Abstract: A device for attenuating sound in and of wheels, the wheel having a rim portion, a hub, and a web in between, there being a radially inwardly oriented flange surface, is improved by an attenuating layer on or in a groove of the flange surface, possibly with an extension against the web, and a cover, radially outwardly, and axially urging the attenuating layer upon the flange and the web.

Abstract: A conjugate gear system including a pair of meshingly engageable toothed gears, at least one member of the gear pair having at least one three-component tooth. Each three-component tooth is comprised of a central core, at least one face disposed thereon, and a means for displaceably attaching the face section to the core such that the face section is displaceable with respect to the core in the direction of the sliding component of motion created by meshing engagement of the gear pair. By separating out the sliding component in this fashion, relatively pure rolling contact is maintained between the engaged surfaces of the gear pair at all times, thus reducing sliding friction, thermal expansion, and noise levels created by the engagement of the gears.

Abstract: Unequal loading in multiple load path transmissions having independent gear trains 18, 20, interconnecting an input and an output shaft 12 and 14, respectively, is avoided through the use of a torsionally compliant gear 22 located in each gear train 18 and 20. Each torsionally compliant gear 22 includes a hub 40 and a ring 46 having external gear teeth 48 about the hub 40 in concentric spaced relation. A body 50 of elastomeric material is disposed between the hub 40 and the ring 46 and spring fingers 68 carried by the ring 46 at least somewhat radially extend toward the hub 40. Stops 84 are carried by the hub 40 and are positioned to be normally spaced from the spring fingers 68 when low loads are transmitted by the gear and to engage the spring fingers 68 when predetermined higher loads are to be transmitted by the gear.

Abstract: A damping system for a fabricated gear comprising a plurality of viscoelastic sheets sandwiched between damping plates and side plates, the side plates having circumferential rings which act as mode converters to change in-plane vibration to bending mode vibrations and are fixed to one margin of the damping plate to provide effective vibration damping within the gear.

Abstract: A drive axle with a gear ring meshing with a drive pinion is designed with silent running properties, in that an intermediate member is secured to the differential carrier and is connected to the gear ring by an elastic coupling. Between the contacting faces of the gear ring and the intermediate member there are annular grooves and a cylindrical space is formed between an inner face of the gear ring and an outer cylindrical face of the intermediate member. The cylindrical space and the annular rings are filled with a viscous substance.

Abstract: In a manual power transmission for automotive vehicles, a gear noise suppressor and vibration isolator includes elastomeric sleeve preferably fitted within several holes through the thickness of the gear wheel, angularly spaced about the axis of the wheel. The spacers define a space within which a metal sleeve is inserted and the sleeve defines a central bore through which a pin is fitted. A load plate located adjacent an end face of gear wheel has teeth formed on its outer periphery which are adapted to mesh with the teeth of an input pinion with which the gear wheel is continuously engaged. Pins having a headed end that abuts the load plate hold the plate in contact with the elastomeric sleeves and prevent contact of the load plate against the gear wheel. The sleeves resiliently deflect and permit engagement of the load plate and gear wheel with the drive pinion.

Abstract: A torsional vibration viscous damper coupling arrangement for a manual transmission countershaft. The coupling includes a first driven gear journalled on the countershaft and in constant mesh with the input shaft gear. A second driven gear is fixed on the countershaft and is in constant mesh with a speed gear journalled on the main shaft. The first and second driven gears each have a set of longitudinally extending mirror image axial teeth sized to mesh in a loose fitting manner. A diametrical through-bore extends through the countershaft intermediate the first and second driven gears. The spaces between the teeth communicate with the through-bore to define a viscous fluid chamber enclosed by a sleeve surrounding the meshed teeth and sealed to the driven gears. Viscous fluid in the chamber provides a dampening medium obviating the transfer of torsion vibrations from the input shaft to the countershaft.

