Abstract: A unique coupling apparatus of the present invention comprises a substantially hollow cylinder functioning as a coupling member (106) preferably having gaps (126, 141) extending in the axial direction from the ends, leaving attachment members in the center. One end of the cylinder contains an undercut feature in the shape of an annular ring or flange (128) on the interior surface of the cylinder. The opposite end of the cylinder contains an undercut feature in the shape of an annular ring or flange (142) on the exterior surface of the cylinder. The gaps in the center of the cylinder allow the half portions of the cylinder to flex about the attachment members toward or away from one another at each end respectively. The novel coupling apparatus finds particular application in retaining a pivoting wall mount/desk mount conversion bracket (100) in either of two positions of a base (200) such as a cordless telephone base station.

Abstract: The present invention provides a rack mount mechanism that includes first and second recessed slides fixed in a stationary position and first and second mounting brackets slideably mounted on the first and second recessed slides, respectively. The first and second mounting brackets each have front and back ends extending, for example, perpendicularly inward from the base of the mounting brackets. A frame is included which is attachable to the computer enclosure and has front and back rails. Each rail has an edge extending, for example, perpendicularly outward from the base of the rail and each edge has a plurality of apertures. An angled bar-nut is coupled to each of the rails by threading the angled portion of each angled bar-nut through an aperture in the edge of the rail and including a screw and a cage nut to secure the angled portion of each angled bar-nut to the edge of each rail.

Abstract: A quick connecting bayonet style linkage has a hollow tube member with a transversely disposed pin near an engaging end; a shaft member sized to have a sliding fit in the engaging end of the hollow tube member and having a transversely disposed slot sized top slide over the transversely disposed pin; and provision for capturing the shaft member within the engaging end of the hollow tube member when the transversely disposed pin is engaged with the transversely disposed slot.

Abstract: A method for obtaining a tight, secure connection between two relatively non-deformable members and the connection resulting therefrom. The method includes the steps of forming a recess in a first of said members, forming a second member with a portion that seats in the recess of the first member, molding a liner of thermoplastic to one of the members, which thermoplastic is deformable but not more than slightly compressible, and seating the portion of the second member in the recess of the first member with one of the members engaging the liner to displace a portion of the liner into a void space in one of the members to thus form a tightly gripping connection between the members. A composite knob and its connection to shaft made in accordance with this method are also disclosed.

Abstract: A shaft coupling including a socket in an end of a first shaft element and a plunger on an end of a second shaft element. The plunger is divided by a longitudinal slot in the second shaft element into a pair of laterally flexible cantilever springs each having a pair of converging planar sides. Each of the converging planar sides of the cantilever springs has a transverse convex lobe at a distal end thereof and a concave recess inboard of the transverse convex lobe. The socket has a plurality of planar sides which define wedge-shaped corners facing the cantilever springs when the plunger is in the socket. The cantilever springs bias the transverse convex lobes thereon toward the wedge-shaped corners of the socket to rotatably couple the first and second shaft elements with zero dimensional tolerance therebetween. A flat shim in the longitudinal slot in the second shaft element limits additional flexure of the cantilever springs during torque transfer.

Abstract: The invention pertains to an oil-sealed vacuum pump (1) with a pump chamber (8, 9), with a rotor 3 rotatively mounted therein, with a bearing piece (13) delimiting the pump chamber on the drive side and with a passage (35) in the bearing piece (13) which contains a coupling piece (37) used to interlock the rotor (3) with the shaft (36) of the drive motor (4) and a sealing ring (55) to seal off the coupling piece from the passage (35) in the bearing piece (13). To simplify manufacture of the pump, the invention proposes that the interlocking connections between rotor (3) and coupling piece (37) as well as coupling piece (37) and shaft (36) are effected from the faces, and that the coupling piece (37) is a support for a rotor (46) for an oil pump (45, 46), the pump chamber (45) of which is formed in the end plate (13).

Abstract: A construction element, preferably a constructional toy, including a tubular body portion and, formed integrally with each of the opposite ends thereof, a pair of gripping jaws, each pair constituting a coupling portion. The constituent jaws of each pair are oppositely disposed with respect to a longitudinal axis of the body portion and are separated by oppositely disposed peripheral coupling device. The tubular body portion is formed with longitudinally directed, angularly spaced-apart, first coupling device. Each pair of the gripping jaws of the construction element can embrace a body portion of a second construction element, with the jaws not extending beyond a median plane of the body portion of the second construction element, and with inner surfaces of the pair of jaws conforming to the outer surface of said body portion.

