Abstract: An improved high performance aluminum connecting rod and a method for manufacturing such a connecting rod are disclosed, the connecting rod being capable of carrying particularly high compressive loads with a substantially reduced deformation resulting from such high compressive loads. In the preferred embodiment, the connecting rod of the present invention is made of an extruded bar stock forging made of an aluminum alloy material which is forged and machined to make the connecting rod. The connecting rod of the present invention has a substantially increased compressive yield strength as well as a substantially increased tensile yield strength. This increase in the compressive yield strength of the connecting rod of the present invention effectively prevents bending of the connecting rod beam, elongation of the wrist pin bore, and a marked deterioration in the roundness of the bearing housing bore.

Abstract: A curved, tetrahelix bicycle crank arm composed of a helical array of tetrahedra is disclosed. This design will transmit the propelling force away from the top dead center point providing more efficient use of the propelling energy. With this tetrahelical design a hollow core is possible that will reduce weight and permit lubrication if needed without reducing strength. This design is also applicable to the connecting rod of internal or external combustion engine.

Abstract: Forged connecting rod, in particular of an internal combustion engine, including a body (1), a connecting rod small end (2) and a connecting rod big end (3), forming two connecting rod small end and connecting rod big end bearings for receiving respectively a piston pin and a crankpin. The connecting rod is constituted by two half connecting rods (5) which are substantially symmetrical relative to a longitudinal median plane (6) of the connecting rod, which plane contains the longitudinal axis of the connecting rod, the joint surface (9) of the half connecting rods being essentially disposed in the median plane (6), the half connecting rods (5), each of which has a connecting rod half bearing (7) and a connecting rod big end half bearing (8).

Abstract: A light-weight bearing cap for attaching a connecting rod to a journal of a crankshaft pin has two longitudinally extending shoulders separated by an arcuate span conforming to the shape of the journal The shoulders are adapted to receive fasteners which connect mating surfaces of the connecting rod to those of the bearing cap. Mass is conserved by ensuring that the inner and outer arcuate surfaces are shaped as arcs of non-concentric circles such that the maximum thickness of the span occurs at the bisecting points of the respective arcs and the minimum thickness of the span occurs in the region between the shoulders and the maximum thickness. The thickness where the machined surface on the shoulder is located is greater than in the region between the shoulder and the region of maximum thickness.

Abstract: A piston pin for connecting a piston to a connecting rod especially but not exclusively of an internal combustion engine is made from a sleeve formed by a non-cutting rolling procedure at formation of a longitudinal slot. The longitudinal slot of the sleeve may extend in a plane defined by the longitudinal axis of the sleeve, or may have a wave-like configuration, or may be formed between longitudinal edges interlocking in the form of a tongue and groove. The outer surface of the piston pin is cylindrical while the interior thereof is formed with a central cylindrical section which terminates on both sides in sloped sections.

Abstract: A connecting rod comprises a rod body having a small end and a base end provided with a threaded hole, and a cap provided with a through hole corresponding to the threaded hole to be joined to the base end of the rod body with screws to form a large end. The joining surface of the base end to which the joining surface of the cap is to be joined is inclined to a plane perpendicular to the longitudinal axis of the rod body. The threaded hole of the base end is formed by tapping a preformed hole by means of advancing a drill from the joining surface of the base end obliquely toward the longitudinal axis of the rod body. The preformed hole has a bottom in a wall forming the rod body, and a chip removing hole is formed in a side surface of the wall of the rod body so as to be connected to the bottom of the preformed hole for the threaded hole.