Abstract: A compliant gear which includes an inner hub portion, an outer ring gear portion, and a compliant laminate between the hub portion and the ring gear portion. The laminate includes a rigid laminar shim of generally uniform thickness sandwiched between a pair of elastomer layers of generally uniform thickness. The laminar shim and the elastomer layers extend generally parallel to the axis of rotation of the gear.

Abstract: An arrangement for dampening a transmission synchronizer. A plurality of T-shaped shoes are disclosed for assembly on the jaw toothed shoulder of the synchronizer main gear. The shoulder has a plurality of chordal flats with a radial bore formed therein. Each T-shaped shoe is molded of resilient material and includes a cross head portion and a stem for reception in its associated radial bore. The synchronizer stop ring has selected individual ones of its internal teeth omitted creating slots defined by the omitted tooth together with the adjacent root spaces. The cross head is sized to snugly contact the opposed flanks of the adjacent stop ring teeth. By urging the stop ring internal teeth into a neutral centered position with the gear teeth the invention obviates stop ring rattle by eliminating play between the stop ring and the main gear.

Abstract: A chordal action isolation wheel assembly for reduction of noise in track-laying vehicles by using a pendulous isolation wheel to isolate chordal track forces from a smaller drive sprocket. The drive sprocket is mounted on a drive shaft and one end of a pendulous arm is rotatably connected to the drive shaft. The isolation wheel is rotatably mounted on the other end of the pendulous arm and an endless track is trained about both the isolation wheel and the drive sprocket with only a small portion of the periphery of the drive sprocket contacting the endless track. The larger diameter of the isolation wheel causes a gentle lowering of the endless track onto the drive sprocket to reduce the force transmitted to the sprocket wheel and reduced noise. Chordal impacts of the track shoes occur against the isolation wheel, and the resulting vibrational energy is absorbed by the pendulous action of the isolation wheel assembly.

Abstract: A rail wheel has in one of its rim surfaces, preferably the inner one, a circumferential undercut groove. Vibration-damping elements are connected to the wheel by means of screws which either engage in the undercut groove via appropriately shaped heads, or are threaded into wedges lodged in the groove.

Abstract: In a labeling machine comprising a machine frame (1), a turret (2) in said frame, a concentrically disposed gear (12) carried by said turret for rotation of said turret, a plurality of turntables (3) carried by said turret, a drive (8,9) mounted in the machine frame, a pinion (10) driven by said drive and driving said concentrically disposed gear and turret, an infeed starwheel (4) and an outfeed starwheel (7) each meshing (13,14) with the concentrically disposed gear, and a labeling station (6) driven by a pinion (15) meshing with the turret gear, the improvement which comprises providing each gear (13,14) of the infeed and outfeed starwheels (4,7), of each pinion (10,15) of the drive (8,9) and of the labeling station (6), and any further pinions (18,20) meshing with the gear (12) of the turret (2) and driving, in synchronism with the turret (2), other mechanisms mounted in the machine frame, with a hub (42) a toothed ring (43) and a damping element (41,47-52) between each hub and toothed ring so as to isola

Abstract: A swivel joint, especially for seats with an adjustable back rest, comprises two link members connected to each other by a pivot pin and a device for angularly adjusting the two link members with respect to each other and for holding the same in any adjusted position and comprising an internal spur integral with one link member and meshing with a spur gear integral with the other link member in which one of the gears is mounted on an eccentric portion of a pivot pin, wherein at least one and preferably both gears are provided at the base lands thereof with elastic buffer elements for compensating tolerances and for eliminating noise.

Abstract: A gear, chiefly for use in timepieces, acoustic devices and like precision apparatus, is made of an elastic material and comprises teeth alternately arranged in two rows, that is, a front and rear row and axially positioned away from one another. Each of the teeth has a leg extending from the main body of the gear and a meshing portion integral with the outer end of the leg and engageable with another gear with which it is adapted to mesh. The legs of each two adjacent teeth in each of the front and rear rows are spaced apart from each other circumferentially of the gear by a specified distance to render the teeth elastically deformable for cushioning and thereby eliminate noise when the gear meshes with another gear. Even when the gear has a small module, the legs of the teeth in each of the front and rear rows can be spaced apart by a large distance, so that the gear can be formed easily, for example, by injection molding.

