Abstract: A direct-acting pressure-balanced linear valve (1) is provided with a hollow, displaceable sealing tube (19) which has a valve seat (20) and a valve body (49) having a valve seat seal (21). A drive unit (7) is arranged outside the media flow on one side and next to the sealing tube (19). A toothed segment (15) at an extension lever (14) of the drive unit (7) engages with a toothed segment (18) at the sealing tube (19). The drive unit (7) may be detached from the fluidic housing (2) without interruption of the media flow.

Abstract: A valve comprises a valve housing (2) with a valve inlet (11), a valve outlet (12) and a passage (66) extending through the valve housing (2) from the valve inlet (11) to the valve outlet (12). A valve seat (5) is provided in the passage which comprises a valve sealing surface (50). Further, the valve comprises a blocking element (3) adapted to be moved at least partly into the valve seat (5) for blocking the passage by abutment on the valve sealing surface (50), the blocking element being moved along a direction (102) extending under an acute angle to the plane (90) in which the valve seat (5) is arranged. The valve sealing surface (50) of the valve seat (5) is spherical in shape.

Abstract: A packing system for valves includes a preformed packing, an upper packing cup, a lower packing cup, and a threaded bushing or a gland yoke capable of capturing the upper packing cup when the system is installed in a stuffing box. The preformed packing includes an inner cylindrical shell surrounded by an outer cylindrical shell. Two evenly spaced perforated metal sheets are provided intermediate the inner and outer cylindrical shells. The preformed packing is compressed between the upper and lower packing cups to form a tight seal around a shaft passing through the stuffing box. When the preformed packing is compressed, the perforated metal sheets engage the upper and lower packing cups. When replacing the preformed packing, simply lifting the upper packing cup away from the stuffing box will also cause the preformed packing to be lifted out of the stuffing box.

Abstract: An expansion valve having a valve element, which valve element co-operates with a valve seat arranged between a first port and a second port in a housing, and is movable by an operating device in one direction and by a restoring device in the opposite direction along the same axis relative to the valve seat. It is desirable to make the properties independent of the operating direction in which the refrigerant flows. For that purpose, the valve element is connected to a first pressure surface arrangement, which comprises first pressure surfaces of substantially equal size acting in opposite directions, on which the pressure in the first port acts when the valve is closed, and to a second pressure surface arrangement, which comprises second pressure surfaces of substantially equal size acting in opposite directions, on which the pressure in the second port acts when the valve is closed.

Abstract: A seat structure for a ball valve which includes a seat member formed by rolling up an alternate stack of a thin steel plate and a thin graphite plate. The seat member is provided with a fixture portion fixed into an inner periphery of the valve body and a ball contact which is in contact with a surface of a valve ball provided between the inflow vent side and the outflow vent side. The seat structure improves an anti-abrasion and enables a secure functioning of the ball valve at a high temperature and high pressure.

Abstract: A valve for regulating a flow of gas, has a valve body with an inlet for the gas to be regulated, an outlet for a regulated flow of a gas, a valve seat with a valve opening, a moving closure part having a tensioned membrane mounted inside the valve body and a plunger, which is movable by a plunger actuator, whose end acts on the membrane, causing the closure part to close and open the valve opening and regulate the flow of gas through same. The flow of gas can be simply and inexpensively regulated, with great accuracy and repeatability and which forms a hermetic seal when the valve is in the closed position, a rigid, flat plate is be arranged opposite the valve seat the plate having a surface area which is at least equal to the surface area of the valve seat.

Abstract: A lift assembly for use in a repair shop or the like. The assembly includes at least one mast extending generally vertically, and a relatively movable component including a lift frame assembly. The lift frame assembly includes at least one longitudinal member and at least one work-engaging member. A vertically movable lifting assembly is also provided, which includes a movable element. The lift frame is movably secured to the mast by at least one guide assembly which moves substantially vertically along the track of said mast. The mast includes a portion with a slight curve or straight section inclined in the direction away from said fork leg while the curved or other mast allows free but confined movement of said guide assembly as said lift frame travels vertically throughout a range of vertical positions.

Abstract: The present invention describes a method and apparatus for inserting a cable, in a duct, tube, or other hollow, elongated structure which can be sealed at the point of insertion of the cable to create a pressure housing. The invention comprises positioning a tube in the well, positioning a source of cable adjacent the well, and inserting the cable through a pressure housing into the tubing by means of polymer foam mixture under pressure. A mechanical force may be employed on the fiber optic to overcome any resistance created by the lubrication fitting at the pressure housing. The foam is in the form of a concentrate, which, when mixed with a liquid source and air, expands significantly when injected into the capillary. Due to such expansion, the foam adheres to the surface of the cable, creating a viscous drag against the cable in the direction of pressure flow.

