Abstract: A bearing holder comprises a plurality of pawls engaged with an internal surface of the bearing containing part, a plurality of slots arranged in circumferences of the pawls, and bearing-contacting part in contact with an outer periphery of the bearing. It is used for holding the bearing supporting an armature shaft of a motor equipped with reduction gear, for example.

Abstract: In a positive displacement machine, a rotor has screw grooves in which pressure chambers are variably limited, at one end, by teeth of a plastic pinion which is the front element of a composite pinion meshing with the grooves. A metal backing pinion supports the plastic pinion. The metal pinion and plastic pinion are rotatable with respect to each other about the axis of rotation of the composite pinion, in conjunction with a deformation of a resilient angular coupling provided between them. This coupling is a metal blade at least partly surrounding the backing pinion shaft between the plastic pinion and the backing pinion, in a groove of the backing pinion. One end of the blade is secured to the plastic pinion, the other end of the blade is secured to the backing pinion. Several embodiments of the blade are disclosed.

Abstract: The disclosed clamping plate exhibits a particularly great spring action and it includes a clamping rim (10) and with spring tabs (20) which point radially inward and against which the cups of the self-aligning or cup-type bearing make contact. According to the invention the spring tabs (20) are particularly long and extend from the clamping rim (10). The tabs also bend inwardly over a bead (9) limiting the clamping rim (10). An especially inexpensive design from the aspect of production engineering and assembly is achieved in that the transition from the bead (9) to the plug-in hole (2) is rounded in the plug-in direction (6) of the clamping plate and the lower area of the bead (9) is designed as oil collecting groove.

Abstract: A resonant frequency reciprocating print bar drive mechanism having print bar assembly mass 12 and counterweight 13 held in spaced relationship to each other by first and second leaf springs 16 and 17, which are of equal flexural stiffness. Drive solenoid 14 is mounted between the first and second springs 16 and 17, for inducing reciprocal oscillation between print bar 12 and counterweight 13. The print bar assembly, counterweight and spring assembly is itself suspended as a single unit from perimeter frame 11 by suspension springs 15. Suspension springs 15 have a much lower spring rate than that of leaf springs 16 and 17, and, as a result, the print bar assembly 12 and counterweight 13 will reciprocally oscillate, relative to each other, at a single resonant frequency.

Abstract: The inwardly facing portions of annular springs adjacent the inner edge thereof are formed into two or more regions of predetermined angular or curved slopes and radial extent. When the peak of a shaft cam passes an annular set of ball bearings between the springs, the loaded springs unload at a rate determined by each region slope and the radial extent of the regions to consecutively drive the shaft at corresponding rates and forces. To precisely obtain the desired spring characteristics, a composite spring can be used formed from a steel spring sandwiched together with a plastic member (e.g., nylon).

Abstract: A friction clutch wherein the diaphragm spring is installed between two annular seats which are carried by the clutch cover. At least one side of the spring has a set of radially extending reinforcing projections each of which extends in part into the annular main (outer) section and into one of the radially inwardly extending prongs. The respective seat has recesses for intermediate portions of such projections. The diaphragm spring is made of special spring steel and the recesses can be formed by deformation of and/or removal of material from the respective seat or seats.

Abstract: An automatic adjustment device for internal shoe brakes, comprises a fixed housing disposed interiorly of a rotating brake drum, a slidably guided, non-rotatable, axially displaceable pressure element disposed in the housing and operated mechanically or by a pressurized fluid, the pressure element acting on the brake shoe via a rotatable adjustment bushing and an adjusting bolt which is screw-connected to the adjustment bushing and is non-rotatably connected to the brake shoe, and a ring rotatably mounted in the pressure element. A first end face of the ring rests against a spring which presses against the base of the pressure element, and a second end face of the ring rests against the end face of the adjustment bushing which extends into the interior of the pressure element. The ring has an inclined slot engaged by a pin element affixed to the housing. The mutually facing end faces of the ring and adjustment bushing form a ratchet-like unidirectional clutch.

