Abstract: The invention relates to an apparatus for manufacturing at least one drive belt, comprising a tubular shaping body having a first inner cavity which extends in the longitudinal direction of the shaping body over the entire or predominant length of the shaping body and is surrounded circumferentially by a wall of the shaping body, wherein the inner side of the wall of the shaping body facing the first inner cavity has a shaping surface for abutment and shaping of the drive belt to be produced during the manufacturing process. The invention also relates to a method of manufacturing at least one such drive belt by means of such an apparatus.

Abstract: The invention relates to a belt drive (24) with (a) a first pulley wheel (12) in the form of a drive sprocket with drive teeth (16), (b) a second pulley wheel in the form of an output sprocket (18) and (c) a toothed belt (22) that (i) connects the drive sprocket (12) and the output sprocket (18) for transmitting a force and (ii) has a belt back (38) and (iii) a plurality of teeth (34), wherein a tooth base (36) is situated between two adjacent teeth. According to the invention, (d) the toothed belt (22) comprises a plurality of recesses (26), each of which is configured in a tooth base (36), and (e) at least one pulley wheel features guide projections (28) for engaging in the recesses (26).

Abstract: Transmission belt tensioner includes (a) a housing, (b) a set of disc springs, (c) a tensioning arm which is connected to the disc springs for compressing the disc springs upon a movement of the tensioning arm out of a neutral position in a deflection direction (A) relative to the housing. In an embodiment, a second set of disc springs is provided, wherein the tensioning arm is connected to the disc springs of the second set for compressing them upon a movement of the tensioning arm out of a neutral position in an opposite direction (G) to the deflection direction (A).

Abstract: The invention relates to a force transmission belt, formed of at least one belt material (2) having a belt longitudinal direction and having a belt width extending transversely to the belt longitudinal direction, containing a belt back (1), a tension-bearing element zone (3) having a plurality of tension-bearing elements arranged adjacent to each other over the belt width at a distance and parallel to each other, and a force transmission zone (6) adjoining the tension-bearing element zone (3). Said force transmission belt can be formed simply, economically, and with improved running properties in that the tension-bearing elements are formed by at least two narrow strips (4) of a pre-stretched plastic material, which strips are arranged adjacent to each other over the belt width and are spaced apart from each other by belt material (2).

Abstract: A power transmission belt having a base made of polyurethane and a textile overlay includes a first coating of a first thermoplastic material on the surface of the textile overlay. The first coating forms an impregnation, which has a melting temperature from 80° C. to approximately 145° C., penetrates at least partially into the textile. A second thermoplastic material on the first coating has a higher melting point. The first and second coatings can be applied successively to the textile overlay before casting of the polyurethane or can be overlaid as individual films or as a multi-layer film, and they may be applied to the textile overlay by heat and pressure. The coating acts to reduce abrasion and prevents the through passage of the belt polyurethane.

Abstract: A v-ribbed belt manufactured in a molding or grinding process has in different areas of the structure thereof different elastomer materials. In upper rib segments oriented toward the belt pulley there is an elastomer material that is not electrically conductive. The lower rib segments are made of an electrically conductive elastomer material. The height ratio a/(a+b) of the height (a) of the lower rib segments to the overall height (a+b) of the rib, as measured at the material boundary located at the rib flank, is at least 6 percent, or the absolute height of the lower rib segments is at least 0.12 mm.

Abstract: A drive belt having a belt body which is made of a flexible material and a tensile reinforcement that extends in belt axial direction and which is surrounded by said belt body in sections at least to improve the tensile strength of the body in belt longitudinal direction wherein the tensile reinforcement is a carbon cord made of a plurality of twisted carbon fibers with a plurality of cavities between the fibers which are charged with a filler material in part at least. A first portion of the carbon fiber cavities is charged with a rupture risk reducing filler of a type different from the belt body flexible material and a second portion of said cavities of the carbon fibers is filled with belt body flexible material. The carbon cord has less than 0.2 mg of belt body flexible material per one millimeter3 cord volume.