Abstract: A cam assembly for a hoist mechanism includes a cam member, a pair of springs and an input shaft. The cam member has a cavity defined by an inner periphery of a side wall and floor. Cutout portions extend radially outwardly from the inner periphery of the cavity. The springs include a bow-shaped body portion positioned between first and second connection end members. The body portion further includes an outwardly extending detent, each detent extends into a cutout of the cam member to operatively connect the cam member to the springs. The input shaft has a through hole. The first connection end members of each spring are inserted into the through holes of the input shaft, thereby operatively connecting the springs to the input shaft with a reduced number of components.

Abstract: A mechanical winch includes a ratchet lever having a single pawl which may be positioned in either one of two orientations in order to preclude clockwise or counterclockwise movement of the winch, drum or reel. In each orientation, the ratchet lever may also be positioned in a free wheeling position for the drum.

Abstract: A four-cycle engine has a base plate provided on a side of the engine and having an opening communicated with a carburetor. A choke plate is pivotally mounted on the base plate, and a choke lever is pivotally mounted on the base plate. A transmitting means is provided for transmitting the opposite rotation of the choke lever to the choke plate so as to rotate the choke plate.

Abstract: The present invention relates to a mixer for mixing two fluids, the mixer comprising a power source (5) with a rotating transmission shaft (7), a hollow rotor (6) to be submerged in a first fluid (8) and arranged to rotate with the shaft, wherein at least one end of the rotor comprises an opening or openings for supply of a second fluid (9) to the hollow rotor (6), and jet openings (10) are provided in the side surface of the rotor through which the second fluid (9) is discharged into the first fluid (8) surrounding the rotor. To achieve a better operating efficiency, the mixer has a tight liquid seal (14) shaped to cover and isolate substantially the entire portion of the rotor that is above the first fluid.

Abstract: A low cost antipenetration pan for use on fractionation trays is attached to the bottom of downcomers via releasable clips which slide through slots in the bottom of the downcomer. The clips are at the end of the legs of the pan, and the legs may slide upward through the slots to allow the legs to nest within the downcomer during shipment.

Abstract: In an air spring strut for a wheel suspension of a motor vehicle including an air spring head to be mounted to a vehicle body, a shock absorber having a piston rod resiliently supported in the air spring head and a cylinder receiving the piston rod with a damper piston, a tubular air spring piston mounted to the cylinder and extending therefrom into a cylindrical extension of the air spring head and a rolling sleeve bellows connected to the air spring piston and the cylindrical extension, the air spring piston is connected to the shock absorber cylinder elastically and has at its opposite end a slide structure disposed around a guide structure extending from the air spring head for slideably supporting the end of the tubular air spring piston to prevent adjacent wall portions of the rolling sleeve bellows from contacting each other.

Abstract: A pressure holder, filled with a medium and having a gas mass that pressurizes the holder, especially for volume compensation in a vibration damper. The gas mass including a deformable enveloping body with a wall in which a pressurized gas is enclosed. The wall of the enveloping body is multi-layered, with at least one layer being a metal foil.

Abstract: The invention relates to a level control arrangement for a vehicle having air springs (8) via which the chassis of the vehicle is suspended relative to at least one vehicle axle. A pneumatically-controllable directional-control valve (18) is arranged between the compressor (4) and the air dryer (6) and the directional-control valve (18) has two control inputs (20 and 22). In the base state of the level control arrangement, the compressor (4) is connected via the pneumatically-controllable directional-control valve (18) to the air dryer (6). When the control line (26) of the first control input (20) is connected via a controllable directional-control valve (30) to the atmosphere, the pneumatically-controllable directional-control valve 18 transfers into the other switching state and the air spring (8) can be vented via the air dryer (6).

Abstract: A clearance which is not filled with a vibration-proof member is provided between an inner cylinder and an outer cylinder. A stopper member which is made of an elastic member is disposed in this clearance. When the amount of relative displacement, in the diametrical direction, of the inner and outer cylinders has exceeded a predetermined value, the stopper member is elastically deformed. A clearance in the axial direction is secured between the stopper member and that portion of the vibration-proof member which connects the inner cylinder and the outer cylinder. In this manner, a function of switching the spring constant can also be obtained in a solid type of mount without a perforation in the vibration-proof member which is made of an elastic member to connect the inner cylinder and the outer cylinder.

