Abstract: An attachment device for a vehicle steering wheel to a steering shaft is provided, the steering wheel comprising a hub for connection to an end of the steering shaft, the hub and the steering shaft being connected with each other in a non-rotatable manner. The attachment device further comprises a bolt or a threaded nut accomodated rotatably at the hub but being held in an axial direction. The bolt and the nut, respectively, engage the end of the steering shaft in order to interlock the hub and the steering shaft. The attachment device furthermore comprises an engaging element cooperating with the bolt and the nut, respectively, and being provided with an engaging configuration for a clamping tool, the engaging configuration being accessible from outside of the hub.

Abstract: A device for attaching a steering wheel on a steering shaft by a connecting sleeve, which is attached to the hub of the steering wheel. At its end, the steering shaft has a section with exterior splines, which are complementary to interior splines in the connecting sleeve. The connecting sleeve has an axial slot and is clamped by a clamping screw against the section of the steering shaft which has the splines. The steering wheel constitutes a sub-assembly with an integrated air bag module and may be supplied for the final assembly of the vehicle.

Abstract: An end of a composite cylinder is formed about an end connection assembly having two longitudinally arranged pieces having a contour which prevents the withdrawal of the end connection assembly from the cylinder. The two pieces of the end connection assembly are relatively forced apart and a snap ring having a certain rest diameter is reduced in diameter and inserted into the end connection assembly to a position between the pieces. The snap ring then assumes its rest diameter positioned between the pieces, forcing them to maintain intimate contact with the inner surface of the cylinder, thus removing any residual gap from the assembly process and/or preloading the interface between the end of the composite cylinder and the end assembly prior to application of an axial load.

Abstract: An end of a composite cylinder is formed about a multipiece end assembly having a contour which prevents the withdrawal of the end assembly from the cylinder. The pieces of the end assembly are relatively forced apart and a spacer is positioned between the parts to maintain the pieces in intimate contact with the inner surface of the cylinder thus preloading the end prior to application of an axial load or removing any residual gap from the manufacturing process. The cylinder may have end assemblies at both ends and to which may be coupled external connectors such as flange members, for construction of a marine riser.

Abstract: A steering wheel is assembled with an inflatable vehicle occupant restraint before the steering wheel is mounted on a steering shaft. The steering wheel is assembled with a steering shaft by sliding the steering shaft into a bore in the hub of the steering wheel. The steering wheel is secured to the steering shaft by a retaining nut disposed on the side of the hub of the steering wheel which is distal from the rim of the steering wheel.

Abstract: A bearing assembly for a wheel hub/constant velocity universal joint unit which includes a double-row bearing which has a one-piece outer bearing ring to be connected to a wheel carrier. The bearing inner bearing rings are directly formed by the wheel hub, on the one hand, and by the outer part of the constant velocity universal joint, on the other hand. The parts non-rotatingly engage one another in a form-fitting way and are axially tensioned relative to one another, with the wheel hub, on the one hand, and the outer part of the constant velocity universal joint, on the other hand, including form-fitting engaging mechanism, which are adapted to one another and which enable the two parts to be connected in only one single angular position relative to one another.

Abstract: A retainer clip includes a retainer portion having an axially extending tubular wall which is radially expandable for snap-fitted radial engagement with a reduced diameter portion of a rod such that the retainer clip is radially and axially trapped on the reduced diameter portion of the rod and can only be removed by simultaneous application of dual directional forces. The retainer clip includes the retainer portion, a washer portion, and a hinge portion integrally connecting the retainer portion and the washer portion so that the retainer clip is handled as a single part during assembly onto the rod.

Abstract: A generally cylindrical hub spacer having inwardly and outwardly extending protrusions is used to rotationally interconnect a deck pulley to a spindle assembly in a lawn mower.