Abstract: A joint, particularly for use with banister assemblies, comprises a ball (14) fixed into position within a socket (13). The balls (14) formed at either end of a plurality of balusters (12), and sockets (13), formed in a base rail (10) and hand rail (11) are preformed at a work shop or factory and subsequently used for construction of a banister assembly. During the construction of such an assembly, the base rail (10) is fixed into position and the hand rail (11) placed in parallel, vertically spaced-apart relation to it, supported loosely by newel posts at either end. Next, balusters (12) are inserted between the base rail (10) and hand rail (11) by inserting a bottom ball of each baluster (12) into the base rail sockets (13) and adjusting the hand rail (11) to enable insertion of the upper balls into the hand rail sockets (13). Once all balusters are in position, the hand rail (11) can be firmly fixed into place.

Abstract: The fastening of two parts (1 and 3) to one another, e.g. of a tool or workpiece, on a holder provides that the two parts (1 and 3) to be fastened together have adjoining fitting areas (4 and 5) when in use and are braced against one another by fastening means, e.g. a single fixing screw (2), extending diagonally or at right angles to the contact plane of these fitting areas (4 and 5). In this case, in addition to the fitting areas (4 and 5) fixing the reciprocal axial position in Z direction, fitting projections (9) are provided on the one part and fitting recesses (10) on the other part which prevent the parts (1 and 3) connected and braced with one another from shifting diagonally to the fastening means within the contact plane of fitting areas (4 and 5) and which center the two parts (1 and 3) diagonally to this contact plane in X and Y direction so as to fit accurately.

Abstract: A device for fastening a wooden handle and a blade of a gardening tool comprises a connection member engageable with the wooden handle and the blade. The connection member is composed of two inner frame pieces, four outer frame pieces, and a connection space formed by two inner frame pieces for receiving therein a connection end of the blade. The wooden handle is provided at one end thereof with a connection slot dimensioned to receive therein two inner frame pieces of the connection member. The connection member is engaged with the wooden handle and the blade of the gardening tool such that two inner frame pieces are lodged in the connection slot, and that four outer frame pieces embrace securely the walls of the connection slot, and further that the connection end of the blade is held securely in the connection space formed by two inner frame pieces of the connection member.

Abstract: Disclosed is an adjustable length rotary drive coupling comprising a first rotary shaft provided with at least one tooth and a second rotary shaft provided with a plurality of abutment surfaces spaced apart along the length thereof associated with each the tooth. One of the rotary shafts is a drive shaft, with the other shaft being a driven shaft. Each tooth is selectively engageable with any of its associated abutment surfaces, to enable the length of the rotary drive coupling to be adjusted.

Abstract: There is provided a coupling joint for coupling a shaft (23) to a rotary axis (25a) of a rotary angle sensor (25) mounted on a valve body. The coupling joint includes an engagement recess portion (40) formed on the shaft, a coupling member (41) engageable with the engagement recess portion, and a projection (42) formed on the rotary shaft for engagement with an angular hole (45) of the coupling member. Also, the coupling member is constructed by a pair of first opposing sides (43) and a pair of second, wave-form or zig-zag opposing sides (44) forming a configuration having an angular opening. The pair of first sides are formed to fit into the engagement recess portion of the shaft. The projection fits between the pair of second sides.

Abstract: A ratchet link having a cylindrically-shaped tongue at one end, and an offset C-shaped socket at the other end defined by a pair of opposing, spaced-apart, resilient arcuate prongs which extend outward from the device away from the tongue end. Spaced-apart teeth are provided along the inside surface of the socket and along the outside surface of the tongue. When the tongue of one link is placed into the socket of another link, the teeth intermesh wherein the teeth in the tongue fit into the interdental notches between the teeth in the socket, and the teeth in the socket fit into the interdental notches between the teeth in the tongue. The tongue and socket pivot in discrete positions, while lateral movement is prevented by the engagement of a ring on the tongue that mates with a slot on the socket.

Abstract: A device for coupling two shafts rotatable about a common axis comprises teeth at the end of one shaft and notches at the end of the other shaft. The teeth and the notches have conjugate profiles and inclined sides so that the teeth engage in the notches. An axial retention sleeve surrounds the ends of the two shafts and has bearing end faces substantially perpendicular to the common axis. A compression spring bears on one of the bearing end faces of the sleeve coupled axially to one of the two shafts and presses the ends of the two shafts against the other bearing end face of the sleeve.