Abstract: A clamping device includes a clamp arm (2), an operating lever (3) for pivotally operating the clamp arm (2), and a toggle mechanism (T) provided in connection with the operating lever (3). The clamp arm (2) is formed with a guide path (2a) that intersects a direction in which the clamp arm (2) pivots so that an output member (9) of the toggle mechanism (T) is guided along the guide path (2a). Accordingly, workpieces (W) of heights that can vary over a wide range of up to several centimeters can be firmly fixed without the necessity of performing a troublesome adjustment operation.

Abstract: The sheet feeding device comprises a frame with a fixed receptacle for the sheets and pick-up rollers mounted on a first shaft which is pivotingly fitted on the frame by means of a rocking support device. A second shaft is linked to a motor and bears, by means of two pivotingly mounted support members, the first shaft and the rollers. Two pinions integral with the shafts and an intermediate pinion provided with a braking member allow the rollersto be brought into rotation starting from the shaft. Accordingly, the latter commands rotation of the entire support device and presses the rollers against the uppermost sheet with a surface force which increases when the resistance to movement of the uppermost sheet increases. Extremely reliable paper feeding operation is achieved as a result, with a simple construction method and at low cost.

Abstract: A paper size discriminator of the size of a stacked printing paper includes a pair of members which are relatively displaced in the direction of the width of the loaded paper. A long detecting plate is attached to one of the members. The detecting plate includes a grove that is progressively stepped in a direction transverse to the width of the paper. A pin sliding in the groove is attached to the other member such that the size of loaded paper is ranked in the direction of the width by detecting the displacement of the pin. The rear end keep plate is displaced corresponding to the length of paper wherein the length of the paper is discriminated by combining output signals from first and second detecting switches.

Abstract: A paper supply tray of a printer, including: a main body, for receiving sheets of paper or other printable material, insertable into and detachable from the printer; a guide, for supporting an edge of the received sheet, capable of sliding in the main body; a locking mechanism for immovably locking the guide; and a plurality of position determining holes formed in the main body along a path where the guide is slidable.

Abstract: A sheet conveyor for a delivery of a sheet-fed printing press, having at least one operatively revolving gripper bar guidable in a sheet conveying direction along a sheet guiding surface. The gripper bar including grippers having gripper fingers pivotable in a gripper cycle for gripping a sheet respectively conveyable by the gripper bar, is provided with a front spoiler for shielding an intermediate space located between the gripper bar and the sheet guiding surface. The front spoiler being pivotable in a cycle correlated with the gripper cycle and in the same direction as the gripper fingers.

Abstract: The present invention relates to a deceleration device for flat products, such as signatures. A deceleration device has a plurality of seizing elements attached thereto for seizing signatures at their respective leading edge while the signatures are emerging from a conveying device. The leading edge of a signature travels on a first path, whereas the trailing edge of the signature travels on a second path, which creates a larger air-drag coefficient on the signature than the first path.

Abstract: The present invention relates to a sheet registration system that uses a rigid arm having a sheet engaging surface to move sheets towards a registration position. The arm is mounted to a support member and is located adjacent a sheet store. The arrangement is such that relative movement between the support member and the sheet store causes the sheet engaging surface of the arm to engage a sheet in the sheet store. Pivoting of the arm then causes the sheet engaging surface to move the sheet into the registration position.

Abstract: A diverter wedge for a pinless folder is adapted for cooperative association with a diverter guide mechanism operating to direct the lateral disposition of the leading edge of a signature relative to the wedge to one of a plurality of collation paths. The diverter wedge includes an elongated bar having a longitudinal axis and a generally triangular cross section transverse to said longitudinal axis. The bar is fixed in position and also includes a base, a vertex edge opposite the base, and planar diversion surfaces diverging from the vertex edge, an air inlet port connectable to a source of pressurized air, and a plurality of air discharge ports connected to the air inlet port and intersecting one of the planar diversion surfaces. At least one air discharge port intersects the vertex edge.

Abstract: An improvement in sheet sorters in which movable bins are incremented past a sheet entrance and the bins are cantilever-mounted and incremented in the sorter from only one side of the bins. The unsupported side or end of at least one of the cantilevered bins is temporarily supported to prevent its sagging from the weight of sheets loaded therein, or other causes. Specifically, the free end of the bin which is currently in position to receive sheets entering the sorter from the sheet entrance is supported by a small rotatably driven indexing bin support, such as a star-wheel, which is mounted to allow unrestricted access to the bins for the removal of stacks of sorted sheets.