Abstract: A diaphragm spring for use in friction clutches of motor vehicles has an annular main section and prongs which extend outwardly from the outermost part and/or inwardly from the innermost part of the main section. At least some of the prongs are reinforced by radially extending ribs each of which further extends radially across a portion of or across the entire main section. The ribs reduce the likelihood of breakage of the respective prongs in the regions where such prongs merge into the main section. Some outwardly extending prongs of the diaphragm spring are secured directly to the flywheel and the remaining outwardly extending prongs bear against a pressure plate of the friction clutch to urge a clutch disc against the adjacent side of the flywheel.

Abstract: A housing of a rotary piston internal combustion engine of trochoidal type of construction consists of two side parts and at least one mantle part with dual-curvature mantle runway and a center part between the two mantle parts, which parts are connected by adjustable bolts directed axially as arranged along the radial periphery of the housing. An eccentric shaft passes through the housing and a triangular rotary piston turns upon the eccentric of the eccentric shaft. Clamping rings are provided at each of two ends of the housing.

Abstract: A solid spring disc is made of resiliently yieldable material and is shaped as a shallow cone whose upper and lower surfaces are corrugated and are defined by a plurality of angularly spaced triangular segments of identical size and shape and disposed in adjoining side-by-side relation. The substantially linear force/deflection range of the spring disc is significantly longer than that of a conventional Belleville spring of comparable size and thus the spring disc possesses a substantially lower spring rate.

Abstract: It is known to use springs to deploy steering fins on board projectiles, each fin having its own spring and a separate mechanism for latching it in its deployed position. Described herein is an integral spring/latching mechanism which is operable to deploy a plurality of fins and then to latch them in their deployed positions. The mechanism comprises a single piece of spring material which is formed such that a first portion engages with the projectile body and a plurality of second portions each exerting a spring force on respective fins to deploy the fin and to latch it in its deployed position, the second portions extending radially outward with respect to the first portion when deploying the fins.

Abstract: A print head for use in an impact printer has resilient driving arms for actuating print hammer or print elements at a high speed. The arms extend radially inwardly, and are connected together at their outer ends and formed of a single rolled metal. The arms differ in at least one of length, width, thickness or shape, according to the angles that the longitudinal directions of the hammers make with the direction in which the metal has been rolled, so that the hammer can have the same natural frequency or produce the same resilient force.

Abstract: A foil thrust bearing having an underspring with alternating upper ridges and lower ridges.

Abstract: A friction clutch wherein the prongs of the diaphragm spring are formed with half spoon-shaped vanes each of which is adjacent to one edge face of the respective prong and serves to circulate air when the spring rotates. Each prong is further formed with a reinforcing rib which extends radially outwardly from the respective vane and into the ring-shaped main section of the spring. The ribs stiffen the prongs and prevent them from bending during actuation of the clutch, namely while the tips of the prongs are pushed or pulled in a direction to relax the bias of the spring upon the pressure plate of the clutch.

Abstract: In a clutch release bearing suitable for automotive vehicles a drive member is retained to a maneuvering member in the axial direction by an axially acting spring washer. This bears on a first shoulder on the maneuvering member and urges the drive member in the axial direction towards a second shoulder on the maneuvering member. The first shoulder is locally intersected by at least one axially extending groove which is accessible from the outside, for the purpose of inserting an assembly tool.

Abstract: A diaphragm spring, particularly for use in friction clutches, has a circumferentially complete outer marginal portion and an annulus of radially inwardly extending prongs which alternate with elongated slots and whose tips surround a centrally located opening communicating with the inner end portions of the slots. The intermediate portions of at least some of the prongs are offset with reference to the intermediate portions of the neighboring prongs, as considered in the axial direction of the spring, to provide passages, constituting enlarged portions of the respective slots, which allow for and can promote circulation of large quantities of cooling air when the diaphragm spring rotates with the cover of a friction clutch. The offset intermediate portions of the prongs have an arcuate shape and can be twisted, not unlike the blades of a screw propeller, to further promote the flow of air through the passages.

Abstract: A friction clutch comprises a cover member, a pressure plate mounted to the cover member by drive straps and a diaphragm spring interposed between the cover member and pressure plate so as to urge the pressure plate towards and into frictional engagement with a driven plate. The diaphragm spring has the usual outer belville portion and inwardly projecting fingers. The outer parts of the fingers themselves and particularly the junctions with the belville portion are stiffened by stiffening ribs which resist finger bending and thus reduce release travel. The ribs extend into and terminate within the belville portion without reaching its outer periphery. Fulcrum rings such as 17 incorporate raised bridge portions to provide clearance for the ribs.