Abstract: A wheel for rail vehicles with at least one disc which is connected to an axle, and with a wheel rim having a tread or surface surrounding the disc, while the rail tread in engagement with the rim tread results in contacting points of the wheel during straight forward drive of the vehicle located on the tread or track of the rails. At least within that region of the rim which contains the above mentioned rail contacting points of the wheel rim the wheel rim is turnably connected to the disc for turning about an imaginary axis located in about the driving direction of the wheel.

Abstract: A marine drive is shown in which a reverse pinion, which is in continuous mesh with a bull gear, is provided with a detuner to prevent vibration while it idles. The detuner includes a ring gear detuner pinion disposed about the reverse pinion shaft. The detuner pinion has helical teeth as do the reverse pinion and bull gear. One end of the detuner pinion is slidably mounted on a ring which encircles the reverse pinion shaft adjacent the reverse pinion, and the other end of the detuner pinion is supported by a diaphragm assembly which prevents torsional and radial motion but permits axial movement of the detuner pinion. The diaphragm assembly is mounted on a sleeve which is secured to the pinion shaft and extends through, but out of contact with, the detuner pinion.

Abstract: A vibration damping assembly for a wheel or the like that undergoes rotation is achieved by providing an annular groove in a surface of the wheel coaxial with the wheel axis. An annular metal ring formed from a channel member generally U-shaped in cross-section is positioned with one of its legs within the annular groove substantially encased therein by a vibration damping material. The remainder of the channel member extends close to areas of the wheel that are adjacent to the groove, and vibration damping material is sandwiched between the wheel and the channel member. Vibration damping material subject to shear deformation during rotation of the wheel is used, along with vibration damping material subject to deformation in tension and compression.

Abstract: A gear wheel is provided with a split damping ring on each side having a close fit with the inside of the rim of the gear wheel. The rings are anchored at points remote from their split ends to the web of the wheel. A tapered bolt and nut assembly cooperate to wedge the ringsagainst the gear rim. Elastomer type ring washers associated with such bolt and nut assembly are pinched tightly thereby to the gear rim.

Abstract: A low stiffness elastomer mounting arrangement for a ceramic regenerator core comprising an elastomer cushion between a ceramic, circular regenerator core and a surrounding ring gear, portions of the elastomer being bonded to the interior surface of the ring gear and other portions of the elastomer being bonded to the outer periphery of the ceramic regenerator core, the location of the bonds between the elastomer and the ring gear being tangentially offset with respect to the location of the bonds between the elastomer and the regenerator core, adjacent bonds on the ring gear and on the periphery of the regenerator core being tangentially spaced one with respect to the other, the elastomer forming a load transmitting beam construction that is not bonded to either the ring gear or the core whereby driving forces are transmitted from the ring gear to the core while the elastomer compensates for differential expansion of the ceramic core and the ring gear thus avoiding radial stresses and compression loads on th

Abstract: A vibration damping assembly for a wheel or the like that undergoes rotation is achieved by providing an annular groove in a surface of the wheel which is coaxial with the axis of the wheel. A viscoelastic damping material subject to shear deformation during rotation of the wheel is positioned within the groove against the surface of the groove, and an annular metal ring is positioned in the groove against the viscoelastic damping material with the damping material sandwiched between the ring and wheel.