Abstract: A ratchet link having a cylindrically-shaped tongue at one end and a C-shaped socket at the other end for use in an articulating coupling system. The socket is defined by a pair of opposing, spaced-apart, resilient arcuate prongs which extend outward from the device away from the tongue end. The inside radius of the socket is substantially the same as the outside radius of the tongue, so that the tongue can be inserted into the socket of another link. The socket includes a narrow centrally positioned slot along its circumference, and the tongue includes a narrow centrally positioned ring extending outward along its circumference which is received by the slot when the tongue is inserted into the socket. A plurality of spaced apart teeth are provided along the inside surface of the socket and extend between the faces of the device in a substantially perpendicular orientation to the plane of the faces. Similar teeth are located along the outside surface of the tongue.

Abstract: An automatic transmission operating device for changing an operating range of an automatic transmission mounted on an automotive vehicle. The automatic transmission operating device comprises a pair of bearing sections which are located separate from each other and fixedly connected to a base fixed to a vehicle floor. Each bearing section includes a generally cylindrical portion having a generally C-shaped cross-section so as to define a cutout groove. A base member for a shift lever is provided including a shaft section which is formed at its opposite ends with a pair of end projections. The end projections are rotatably disposed respectively inside the cylindrical portions of the bearing sections. Each end projection is generally oval-shape in cross-section so as to form two opposite end faces and two opposite side faces. The end faces are in sliding contact with the inner surface of the cylindrical portion of the bearing section.

Abstract: A coupling mechanism for quickly coupling a rotor body to its drive and driven journals and obtaining radial and axial alignment thereof in a closely confined space is provided. The coupling mechanism includes a split ring collar and a clamping ring securely holding in appropriate placement a chamfered split ring for radially and axially aligning the rotor and the journals, referred to as co-axial alignment.

Abstract: A medical instrument includes a handle for manipulating the instrument, a tool head, and a tube element for joining the handle and the tool head, the tube element having a first end and a second end, a first coupling for releasably coupling the first end of the tube element and the handle, and a second coupling for releasably coupling the second end of the tube element and the tool head, whereby the tool head, tube element and handle are all readily separable from each other.

Abstract: A torque transmitting, bicycle frame coupling which connects to the frame tubes, replacing a portion of those tubes and having teeth on their engaging faces. Proper installation of two such couplings allows up to a 25 inch men's style bicycle with up to 700C (26 inch rim diameter) wheels to be cut in two pieces so that it fits in a suitcase with a combined height, width and girth measurement no larger than 62 linear inches and then be put back together with no loss of original frame geometry or stiffness. Each coupling is actuated, pulling the bicycle pieces together and joining them through use of specialized teeth under compression by a threaded lug, a removable-shoulder lug with a removable shoulder and a threaded coupling nut. The removable shoulder makes the nut and shoulder replaceable, and makes possible an additional shoulder on the tube connecting end of the removable-shoulder lug to keep the nut from slipping onto the frame and scratching the paint.

Abstract: A combination rake/hoe device integrally formed on a common structural member and usable in an alternative arrangement with an elongated handle includes a rake portion having a series of rake teeth mounted in a spaced, substantially parallel array along the length of the common structural member from a first to a second end thereof and a hoe blade mounted on the structural member at a location approximately midway between the first and second end with the hoe blade extending oppositely of the rake teeth from the structural member. The hoe blade has a sharpened edge substantially parallel to the structural member and extending about one-half the length between the first and second ends. A Y-shaped mounting member integrally formed with the structural member has a pair of arms extending from respective ones of the first and second ends to a common junction at a base member. The base member has a generally flat configuration with at least one hole for receiving a bolt for attaching the base member to the handle.

Abstract: A coupling mechanism for quickly coupling a rotor body to its drive and driven journals and thereby obtaining radial and axial alignment thereof in a closely confined space is provided. The coupling mechanism includes a split ring collar and a clamping ring securely holding in appropriate placement a chamfered split ring for radially and axially aligning the rotor and the journals, hereinafter referred to as co-axial alignment.

Abstract: An apparatus for the detachable coupling, particularly of gripping devices or corresponding tools on robot arms or the like, is disclosed. The apparatus generally comprises two flange elements fastenable at the gripping device and robot arm, a receiving recess on one of the flange elements and an engagement element on the other, wherein the engagement element is inserted into the recess and one of the flange elements is penetrated by a locking pin in the locking position.

