the opening. Cooperating guide means on the clamping ring and on the body are adapted to guide the clamping ring as it moves along the head, simultaneously rotating. Cooperating locking means on the body and on the clamping ring are adapted to lock the clamping ring in a bottom position on the head.