Abstract: A regenerator drive system for a ceramic circular regenerator core comprising a cylindrical matrix adapted to be mounted for rotation about its central axis, said ceramic core having axial gas flow passages adapted, when it is installed in an engine, to accommodate flow therethrough of high temperature combustion gases and relatively cool combustor intake gases, a metallic ring gear surrounding the periphery of said core and radially spaced therefrom, an elastomeric lug and groove drive means situated between said core and said ring gear for distributing tangential driving forces therebetween, said drive means comprising a first series of elastomeric drive lugs bonded to the inner periphery of said ring gear at tangentially spaced locations and a second series of elastomeric drive lugs bonded to the external surface of the periphery of said core at tangentially spaced locations and in registry with the spaces between the drive lugs on said ring gear, said drive lugs having sufficient clearance therebetween to

Abstract: A high speed tracked vehicle has a sprocket extending from each side thereof coupled to an engine through which driving power is supplied to each of a pair of driving tracks. The driving tracks are supported on either side of the vehicle hull by an idler wheel and the driving sprocket. A plurality of ground wheels distributes the vehicle weight over that portion of the tracks in contact with the surface underlying the vehicle. The tracks include a plurality of interconnected shoes each of which includes an inner elastomeric insert disposed to contact the idler wheel at the rim. Idler wheel rim and track shoe contact being a source of mechanical vibrations causing internal hull noise, one or more continuous peripheral ridges or crowns are formed on the rims so that the area of contact between the rims and the elastomeric inserts is reduced and the compliance of the system is increased.

Abstract: The present noise damping apparatus is especially intended for damping the noise caused by wheels running on rails. For this purpose there is provided a noise screen connected to at least one surface of the rail wheel in a force transmitting, yet removable manner. The noise screen comprises vibration damping reed members. This screen prevents noise generated by the wheel proper from radiating outwardly and it also acts as a noise absorber for the impact noise propagating in the wheel and other solid bodies.

Abstract: A gear wheel having a rim with a plurality of teeth around the periphery thereof, a hub within the rim, spokes connected between the rim and the hub, sound absorbing material filling the spaces between the spokes for silencing the noise caused by vibration of the gear wheel, and side plates attached to the rim, hub and spokes and completely covering the openings from the spaces between the spokes for confining the sound absorbing material in the spaces.

Abstract: A rotary disc-type counterflow regenerator for a gas turbine engine includes a disc-shaped ceramic core surrounded by a metal rim which carries a coaxial annular ring gear. Bonding of the metal rim to the ceramic core is accomplished by constructing the metal rim in three integral portions: a driving portion disposed adjacent the ceramic core which carries the ring gear, a bonding portion disposed further away from the ceramic core and which is bonded thereto by elastomeric pads, and a connecting portion connecting the bonding portion to the driving portion. The elastomeric pads are bonded to radially flexible mounts formed as part of the metal rim by circumferential slots in the transition portion and lateral slots extending from one end of the circumferential slots across the bonding portion of the rim.

Abstract: A rotary regenerator construction comprising a ceramic core adapted to rotate upon its central axis and a ring gear surrounding the periphery of the core for purposes of driving the core rotatably and a yieldable compliant ring sandwiched between the ring gear and the periphery of the core to prevent stresses in the core caused by differential rates of expansion of the core and the ring during operation of the regenerator in a gas turbine engine and during processing of the regenerator and the regenerator drive ring.

Abstract: A regenerator assembly for a gas turbine engine includes a center driven, rotatable disc type ceramic core with a hub and drive shaft including a chain driven sprocket fixedly secured thereto and wherein damper means including first and second relatively movable parts are connected between the sprocket and hub and a resiliently yieldable slipper is located in the hub and compressible to accept hub loads without taking a permanent set; the damper means and slipper combining to damp oscillations in said matrix disc drive shaft during operation of the regenerator assembly and further operative to isolate frangible material of the core from shocks imposed thereon by the drive thereto.