Abstract: An internal combustion engine comprising: a piston (2) and a cylinder (3), the piston (2) being sealedly mounted to the cylinder (3) and being reciprocally mobile therein between a Top Dead Center (TDC) and a Bottom Dead Center (BDC); also comprising a combustion chamber (4) delimited by the piston (2) and the cylinder (3); a crankshaft (5) provided with a crank (5m) pin (5p); a connecting rod (6) having a small end (6p) rotatably connected to the piston (2) and a big end (6t) rotatably connected to the pin (5p) of the crank (5m) of the crank shaft (5), also comprising at least one cam (7), mounted, rotatably and freely mobile on the big end (6t) of the connecting rod (6) and on the pin (5p) of the crank (5m), which cam (7) by effect of inertia consequent to a rotation of the crank (5m), moves cyclically rotatingly with respect to the pin (5p) and the connecting rod (6) between two operative positions, in which it transmits to the connecting rod (6) an action which adds to the inertia actions of the connectin

Abstract: An improved reciprocating plunger pump boasting a self-aligning plunger assembly, a selectively removable plunger guide cartridge, and an improved seal cartridge assembly.

Abstract: An improved engine output shaft includes a crankpin assembly for operatively connecting the shaft to each reciprocating piston for translating the reciprocating motion of each piston to rotary motion of the shaft through a leverage arm between the axis of rotation of the shaft and the point of operative connection between each piston and the shaft. The crankpin assembly is fixed to rotate with the shaft and defines a plurality of fixed crankpin offsets and transition offsets which sequentially vary the moment arm in a predetermined manner during the rotation of the shaft to produce a substantially constant total engine torque output during each increment of rotational movement. A transition guide system is provided to create a smooth, controlled movement of a connecting rod between the fixed crankpin offsets.

Abstract: A reciprocating compressor includes a driving motor unit having a crank shaft and a compressor unit having a cylinder. A piston having a piston body reciprocates in the cylinder, and a plate-shaped extension piece extends from the piston body along the axial direction thereof. A connecting rod has a crank pin eye formed on one end thereof into which a crank pin of the crank shaft is inserted, and an U-shaped connector formed on the other end thereof for accommodating the extension piece. A piston pin penetrates the extension piece and the U-shaped connector and connects the piston and the connecting rod to relatively rotate.

Abstract: A steel connecting rod that is used mainly in a small-size internal combustion engine includes generally elongated first and second connecting rod forming plates (2) prepared from a steel plate by the use of a press work and having bearing holes (4, 5) defined in opposite ends of each of the first and second connecting rod forming plates (2) in the form of burrings (8, 9). The first and second connecting rod forming plates (2) are joined in face-to-face relation with each other. Bearings (10) are press-fitted into the bearing holes (4, 5) so as to straddle between the burrings (8, 9) at each end of the first and second connecting rod forming plates (2). The height (a) of a corner (11) formed at a radially inner base end of each burring (8, 9) is chosen to be smaller than the plate thickness (t) of each of the first and second connecting rod forming plates (2). Each of the first and second connecting rod forming plates (2) is made from a steel plate that is not heat-treated.

Abstract: The floating wrist pin coupling for a piston assembly will rotate within a bearing assembly for an oscillating connecting rod as a piston cycles through compression and suction strokes. As the wrist pin rotates through 360 degrees, the bearings within the bearing assembly are lubricated and subjected to a rotary rather than an oscillating motion as the connecting rod oscillates.

Abstract: The connecting rod comprises two separate main pieces (34, 36) one of which includes a small-end part (38), a stem part (40) and a big-end fork part (42). The other piece is constituted by a cap (46). The big-end fork part (42) and the cap (46) are retained together by means of respective pairs of interfitting ends situated in correspondence with a diametral plane of the eye of the big-end. The interfitting ends of each pair have mutual coupling formations (48).

Abstract: A one-piece or multi-part connecting rod includes a connecting rod eye, connecting rod shaft and a connecting rod head which is manufactured from at least one sheet metal strip. The sheet metal strip is shaped on both sides with essentially perpendicular fins and is bent normal to its main planed formed cylindrical or semi-cylindrical bearing surfaces about the bearing axes of the connecting rod head and connecting rod eye. The sheet metal pieces are fastenable near the bearing surfaces. The sheet metal connecting rods thus produced can be moved in automobile engines.