Abstract: A vehicle steering linkage includes an intermediate tube which extends across the vehicle between the steerable wheels of the vehicle. The intermediate tube transmits steering force from one steerable wheel of the vehicle to the steerable wheel on the opposite side of the vehicle. The ends of the intermediate tube are internally threaded and receive externally threaded portions of other parts of the vehicle steering linkage. A clamp placed around each threaded connection is tightened to prevent relative rotation between the threadedly interconnected parts. A plurality of retaining rings swaged on the intermediate tube locate the clamps axially on the intermediate tube. When the clamps are not tightened they can rotate freely on the intermediate tube between the retaining rings.

Abstract: A nose guide including a fastening mechanism for attaching the nose guide to a harness frame on a weaving loom. The fastening mechanism includes a pair of elongated straps and a pair of bosses carried on the inner surfaces of the straps which are provided to fit within elongated complimentary recesses provided in the straps. Fasteners extend through the bosses for securing the opposed straps together for attaching the nose guide to a slat of the harness frame.

Abstract: Quick-disconnect couplings for three-piece rotors in a two-rotor continuous mixer for plastic materials enable a main rotor section (or "main rotor body") of each rotor to be uncoupled from a drive journal located at one end of the main rotor section and a driven journal located at the other end of the main rotor section.

Abstract: A fastener assembly for securing first and second members (12, 14) to one another includes a cylindrical body (16) to be received and secured within a sheath (40). The cylindrical body includes a pair of longitudinal recesses (30, 32) extending in its external surface, and a spherical member (24) extending from the end thereof. The sheath includes a cylindrical bore (42) for receiving the body with a pair of ribs (44, 46) extending into the bore for alignment with the recesses. The spherical member extends from the sheath and is slotted (26) for retention against an outer surface (14a) of the second member. The ribs taper from an enlarged end (58) to be frictionally secured within the recesses for axial retention and anti-rotation.

Abstract: A coiling point holder for a spring making machine precisely fixes the angular and axial position of the coiling point relative to the holder and allows for the pre-established coiling point positions to be replicated upon reversing or replacing the coiling point. The angular position of the coiling point is fixed by a diametral slot of an insert which is angularly fixed in the holder.

Abstract: Microphone boom holder assembly comprising a short, solid base rod or tube member adapted to be receivingly engaged in a tubular supporting leg of a music stand or an A-frame recording assembly, a top shoulder, a securing member, preferably a rollpin or knurled nut, and a threaded upper rod. The base member is preferably made of a solid piece of aluminum with a plurality of grooves extending externally along its length. The base member is inserted into a tubular supporting leg of an A-frame music recording assembly to the point at which it is stopped by the shoulder. The aluminum provides sufficient strength to prevent the boom holder of this invention from breaking under the weight of the microphone boom or other holder unit under vibrationally stresses use conditions.

Abstract: A mixer that includes separate connectable motor and mixing housings, which motor housing includes an electric motor that turns an output shaft that extends into the mixing housing. The mixing housing is open to admit a cup containing a material for mixing, which mixing is accomplished by turning the motor output shaft whereto the handle end of a spoon is releasable mounted. The spoon head end is for turning in the material, which spoon mounting is a longitudinal slot in the output shaft end to accommodate the spoon handle end fitted therein and a close fitting resilient sleeve telescoped over that output shaft end, the resilient sleeve interior adhering to the spoon handle edges.

Abstract: A fuel pump for an internal combustion engine has a rotor which is driven by the extended, rotating, mounting shaft of an electric motor armature. The shaft, with a round cross-section, extends through a round hole in the rotor with a firm fit but the shaft is slotted axially to receive the bight of a U-shaped wire which has slightly diverging legs. The rotor has axially directed, tapered, drive holes spaced from the axis on each side of the hole in the rotor. The legs project into the tapered drive holes and are retained by the resilience of the U-shaped wire.

Abstract: A locking structure for a spring-loaded, pushbutton pin coupler, the inveon prevents inadvertent or accidental depression of a "button latch" pin which can result in an uncoupled joint. The present locking structure cooperates with a pushbutton pin connector such as is commonly used on collapsible or extendible arms or legs. According to the invention, a conventional button latch pin is provided with a locking plate at its inner end, rotation of the pin after coupling of joint with the pin causes the locking plate to also rotate into engagement with a fixed pin element carried by the structure coupled by the pin, thereby preventing displacement of the pin from the locked position.

