Abstract: A cover body (2) for a valve rotating device includes a ring-shaped upper part (4) and a ring-shaped lower part (6). The upper part (4) and the lower part (6) are axially spaced apart and are adapted to accommodate an axial spring element (24) therebetween. The upper part (4) and the lower part (6) are connected to one another by at least one connecting piece arranged at the location opposite an insertion position of the axial spring element (24). A valve rotating device (12) having such a cover body is also provided. A ring-shaped base body (22) has a plurality of pockets (16) oriented in a circumferential direction, in each of which a ball (14) and a tangential spring (32) are arranged. The pockets (16) have a variable depth in the circumferential direction such that inclined raceways (26) for the balls (14) arranged therein are formed. The tangential springs (32) push the balls (14) toward an end of the respective pocket (16).

Abstract: A valve rotating device has an annular main body, an annular cover body, and an annular axial spring element. The main body has multiple pockets of variable depth so that raceways are formed for balls situated therein, wherein tangential springs press the balls against ends of the pockets in the circumferential direction. The cover body is rotatable relative to the main body about an axis and is axially displaceable, and has an annular first support element, an annular second support element, and a connection, wherein the support elements are axially spaced apart from one another and the connection connects the support elements so that they are fixed relative to one another. The axial spring element at a first end rests on an annular stop surface of the main body, and at a second end rests on a surface of the first support element, wherein the axial spring element is situated between the first support element and the second support element.

Abstract: An anti-extrusion device used in a packer or a bridge plug is disclosed. The anti-extrusion device includes a garter spring and a support assembly having a ring shaped body disposed in an entire circumference of an inner volume of the garter spring. The ring shaped body expands with expansion of the garter spring while maintaining a continuous ring.

Abstract: A valve rotation includes: a first sheet member that extends toward a surrounding of a valve stem under a condition that a rotation action of the first sheet member is suppressed with respect to a cylinder head, and a second sheet member that faces to the first sheet member, that is capable of rotating with respect to the first sheet member and is subjected to a load for opening the valve; a force conversion structure that converts the load for opening the valve applied to the second sheet member into a rotation force.

Abstract: A box lubricator that includes a pump with a piston housing and piston. The piston housing extends from a first end to a second end, and includes a bore extending through the piston housing from the first end of the piston housing to the second end of the piston housing. The piston housing also includes a recess disposed at the second end of the piston housing, the recess being concentric with the bore and comprising a diameter larger than a diameter of the bore. The piston is disposed inside the bore of the piston housing. At least one elastomeric seal is disposed inside the recess of the piston housing and around the piston. In some embodiments, a ball and socket joint connects the piston to the rocker arm assembly. In some embodiments, a fluid passage and a check valve are disposed inside the piston.

Abstract: A hydraulic camshaft adjustment device (1) of the vane type, with a stator (2) and a rotor (3) arranged concentrically and rotatably inside the stator is provided. A locking device (6) for preventing a rotation between the rotor (3) and the stator (2) is arranged between these two components (2, 3) such that a locking element (7) of the locking device (6) creates an interlocking fit that blocks the rotation, the locking element (7) being designed in the nature of a plate.

Abstract: An improved ball type valve rotator is provided that includes a main body segment having a bottom wall with an upper surface, and a body cap that overlies the main body segment. A ball cages assembly is housed between the main body segment and the body cap. The ball cages assembly includes multiple ramps with lower surfaces that are spaced from the bottom wall upper surface of the main body segment. This allows the multiple ramps to deflect toward the bottom wall upper surface of the main body segment. The multiple ramps can deflect independently of each other, so that different distances can be defined between the different ramps and the bottom wall upper surface of the main body segment. In so doing, the ball cage assembly can accommodate non-uniform applications of force into the valve rotator.

Abstract: A spring retainer can reduce the set height and mass of a coil spring. The spring retainer has a retainer body attached to a stem end of a valve and a circumferential plate-like spring part having an inner circumferential part supported by the retainer body and resiliently supporting an end of the valve spring. A spring constant of the plate-like spring part is made higher than a spring constant of the valve spring, so that the plate-like spring part deflects after the valve spring is compressed, to provide a two-step load characteristic and reduce the set height, compressed height, and mass of the valve spring. It can also reduce the height and mass of the spring retainer. A spring system formed by combining the spring retainer and valve spring with each other will be compact and lightweight.

Abstract: A valve rotator for use in an internal combustion engine. The valve rotator including a plurality of retention members, each able to removeably and rotateably couple the stationary housing to the rotating body. The plurality of retention members are defined by a plurality of recesses allowing each of the plurality of retention members to deflect with respect to the stationary housing. The retention members allow the rotating body to be removed from the stationary housing without the need for permanently damaging the stationary housing (e.g. during rebuilding). Additionally, the retention members may be incorporated on housings that have undergone heat treatment processes without rendering the housings susceptible to cracking or damage.