Abstract: A two-stroke, U-type uniflow engine includes a cylinder block forming parallel first and second cylinders and a common combustion chamber connecting the first and second cylinders. First and second pistons are mounted for reciprocal, linear movement within the first and second cylinders respectively. The engine also includes a crank shaft having a crank pin and a one-piece forked connecting rod connecting each of the first and second pistons to the crank pin. The connecting rod is elastically, bilaterally flexible to accommodate variations between a maximum distance between the first and second pistons and a minimum distance between the first and second pistons and is in a relaxed state half-way between the maximum distance and the minimum distance. The central wall has a slot for passage of the connecting rod therethrough and angled notches which correspond to maximum angles of the connecting rod.

Abstract: A connecting rod for an internal combustion engine including an elongated rod portion. Also, a first annular portion is integral with a first end of the rod portion. The first annular portion has a bore therethrough for engaging an engine piston pin. Additionally, a second annular portion is integral with a second end of the rod portion. The second annular portion is opposite the first annular portion. The second annular portion is divided into symmetrical halves that form a distal member and a proximal member. Lastly, an alignment portion is integral with each side of the distal member and the proximal member. Whereby, the proximal member and distal member are coupled by placing a rod bolt into each alignment portion.

Abstract: A connecting rod and crankshaft assembly comprising a crankshaft having an axis and including axially spaced end bearing surfaces in concentric relation to the axis, an arcuate throw portion extending from one of the end bearing surfaces and along a curvilinear axis and including a maximum cross section which extends perpendicularly to the curvilinear axis and which includes a maximum rectilinear distance passing through the curvilinear axis, and a crank pin extending from the throw portion in eccentric relation to the axis, a connecting rod comprising an elongated main body, and a crank pin end portion extending from the main body and including a cylindrical surface extending along an axis extending perpendicularly to the elongation of the main body and defining a crank pin aperture receiving the crank pin, and axially spaced side surfaces each including a first side surface portion located adjacent the main body and extending for an arcuate distance around the axis of less than 180 degrees, which first side

Abstract: A piston of a compressor is connected to a motor-driven connecting rod by a piston pin which is inserted into an aperture of the piston and into an opening of the connecting rod which is aligned with the aperture. A first support pin disposed in the piston extends across the aperture to limit the insertion of the piston pin. Then, a second support pin disposed in the piston is pushed manually across the aperture, whereby the piston pin is trapped between the two support pins and cannot be dislodged during operation of the compressor.

Abstract: In a connecting rod of a piston machine which comprises two separate parts which are longitudinally movable relative to one another but operatively interconnected and of which one part is connected to the piston and the other is rotatably mounted on the crank of a crankshaft, the two connecting rod parts are interconnected by a fluid spring structure in which a fluid is utilized as a spring element for operatively interconnecting the connecting rod parts.

Abstract: Disclosed is a manufacturing process of a sintered connecting rod assembly comprising a first member with a projection and a second member with a concavity in which the first member and the second member are mated with each other by engaging the projection with the concavity. A powdered raw material is compacted into a first compact and a second compact for the first and second members, wherein the projection of the first compact has a width slightly larger than the width of the concavity of the second compact. Then the projection of the first compact is engaged with the concavity of the second compact to mate the first compact with the second compact, thereby the projection and the concavity are tightly pressed against each other. After sintering the mated first and second compacts, they are forced to release the projection from the concavity. The die for compacting the raw material has a whole cavity and a removable core for dividing the whole cavity into two cavities.

Abstract: An improved engine output shaft includes a crankpin assembly for operatively connecting the shaft to each reciprocating piston for translating the reciprocating motion of each piston to rotary motion of the shaft through a leverage arm between the axis of rotation of the shaft and the point of operative connection between each piston and the shaft. The crankpin assembly is fixed to rotate with the shaft and defines a plurality of fixed crankpin offsets and transition offsets which sequentially vary the moment arm in a predetermined manner during the rotation of the shaft to produce a substantially constant total engine torque output during each increment of rotational movement.