Abstract: In a force transmission belt or a conveyor belt, in particular a toothed belt, having a main belt body or a cord embedding zone made of a customary belt elastomer (20), in particular of polyurethane, and having at least one tension member of carbon cord (10; 1, 2) embedded in the elastomer (20), a material (30) is provided, which is enclosed between the strands (1) of the cord (10), and which could have been introduced by applying coatings onto strands (1) of the cord (10), for example. Said filler material (30), which is different from the elastomer (20) in which the carbon cord is embedded, consists of a composition of hydroxyaromates and aldehydes, without any addition of rubber or rubber latex, a hydroxyaromates-aldehyde resin that does not contain rubber, reaction products from hydroxyaromates or hydroxyaromates-aldehyde compositions with isocyanates or isocyanate prepolymers, and/or aromatically or polyaromatically cross-linked polyurethanes, or contains these substances.

Abstract: The use of metal particles inside the belt back (4) of a force transmission belt (1) serves primarily to protect the belt from overheating in transient temperatures of between 100° C. and approximately 400° C. which can occur during operation in motor vehicle engine compartments and in the heat radiation region of exhaust systems. To this end, the force transmission belt (1), which has a main body (3) made of at least one elastomeric material and having a sub-structure and a belt back (4), and a force transmission zone on the sub-structure, has lamella-type or flake-type particles made of metal, particularly aluminium, mixed into the elastomer at least in an outermost layer (5) of the belt back (4).

Abstract: A drive belt having a belt body which is made of a flexible material and a tensile reinforcement that extends in belt axial direction and which is surrounded by said belt body in sections at least to improve the tensile strength of the body in belt longitudinal direction wherein the tensile reinforcement is a carbon cord made of a plurality of twisted carbon fibers with a plurality of cavities between the fibers which are charged with a filler material in part at least. A first portion of the carbon fiber cavities is charged with a rupture risk reducing filler of a type different from the belt body flexible material and a second portion of said cavities of the carbon fibers is filled with belt body flexible material. The carbon cord has less than 0.2 mg of belt body flexible material per one millimeter3 cord volume.

Abstract: A rotationally drivable cutting or milling tool has at least one first cutting tooth effective in a first rotational direction and at least one second cutting tooth effective in a second rotational direction opposite to the first rotational direction. The at least one first cutting tooth and the at least one second cutting tooth have differently oriented cutting edges for performing different machining steps in the first and second rotational directions, respectively.

Abstract: The invention relates to a belt for transmitting a drive motion, comprising a belt body consisting of an elastic material and a carcass that extends in the longitudinal direction of the belt and that is at least partially surrounded by the belt body for increasing the strength of said belt body in the longitudinal direction of the belt. A data memory for saving data is situated in the belt body and at least one piece of information that identifies the belt is stored in the data memory. The drive motion can be enabled and/or disabled in accordance with the information that identifies the belt.

Abstract: A rotationally drivable cutting or milling tool has at least one first cutting tooth effective in a first rotational direction and at least one second cutting tooth effective in a second rotational direction opposite to the first rotational direction. The at least one first cutting tooth and the at least one second cutting tooth have differently oriented cutting edges for performing different machining steps in the first and second rotational directions, respectively.

Abstract: A toothed belt for the transmission of force is provided, a polyurethane body forms an outer layer and may be fabric-reinforced. Teeth of polyurethane are formed on the polyurethane body as an inner layer. High-strength tension elements are disposed between the outer layer and the teeth and are formed of spirally wound, spaced-apart cord filaments. A material layer of wear-resistant material covers the inner peripheral surface of the belt and hence the teeth. The cord filaments can be comprised of polyester-polyacrylate fibers/filaments produced by fusion spinning from liquid crystal polymers, and PBO fibers/filaments. Alternatively, the cord filaments can be comprised of hybrid filaments of high-strength aramid fibers and elastic polyamide fibers, or the hybrid filaments can have a high-strength filament component and a dampening or elastic filament component.

Abstract: A radiation shielding material is manufactured from an elastomer that is blended with a radiation-absorbing filler material. The filler material comprises a powder of a metal with a high atomic member, or compounds thereof. The filler material is represented by more than 80 percent weight and has a grain size distribution in the range of 20 &mgr;m to 120 &mgr;m. The filler material is mixed with a loading material in powdered form. That mixture is kneaded with the elastomer within a mixer while the temperature is maintained below 180° C. The kneaded mixture is cooled and then cut into strips. The strips are passed through a strainer having a mesh width of between 5 &mgr;m and 1000 &mgr;m. The strained strips are then formed into a foil.