Abstract: A fastener (50) is disclosed suitable for securing a grinding wheel (92) to the spindle of an angle grinder, the fastener (50) being capable of tightening and loosening by hand. The fastener (50) comprises a first disc-shaped component (52) having a first pressure transmitting surface (53) adapted to bear against the grinding wheel (92), and a second disc-shaped component (54) having a threaded hub (56) non-rotatably fixed thereto. The first and second components (52, 54) are assembled on the hub (56) so as to be rotatable with respect to each other, and the second component (54) is adapted to apply an axially directed compressive force to press the first component (52) against the grinding wheel when a torque is applied to the second component (54).

Abstract: The innovation pertains to a device for fastening the housing of a data sensing element which encloses electronic circuits and connecting elements. Data sensing elements of this type are fastened in the wall which encloses the medium to be measured by means of a screw insert. Depending on their function, these data sensing elements may assume a position in which the connection of the connecting lines leading to a control room which is situated at a distance from the measuring point is only possible with great difficulties. This is the reason why the housing should be adjustable axially symmetrically relative to the screw insert. According to the solution suggested, the separable connection between the housing and the screw insert is formed by only one easily accessible screw which penetrates through a clamping disk and by projections which penetrate into a groove of the screw insert.

Abstract: A self-aligning adapter used for attaching a booster to a missile includes a hollow tapered receptacle positioned on the missile. A tapered member sized and shaped to fit into and mate with the receptacle is positioned on the booster. The tapered member fits into the tapered receptacle to align and attach the booster to the missile. A linear explosive charge is positioned on the booster around where the tapered member is joined to the booster. Explosion of the charge severs the tapered member from the booster releasing the booster from the missile.

Abstract: A centrifuge rotor lid assembly which includes a handle which allows convenient handling of a centrifuge rotor and facilitates releasing the lid from the rotor after centrifugation. In one embodiment, the lid is provided with a lid knob and a spindle knob in a coaxial sliding arrangement. The lid knob is used to tighten the lid on the rotor body and the spindle knob is used to tighten the rotor to the centrifuge drive spindle. The upper end of the inner knob is provided with a handle which extends perpendicular to the axis of the knob. This handle is used for lifting the rotor after the spindle knob has been unscrewed from the spindle and for unscrewing the lid knob. The lower end of the spindle knob has a pin which cooperatively engages the lower end of the lid knob when the spindle knob is lifted from the rotor and is turned in a direction to unscrew the lid knob.

Abstract: An anti-twist strain relief bushing for use with an exteriorly threaded tubular pipe for nondestructively restraining an electrical cord against axial or torsional displacements. The bushing comprises an interiorly threaded gland nut to be screwed onto the tubular pipe and an insert to be wedged into the pipe by the nut. The gland nut comprises a circular top defining a circular beveled opening, an integral flange spaced apart from the top parallel and concentric with the top, and an internally threaded, tubular body extending from the top to the flange defining a passageway concentric with the beveled opening and the flange. The body has a plurality of radially spaced apart raised ribs longitudinally disposed on its exterior. The underside of the top and the body define an integral, beveled shoulder disposed interiorly within the passageway. The insert comprises two separate, mirror image halves adapted to be folded together when the insert is forced into the pipe.

Abstract: A timing sprocket is secured to a camshaft by a locking coupling so that before the coupling is tightened the sprocket will free wheel on the shaft for adjustment purposes and yet be firmly supported against tipping under load, and when tightened the sprocket is locked to the camshaft. The sprocket has a bore fitting on the shaft and a counterbore accommodating a longitudinally split locking ring. A taper between the bore and the counterbore matches a taper on the end of the locking ring. A bolt axially threaded into the camshaft end moves the locking ring from the loose condition where the sprocket can rotate on the shaft to a tight condition where the tapers compress the ring against the shaft and clamp the sprocket for rotation with the camshaft.