Abstract: A spherical joint connecting rod. The connecting rod has a small end which terminates in a sphere or ball, and a big end which is adapted to sliding engage an engine crankshaft. The small end and big end of the connecting rod are coupled by a shank having a substantially elliptical cross-section. The shank has formed therethrough an internal oil passage which allows transmission of lubricating/cooling oil from the engine crankshaft to the spherical joint of the piston and to the piston cooling gallery.

Abstract: A two-piece connecting rod for a reciprocating hermetic compressor, of the type comprising a first connecting rod portion (20), including a smaller eye (21) and the rod (22) of the connecting rod, and a second connecting rod portion (30), including a larger eye (31), and further comprising: an engaging element (23), provided at one of the parts defined by the first and second connecting rod portions (20, 30); a receiving housing (32), provided at the other of said parts and shaped in such a way as to receive during the assembly of the connecting rod the engaging element (23), and permit the articulation between the first and second connecting rod portions (20, 30), at a diametral plane common to both the eyes and the geometrical axis of the rod (22) of the connecting rod, and mounting means (40), carried by one of said first and second connecting rod portions (20, 30) and acting on the other of said portions, in order to prevent said portions from moving away from each other, by involuntary mutual axial spaci

Abstract: A connecting-rod has the axes (16) of the cap screws, or bolts, (4) inclined to each other. The big end housing (3,2) is of reduced width and has protruding bearing shells (11). The stem has a cross section of minimum perimeter in the central portion.

Abstract: An engine which employs a cam follower mechanism to reduce wear and reduce the size of an assembled engine. The cam follower mechanism utilizes guide rails located to reduce side thrust on the valve stem. The engine employs a high speed quill shaft to synchronize independent cam shafts existing in each of a plurality of interconnected engines. The engine is assembled using a single size fastener to provide a uniform stress gradient within the engine. The engines are interconnected utilizing O-ring seals. The engine provides a piston crown utilizing a connecting rod directly connected to the bottom surface of the piston crown. The piston crown is stabilized along the longitudinal cylinder axis by a rail guide. Connecting rods are provided which require less than one hundred eighty degrees (180.degree.) circumference of a crankshaft pin for support so that a plurality of connecting rods can be associated with a single crankshaft pin.

Abstract: In an internal combustion engine with a reciprocating movement which uses gasoline, diesel fuel or other fuels to generate forces when fuels attain explosive combustion, the piston is pushed in the inner cylinder. The motion of the piston with the reciprocating movement (straight motion) is transferred to a crank shaft having rotation motion, or the rotation motion of the crank shaft is transferred to the piston having straight motion (reciprocating movement). By such transfer, in order to use in compressed feed for fluids, when the connecting rod is provided with a universal joint type and a ball joint type, although the relative position errors and right angle are staggered within a given range, abnormal friction, noises and vibrations never take place. Accordingly, pollutions such as noise, vibration and noxious exhaust gases are dramatically reduced, fuels are surprisingly and significantly saved, and the life of the machine is doubly increased.

Abstract: A split big end arrangement for the connecting rod of a reciprocating machine wherein the connecting rod's center of gravity is offset from a plane perpendicular to a plane containing the axes of the bearing portions of the connecting rod and passing through the center of the small bearing end. The threaded fasteners holding the halves of the connecting rod together lie in the plane with the center of gravity.

Abstract: According to the present invention a connecting rod is defined by a longitudinally extending beam having, at a first end, a piston pin bearing boss and, at a second end, a crankpin bearing boss. The longitudinally extending beam includes an opening extending from a location near the piston pin bearing boss to a location near the crankpin bearing boss to define opposing webs or legs. Under loads imposed on the connecting rod during the combustion event, the opposing legs exhibit a resiliency which allows inward movement, towards the beam axis. The inward movement of the opposing legs absorbs a portion of the applied load, thereby reducing the amplitude of the force transferred to the crankpin. As the force of the combustion event diminishes through downward movement of the piston in the engine cylinder, the opposing legs move outwardly, away from the beam axis, returning to their original relationship.

