Abstract: A segmented ring mounting (5) for retaining cylindrical components (2, 3) one within the other in a fluid-operated percussion drill tool, such as a downhole rock drill. The ring mounting also has application to other interengaging cylindrical components which are subject to heavy wear or pressure loading, such as compressors, pumps, borehole tools, casings and drillpipe mountings. The retaining ring (5) seats a smaller diameter cylindrical component (3) within a larger diameter cylindrical component (2), wherein one of the components is formed with a groove (12) or shoulder for seating the retaining ring in use, the ring being capable of radial compression and expansion so as to expand radially into the seating groove or shoulder for retaining the components one within the other in use.

Abstract: A balustrade which features premade gallery, rake and starting newels and rail sections, and the process for installing the balustrade using the newel of this invention. The newel is a tubular member having an insert disposed at the lower end thereof, and optionally including a hex bolt which has intermediate machine screw threads, and distal lag screw threads, the machine screw threads thereof being in engagement with a coupler, disposed above a rigid plate, and the lag screw threads to be disposed within a support for the newel. The process includes the steps of mounting the new gallery, intermediate rake newel(s),—location dependent—mounting the starting newel, and attaching the rail section therebetween, and finishing off the upper portion of newels by attaching newel caps. The balustrade can utilize the newel of this invention at one or both of the gallery and starting newel locations, and at an intermediate rake location if employed.

Abstract: A selectively closable and releasable connecting device for connecting a sports shoe and an item of sports equipment, has a baseplate for fixedly mounting to the item of sports equipment and on which the shoe sole can be supported and locked. The shoe being provided with lateral grooves for receiving a pair of locking elements of the connecting device, which lie rigidly and fixedly diametrically opposite each other on the baseplate with respect to a central pivot for the shoe. The device has a second pair of locking elements which likewise lie diametrically opposite one another and are rotatably connected to the baseplate via a gear mechanism having a driving element with a driver which protrudes, with respect to the supporting surface of the baseplate, for activation by the shoe, in the baseplate. The baseplate is further provided with a gear mechanism locking element which locks the gear mechanism in the closed position.

Abstract: A fitting to be detachably fastened to a furniture part includes a fitting body to abut the furniture part, at least one dowel-like expansion sleeve which is anchored to the fitting body and which can be inserted into a drilled hole of the furniture part, and a pin shaped expansion member for expanding the expansion sleeve. The expansion sleeve projects through an opening in the fitting body, and the expansion sleeve also projects through the opening in the fitting body. The expansion sleeve is provided with at least one flap that projects in a radial direction from the expansion sleeve. The expansion member is provided with a head, which, when the fitting is mounted, presses the flap onto the side of the fitting body which faces away from the furniture part.

Abstract: The present invention relates to a process and a device for dividing a tubular flagpole. This is achieved by introducing into the flagpole an elongated body, which over at least part of its length has a geometric shape, which in concert with a complementary geometric shape inside the flagpole ensures that the flagpole can be cut and assembled in a way that guarantees the rectilinear continuity of the flagpole. The complementary geometric shape is formed in that, after the body is introduced into the flagpole, a filling material is injected so that the space between the flagpole and the elongated body is filled. The flagpole is then cut around the elongated body down to the outer surface of the body so that the geometric shape allows the flagpole to be divided into two sections at the cutting side, the body remaining fixed to one of the sections.

Abstract: The blocking system comprises a first interface element adapted to cooperate with a first of two bodies; a second interface element adapted to cooperate with the second of the two bodies; blocking element adapted to cooperate with the interface elements to ensure temporary blocking and comprising a frangible zone; a rupture device consisting of a shape memory alloy adapted to be deformed by elongation through heating to break the frangible zone, by which the second body becomes free to move relative to the first body; and heating element adapted to heat the rupture device beyond the critical temperature to cause the shape memory alloy to be deformed. A redundancy of heating element may be provided, as well as a retraction of at least part of the blocking element in a housing defined by one of the interface elements. The invention is useful for blocking the displacement of a tilting platform with respect to a fixed platform in the field of space applications.

