Abstract: A method and apparatus for carrying out the method in which a clamp made from a flat blank is plastically deformed into circular shape, is locked in its closed condition, is transferred from the deformation station to a transfer station where it is placed over the object to be fastened and is thereafter tightened onto the object. In order to maintain the clamp in predetermined position on the object before being tightened, the clamp is additionally plastically deformed into a slightly non-circular shape differing from the circular shape of the object and is again elastically deformed into its original circular shape before being placed over the object so that return of the clamp to its slightly non-circular configuration will provide sufficient frictional engagement to hold the clamp in predetermined position.

Abstract: An open clamp structure capable of withstanding very high tightening forces, with a clamping band whose overlapping inner and outer band portions are mechanically locked by a mechanical interconnection including outwardly extending hooks near the free end of the inner band portion adapted to engage with apertures near the free end of the outer band portion; for purposes of tightening the clamp structure upon engagement of at least one hook in the corresponding aperture, a deformable ear with two generally outwardly extending leg portions interconnected by a bridging portion is provided, whereby the bridging portion includes reinforcing means; at least one of the hooks is thereby a cold-deformed hook having force-engaging surface means while another hook is a combined guide and support hook having inclined guide and support surface means formed by its rear edge facing away from the free end of the inner band portion; the reinforcing means is in the form of a generally pan-shaped depression extending over a sub

Abstract: A clamp structure with a clamping band whose ends are drawn together by a screw-type tightening mechanism that includes a first band tightening member secured near one band end, a second band tightening member secured near the other band end and a screw member for drawing together the first and second tightening members; one of the band tightening members is of at least semi-circular shape and is retained in a loop-like pocket formed by an end portion of the clamping band externally bent back upon itself and secured to the underlying band portion while the other tightening member also of at least semi-cylindrical shape is retained in a loop-like pocket formed by a separate clamping band part whereby the two loop-like pockets are spaced from one another defining a gap; a stepless internal configuration of the clamping surfaces of the clamping band is assured by a tongue-like extension at the inner band portion adapted to engage in a channel-like indentation provided in the outer clamping band portion; to relia

Abstract: A tube connection consisting of a nipple structure and a sleeve member in which the nipple structure includes a tube-receiving portion provided, starting from an abutment surface with a substantially cylindrical section and an outwardly flaring clamping surface. The sleeve member is provided with a first internal section of substantially cylindrical shape followed in the direction toward the free end of the tube-receiving portion with an outwardly flaring clamping surface, whereby the internal diameter of the cylindrical section of the sleeve member is only slightly larger than the maximum diameter of the tube-receiving nipple portion. In one embodiment, the nipple structure and sleeve member are provided with complementary locking means to enable locking of the sleeve member in the clamping position by axial movement in the direction of the free end of the tube-receiving nipple portion and subsequent rotation of the sleeve member into predetermined locking position.

Abstract: An open reusable clamp structure, especially of the earless type, with a clamping band having overlapping inner and outer band portions adapted to be detachably interconnected by mechanical connecting means; first tool-engaging surfaces are provided in the inner and outer band portions, preferably in the form of pressed-out cold-deformed embossments for tightening the clamping band about an object to be fastened thereby, and second tool-engaging surfaces are provided in the inner and outer band portions which are separate from the first tool-engaging surfaces and are again preferably in the form of pressed-out cold-deformed embossments for reopening the previously interconnected overlapping band portions. To prevent over-torquing during reopening, undulations or the like are provided in the outer band portion intermediate the first and second tool-engaging surfaces.

Abstract: A reinforced ear structure for use in a clamp whose clamping band is intended to be contracted by relatively large tightening forces; the ear consists of two outwardly extending leg portions and a reinforced bridging portion interconnecting the leg portions; the bridging portion is provided with a generally pan-shaped, relatively hollow, depressed reinforcement formed by a bottom portion and connecting portions between the bottom portion and the remaining non-depressed bridging portion; the connecting portions thereby extend over substantial parts of the length and width of the bridging portion and the bottom portion is relatively flat.