Abstract: A connecting rod as a shaft clamping member includes a rod member and cap, each of which has mating faces at circumferentially opposite ends of a semi-circular recess and which are fastened to each other by bolts by matching the opposed mating faces to each other to define a crank pin hole by the two semi-circular recesses. The rod member and the cap are forgings formed from an aluminum alloy and simultaneously produced by forging powder preforms of the rod member and cap in a cavity having the desired shape of the connecting rod. After forging, the opposed mating faces have an infinite number of recesses and projections which are formed from the flow of the material during the forging and which are in a matched and fitted relation to each other. Thus, any misalignment between and in a direction parallel to the mating faces can be prevented to avoid the generation of a situation that only the rod member receives a stress. This achieves a prolongation in the life of the connecting rod of the aluminum alloy.

Abstract: A piston/piston rod assembly wherein a piston is secured to a piston rod, and a sleeve (shell) is secured around the piston rod at predetermined locations along the length of the piston rod. The shell may be removably mounted and made of a harder, heavier material than the piston rod. Segmental sealing rings are provided around the periphery of the piston.

Abstract: The subject of the present invention is a connecting rod, especially for an internal combustion engine, including a shank (1), a connecting rod small end (2) and a connecting rod big end (3), forming two bearings, each intended to receive an articulation journal, said connecting rod consisting of two elements (5) which are substantially symmetric with respect to a longitudinal midplane (6) of the connecting rod, their joining surface (9) being essentially located in said midplane (6), said elements (5) which each bear a small end bearing (7) and a big end half-bearing (8) being joined together by at least one immobilizing means formed in the shank (1) of the connecting rod, said connecting rod being characterized in that the surface of the two half-bearings in contact with the articulation journal includes at least one flat part (13, 15) situated in a region of said surface furthest from the shank (1) of the connecting rod.

Abstract: A flashless metal connecting rod of the type having a one-piece construction and being fracturable into a cap portion and a body portion is produced by providing a precise preform of predetermined dimensions and a precise weight, induction heating the preform to a suitable forging temperature, sequentially compressing the preform between a plurality of unique sets of forging dies. The resulting final forging is both flashless and burrless. Preferably, the sequential compressing of the preform is accomplished through three sets of forging dies which progressively form the precision preform to its ultimate shape.

Abstract: A connecting rod used for a multiple chamber compressor pump comprises a central section having in the main surface thereof an opening for receiving therein a bearing for an eccentric of the multiple compressor pump, at least two pushing sections, and respective hinge areas arranged between the central section and the pushing sections and generating restoring forces, when the pushing sections are deflected relative to the central area.

Abstract: A one-bolt connecting rod for an internal combustion engine, compressor or other machine; a structure for aligning the shank and cap parts of a two-piece connecting rod; an aluminum fastener for aluminum connecting rods; an extrusion process for making connecting rods; and connecting rod parts made by a fine blanking process. In the one-bolt connecting rod, the unbolted junction of the shank and cap is of the hook-on-lug type, and the bolt runs longitudinally through the junction. The alignment structure is on one side a V-junction with contact only between slanting walls and on the other side a junction of two single-plane walls. The aluminum fastener is a threaded aluminum stud.

Abstract: A compressor containing a reciprocating piston connected to a connecting rod by a wrist pin. The wrist pin is floatingly disposed within the wrist pin bore in the piston by two transverse pin members disposed within bores in the piston which locate the wrist pin therebetween. Incidental cylinder bore contact by the wrist pin is prevented by the pin members.

Abstract: A piston-and-control rod assembly includes a hollow piston having a skirt; axially spaced, circumferential piston ring grooves provided in the skirt; a radial crown having an inner face; and a bearing block projecting from a central portion of the inner face and having a bearing bore oriented radially to the piston axis. The bearing bore is situated in a zone approximately radially adjacent the piston ring grooves. The assembly further includes a connecting rod having a main connecting rod body; a head portion located at an end of the main connecting rod body and being laterally offset relative thereto in a direction of offset; and a piston pin affixed to the head portion and projecting unilaterally therefrom in a direction opposite to the direction of offset. The piston pin is received in the bearing bore.