Abstract: A coupling receives a steeply tapered end of a propellor shaft and is secured thereto with a lock nut held in place with a set screw. A housing taper is steeper than known locking tapers to facilitate housing removal. The housing is internally threaded to receive an extractor element which, after lock nut removal, is screwed into the housing for abutment with the end of the propellor shaft with continued advancement of the extractor element resulting in housing separation from the shaft.

Abstract: A secondary securing member is provided (19,28,29,30) for securing a first component (11) to a second component (13) when primary securing member (17) is inadvertently removed. The first component (11) includes an outwardly extending spigot (12) slidably engaging the secondary securing member (19, 28,29,30). The second component (13) is assembled and secured by a primary securing member means (17). Thus if in use, the primary securing member (17) is inadvertently removed, the secondary securing member (19, 28, 29, 30) insures limited axial displacement but no separation of the second component (13) from the first component (11).

Abstract: A screen tie-down for a vibratory separator has a pedestal with a base plate and a post. The post has internal right hand threads for engaging the screen center support stud, and external left hand threads. A jam nut is threaded onto the support stud against the top end of the post. A cap having internal threads is turned onto the external threads of the post. All adjustments to the pedestal height can be made from above the screen and the tie-down cannot be overtightened.

Abstract: Apparatus for mounting an optical disc whereby the yield strength of the disk is maintained. An upper section includes an end cap having a central bore, a deformable annular finger section, and a compression face for receiving a deformable O-ring. A lower section includes an insert having a cylindrical axial projection about which a deformable washer may be fitted. As the upper and lower sections are secured in the central aperture of the optical disk, the disk is captured between the finger section, O-ring, and washer.

Abstract: A composite-to-metal joint is described which includes an axial metal rod that is embedded in a composite material component to facilitate the application of an axial preload to the joint and apply a compressive force to the composite material. A conical cavity is provided in the metal component of the joint and the composite material component has a surface designed to mate with the same when the two parts are assembled together. The metal rod is embedded in the composite material and extends through an axial aperture in the metal component. A nut threadably engages the rod to draw the two disparate material parts of the joint together, apply a preloading thereto, and apply the compressive force mentioned above to the composite material.

Abstract: The invention concerns expandable fastenings of the kind that includes a conical shaft part (2) and a conical expandable sleeve (4) that is pressed up on the conical part (2) of the shaft (1) in order to fill out and fasten the shaft in a mounting hole. The expandable sleeve (4) is pressed against the cone by a washer (5) and by a nut (11) screwed onto a threaded end portion of the shaft. The washer (5) is on its outside provided with a thread for the threading thereon of a nut part or sealing ring (6). The expandable sleeve (4) and the threaded washer (5) are connected by hooklike flanges so that the sealing ring (6) can also be used to pull out the sleeve from the conical axle part.

Abstract: An adjustable, resettable fixed mount for a hologon laser scanner disc or spinner provides perpendicular angular orientation of the hologon disc relative to the motor rotation axis within about 5 to 10 arc seconds and corresponding wobble angles as compared to 20 to 40 arc seconds for hologon discs mounts in dynamic mounts or rigidly with fixed, hard mounts which have heretofore been proposed and used. The improved mount is a fixed hard mount which is nevertheless adjustable. It may be implemented by a connecting assembly having a hub with a spherical bearing which allows perpendicular angular orientation of the hologon about a plane perpendicular to the motor drive shaft on which the spherical bearing is mounted. A retainer cap has a plurality of angularly spaced adjusting screw members which change the perpendicular angular orientation of the disc relative to the motor rotation axis. Alignment is performed while the hologon is not rotating.

Abstract: A turbocharger impeller has a lock ring that is flexed in assembly to clampingly center and lock an impeller wheel on its drive shaft. The lock ring is also applicable to other driving or driven shaft and wheel combinations. The lock ring is made part of a two-piece spacer for the illustrated rotor applications but is not limited to that arrangement. Alternative impeller wheel structures including drive means and locking nose cone features are included.