Abstract: A diaphragm spring which can be used in a friction clutch for automotive vehicles has a circumferentially complete annular section and elongated fingers extending radially inwardly from the annular section and having inner end portions of substantially uniform width, as considered in the circumferential direction of the annular section. The slots between neighboring fingers include alternating narrower and wider slots, and the slots have enlarged outermost portions in the region of the annular section. The width of the outermost portion of each wider slot equals twice the width of the outermost portion of a narrower slot plus the width of the outermost portion of a finger. The width of the innermost portions of the slots is uniform, and the spring is secured to the cover of a clutch by rivets whose shanks extend through the outermost portions of the narrower slots. The end faces of the inner end portions of the fingers bound a substantially circular opening.

Abstract: For use in geophones to support either the coil or the permanent magnet, a spring formed from a disc, said spring having an outer ring, an inner ring, and three legs connecting the outer and inner rings. The legs are equidistant from one another and substantially equal in length. The inner edge of each leg lies on an arc having a radius at least 1.25 times greater than the distance from the center of the spring to the inner edge of the leg at the point where the leg joins the inner ring. For each leg, the straight-line distance between the points where a leg joins the inner and outer rings is equal to or greater than the distance from the center of the spring to an outer edge of the outer ring.

Abstract: A sprinkler head includes a nozzle, a frame and a rigid mechanical fusible link assembly positioned between the frame and a closure plug or cap. An annular, normally concave spring is disposed between the cap and the nozzle. The spring creates a force which throws the link assembly clear of the head upon actuation.

Abstract: A friction clutch wherein the diaphragm spring is pivotably held between two seats one of which is provided at the inner side of the clutch cover and the other of which is secured to the cover by rivets or claws extending through slots between the radially inwardly extending prongs of the diaphragm spring. One side of the diaphragm spring has reinforcing ribs extending radially along the outer portions of the prongs, between the two seats and into the circumferentially complete outer marginal portion of the spring. That seat which is adjacent to the ribs has arcuate bridges which are slightly spaced apart from the ribs, and such seat is further formed with undulations which alternate with the bridges and define with the diaphragm spring shallow clearances to reduce the area of contact between the diaphragm spring and the respective seat. The bridges and the undulations reduce the danger of breakage of the diaphragm spring in the regions of enlarged outer end portions of the slots between the prongs.

Abstract: In a clutch release bearing an axially acting annular spring bears on a maneuvering member and on a radial rim on a drive member, so as to urge the latter towards a flange on the maneuvering member. The annular spring is adapted to turn inside out during assembly of the clutch release bearing and due only to the drive member acting on it, changing from a first configuration in which it is generally concave to a second configuration in which it is generally convex.

Abstract: A friction clutch whose diaphragm spring has equidistant prongs extending axially and radially from the energy-storing annular main section and being bolted directly to the flywheel on the crankshaft of an engine so that the spring normally biases a pressure plate against a clutch disc and the latter is thereby biased against the flywheel. The spring has alternating tongues and slots extending radially inwardly from the annular main section as well as an annulus of arcuate openings between the outermost portions of the slots and the prongs. The openings enhance the flexibility of the conical frustum which is constituted by the annular main section and the tongues with reference to the conical frustum including the prongs, and the openings thus prolong the useful life of the diaphragm spring.

Abstract: A vibration damping device for a thermostatic expansion valve comprises a spring member having a plurality of cantilevered fingers substantially parallel to the direction of travel of moving components but which are spring loaded to provide a force normal to that direction. The damping device is fixedly attached to one of the moving or stationary components and is arranged so that its fingers exert the normal force against the other of the moving or stationary components. Accordingly, a constant magnitude frictional force is produced over the range of movement, thus damping vibrations caused by pressure pulses from the compressor of the refrigeration system in which the thermostatic expansion valve is installed.