Abstract: An open clamp structure, especially for earless clamp structures which includes a clamping band with a mechanical interlock in the form of at least one outwardly extending hook in the inner band portion adapted to engage in an aperture of the outer band portion; a preassembly hook is provided in the inner band portion to assure a reliable preassembly of the clamp structure; the preassembly hook is thereby so constructed that it permits a snap-in like engagement of the outer band portion in the preassembled position in which the outer band portion is held until released therefrom when the clamp is tightened into its final assembly condition.

Abstract: A clamp structure which is provided with at least one pair of plastically deformable ear-like folds located on opposite sides of a center longitudinal cut in the clamping band and spaced in the circumferential direction by such a distance that they can be plastically deformed simultaneously by the use of a pincer-like tool. The pincer-like tool includes two sets of jaw-like members spaced from one another so as to permit simultaneous engagement of the two ear-like folds of a respective pair. The pincer-like tool may thereby have a relatively fixed center member forming a relatively fixed jaw-like member and two pivotally supported jaw-like members operable to be actuated toward one another. In the alternative, the pincer-like tool may include two sets of jaw-like members pivotally connected with each other whose points of pivotal connection are coupled with each other as also corresponding jaw-like members to assure movement in unison.

Abstract: A balancing arrangement for a rotating member, especially for hollow shaft made from lightweight metal, in which a counterweight of predetermined size and weight is affixed onto the external surfaces of the rotating member in predetermined position by the use of a clamping band made from a material normally devoid of an significant elastic stretchability. A plastically deformable ear structure is provided in the clamp structure for tightening the clamping band which includes two generally outwardly extending leg portions interconnected by a bridging portion that includes downwardly bent tab-like members along the longitudinal sides of the bridging portion to act as ramp surfaces and reinforcing elements for the ear structure. The counterweight is thereby connected with the clamping band in one place by spot-welding, particularly, when both clamping band and counterweight are made of stainless steel.

Abstract: A conveyor installation for loose material, especially blasting materials for sand-blasting installations, includes on the hall floor, respectively, blast chamber floor at least one longitudinal conveyor (1, 2, 3, 4) and at right angle thereto at its conveyor end in the same plane a cross-conveyor (5). These conveyors (1, 2, 3, 4, 5) operate by the use of conveyor members (27, 28) which are suspended in a pneumatically driven reciprocating frame (19, 24, 33). The frames (19, 24, 33) include lateral girders (20, 21; 31, 32) which are connected by webs (22). The frames run on rollers (11 to 18, 34, 36) which project from boundary profiles (6, 7, 8, 9, 10). The latter delimit laterally the longitudinal conveyors (1, 2, 3, 4).

Abstract: An open clamp structure, especially an earless clamp structure with overlapping inner and outer clamping band portions adapted to be mechanically interconnected; the clamp structure can be tightened about the object to be fastened by the application of a tighening tool at tool-engaging surfaces in these band portions; the tool-engaging surfaces are thereby so constructed and arranged that over-torquing during tightening is precluded. Savings in band material can be realized by the particular arrangement of the mechanical connection of the inner and outer band portions which also permits an efficient preassembly.

Abstract: In a connection of two edges of areal parts which extend at least along one common section essentially parallel to one another, at least one retaining element is arranged at the one edge which form-lockingly engages from behind, as viewed in the edge direction, in a recess in the other edge. At least one projection arranged laterally offset at the one edge in relation to the retaining element in the direction of the engagement from behind, abuts form-lockingly at the part with the recess essentially in the edge direction. To reliably secure together the parts, laser beam welding is used along the common sections of at least one of the retaining element and of the projection.

Abstract: A hose connection for high pressure installations and a method for making the same in which a nipple provided with externally projecting beads or ribs, preferably of annular configuration, is internally expanded by an expanding tool while the hose is constrained against radially outward movement by a sleeve-like member. To enhance the holding ability of the connection, the sleeve-like member is provided with inwardly extending annular grooves, preferably so arranged that the deepest point of the annular grooves are located between peaks of adjacent beads or rims.