Abstract: A hollow shaft in which an externally threaded portion is forced on an outer periphery of an opening portion at one end of a main body and an engageable groove engageable with a tongue piece of a washer for a bearing is recessedly provided in the axial direction in the externally threaded portion. The engageable groove is recessedly provided to define a remaining wall portion at an outer end of the hollow shaft in the axial direction, whereby a reinforcing ring portion is integrally formed at an outer end portion of the externally threaded portion in the axial direction, the width of the remaining wall portion being set at such a dimension that the washer for the bearing can be coupled into the externally threaded portion.

Abstract: In order to permit a steering wheel to be simply connected to a steering shaft having a frusto conical tapered portion, a serrated or splined portion and a threaded portion, in a manner which permits ready adjustment of the wheels' position which respect to the shaft, the central boss of the steering wheel is divided into separate upper and lower boss members. The lower boss member seats on the tapered portion and is rigidly connected with the steering wheel. The upper boss member fits on the serrated portion so that relative rotation is prevented. By tightening a nut on the threaded portion of the steering shaft, force can be applied through the upper boss member to the lower one in a manner which produces a frictional engagement between the lower boss member and the tapered portion which prevents relative rotation.

Abstract: A small gas turbine engine including a power turbine shaft and a gearbox input shaft co-axially aligned one with the other and mounted in three bearings. The power turbine shaft is provided with a male conical surface while the gearbox input shaft is hollow and includes a female conical surface adapted to mate with the male conical surface of the power turbine shaft. The power turbine shaft also includes an axial projection being threaded and inserted within the hollow portion of the gearbox input shaft. A nut having a shoulder is threaded onto the threaded projection of the power turbine shaft and engages a shoulder provided within the hollow gearbox input shaft such that torsion applied to the nut will force axial engagement of the conical surfaces. A complementary spline section may be provided, on the one hand, between the nut engaging shoulder and the female conical section on the gearbox input shaft. The complete coupling is within the diameter of the two co-axial shafts.

Abstract: A mounting device can mount a machine element having a bore coaxially on a shaft. The mounting device has a first member having internal threads. Also, included is a split sleeve having external threads adapted to be mounted around the shaft and inside the bore. The threads of the split sleeve have apexes at a uniform diameter when unstressed. The first member is threaded on the external threads of the split sleeve. The mounting device also has a second member spaced from the first member by an amount sufficient to allow the first and second members to embrance the machine element. The threads of the first member and split sleeve are shaped to cause compression of the sleeve as the first and second members embrace the machine element.

Abstract: A solid, dual arbor spindle including a central cylindrical section creating a central pulley surface, a large arbor longitudinally extending from the central section in a first direction, and a small arbor longitudinally extending from the central section in a second direction diametrically opposed to the first arbor. The central section of the spindle is rotatably retained between a pair of bearings which are confined in position between a pair of interconnected retaining rings.

Abstract: Handrail drive wheels on escalators and moving walkways are subjected to high stresses due to the pressures which are generated by the drive wheels in order to move the handrails. The operational stresses on the drive wheels require that they be securely mounted on their drive shafts. This mount assembly provides secure wheel-shaft coupling, while enabling the drive wheel to be easily removed from the drive shaft for servicing without the need to use any specialized tools. The wheels are provided with internal jack screws that can be manipulated with an Allen wrench to dislodge the wheel from the drive shaft.

Abstract: A rotor attachment assembly for securing a rotor, such as a compressor impeller, to a rotor shaft. The assembly comprises a locking nut, a rotor having a flush mounting surface for the flush mounting of the locking nut, and a nut-receiving rotor shaft. The shaft comprises a smooth body and a threaded end which is of less diameter than the shaft body. The nut includes an unthreaded bore portion and a threaded portion. When the rotor is in place on the shaft, part of the smooth body extends beyond the nut flush mounting surface of the rotor. The bore portion of the nut is deeper than the length of the part of the smooth body extending beyond the rotor. Accordingly, when the nut is tightened onto the shaft to press against the rotor, a gap is left between the body of the shaft and the threaded portion of the nut. Coaxiality of the shaft and the rotor is assured by this construction which provides against bending of the shaft.