Abstract: An improved ball type valve rotator is provided that includes a main body segment having a bottom wall with an upper surface, and a body cap that overlies the main body segment. A ball cages assembly is housed between the main body segment and the body cap. The ball cages assembly includes multiple ramps with lower surfaces that are spaced from the bottom wall upper surface of the main body segment. This allows the multiple ramps to deflect toward the bottom wall upper surface of the main body segment. The multiple ramps can deflect independently of each other, so that different distances can be defined between the different ramps and the bottom wall upper surface of the main body segment. In so doing, the ball cage assembly can accommodate non-uniform applications of force into the valve rotator.

Abstract: A spring retainer can reduce the set height and mass of a coil spring. The spring retainer has a retainer body attached to a stem end of a valve and a circumferential plate-like spring part having an inner circumferential part supported by the retainer body and resiliently supporting an end of the valve spring. A spring constant of the plate-like spring part is made higher than a spring constant of the valve spring, so that the plate-like spring part deflects after the valve spring is compressed, to provide a two-step load characteristic and reduce the set height, compressed height, and mass of the valve spring. It can also reduce the height and mass of the spring retainer. A spring system formed by combining the spring retainer and valve spring with each other will be compact and lightweight.

Abstract: A valve rotating mechanism for exhaust valves, especially of marine diesel engines, which mechanism is braced in a valve housing for the valve stem (1) between an upper and a lower drive element, is linked to the lower drive element via a freewheel device, which transmits rotation of the valve stem (1) during closing movement thereof, and is also braced relative to the upper drive element via a rotary cylinder (15), which brings about rotation of the valve stem (1) through engagement with a fixed support cylinder (13). Therein the rotary cylinder (15) and support cylinder (13) are engaged with one another via a helical gearing, wherein the rotary cylinder (15) is linked to the valve stem (1) via the freewheel device and the support cylinder (13) is fastened on the housing side.

Abstract: The invention relates to a valve rotator having an annular body in which are circumferentially provided several ball pockets having inclined ball races and in which a ball and a tangential spring are located in each case. In a rest position, the tangential springs press the balls at an upper point of the inclined ball races. An annular cover is also provided, which is rotatable and axially displaceable relative to the body. There is also an axial spring device between the body and the cover, the axial spring device pressing them apart axially in the rest position and if a valve spring tension is applied the body and the cover are pressed axially against one another and the balls roll along the ball races to a lower point. There is a clearly defined rotation between the body and the cover. A drastic reduction of wear is brought about in that the axial spring device is spaced from the balls and on one axial side of the axial spring device is provided a pivot bearing. The balls are in contact with the cover.

Abstract: A rotary driven reciprocating mechanism and method permit a rotary motion to be converted into a reciprocating motion that may be used to control the operation of various devices. For example, in a preferred embodiment, the rotary driven reciprocating mechanism may be used for electronic valve timing control in an internal combustion engine. The rotary driven reciprocating mechanism may also be used as a pump valve timing mechanism or for any other purpose in which it is desirable to convert rotary motion into reciprocating motion.

Abstract: A device for rotating a valve for producing rotations of a gas charging valve in an internal combustion engine during its opening and closing movements. The device has a basic body having a plurality of pockets oriented in a peripheral direction for receiving rolling bodies. There is also a valve shaft disposed in the basic body. In addition, there is also a plurality of rolling bodies and a plurality of tangential springs for holding the plurality of rolling bodies adjacent to the plurality of pockets on the basic body. Finally, there is a cover serving as a valve spring support and force transmitter or energy reservoir for each of the valve rotations, wherein the basic body and the cover consist of reshaped metal components. This design allows for a simple construction process resulting in lower manufacture costs.

Abstract: The invention aims at achieving better filling of the cylinders located in the body of the valve (1) by implanting valves (2) with an elliptical head (3) whose linear opening/closing movement is complemented by a lateral rotation with a 55° amplitude, said rotational movement being accomplished by using a guide (8) having two symmetrical and helicoidal tracks (9) on which two pivots (10) that are provided for said purpose can slide on points diagonally opposite to the stem pertaining to the corresponding valve (2). The overhead with the composite movement elliptical valves can be used in all internal combustion engines such as spark ignition or compression ignition internal combustion engines regardless of the number of cylinders and their utilization.

Abstract: A device for relative angular adjustment between two drive-connected elements rotating at the same rotational speed, in particular between a chain wheel and a camshaft of an internal combustion engine, includes, as an actuating drive, an electrically commutated electric motor with, as coil part, a stator arranged fixedly relative to the housing.

Abstract: The invention aims at achieving better filling of the cylinders located in the body of the valve (1) by implanting valves (2) with an elliptical head (3) whose linear opening/closing movement is complemented by a lateral rotation with a 55° amplitude, said rotational movement being accomplished by using a guide (8) having two symmetrical and helicoidal tracks (9) on which two pivots (10) that are provided for said purpose can slide on points diagonally opposite to the stem pertaining to the corresponding valve (2). The overhead with the composite movement elliptical valves can be used in all internal combustion engines such as spark ignition or compression ignition internal combustion engines regardless of the number of cylinders and their utilization.