Abstract: A multiple-disc friction clutch wherein two axially movable pressure plates are disposed between two clutch plates and flank a diaphragm spring whose circumferentially complete outer marginal portion engages one of the pressure plates and which has a second portion located radially inwardly of the marginal portion and engaging the other pressure plate. The second portion of the diaphragm spring has a circumferentially complete tension spring which stores energy in addition to that stored in the outer marginal portion. The tension spring is located radially inwardly of the regions where the second portion engages the other pressure plate.

Abstract: A friction clutch wherein a diaphragm spring is installed between two ring-shaped seats intermediate an axially movable pressure plate and a cover and has a circumferentially complete outer marginal portion extending beyond the seats and engaging with projections of the pressure plate. The spring has a radially innermost portion formed by an annulus of prongs whose tips surround an opening and which alternate with radially outwardly extending open slots. Such open slots alternate and overlap in part with the inner portions of closed slots whose outer portions are holes forming an annulus inwardly of the outer marginal portion. The regions of overlap between the open and closed slots include bridges which together constitute an annular tension spring enabling the diaphragm spring to store energy in addition to that which is stored in the outer marginal portion. The diaphragm spring can be tilted between the seats by a release bearing which cooperates with the tips of the prongs.

Abstract: A diaphragm spring whose outer marginal portion is a circumferentially complete annulus and whose inner marginal portion surrounds a centrally located opening and is formed with a set of radially extending prongs directly surrounding the opening and separated from each other by relatively short radially extending inner slots. The inner marginal portion is further formed with relatively long radially extending outer slots each of which is spaced apart from and registers with one of the inner slots and has an enlarged outer end portion inwardly adjacent to the outer marginal portion. Still further, the inner marginal portion has radially extending elongated closed slots which alternate with pairs of aligned inner and outer slots and each of which partially overlaps the adjacent inner and outer slots.

Abstract: An assembly, such as a friction clutch, has a cup spring with a conicity which is variable when the assembly is in use. The cup spring has a ring-shaped base, tongues extending therefrom at an angle and separated from each other by slots which extend radially outwardly and terminate in hole-like cutouts, and hole-like enlargements disposed radially inwardly of the cutouts and having a width greater than the minimal slot width. Holding means extend axially through the cup spring and radially at least into the enlargements to fasten the cup spring in the assembly.

Abstract: Disclosed is a straightway valve comprising a housing made from interconnected stiff members, closing members made as toothed plates (10) pinched between the adjacent stiff members. Every toothed plate (10) is made as teeth (11 or 12) having their roots secured to a backing (20).

Abstract: A cooling fan assembly made of plastic material is composed of a plurality of fan blades and a boss and connected to a viscous fluid coupling device rotatably mounted through a bearing assembly on a driving shaft of an automotive vehicle. An axially resilient connecting member in the form of a plate spring is fixed to the boss of the fan assembly at one end thereof and to the coupling device at the other end thereof, whereby the inertia moment of the fan rotation causes the appropriate rotation of the fan assembly in spite of possible misalignment of the coupling device with respect to the driving shaft to thereby protect the bearing assembly from being damaged. Helical or waved springs may be interposed between the fan boss and the coupling device in place of the plate spring.

Abstract: A diaphragm spring for use in a motor vehicle clutch of a variable pitch drive pulley is disclosed. The diaphragm spring is of the type comprising a Belleville washer peripheral portion and a central portion divided into radial fingers separated by radial slots. Apertures alternate with the roots or radial outer ends of the radial fingers and open radially into the slots. These apertures consist of relatively larger area main apertures and relatively smaller area intermediate apertures. The radially outer edges of all the apertures lie along the same circumference of the diaphragm spring. The diaphragm spring is devoid of ribs. The diaphragm spring is rigidified along the circumference by the extra material formed around the smaller intermediate apertures, while maintaining a peripheral portion of constant radial extent throughout.

Abstract: A geophone spring is disclosed in which an inner ring member and an outer ring member are connected by a plurality of leg members. Each leg member includes a tapered segment that is wider at its middle than it is at either end. The tapered segment is connected to the inner ring by an inner segment, and to the outer ring by an outer segment. The inner and outer segments may also be tapered.