Abstract: A personal convenience unit for use with a gaming machine provides various compartments and amenities that enhance the comfort and convenience of the gaming machine for a patron, thereby enabling and encouraging longer periods of play and greater customer loyalty. The personal convenience unit includes a base unit with at least one interior compartment that is separate from the interior portions of the gaming machine and which is lockable by the patron for securing personal items of the patron. The base unit may have a portion upon which the gaming machine rests, and a portion that extends on the side of the gaming machine. The personal convenience unit includes a personal amenity cabinet, preferably on the side of the gaming machine, which includes an open and recessed compartment to provide convenient access to and concealment of other personal items such as coin cups and the like.

Abstract: A bridge bidding device having a keypad visible only to the user and a display board visible to the other players. The keypad and display board are each arranged in two rows of ten blocks. The keypad has bidding indicia on each block that includes the numbers one through seven, the four card suits and NT, and PASS, DBL, REDBLE, SKIP BID and ALT. The keypad also has the control indicia for BID, ER and CLOSE. The keypad blocks are also touchpads for the transmission of the bidding and control information. The top row of the display board can exhibit the numbers one through seven and PASS, DBL, REDBLE, SKIP BID and ALT. The bottom row of the display board can exhibit the four card suits and NT. The bidding information is exhibited by means of light emitting diodes. A large-scale silicon integrated active component and support components mounted on a multilayer printed circuit board controls the accumulation and dissemination of information.

Abstract: The manipulable puzzle of the present invention includes a housing, multiple sliding bars, and multiple movable pieces. The housing has a support surface with an area defined by walls. The sliding bars are retained on the support surface by overhangs extending from opposing walls such that the sliding bars are removable and can slide across the support surface. The sliding bars each have a channel and peak pattern through which the movable pieces are slid as the sliding bars are manipulated to provide adjacent channels for the movable pieces to move through.

Abstract: A slidable block puzzle game played by maneuvering rectangular blocks in a smooth surfaced box with low walls is hinged to a lid of the same size that contains partitions that enclose each of the rectangular blocks in their initial game-starting position when the lid is closed.

Abstract: A board game apparatus is disclosed for playing a competitive, fun, and educational game enabling the development of judgmental and reasoning skills and offers or involves chance, personal notions, perception, skill, and strategy with a board designed containing a path of blank and/or marked spaces and/or blocks maintaining a progression and continuity about the board and from a "Start/Finish" block the concept is that players through usage of a dice, a spinner format uniquely utilized in offering modification of the game pieces' movement and/or other items or features, moving their pieces within the rules, a winner may be determined by reaching the "Finish/Start" block.

Abstract: A four handed chess-type board game played on a 228 square board consisting of a l0.times.10, 100 square central playing area with four 32 square extensions consisting of two 1.times.10 rows and one 1.times.12 row on the outermost edge. 88 playing pieces are used and include: the standard knight, bishop, rook, queen, an enhanced king and pawn, and four new pieces called the archbishop, chancellor, wizard, and dragon. In team play, the object is to pin one opposing king and to checkmate the other opposing king. In individual play, the object is to eliminate two of the opposing kings and to checkmate the last opposing king.

Abstract: A multiplication capturing and recapturing game system is disclosed. The system comprises 2 equilateral-triangular game boards, a pair of eight-sided dice and 36 playing pieces. The game can be played by 2 to 4 players. Each player throws two dice to begin a turn and captures or recaptures a location to end the turn. The player who finishes all 9 pieces first wins the game.

Abstract: An apparatus is provided that is a computer-processor-based word game in which the object is to transform a first word into a second word using the last two letters of the first word as the first two letters of the second word where the second word fits the definition given for that word. The more words correctly transformed, the greater the number of points awarded.

Abstract: A magnetic toss game simulative of a sports game. The game is comprised of a number of flat magnetic disks simulating hockey pucks, soccer balls, footballs, basketballs, golf balls, and the like. Each type of magnetic disk has a corresponding magnetic target simulating a hockey net, soccer goal net, football goal post, basketball net, golf green with hole, and the like. The magnetic target is mounted on a refrigerator, or other flat metallic surface, preferably vertically oriented. The magnetic target mounted on the flat metallic surface forms a game board capable of magnetic interaction with the magnetic disks.

