Abstract: A pin for bowling and ninepins, wherein the pin is comprised at least 50% by volume of polymeric material, and wherein the base of the pin is comprised at least substantially of wood.

Abstract: The invention relates to a stator for an eccentric screw pump or an eccentric worm motor, including an outer tube that is provided with a lining of rubber or a rubber-like material and has a hollow space or cavity, in the shape of a double or multiple spiral, for accommodating a rigid rotor that is also in the form of a spiral, whereby the stator has one spiral more than does the motor. So that the stator also remains functional under conditions where the fixed connection between the lining and the outer tube could be destroyed, e.g. due to chemical influences or high temperatures, the invention proposes disposing two inner tubes that have apertures in the lining.

Abstract: The invention relates to an apparatus for aerating water, with at least one diffuser element through which air is introduced into the water that is to be aerated. The diffuser element is connected with the distribution tube via a tubular connector. The distribution tube conveys the air, which is compressed for the aeration, and in particular has a quadrilateral cross-section.

Abstract: The invention relates to a stator for an eccentric screw pump or an eccentric worm motor, including an outer tube that is provided with a lining of rubber or a rubber-like material and has a hollow space or cavity, in the shape of a double or multiple spiral, for accommodating a rigid rotor that is also in the form of a spiral, whereby the stator has one spiral more than does the motor. So that the stator also remains functional under conditions where the fixed connection between the lining and the outer tube could be destroyed, e.g. due to chemical influences or high temperatures, the invention proposes disposing two inner tubes that have apertures in the lining.

Abstract: The invention relates to a stator for an eccentric screw pump or an eccentric worm motor having a stator, including an outer tube that is provided with a lining of rubber or a rubber-like material and has a hollow space, in the shape of a double or multiple spiral, for accommodating a rigid rotor that is also in the form of a spiral, whereby the spiral of the stator has one spiral more than does the motor. To provide a stator that also remains functional under conditions where the fixed connection between the lining and the outer tube would be destroyed, e.g. due to chemical influences or high temperatures, the invention proposes that an inner tube provided with apertures is disposed in the lining, and that spacing strips are disposed between outer tube and inner tube.

Abstract: An apparatus for handling pins for ninepins or bowling is provided, and comprises a post that is adapted to be introduced into a bore of a pin and to be held securely in position therein. The post has a conical configuration and tapers toward a free end thereof.

Abstract: A finger roller for agricultural machines is provided. At least one finger disk is disposed on a shaft of the finger roller and has a hub, over the periphery of which are distributed and project a plurality of fingers. The fingers are at least slightly elastically deformable, and a side of each finger that faces in the direction of rotation of the finger roller is markedly roughened, for example by being provided with fine ribs, studs or knobs.

Abstract: The drilling motor is provided that operates pursuant to the Moineau principle for drilling deep holes or wells in the ground. A helically extending rotor is disposed in a stator having a rigid shell that is provided on the inside with an inwardly helically extending lining of elastomeric material for receiving the rotor. The shell has essentially cylindrical end sections having an inner thread for securement of connection elements of the drilling motor. The portion of the shell disposed between the end sections extends helically in conformity with the lining such that at least the lining has an essentially uniform thickness over the length of this portion, which has an outer diameter that is less than that of the end sections. Between the end sections, the shell has a thickness that is less than that of the end sections.

Abstract: A finger roller is provided for agricultural machines, and includes a plurality of elastically deformable finger disks that are disposed on a driven shaft closely adjacent to one another. The hub of each finger disk has a plurality of elastically deformable fingers projecting therefrom. Each hub has at least one insert for increasing its axial rigidity, and/or it is made of a material that is harder than its fingers.

Abstract: A plate-like water aerator is provided. A plate, made of elastomeric material, is disposed on a rigid, essentially planar mounting support and covers the one or more air supply connections thereof. The plate is provided with fine slits for the discharge of air. The mounting support has a circumferential rim that is angled-off at substantially right angles. The mounting support also has a circumferential rib that extends parallel to the rim in such a way as to form a circumferential groove between the rib and the rim. The plate has an essentially u-shaped rim portion, a radially inwardly disposed leg of which surrounds the rim of the mounting support and engages in the circumferential groove in a manner free of play.

Abstract: A Moineau machine has an outer tubular member and an inner tubular member mounted in the outer tubular member whereby the inner tubular member is movable in the axial direction of the outer tubular member but is axially securable in a desired position relative to the outer tubular member. The inner tubular member has an inner surface. An inner elastomer lining is fixedly connected to the inner surface. The inner tubular member has a wall thickness smaller than the outer tubular member. The inner tubular member has opposed ends wherein at least one of the opposed ends is sealed relative to the inner wall of the outer tubular member.