Abstract: A tip seal back-up member is disclosed for use in fluid apparatus of the scroll type, which member comprises a strip of material extending longitudinally in generally spiroidal configuration about a reference axis and having a preformed configuration such that its radially inner and outer edge portions are disposed axially with respect to each other. The strip of material comprises an elastic material such that as one of the edge portions is displaced axially toward the other, an opposing spring force is developed. In operation, the back-up member is disposed within a groove located in a tip surface of a wrap element in fluid apparatus of the scroll type, between a bottom wall of the groove and a tip seal. Preferably, the strip of material is generally flat between its radially inner and outer edge portions and is constructed from steel.

Abstract: A Belleville spring type of overspeed trip mechanism is made to rotate at the same speed as the shaft by preventing slippage between the spring and the other members of the trip mechanism. Slippage is prevented by forming grooves in the periphery of the interior portion of the spring and using pins which coact with the grooves to prevent rotation of the spring relative to the other members.

Abstract: In accordance with the method of this invention, at least one sheet containing the spider springs is positioned in a novel preform fixture having internal parts constructed to simultaneously permanently preform each spring after the fixture is heat treated. The novel fixture for carrying out the preforming process of the invention on an etched sheet comprises a base plate having a number of columns extending vertically upwardly from the flat surface. The number of columns is equal to the number of springs on the sheet, and their disposition on the base corresponds to the disposition of the inner rings on the sheet. The outside diameter of a column is substantially equal to the outside diameter of an inner ring. An intermediate plate is provided defining a number of transverse bores equal to the number of columns.

Abstract: A retaining ring (30) includes a cone-shaped, resilient rim (32) which defines a Belleville-type spring. A plurality of resilient teeth (36) extend radially inwardly or radially outwardly from one of the inner or outer edges of the rim, respectively. The retaining ring is receivable onto a shaft or into a housing bore where the resilient teeth (36) engage an annular groove (28) to retain the ring. The Belleville-type spring portion of the retaining ring provides a continuous axial force and allows for the resilient take-up of manufacturing tolerances in assemblies employing the retaining ring.

Abstract: The invention relates to an electromagnetically actuatable valve, which serves in particular to inject fuel into the suction tube of mixture-compressing internal combustion engines having externally supplied ignition. The valve includes a flat armature which is firmly connected with a movable valve element, embodied as a ball which cooperates with a fixed valve seat. The flat armature is provided on its side remote from the valve seat with recesses into which spring tongues formed from a remnant air disc protrude, resting under the influence of voltage on the flat armature and guiding it in parallel fashion.

Abstract: Electronic modules are protected from damage which might be caused by ambt vibrations and shock. Openings in the cabinet are sized to accommodate the electronic modules and snubbers are interposed between the modules and the walls of the cabinets to hold them securely in place. A pair of Belleville springs in each snubber force a projecting portion of a piston against the module or a flat strap that serves to distribute the snubbing force over a wider area on the module.

Abstract: The invention comprehends a unique spring used in a free-floating drag mechanism on a conventional spinning reel and a skirted style spinning reel. The spring comprises first a long leaf and then a short leaf spring which give linear responses for both portions. The spring is deeply mounted within the fishing reel and therefore is not subject to the corrosive atmosphere that standard drag mechanisms with standard springs are exposed to.

Abstract: Connection means for cooling fan assemblies are used to connect the fan assemblies to drive means such as viscous fluid couplings. The connection means includes a generally annular plate spring which has projections extending radially inward of an annular base and tongues projecting radially inwardly from the base. Each of the tongues is provided with a circumferential extension axially deformable and at the tip with an enlarged portion. The enlarged tip portions are secured to a casing of the drive means and the projections and the tongues are secured to a boss of the fan assembly with bolts. The arrangement that the projections, the tongues and the circumferential extensions are disposed inside of the base and the projections and the tongues are secured to the fan assembly serves to decrease vibration of the fan assembly and to increase the durability of the connection means.

Abstract: A new geophone spring is disclosed wherein the outer and inner rings of the spring are connected by leg members having a substantially straight segment which will pivot about an outer portion of the leg in a manner which will reduce the lateral bending forces acting upon the spring legs and increase the linearity of the spring.