Abstract: For the connection of two edges of areal parts which extend at least along one common section essentially parallel to one another, at least one retaining element is arranged at the one edge which form-lockingly engages from behind, as viewed in the edge direction, in a recess in the other edge. At least one projection arranged laterally offset at the one edge in relation to the retaining element in the direction of the engagement from behind, abuts form-lockingly at the part with the recess essentially in the edge direction. For the connection of the terminal edges of open ends of a ring-shaped clamping band, analogously a retaining tongue is provided, preferably in the center of the one edge with lugs projecting on both sides from the tongue which form-lockingly engages from behind in an essentially congruent recess in the other edge also arranged essentially centrally.

Abstract: A method and apparatus for mounting and tightening an open clamp about an object to be fastened in which a first jaw-like member causes the band end portion intended to constitute the inner band portion to be placed about the object to be fastened, a second jaw-like member then causes the other band end portion of the clamp intended to constitute the outer band portion to be placed about the object to be fastened in such a manner that the outwardly extending hook or hooks in the inner band portion is or are adapted to engage with the corresponding aperture or apertures in the outer band portion.

Abstract: A clamp structure of the open type with mutually overlapping inner and outer band portions, in which two ears are provided disposed diametrically opposite one another and at least the outer band portion is provided with an additional opening on the side of its ear opposite the free end of the outer band portion to balance the clamp structure when installed on an object to be fastened thereby. For larger clamp sizes, the inner band portion may also be provided with an opening located on the side of the outwardly extending hooks of the mechanical interconnection opposite the free end of the inner band portion. The inner band portion may additionally be provided with an outwardly extending hook adapted to engage in the opening provided in the outer band portion so as to keep the two band portions axially aligned.

Abstract: A mechanical interlock for an open clamp structure which includes a clamping band having an outer band portion and an inner band portion, intended to overlap in the closed condition of the clamp structure. The inner band portion is provided in the area near its end at least with an outwardly extending combined guide and support hook whose inclined guide and support surface is formed by its rear edge facing away from the free end of the inner band portion; the rear edge forming the guide and support surface is thereby non-rectilinear, as viewed in the axial direction of the clamp structure, to facilitate assembly of the clamp structure and minimize down-time of the machine for punching out the clamp structure. To further improve its holding ability, the rear edge includes a widened portion at least near the area where the outer band portion comes to lie when the clamp is installed on an object to be fastened.

Abstract: A clamp structure with a clamping band and with at least one plastically deformable so-called "Oetiker" ear to be contracted to tighten the clamp structure about the object to be fastened; to assure a substantially smooth; gap-free transistion in the circumferential direction within the area of overlap, for example, of an inner and outer band portion in the area of mechanical interlock or of an insert member and corresponding parts of the clamping band, a tongue portion is provided at each free end of the inner part which is adapted to engage in a corresponding aperture in the respective outer part when the ear is contracted.

Abstract: A clamp structure especially for use in applications in which space conditions do not permit any projecting parts such as plastically deformable ears, and in which outwardly extending hooks adapted to engage in apertures are used to mechanically interconnect the clamp structure; to enable tightening of the band about an object to the fastened, cold-deformed pressed-out embossments are provided in inner and outer band portions, which extend generally in the circumferential direction so that each pressed-out embossment remains integral at least on both sides thereof, where the tool-engaging surfaces thereof are able to withstand very large tightening forces in the circumferential direction which permit a secure tightening of the clamp structure.

Abstract: A clamp structure with a clamping band having open ends adapted to be mechanically interconnected by outwardly extending hooks in an inner band portion operable to engage in corresponding apertures provided in an outer band portion; at least one plastically deformable ear is provided in the clamp structure for tightening the clamping band about an object to be fastened by plastic deformation of the ear; a substantially gap-free transition in the circumferential direction from the inner band portion to the ring-like configuration of the clamp structure defined by the clamping band is obtained by the use of a tongue-like extension at the free end of the inner band portion which is operable to engage into a tongue-receiving aperture or channel provided in the outer band portion.