Abstract: For an assembly comprising a shaft (106) and an article (104) mounted on the shaft, a device (116) mounted on the shaft prevents movement of the article (104) along the shaft towards the device. The device preferably comprises a ring (116).To protect the ring from accidential blows which may dislodge it, the assembly includes a cap (120).To simplify manufacture of the ring, the projections of "noses" (118) are provided separately, preferably as part of the cap.

Abstract: The impeller of a fluid pump contained within an impeller housing is axially located on the drive shaft of a motor by securing the impeller to a sleeve that is slidably keyed onto the end of a motor shaft with a seal spring disposed between the sleeve and impeller housing urging the sleeve and impeller against the drive shaft so that the end thrust force is provided by the motor shaft bearings.

Abstract: A device for adjusting the angular position of rotation of a steering wheel hub of a motor vehicle relative of a steering shaft utilizing a bushing which is located between these parts and connected to each of these by sets of teeth distributed uniformly over the inner and outer periphery of the bushing and wherein these teeth offer a large number of possibilities of angular adjustment as a result of the engagement of one set of teeth with the steering wheel hub for a coarse adjustment and as a result of the engagement of the other set of teeth with the steering shaft for an even larger possibility of minor angular adjustment.

Abstract: Disclosed is a flywheel mounting device for an internal combustion engine in which a keyway extends along the tapered surface of a flywheel in the axial direction from the small diameter end portion thereof and terminates at an intermediate portion thereof, so that the tapered surfaces of the crank shaft and the flywheel are closely fitted together over the entire periphery thereof at the large diameter end portions thereof.

Abstract: A pump impeller manufactured by press forming of steel plate and comprising a boss formed with a central bore for connecting the boss to a main shaft of the pump through key and key way engagement, and a main shroud fixed to the boss is disclosed. The impeller is characterized in that the boss is formed with a polygonal portion on the periphery of the boss and the main shroud is formed at central portion thereof with a polygonal recess fitting to the polygonal portion of the boss. A retainer plate is mounted on the boss at an end portion thereof opposite to an end portion from which the main shroud is fitted to the boss and is connected by welding to the main shroud. Thereby, since the power is transmitted from the boss to the main shroud through polygonal surfaces, no substantial stress concentration occurs at the power transmitting area.

Abstract: To prevent relative turning between elements which are to be in threaded engagement with one another, one of the elements is provided with a recess and the other element with a non-circular through hole. When the two elements have been joined and brought into their intended relative positions, a locking element, having a cross-section conforming to the through hole, is inserted through the through hole and forced into the recess, deforming the material surrounding the recess, thereby locking the two elements against relative turning. The locking element can be a part of a tool used to rotate the element having the through hole when the elements are joined together. After the locking element is forced into the recess, the excess portion of the tool, extending beyond the element having the through hole, can be cut off or otherwise removed.

Abstract: A clamping fixture for axially clamping a tool, on a flange of a driven spindle and comprising a clamping nut having an internal thread to be screwed on an end portion with an outer thread of the driven spindle, a clamping member arranged between the tool and the clamping nut for transmitting an axial clamping force to the tool upon tightening of the clamping nut, a manually operable adjustable member freely rotatable relative to the end portion of the driven spindle, and a gearing for gear-coupling the adjusting member to the clamping nut and gear-coupling the clamping nut to the clamping member.

Abstract: Externally threaded opposite end portions of the bar of a barbell are insertable into the central apertures of cylindrical weights. Locking sleeves having manually retractable inward-projecting locking pins are fittable on the externally threaded bar end portions. With a locking pin in its projected position, the locking sleeve can be rotated like a conventional nut so as to advance toward or away from the weights. With the locking pin held in a retracted position, the locking sleeve can slide longitudinally in either direction along the threaded bar end portion without rotating.