Abstract: A diaphragm spring-type clutch assembly for an automotive vehicle or similar application wherein the diaphragm spring includes a plurality of outwardly extending integral cushion fingers on the periphery of the spring disc and arranged at such an angle as to engage the pressure plate of the clutch before the spring engages the fulcrum surface on the pressure plate as the clutch is engaged and thus cushion the engagement of the clutch.

Abstract: A geophone comprising an annular coil-mass and a permanent magnet assembly positioned inside the annular coil-mass with their longitudinal axes generally coinciding to place the coil-mass in the magnetic field of the permanent magnet assembly. Spring spiders support the coil-mass on the permanent magnet assembly for axial and rotational movement relative to the permanent magnet assembly along and around the longitudinal axis thereof. Contacts extend outside the housing of the geophone to connect the geophone into an electrical circuit. Two axially spaced, parallel, spring spiders or diaphragm springs electrically connect the outside contacts to the terminals of the coils of the coil-mass.

Abstract: A valve mechanism according to the present invention incorporates at least one movable valve seat that is received within a seat pocket of the valve body and establishes sealing engagement with a movable valve element. An annular universal seat spring formed of a material such as standard carbon steel is deformed from a generally flat configuration to a frusto-conical configuration during assembly of the valve and exerts a force urging the valve seat against the valve element. Depending upon the depth of the seat pocket, the length of the valve seat and the size or thickness of the valve element, the seat spring will be deformed within its elastic limits or beyond the elastic limits of the material thereof, whereupon it will take a permanent set. In either case, the seat spring compensates for tolerance variations and exerts a spring force within a preselected narrow force range to ensure effective sealing capability and low torque operation.

Abstract: A spring for a geophone has a plurality of spring arms connecting inner and outer concentric annular portions to resiliently resist relative movement of the annular portions along the concentric axis. Two support arms are connected to each spring arm. Each support arm has one end connected to one of the annular portions and the other end connected to the spring arm at a point spaced from the point of connection of the other spring arm to increase the natural frequency of the spring in a direction lateral to the concentric axis without changing appreciably the natural frequency of the spring along the concentric axis.

Abstract: A sheave for a speed variator comprising a fixed and a movable side mounted for rotation with a common shaft. A diaphragm spring urges the movably slide towards the fixed side to clamp a V-belt therebetween. The fixed side may be removed and turned around and then tightened with its own threaded fastener on the shaft to urge the movable side against the force of the diaphragm spring to a retracted position. A retaining member, e.g. a screwdriver, cooperates with the movable side to temporarily hold the same in its retracted position while the fixed side is removed again and turned around and secured by the threaded member in its normal position. The V-belt is then repositioned between the side and the retaining member released. Alternatively, the retaining member may be released automatically, e.g. centrifugally, when the variator is set into motion again.

Abstract: A retainer to hold a Belleville or diaphragm spring onto a rivet or similar securing member and provide a controlled spring pressure against an assembly retained by the securing member. The retainer includes a housing having a recess within which the diaphragm spring is received and a cap having a portion projecting into the recess to engage the spring and exert force thereon to reduce the height of the spring and control the spring pressure.

Abstract: A resilient structural member is hardened and tempered, and partially shot peened, forming a roughened surface. The surface is smoothened to an at least partial extent by grinding and polishing in a drum, or by an electrochemical process.

Abstract: The pressure plate actuation fingers of a friction clutch are provided with means for noise attenuation by the application of acoustical materials, alteration of the mass of vibrating parts, or surface treatment of slipping parts either individually or collectively to prevent the generation of objectionable noise due to resonance and sympathetic vibrations that are initiated by the stick-slip phenomenon as the non-rotating clutch release bearing contacts the relatively rotating actuation fingers.

Abstract: The present invention is generally related to a new construction for a resistor-type anode. Sacrificial anodes are used in a variety of applications to protect metallic structures from corrosion. In order to control the rate of consumption of the sacrificial anode, a resistor is placed in series between the anode and the tank (cathode). This invention relates to an improved resistor anode construction for use in a tank, for example a hot water tank. The anode includes a core wire with a spring welded to the exposed end. The spring is biased against a disc shaped resistor. The assembly is retained by a metal cap swaged over an insulating sleeve fitted on the end of the anode.