Abstract: An automotive connecting rod made with lightweight alloy such as aluminum, having substantially improved durability and fatigue strength without weight penalty. The fatigue life of the beam section connecting two ends of the rod is increased by providing a special small bolt made with a very high tensile strength material, such as steel, built into the beam section to provide more favorable cyclic load variation at that region. A proper preload is provided to the bolt. The bolt size, its preload, and cross-sectional area of the beam section is calculated by an optimization method which includes the steps of taking into consideration the strength and fatigue characteristics of the lightweight alloy and bolt material used, as well as engine parameters such as stroke, rod length, piston and rod weight, operating temperature and RPM.

Abstract: A connecting rod for a two-cycle internal combustion engine that is composed of a hypereutectic aluminum-silicon alloy containing more than 12% silicon. The alloy contains precipitated particles of silicon having an average particle size less than 50 microns. In contrast to a hypoeutectic aluminum silicon alloy containing less than 12% silicon, the hypereutectic aluminum-silicon alloy has an endurance limit, so that at stresses below about 15,000 psi there will be no failure of the alloy at multiple cycles, making the alloy suitable for use as a connecting rod in a two-cycle engine, which is only subjected to compressive stress in service.

Abstract: A connecting rod having a multiplicity of internal cavities and external pockets that allow optimization of the rod structural properties while minimizing weight. The rod is fabricated as a multiple piece assembly, utilizing wrought materials and metallurgical joining techniques.

Abstract: The design and construction of past piston assemblies having a wrist pin retained by a pair of snap rings positioned in a groove. Other past piston assemblies have a stubpin or cap positioned within a bore of a piston member or the wrist pin. In these applications the stubpin or cap is in continuous contact along the interface between the bore and the stubpin or cap. The present invention provides a device for retaining a wrist pin within a pair of bores of a piston member during operation of an engine. The device includes a shank portion having an outer portion thereon and only the outer portion of the shank portion being in contact with an inner surface of the wrist pin. The device and the wrist pin forming a wrist pin assembly. Thus, the device remains positioned within the inner surface and properly positioned the wrist pin assembly within the bores during operation of an engine within a bore of a cylinder liner.

Abstract: A wrist pin is provided for connecting a connecting rod to a piston, comprising a cylindrical aluminum pin having an outer cylindrical surface, the pin being matingly insertable into a bore of a piston, the outer cylindrical surface having an anodized coating applied thereto. A process for manufacturing a wrist pin is also provided, comprising the steps of machining a cylindrical pin, having an outer cylindrical surface, from aluminum stock; and applying an anodized coating to the outer cylindrical surface. The preferred anodized coating comprises a hardcoat anodized coating.

Abstract: An improved apparatus in an internal combustion engine for causing a piston to remain generally at the top dead center position for a period after the crank has passed top dead center, permitting constant volume combustion of a fuel mixture. A rotatable disc mounted in the upper sleeve end of a connecting rod as an eccentric bore for receiving the wrist pin of a piston. Another eccentric bore in the disc pivotally receives an upper end of a rigid shifter bar. An intermediate portion of the shifter bar is slidably attached to a pin mounted to a lower portion of the piston and a lower portion of the shifter bar is slidably attached to a pin mounted to an intermediate portion of the connecting rod. Thus, angular movement of the connecting rod relative to the pin will cause the shifter bar to rotate the disc imparting an upward motion to the piston to counteract for a time the downward motion of the connecting rod.