Abstract: The locking arrangement for the axle fixing of machine parts on shafts and axles as a pair of sleeves which can be telescopically threaded into each other. In addition, the internal clamping sleeve is threaded into an abutment with a stop ring provided in a groove of the shaft or axle. The locking arrangement avoids the need for threads on the shaft and leads to the simplified manufacturer of the shaft.

Abstract: The present invention relates to a mounting structure for securely and accurately positioning an object on a rotatable shaft. In the preferred embodiment, the mounting structure is utilized to position a rotary bell on a rotatable shaft of a rotary atomizer coater. More specifically, the mounting structure includes a rotatable shaft member having an axis and adapted to be connected to a rotating drive mechanism. The shaft member is provided with a first tapered mounting position. An object is adapted to be securely mounted on the shaft member for rotation therewith, and is provided with an internal bore having a second tapered mounting portion engageable with the first tapered mounting portion. The first and second tapered mounting portions cooperate to accurately align the object with respect to the shaft member.

Abstract: A clamp device for clamping a disc tool to a driven spindle and comprising a clamp nut, a clamp disc, and an arrangement for connecting the clamp disc to the clamp nut and which arrangement includes a ring having an inner track in which a plurality of rolling members are displaceable and are spring biased against respective stops projecting from at least one of the clamp nut and the clamp disc, and which is rotatable against a spring force to release the clamp disc from the clamp nut.

Abstract: A device for effecting fine adjustment of the orientation of a steering wheel on a shaft (10), which are joined together by a fastener (30), has a sleeve (40) interposed between the end (11) of the shaft (10) and the hub (20) of the steering wheel. The sleeve and the shaft define between them an annular chamber (42) in which is housed a friction member (50) opposing their spontaneous relative rotation. The fine adjustment, limited to a value of about 9.degree., is made with the aid of an arrangement including a control mechanism, amplitude limiters, and stops. These stops ensure continuity of transmission of the torque exerted on the steering wheel to the shaft in the event of slackening of the fastener or failure of the amplitude limiters.

Abstract: In a marine drive having a tapered propeller shaft section (14) and a tapered propeller hub (20, 60) matching and fitting therearound in flush contact, a relief inner diameter section (28, 66) is provided in the hub, spaced from the propeller shaft, to prevent flush contact and facilitate removal of the propeller hub from the propeller shaft. In a further embodiment, a thrust collar (50) with a substantially steeper tapered section (56) further facilitates removal.

Abstract: A disengagable coupling comprising a first part (1) affording a bore (3) and a second part (2) comprising a sleeve (5) and a drive flange (6). The sleeve (5) fits in the bore (3) and contains an insert (8) with collars (9,10) between which is defined a chamber (4) for the reception of oil under pressure to expand the sleeve into frictional engagement with the wall of the bore (3) for torque transmission. There may be a pressure release valve response to relative movement between the first and second coupling parts to release the coupling in case of overload.

Abstract: Improved methods and apparatus are provided for structurally interconnecting an instrument manifold with a differential pressure assembly having a pair of tapered NPT threaded outlet ports each adjoining an exterior body surface. First and second connector flanges are provided each having a through passageway for transmitting a pressure signal from the corresponding NPT outlet port in the differential pressure assembly to an inlet port in an instrument manifold. Each connector flange includes a tapered threaded end, a flange end, and a threaded portion fixed between the threaded end and the flange end. The apparatus also includes first and second stabilizer members, and first and second tensioning nuts for exerting a compressive force on the stabilizer members such that the stabilizer members will transmit substantially all radially-directed forces to the differential pressure assembly.