Abstract: A spring element, especially a torsion dampener, is provided, especially for apparatus for raising and lowering windowpanes of motor vehicles. The spring element includes an outer ring, and an inner ring that is concentric to the outer ring. At least one spoke-like element monolithically interconnects the outer and inner rings, with the outer ring, the inner ring and the spoke-like elements all being made of the same material. At least one member of elastomeric material is disposed between and adheres to both the outer and the inner ring. The material of the outer ring, the inner ring and the spoke-like elements is considerably harder than that of the member of elastomeric material.

Abstract: A finger roller for agricultural machines is provided. At least one finger disk is disposed on a shaft of the finger roller and has a hub, over the periphery of which are distributed and project a plurality of fingers. The fingers are at least slightly elastically deformable, and a side of each finger that faces in the direction of rotation of the finger roller is markedly roughened, for example by being provided with fine ribs, studs or knobs.

Abstract: A finger roller for an agricultural implement has a shaft with a non-circular cross-section. Two or more finger disks are pushed onto the shaft in the axial direction of the shaft. The finger disks each have a hub with a central opening having an inner contour configured to match the cross-section of the shaft. The finger disks each have elastically deformable fingers connected to the hub. The fingers of each one of the finger disks are distributed uniformly about a circumference of the hub and project away from the hub. The shaft has a circumferential surface comprised of identical circumferential portions sequentially arranged in the circumferential direction of the shaft. The finger disks each have an odd number of fingers when the circumferential portions are even numbered, and the fingers disks each have an even number of fingers when the circumferential portions are odd numbered.

Abstract: An endless conveyor for conveying tuberous agricultural products has at least two parallel and spaced apart, pull-resistant, flexible belts, extending in the conveying direction of the conveyor. Spaced apart and parallel followers extend perpendicularly to the conveying direction. The followers are connected to the at least two belts. A web is provided that has portions extending between the followers for supporting the tuberous agricultural products. The web has flexible web elements extending angularly to one another and having crossing points. The web elements are connected fixedly to another at the crossing points.

Abstract: An elastomeric stator for an eccentric spiral pump is provided. The stator has a lining that is made of elastomeric material and has a hollow chamber that serves for accommodating a rotor. The hollow chamber has a double or multiple spiral configuration. A rigid casing surrounds the lining and both the casing and the lining have an essentially uniform thickness over their length. The casing is spiraled in conformity with an inner contour of the hollow chamber. A respective flange ring is secured at each end of the casing for resting against other pump parts. The flange rings are detachably connected to other pump parts without the use of tie rods.

Abstract: The method of producing an elastomeric stator, and a stator produced by such method are provided. On its outside, the stator has a metallic spiral body, the shape of which corresponds to that of a hollow pump chamber. Elastomeric material is injected into a mold that contains the spiral body in order to form an elastomeric lining of the body. The elastomeric materials are introduced into the mold in such a way that the outer surface of the elastomeric lining merely rests against the spiral body and is not bonded or otherwise fixedly connected thereto.

Abstract: A roller belt arrangement for a CATERPILLAR (endless track) vehicle has at least one pull resistant belt having a first surface and a second surface opposite the first surface. Drive members are connected to the first surface of the at least one pull resistant belt and extend transversely to a longitudinal extension of the at least one pull-resistant belt. The drive members have a U-shaped foot comprising a stay and two legs, wherein the stay rests on the first surface and the legs project perpendicularly from the first surface. The bolts, having a head and a threaded end opposite the head, are provided for connecting the drive members to the at least one pull-resistant belt. Plate members are non-rotatably positioned between the legs. The bolts penetrate the at least one belt, the stays, and the plate members, with the threaded ends positioned between the legs. Nuts, threaded onto the threaded ends of the bolts, are provided for securing the bolts and are nonrotatably secured relative to the plate members.

Abstract: A conveyor belt for a conveying device is movable in a longitudinal direction thereof on the conveying device and includes at least two pull-resistant, parallel belts extending in the longitudinal direction of the conveyor belt. Bending-resistant rods are connected perpendicularly to the at least two parallel belts so as to be spaced apart from one another. Follower members, including a base with an upper portion and a lower portion, are provided for entraining goods to be conveyed on the conveyor belt. The follower members are connected with the base to the rods such that the upper portion is positioned above the conveying plane of the rods and the lower portion is positioned below the conveying plane. The upper portion and the lower portion are connected to one another with an interlocking hook connection.

Abstract: A water aerator is provided that has a rigid support plate that in the operating position is disposed essentially horizontally. The support plate has a practically planar upper surface and at least one aperture for air. An elastic plate of elastomeric material is disposed on the upper surface of the support plate. The elastic plate is provided with a plurality of fine slits that can be widened by air that is introduced between the support plate and the elastic plate. The elastic plate has a rim that sealingly surrounds the downwardly directed rim of the support plate to be secured thereto in a hook-type manner.