Abstract: A connecting rod for a reciprocating piston of an internal combustion engine. The connecting rod includes a two-piece crankpin bearing which is formed by an integral crankpin bearing portion and an arcuate-shaped cap member disposed in mating relationship therewith to attach the connecting rod to a crankpin of a crankshaft. The crankpin bearing includes a wedge-shaped key which cooperates with a tapered key-receiving groove which is dimensioned to permit an initial press fit assembly between the cap member and the crankpin bearing portion. The key and groove facilitate assembly of the cap member to the crankpin bearing portion by providing proper alignment of these components, and further facilitates disassembly of the cap member from the crankpin bearing portion should the connecting rod need repair or replacement.

Abstract: A one-piece piston assembly including a hollow frusto-conical piston is secured to a crankshaft ring via a hollow joint or waist member. Preferably the joint or waist member is frusto-conically shaped as well.

Abstract: A joint structure is provided between a crankshaft rotated within a crankcase of an engine and a connecting rod an end of which is jointed to the crankshaft via a bearing and the other end of which is jointed to a piston reciprocated within a cylinder of the engine. The large end of the crankshaft is provided with an aperture for receiving the crankpin at the other periphery of the crankshaft. The bearing is positioned at the inner periphery of the aperture, and comprises a plurality of needle rollers made of a ceramic material having silicon nitride as one of the main ingredients. A cage is provided for positioning and retaining the plurality of needle rollers at equal intervals along its periphery. The bearing is lubricated by a lubricant contained within a gas mixture supplied to the engine. Since the needle rollers of the bearing are composed of a very hard, light, and heat-resistive material, the junction structure is more reliable and runs well under severe conditions over a longer period of time.

Abstract: A crankshaft and connecting rod assembly, and method of assembling same, including a crankshaft having a tapered end, a crankpin, and a one piece connecting rod having a large end that is slipped over the tapered end of the crankshaft and onto the crankpin. A radially protruding portion is formed on the crankpin such that a leading face of the bearing assembly of the large end abuts the protruding portion. Thereafter, a retaining pin is inserted into a radially extending hole in the crankshaft such that the retaining pin retains a second and opposite bearing surface of the large end of the connecting rod, thereby preventing the connecting rod from excessive axial movement along the crankpin. The retaining pin is preferably a spring-like roll pin that is resiliently and frictionally press fit into the hole.

Abstract: A connecting rod for connecting a reciprocating piston to a rotating crankshaft of an internal combustion engine includes a crankpin bearing designed to seize on a crankpin and stop the engine when the crankpin bearing is operating in a failure mode, as for example due to the loss of oil lubrication. The crankpin bearing design includes a pair of circumferential shoulders formed between the inner circumferential surface of the bearing and the end walls of the bearing which results in the inhibition of heat transfer from the inner circumferential surface toward the outer circumferential surface so that the crankpin bearing expands radially inwardly in a failure mode. Stopping of the crankshaft is also facilitated by varying the torque of each cap screw used to assemble the crankpin bearing.

Abstract: The invention relates to connecting rods for piston engines, made of sintered metal, the connecting-rod shank consisting of two individual booms separated from one another. The object is to connect the individiual booms to the connecting-rod eyes in such a way that the danger of buckling is effectively minimized. The object is achieved in that the arrangement of the connection of the individual booms to the connecting-rod eyes takes place at such an angle and these connections are made so smoothly by means of transitional radii that the force flux between the connecting-rod eyes and the individual booms has an optimum course.

Abstract: A continuously variable drive transmission which includes journals and counterweights which are simultaneously displaced in opposite radial directions by operation of a cam keyed to a rotatable operating shaft extending axially through a crankshaft to vary the eccentricities of each connecting rod big-end and thus vary the throw of the crankshaft.

Abstract: A piston-connecting rod assembly for a crank shaft creates periods of transition, such as dwell, in engines or compressors. The piston, which reciprocates in compression and power strokes, is connected to the connecting rod by upper and lower piston pins. The connecting rod has (a) a lower end portion for connecting the connecting rod to the crank shaft, (b) a central portion having a central portion opening for receiving the lower piston pin, and (c) an upper end portion having an upper end portion opening for receiving the upper piston pin.