Abstract: A section rod is a component of a protective fence and serves for fastening a protective screen. A U-shaped receptacle, where the protective screen can be secured, is provided in the section rod. For this purpose, the receptacle has an internal width that is at least in part somewhat less than a thickness of the protective screen. An increased securing action can be achieved through additional sawtooth-shaped elevations. The section rod allows the protective screen to be mounted in a simple and reliable manner without additional fastening or securing parts.

Abstract: A closure system includes two longitudinally-extending shell members, each having flanges. Each of the flanges have inner and outer surfaces such that in a closed state the inner surfaces of each of the flanges contact one another to form at least one longitudinal seam. Several longitudinally extending ramp pairs are disposed on the outer surfaces of the flanges One ramp of each ramp pair is disposed on the outer surface of one flange and another ramp of each ramp pair is disposed on the outer surface of the other flange. The ramp pairs are inclined away from the longitudinal seam when viewed along a first direction. A clamping rail has an inner surface that includes a guide channel interlocking with the ramp pairs so that the first and second flanges compress the seam. Additional longitudinally extending ramp pairs can be disposed on the outer surfaces of the flanges, in which case a second clamping rail having an inner surface that includes a second guide channel interlocks with the additional ramp pairs.

Abstract: A fixing device comprises a first locking member, a second locking member and a pair of locking nuts. The first locking member includes a base portion, four engaging posts and a pair of positioning posts. A pair of platforms is formed on lateral ends of the base portion. Each platform forms a locking hole for receiving corresponding locking nut. Rotation of the locking nut is limited by the platform to ensure proper positioning of a cap of the locking nut. The engaging posts equidistantly extend from the base portion, and each engaging post forms a circular neck. Each positioning post downwardly extends from the corresponding platform, and has a hollow body communicating with the receiving hole. A slot is formed in each positioning post. The positioning post has an upper portion defining a hole having a diameter larger than that defined by a lower portion of the positioning post. A subulate portion is formed at a bottom end of each positioning post for engaging with the circuit board.

Abstract: In a friction- and form-grip connection of rotating components (1, 2) which have different expansion behavior in the region of the connection during rotation, the form grip is effected via a stepped centering seat (3). The friction grip between the two components is effected by means of axially prestressed elements. At least one of the components has a cavity (6) in the interior, in which cavity (6) an insert ring (7), which exerts a radial force on the centering seat (3) during operation, is arranged. The prestressed insert ring (7) bears with only part of its axial extent against the component (1) interacting with it.

Abstract: A cam and expandable dowel type device is provided for joining together two members, e.g., furniture components. The cam is rotatably mounted in a first of the members and designed to engage a head portion of the sleeved dowel protruding from the second member. Rotation of the cam displaces the dowel relative to the sleeve, causing the end of the sleeve to expand and thus anchor the sleeved dowel in the second member. Further rotation of the cam causes the two members to be drawn tightly together. The sleeve is designed to be partially collapsible over its length in order to provide an improved tightening action.

Abstract: A cam and expandable dowel type device is provided for joining together two members, e.g., furniture components. The cam is rotatably mounted in a first of the members and designed to engage a head portion of the sleeved dowel protruding from the second member. Rotation of the cam displaces the dowel relative to the sleeve, causing the end of the sleeve to expand and thus anchor the sleeved dowel in the second member. Further rotation of the cam causes the two members to be drawn tightly together. The camming element is designed to have a working rotational capacity of at least 190°.

Abstract: A joint structure, such as a bulkhead joined to an annular shell, is formed by providing a conforming pattern of ridges and valleys on the facing portions of the elements to be joined. A tensioned band is applied to the external surface of the annular shell overlying one of the ridges in the annular shell. The tensioned band stresses the joint in compression, offsetting subsequently applied shear stresses so as to negate peeling failure forces. The joint loadings are sustained with a mechanical interlocking, making the use of an adhesive optional.