Abstract: An arrangement for coupling a rotary member such as a pulley of V-belt or flat belt to a rotary shaft. A boss is mounted on the rotary shaft so that the rotary shaft will have its one end protruding from the boss. The protruding end is passed through a center hole in the rotary member. A nut is tightened on the end of the rotary shaft protruding from the center hole to tighten the rotary member and the boss and thus couple them together. A plurality of projections are formed on one of the rotary member and the boss and a plurality of cutouts or holes are provided in the other. The projections are inserted in the cutouts or holes to couple the rotary member and the boss together.

Abstract: This rotary die cylinder assembly (10) includes a cylinder (12) having end bearers (14) attached thereto. The cylinder includes intermediate body (16) and opposed end shafts (20). The body 16 is adapted to carry tool members (18) and the end shafts are externally threaded to receive the bearers, the bearers including an internally threaded bore (34). The cylinder body includes opposed annular end faces (30) adapted to receive associated bearer inner faces (32) in torqued metal-to-metal relation. An opening (42) is drilled between the faces (32, 33) of each of the bearers and extends into the the cylinder to receive a pin (44) to secure the bearers to the cylinder. Each opening extends into the cylinder body sufficiently so that the associated pins can be driven completely into the cylinder body end and out of engagement with the bearers. When this is done removal of the bearers and replacement thereof with new bearers, which can be pinned to the cylinders at a different location, is easily accomplished.

Abstract: An assembly for attaching a brake cam shaft to a slack adjuster includes a cam shaft with cam elements at one end thereof and an attachment portion at its other end. The shaft has a spline adjacent the attachment portion. A securing member is locatable about the shaft or a shoulder on the shaft, the securing member or shoulder limiting the extent to which the splined end of the shaft may project into or through the splined aperture of the slack adjuster. A fastener is secured to the attachment portion such that when the shaft is securfed to the slack adjuster, the shaft is held fast relative thereto with the slack adjuster located between the shoulder or the securing member and the fastener.

Abstract: An exercise machine weight guide including an uppermost plate with a centrally disposed mounting hole. The mounting hole is designed to accommodate a threaded plug and a securing plug. A weight post with one threaded end and a number of apertures disposed along its length is inserted through the opening of the uppermost plate. The threaded plug has internal threads for securing over the threaded end of the weight post. The securing plug is positioned over the threaded plug and engages, of a corresponding set of threads, with the threads located within the mounting hole. A number of weights are disposed below the uppermost plate. The lower surface of each weight has a groove which allows a connector pin to pass under the weight and through an aperture of the weight post. The threaded plug is rotated to tighten the assembly to form a single mass of weight and securing plug is rotated to tighten against the threaded plug locking the threaded plug in place. To change the weight, the procedure is reversed.

Abstract: An adaptor for converting a chain saw into a circular saw by means of a collar secured to both the clutch housing and the hub of the existing chain saw, the collar being held by a washer and a nut from the chain saw, said collar being cylindrical with a concentric opening through it, the concentric opening having a smaller diameter for a minor portion of the length of the collar and a larger diameter for a major portion of the length of the collar, the portion of the opening with a larger diameter being threaded and portion of the opening having a smaller diameter being ribbed, the adaptor further including a shaft extension plug threaded into the threaded opening of the collar, the shaft extension plug having a face plate and a concentric threaded shaft which extends concentrically from the face plate, for mounting a circular saw blade with a nut being threaded on the concentric shaft to hold the circular saw blade.

Abstract: A retaining washer (100) prevents the rotation of a D-shaped shaft (106) which is mounted in a round hole (105a) of a housing (105). The retaining washer includes a substantially flat washer (101) having a hole (101a). A tapered tab (102) includes a wide end (102a) and a narrow end (102b). The tab is attached to the flat washer at the wide end such that the tab is substantially perpendicular to the flat washer. A gusset (103) is attached between the tab and the flat washer. The gusset includes a lower edge (103a) which is positioned at an obtuse angle (104) relative to the flat washer. The gusset indents into the housing (105b) and the tab is forced against the flat portion (106b) of the D-shaped shaft. The upper left and right edges of the tab cut into the wall of the housing hole (105c and 105d).