Abstract: A glide target comprising a fuselage having forward and aft ends. Movably attached to the fuselage is at least one control surface, while releasably attached to the fuselage is a tow line adaptor. Disposed within the fuselage is a tow line adaptor release mechanism which mechanically couples the tow line adaptor to the control surface in a manner wherein the (control surface is effectively locked into a set position until the tow line adaptor is detached from the fuselage. The glide target further comprises a glide target parachute which is disposed within the fuselage and a parachute launching mechanism which is also disposed within the fuselage and is used for selectively deploying the glide target parachute therefrom. The tow line adaptor, when attached to the fuselage, is cooperatively engaged to the parachute launching mechanism in a manner preventing the deployment of the glide target parachute from within the fuselage.

Abstract: A dartboard comprises a grid frame having sectors being provided with at least a receding guide opening at two lateral opposite sides thereof respectively; gliding plates having at least a projecting slide block extending out of two opposite lateral sides thereof respectively to slidably accommodate to said receding guide opening; soft target plates being inserted into, filled with, and fixed in the receiving recess; and a front metal grid having a rear end assembling with the front end of said grid frame.

Abstract: A brush seal is mounted between rotary and stationary components in a flow stream having solid particles. A gap is formed through the brush seal bristles and a deflector plate is disposed to catch and deflect solid particles on the upstream side of the brush seal to direct the particles through the gap to the downstream side of the brush seal. In this manner, the solid particles of the flow stream do not erode or otherwise deteriorate the brush seal bristles or ancillary parts of the brush seal. The deflector plates may be directed axially upstream, at an angle to a plane passing through the brush seal or may comprise an arcuate configuration directed upstream.

Abstract: A fluidic feedback pressure regulation system employs one or more fluids within a mechanical seal to control one or more other fluids. The system includes a fluid manifold and a movable differential pressure valve, both of which are completely mounted within a bore in the seal gland. The valve is connected to several fluid distribution networks, so that the valve can establish fluid communication between a regulated fluid (such as barrier or process fluid) and either (1) a high pressure fluid supply to increase the pressure of one of the fluids, or (2) an exhaust vent in order to remove fluid from the fluid distribution, concomitantly reducing the fluid pressure in the seal. All the fluids utilized in the seal are regulated by the pressure system with respect to each other in order achieve, pressure-wise, optimal seal operating conditions. In particular, the fluids can be regulated during use to achieve certain leakage characteristics.

Abstract: A seal between a pair of relatively axially movable coaxial components is provided by a spring energised plastic seal which is located axially with respect to the outer component to separate a high pressure fluid area from a low pressure fluid area, the spring energised plastic seal has a plastic ring, the plastic ring defining a body portion and a pair of sealing elements, the sealing elements extending coaxially to the high pressure side of the body portion and being spaced radially by spring means, into sealing engagement with opposed surfaces of the two components, a projection extending axially from the low pressure side of the body portion adjacent the external diameter thereof, said projection engaging an axial projection on the outer component so that engagement thereof will support the plastic ring radially.

Abstract: There is disclosed a tubular packing which can be easily produced, and has satisfactory durability while maintaining excellent properties of exfoliated graphite such as cushioning properties and heat-resistance. There are prepared a sheet of exfoliated graphite sheet and two wire nets equal in size and shape to the sheet. The one wire net is superposed on an obverse side of the sheet in coinciding relation thereto whereas the other wire net is held in contact with a reverse side of the sheet in offset relation thereto, and this stack is curved into a tubular shape, and this tubular stack is compressed in a direction of a thickness of the sheet, thereby forming a tubular packing. Therefore, in the resultant tubular packing, the wire nets are embedded in the sheet. The wire net interconnects the opposite end edges of the sheet in a bridging manner, so that the tubular packing is continuous over the entire circumference thereof.

Abstract: An annular seal is provided between a turbine rotor disc and the adjacent static structure. The seal comprises rotor fins extending from the turbine disc for rotation therewith and an abradable honeycomb layer radially outward of the rotor fins. The abradable honeycomb layer is located on the inner diameter of a sealing ring attached to the static structure. The sealing ring is moveable in an axial direction so that in operation the honeycomb has one axial position for transient conditions and an alternative axial position for stabilized running. The seal clearance can thus be optimised at the two axial positions reducing the leakage flow through the seal.