Abstract: A shock absorber for use in toys comprising a rod for supporting a wheel, a retainer slidably along the rod, and a spring interposed between the lower section of the rod and the retainer which forces the retainer upwardly. These members can be pre-assembled as unit kit. When the shock absorber is mounted on a chassis member, the retainer is depressed downwardly against the biasing force of the spring and the rod is inserted into a bore formed on a chassis member through a opening side groove thereon. After that, the retainer is held in a recess on the bottom of the chassis member so that the rod is reciprocable along the retainer and the bore of the chassis member to absorb the vibration or shock from the wheel.

Abstract: A disengageable coupling generally of the double slider type includes first and third components fixed to the end of shafts to be coupled. A second spider component is slidingly coupled to the first component by interlocking mating surfaces that permit limited radial sliding but prevent axial movement of the spider component. The spider component and third component have disengageable clutch surfaces which also permit radial movement of the spider component with respect to the third component.

Abstract: A connector assembly adapted to quickly connect and disconnect tools and stem sections in wireline tool strings. Connector assembly (10) comprises box end (12) and pin end (14) adapted to be slidably engaged and locked by rotating either end 90.degree. relative to the other in either direction. Connector assembly (10) is released by the direct application of manual force to ears (48, 50) of locking plate (38) accessible in flutes (26, 27) of box end (12). Once the locking plate is retracted, pin end (14) is rotated 90.degree. in either direction relative to box end (12) and then withdrawn axially from box end (12). Flats (130, 131) are provided on box end (126) and pin end (128) to indicate relative rotational alignment. Disclosed also are provisions for limiting the rotation of axially spaced lugs (138, 140) before the lugs are axially aligned with annular channels (142, 144).

Abstract: This invention discloses an electrical fuel pump for a small motorcycle engine including an intake socket for introducing the fuel into the pump, a gerotor pump for compressing the incoming fuel, a discharge socket for discharging the compressed fuel from the pump, a DC motor for driving the gerotor pump, a coupling for transmitting the rotation power of the motor to the gerotor pump, and a casing for receiving the intake socket, the discharge socket, the gerotor pump, the coupling and the DC motor therein. The gerotor pump has a pair of engaged rotors, including a toothed inner rotor and a toothed outer rotor disposed eccentrically relative to each other, with a plurality of outer and inner teeth being, respectively, formed on the outer periphery of the inner rotor and on the inner periphery of the outer rotor so that the outer rotor may be driven by the inner rotor through engagement of the inner and outer teeth.

Abstract: A torque transmitting assembly comprises a shaft, an article mounted on the shaft and a device secured to the shaft for transmitting torque between the shaft and the article. The device comprises an element which extends at least part the way round the shaft and fricitionally engages the shaft at two or more locations which lie in a first plane extending perpendicular to a second plane in which lies the longitudinal axis of the shaft. The first plane forms an angle with a third plane extending perpendicular to the longitudinal axis of the shaft, which angle is no greater than tan.sup.-1 .mu., where .mu. is the coefficient of friction between the shaft and the element.

Abstract: A two-stage gear pump with two gear sets each having a spur gear telescoped onto a slotted drive shaft with a press fit and also positively keyed to the shaft. An annular groove is formed around the shaft adjacent the closed end of the slot in the shaft and enables the slot to be relatively short in axial length so as to reduce manufacturing problems and to enhance the press fit between the shaft and the first stage spur gear.

Abstract: An improved connection assembly which saves space and eliminates the need for many conventional fastener means such as nuts and flanges. The assembly includes a receptacle for accepting and engagement member, wherein a small amount of clearance is present between the receptacle and the engagement member. The engagement member includes a slot having two substantially parallel surfaces. A threaded fastener is used to fix the engagement member within the receptacle by passing the fastener through an opening in the bottom of the receptacle and causing the threads of the fastener to cut into and engage the surfaces of the slot.

Abstract: A connection for quickly mounting and removing wheels from a trailer, without removing or replacing lug nuts. The wheel assembly includes a non-rotating shaft or axle which serves as its journal. This journal is inserted and received snugly within a sleeve rigidly secured to the frame of the trailer, and pin and other connecting elements are added to prevent relative rotation and axial movement between journal and sleeve. Various embodiments are disclosed, including a simple pin dropped into aligned transverse openings in the two members and interfitting members on journal and sleeve which halt inward movement of the journal and its rotation, such as an axial pin and hole, radial slot and key, and touching flat surfaces on the two members.