Abstract: A connector for interconnecting a pair of adjacent sections of an expandable tubing string includes a plastically expandable sleeve that is arranged co-axially around or inside the ends of the interconnected tubing sections and a series of circumferentially spaced mechanical fasteners, such as screws or rivets, for fastening the sleeve to each of the ends.

Abstract: Two alternative mounting methods and devices for mounting rails achieve new points of mounting (8) by adding new pitch-holes to mounting rails (2) and using either adjustable cage-nuts or cage-nuts containing two nuts in their respective pitch-holes. The shape of the new pitch-holes preserves the structural integrity of mounting rails (2). The number of mounting points and possibilities can be dramatically increased, thereby satisfying various ventilation and pass-through requirements between devices (5).

Abstract: The invention relates to a holder for connecting a blade (7) to the lower edge (6) of a snow-clearing device, such that the blade is given an acute, cutting angle to the base and can be folded backwards, thereby avoiding damage when running into an obstacle, and automatically resume its cutting angle after passing the obstacle. The holder comprises a trilateral hollow beam (1), the three sides of the beam forming respectively: a first fixing element (3) which is adapted to be fixed to the lower edge (6) of the snow-clearing device; a second fixing element (4) which is adapted to engage the back of the blade (7), and a support element (5) connecting the other two elements (3, 4). At least the second fixing element (4) and the support element (5) are made of an elastic polymer material.

Abstract: A coupling structure of a variable length shaft, comprises a pipe member having an end formed with a plurality of slits elongated in the axial direction to be capable of expanding and diminishing in diameter, an intermediate shaft spline-fitted in the end of the pipe member, and a ring member fitted on an outer periphery of the end of the pipe member, the intermediate shaft being fastened by the end of the pipe member. A holder is releasably attached to an end of the ring member to expand a diameter thereof and thereby reduce a slide frictional resistance of the pipe member against the intermediate shaft. When the holder is released, the ring member diminishes in diameter, and a fastening force of the pipe member on the intermediate shaft is increased.

Abstract: Articulated part (1) for a stand (2) with an axially rotatable and vertically swivelable articulated arm (3), wherein the articulated part (1) has a pivot pin (6) which can be connected with a carrier (5) by a connection part (4), and wherein the articulated part (1) has a tilting joint (7) for the articulated arm (3), wherein it is provided according to the invention that the articulated part (1) is essentially formed of a one-part plastic injection-molded part (1.1), wherein the tilting joint (7) has two bearing disks (8) formed of sheet metal which have an opening (9) roughly in the center, wherein the bearing disks (8, 8) are embedded parallel to one another at a distance (A) in the plastic injection-molded part (1.1), wherein the openings (9) form a joint bearing (10) for the tilting joint (7).

Abstract: A cover shoe that encloses the junction between the base of a post and a mounting plate is disclosed. The cover shoe is preferably made of two pieces and thus allows the cover shoe to be applied to the junction after the post has been welded to the mounting plate. The two piece cover shoe eliminates the need for field welding of the post to the mounting plate while the cover shoe is precariously slid up the post and maintained there during the welding process.

Abstract: A slip joint assembly provides radial clearance compensation between a slip joint yoke and a receiving member. The slip joint yoke has a plurality of male splines formed externally thereon. The receiving member receives the splined yoke therein and has female splines which mate with the male splines of the yoke. The receiving member also has a plurality of circumferentially distributed, longitudinally extending, axis-parallel openings formed therein. The slip joint assembly further includes an elongated member having a C-shaped cross-section. The elongated member is compressibly received within each of the plurality of longitudinally extending openings and engages the splined shaft for providing a radial force between the splined shaft and the receiving member. This elongated member is preferably formed of a spring material to allow it to be compressible.