Abstract: A wiper seal is disclosed which includes an elastomeric member having a metal support member adhesively bonded thereto. The elastomeric member has a first substantially flat surface that is perpendicular to a reference axis of the wiper seal, an outer peripheral surface that is substantially parallel with the reference axis, and an inner peripheral surface that forms an acute angle with the reference axis. The metal support member has a first leg portion that coincides with the outer peripheral surface and a second leg portion that coincides with the substantially flat perpendicular surface. The intersection of the first and second leg portions forms a generally sharp corner or at least a predetermined minimum radius size. When the wiper seal is installed in a recess of a housing, the substantially flat perpendicular surface is generally flush with the surface of the housing adjacent the recess to substantially eliminate recesses or pockets that could retain dirt and/or other contaminants.

Abstract: A sealing member is provided which can be spirally wrapped around an elongate article (e.g., a cable) comprises a strip of sealing material (e.g., gel sealing material), and at least one series of gripping elements situated adjacent to the strip of sealing material and extending beside a longitudinal edge of the sealing material. In use, the gripping elements cause the sealing member to grip an elongate article around which it is spirally wrapped. The sealing member may also include a support strip to which the strip of sealing material and each series of gripping elements are attached.

Abstract: A composite gasket for the door of an outdoor, electronic component containing cabinet includes a known type of gasket including an elongated hollow tubing for mounting on a door jamb of the cabinet, and a supplemental gasket of an electrically conductive material fixedly secured to one side of the hollow tubing and coextensive therewith entirely around the periphery of the door jamb. The known gasket provides a weather seal for the door. The supplemental gasket spans the gap between the door and the jamb established by the weather gasket for electrically interconnecting the door to the jamb and for sealing the door joint against electromagnetic radiations. The supplemental gasket is disposed entirely within the weather sealed space of the cabinet when the door is closed, and is so arranged as to provide no interference with the weather seal formed upon closing of the door.

Abstract: A sealing arrangement is provided to close off and seal a gap between undersurfaces of a machine tool installation and a coolant collection channel. The sealing arrangement includes a pair of lengths of sealing hoses inflated with air pressure to close off and seal the gap. The inflated hose seals accommodate the variable gap created by sloping collection troughs to simplify the construction thereof.

Abstract: A chuck has a chuck body, an actuating element limitedly axially displaceable in the body, a first set of guide pistons axially fixed in the actuating element, angularly spaced about the axis, and each forming a guide passage extending at a small acute angle to the chuck axis, and a second set of guide pistons limitedly axially movable in the actuating element, angularly spaced about the axis, interleaved with the axially fixed guide pistons, and each forming a guide passage extending at a small acute angle to the chuck axis. Respective jaw bolts slidable in the passages each have an outer end projecting forward from the chuck body and a rear end axially coupled to the chuck body. The outer ends of the jaw bolts of the axially fixed pistons define a fixed-jaw circle centered on the chuck axis and the outer ends of the jaw bolts of the axially movable pistons define a movable-jaw circle centered on the axis.

Abstract: A vehicle height adjust control apparatus, incorporating a slope determination apparatus, has a vehicle speed sensor, a vehicle height detector that detects a rear vehicle height of a rear portion of a vehicle body and front vehicle heights at the right and left front wheel positions, and actuators for changing the front and rear vehicle heights. In a case where the detected vehicle speed or an acceleration calculated from the detected vehicle speed is small and where the difference between the detected front vehicle heights at the right and left wheel positions is small and the averaged front vehicle height considerably deviates from a target vehicle height, a microcomputer determines that the vehicle is on a steep slope.

Abstract: A sole plate structure with shock absorbing effects for roller skates to provide roller skates with buffering resilience and permit safe and comfortable skating, includes two opposed side plates having an upper edge secured to the bottom side of a boot. Movable supports are secured to the rear ends of the side plates and are connected to a wheel by means of a securing shaft. The movable shafts are capable of upward and downward displacement. The front ends of the movable supports are connected to a rear shaft hole of a spring. The spring has a front shaft hole secured to a front threaded shaft secured to the front ends of the side plates.

Abstract: A roller skate, of the type having a carriage or frame on which a series of running rollers is arranged in a freely rotatable manner, the frame being provided with a device for fastening to the rigid sole of an item of footwear which is temporarily releasable to enable the position of the footwear and the carriage relative to one another to be altered. The fastening device has a pair of substantially stationary cross-members, each of which accommodates rotatable cam means which are connected eccentrically at the top to the rigid sole of the footwear in order to adjust the position thereof with respect to the carriage and to fasten it in the desired position.