Abstract: An improved structure for assembling a gear to a shaft to be rotatably mounted in a housing including a rotatable shaft with a projection member radially extending therefrom and with the hub of a gear slidably mounted on the shaft so that one face of the hub of the gear is adjacent to and opposed to one side of the projection member and a fastening member cooperable with such hub face and opposed side of the projection member to restrain rotational movement of the gear relative the shaft.

Abstract: A coupler assembly having male and female coupler members, the female coupler member having at least one linear open ended slot therein adapted to receive a drive pin on the male coupler member, the female coupler member also having an annular opening angularly displaced with respect to the linear slot, the male coupler member also having a depressible locking pin adapted to be depressed by the female coupler member as the drive pin is inserted into the linear slot, the locking pin being positioned to enter the annular opening in the female coupler member when the projection reaches the inner end of the slot, thereby locking together the coupler members.

Abstract: A dart comprises a shaft having a flight lock for securely mounting a flight on the shaft. The flight lock comprises a threaded post extending rearwardly from the shaft body and a flight holder mounted on the post. The flight holder has a threaded axial bore at its front end for receiving the post and an X-shaped slot at its rearward end which extends forwardly to a position overlapping the bore. A flight is inserted into the slit and is pushed forwardly until it enters the back of the bore. The flight holder is then threaded onto the post until the post engages the flight and wedges it between the post and the wall of the flight holder defining the bore. In another embodiment of the invention, the flight lock comprises an x-shaped slit extending forwardly from the rearward end of the shaft. A locking hole extends transversely through the shaft at a position rearward of the forward end of the slit.

Abstract: A wire mounting structure for a vehicle cruise control has an upper plate 20a of a connector 20 formed with a through-hole 21a and a notch 22, and a lower plate 20b formed with an enlarged hole 21b for receiving the lower end of a rod 6b.

Abstract: A limitedly shiftable overlap connection between two platelike parts, as between a U-rail and a covering or blocking platelet of connection rod fittings in which the parts can be brought into connection with one another through a simple snap plug coupling without the need for riveting or welding.

Abstract: The invention relates to a collapsible cabinet, comprising end ladder structures (3) on the gables of a cabinet and door frame structures. Both of these structures include upright posts (7) and horizontal braces (9) therebetween, the latter being fastened between the upright posts by means of screws (15) extending through said upright posts. Horizontal braces (9) and upright posts (7) define rectangular areas, the sides of horizontal braces and upright posts facing said areas being provided with a groove (13, 14) for receiving cover boards which cover such areas. The broad sides of upright posts (7) of end ladder (3) are placed against the ends of horizontal braces (9) and provided with two arrays of holes (16) extending on either side of the ends of horizontal braces (9).

Abstract: An end connector for double-pin track shoes or the like receives a pair of pins having arcuate grooves therein. The connector includes pin receiving openings having small diameter pin engaging arcuate surfaces, and large diameter arcuate grooves therebetween which nest arcuate portions of a spring therein. The spring also includes resiliently stressed portions that snap into the arcuate grooves in the pins when assembled, and a cap screw operatively connected between two walls of the connector clamps the connector onto the pins, thus providing double protection for maintaining the connector on the pins.

Abstract: A pool exercise device includes a pair of supports having upright portions having a slot therein. End members having a regular angular geometric shape are removably positioned in the slots. Rods fixed to the end members project colinearly and are connected by a sleeve. The height of the rods is adjusted by removing the end members from the slots, selectively rotating, and returning the end members to the slots for securement therein.

Abstract: A sheet metal panel comprising a bent region is disclosed. The region defines a first arc of intersection with a first plane and a second arc of intersection with a second plane. The second arc has a radius of less than twice the thickness of the panel.

Abstract: A prosthetic ankle having an elongated tubular shank, which provides bending. The shank is part of a monolithic ankle with the lower portion being a flexure joint. The flexure joint has a flexing post defined by an entrapment kerf. The entrapment kerf allows relatively free movement of flexure within defined limits in axial rotation, dorsi and plantar flexion, inversion and eversion. The kerf surfaces provide resistance to axial rotation during dorsiflexion.

Abstract: A member for mounting a suspension rail for hanging exhibits such as paintings is adapted to be secured to a wall near the ceiling by screws. The member has a base plate and a supporting projection extending horizontally from the base plate. The base plate has a pair of inclined surfaces at both sides of the supporting projection. The projection is formed with a horizontal slit to form an elastic piece to facilitate the engagement of the suspension rail.