Abstract: A noise reduction apparatus for a carrier roller in a crawler tractor, which includes first and second dimpled, annular guard members, each having a steel plate with a noise-absorbing member bonded thereto, and a third annular guard member having a noise-absorbing member and a layer of vibration damping material. The first and second guard members are removably secured to the opposite side faces of the carrier roller, while the third guard member is closely fitted, through the medium of the layer of the aforesaid vibration damping material, into an annular groove defined about the periphery of the central portion of the carrier roller. The noise-absorbing members of the first and second guard members are positioned on the respective inner surfaces of the steel plates.

Abstract: An improved chain drive sprocket or the like in the form of a sprocket member. The composite sprocket member includes a metallic hub portion having T-shaped lands and T-shaped grooves formed on the outer periphery thereof coaxial with the axis of rotation of the hub portion, and a toothed ring formed of synthetic resin material having an aperture formed therein with T-shaped lands and T-shaped grooves formed on the inner periphery thereof sized and shaped for close sliding coaxial engagement with the corresponding lands and grooves of the hub portion. The hub portion is preferably formed of sintered steel powder impregnated with cupreous alloy. The toothed ring portion is preferably formed of nylon. The drive sprocket may be employed in combination with the power output shaft from a motorcycle power transmission. The composite member may be slightly modified to form a composite spur gear or the like.

Abstract: A biasing element has a force transmitting material positioned within a chamber of a housing having deflectable walls. A piston contacts and moves the force transmitting material into forcible contact with the housing walls in response to movement of the piston. Further movement of the piston deflects the housing walls in response to forces from the force transmitting material in the housing.

Abstract: A highly safe device for reducing noise produced in gear wheel couplings in the motion transmission and distribution lines of wrapping and packeting machines operated at very high output speed. Two co-axial and opposite gears have the same number of angularly coincident teeth, one of the gears being formed of rigid metal material and the other consisting of tough and elastically yielding material.

Abstract: A rotatable track supporting member for a track-type vehicle has a hub rotatably carried upon a track frame of such vehicle and a rim which is constructed from segmented resilient material so as to reduce the amount of noise generated by the running engagement between the rim and an endless track chain mounted for movement about the track frame.

Abstract: A wheel for carrying continuous track of crawler type vehicles has a set of spaced pairs of inner and outer panel members that are connected together through vibration barriers. One of the inner or outer panels is formed of a laminate.

Abstract: A track wheel of a crawler type vehicle has a plurality of first and second plates spaced at preselected locations for suppressing vibration of and resultant noise emitting from panels of the wheel.

Abstract: Reaction moment, acting upon the crankcase of a conventional engine when the crankshaft is accelerated or decelerated, is minimized by the provision of a balance shaft carrying a weighted mass and arranged in parallel with the crankshaft and transmission means including a pair of intermeshing gears of an appropriate gear ratio mounted on the two parallel shafts. One of the gears in mesh is divided in two gear sections which is resiliently connected to the associated shaft normally to have an appropriate amount of phase shift therebetween to eliminate backlash.

Abstract: A regenerative heat-exchanger of a gas turbine whose ceramic heat-exchanger disk is coaxially surrounded by a metallic toothed rim under formation of an annular space in which are arranged springs; the springs are constituted by spring packets of cup springs which are guided on both sides in concave recesses in two webs arranged in the circumferential direction on entrainment plates which surround the lateral surfaces of the toothed rim and are non-rotatably connected therewith.

Abstract: An idler for use in a bulldozer, etc., comprising an idler proper having an annular groove on its peripheral surface and a shock-absorbing member fitted in said annular groove. Thus the shock-absorbing member can be made sufficiently thick to minimize impulsive noises during operation.

Abstract: A rack and pinion steering arrangement for a vehicle, preferably including a rack and pinion steering mechanism having a gearbox and a diagonally rigid holding casing encompassing the gearbox with frictional engagement by way of an elastic and intermediate layer with said holding casing being directly attachable to a fixed vehicle front-axle support. Various preferred embodiments include constructional features assuring non-rotation of the gearbox as well as a firm elastic clamping action on the gearbox by way of the intermediate layer around the periphery of the gearbox.