Abstract: This invention relates to a rotary shifter of a bicycle including: a fixing seat mounted on the handlebar of the bicycle; a rotary lever mounted on the fixing seat on an identical shaft axis as the handlebar; a drag member for driving a derailleur cable to enable a derailleur to change gears; a limit member for driving the drag member to engage in linear movement within a specific stroke; a rotary member for being driven by the rotary lever; a screw driving member located on the rotary member for driving the drag member to engage in linear movement along the specific stroke; a locating mechanism for locating the rotary member at an angular position corresponding to each gear of the derailleur; and an over shift device for enabling the drag member to produce extra displacement necessary for over shift of the derailleur to change gears.

Abstract: A rotatable gripping surface for a derailleur-type bicycle gear shifting system is formed of a resilient material with axially extending alternating ribs and grooves. The ribs and grooves are spaced such that they fit naturally into the crooks of the rider's thumb and finger or fingers and the portion of the palm therebetween. The ribs provide an increased diameter to aid in the transmission of torque and to protrude above any mud which may have collected thereon. To further enhance the torque transmitting capabilities of the grip and the ability to remain effective in the presence of mud and other debris, the surfaces of the ribs are provided with a pattern of nubs. The hubs are engaged and deflected slightly by an operator's thumb and finger and the portion of the palm therebetween to transmit torque to the rotational grip.

Abstract: A housing comprising a unitary block is bifurcated to form a pair of arms between which a crank lever is pivotally mounted. A circular clamp is simultaneously formed at the end of the arms to bridge the arms. The arms are adjustably drawn together to close the clamp. The crank lever is an L-shaped bell crank in which the pivot point and handle, when extended, intersect perpendicularly at a corner, forming the elbow about which the cable is pulled.

Abstract: A bicycle brake device comprises a rotating device, a rotating shaft and a pair of pintles. Two recesses are formed on the rotating device to receive the heads of the front and rear brake lines, respectively. The rotating device has two chambers defined by two corresponding flanges of the rotating device. The first and second pintles are on the corresponding chambers, respectively. Each pintle has a slot and a circular hole at each of a top end and a bottom end of the pintle. The bottom circular hole receives hollow cylinder post. A hollow screw which has a through hole passes through the bottom slot and the hollow cylinder post. The first and second brake control lines pass through the corresponding through holes, respectively. One end of the first or second brake control line is positioned by the positioning hole of the screw bolt. The screw bolt passes through a washer, a nut, and the through hole. The springs are disposed between the corresponding pintles and the rotor.

Abstract: A bicycle speed change operation assembly wherein a speed change operation can be performed during a braking operation, and the speed change can be made in an optimum way in response to various running situations.

Abstract: A brake handle includes a brake body, a brake lever and a rotatable disk. Wherein a semi-circular slot is positioned within the brake body and the brake lever, respectively. The rotatable disk is disposed between the brake body and brake lever. Wherein the rotatable disk can be partially inserted into the slot of the brake body and can be further partially inserted into the slot of the brake lever so the brake body and the brake lever can be pivotally locked to each other. The rotatable disk comprises a groove defined in a periphery of the rotatable for receiving a brake cable and an opening defined in one side of the rotatable disk for receiving a brake cable nipple. The brake cable is connected to the brake via the brake body.

Abstract: An actuator assembly to produce mechanical power for a function in a bicycle or any other handlebar-steered device, which actuator assembly comprises a twisting part on the handlebar tube, a part to transmit the twisting motion into the tube from its open end, and equipment fitted into the handlebar tube to convert the twisting motion into linear motion. Equipment to convert the twisting motion of twisting part into linear motion of the power transmission device is fitted inside the handlebar tube and the twisting motion is transmitted by means of part which is fitted through the open end of said tube.

Abstract: Nubbed grips for hand-rotatable bicycle gear shifters have longitudinally elongated groups of nubs (50, 96, 142) that are angularly spaced apart by valley regions (44, 98, 156). Preferably, the elastomeric nubs are formed both on a cylindrical portion and an adjacent flanged portion of the grip. In an alternative embodiment, shark tooth nubs (142) offer leading faces (158) against which a hand of a rider may abut in either rotational direction for maximum torque transmission.

Abstract: A shifting apparatus for use on a bicycle for shifting a change speed device through a control cable. The shifting apparatus includes a support shaft attachable to a bicycle body, a takeup element rotatably supported by the support shaft for winding and unwinding the control cable, shift levers for rotating the takeup element, and a lock mechanism for maintaining the takeup element in a selected position. The takeup element includes a takeup portion supported adjacent one end of the support shaft, and a wall extending from the takeup portion toward the other end of the support shaft. The wall defines, in combination with the takeup portion, an accommodating space opening toward the other end for accommodating the lock mechanism. One of the shift levers has a proximal portion disposed between the wall and the other end of the support shaft and covering the accommodating space from the other end of the support shaft.

Abstract: A fastening seat of a bicycle brake lever comprises a base and a pull seat. The base is provided with a fitting portion for fastening the base with a bicycle handlebar and is further provided with an opening located centrally in the side wall opposite in location to the fitting portion for locating a brake cable. The pull seat of a U-shaped construction is fastened pivotally with a bicycle brake lever and is provided with a retaining slot located centrally in a crown portion of the U-shaped pull seat for location the brake cable. The fastening seat is suitable for use in mounting the bicycle brake lever on the left side or the right side of the bicycle handlebar.

Abstract: An improved brake lever includes a lever body, a protective strip and a cap. The lever body is provided with a longitudinal slot which has a narrowed slit merged into the lever body at both ends of the longitudinal slot. The protective strip can be readily received and retained with the longitudinal slot. The end portion of the lever body has a flat portion which is provided with a dowel hole. The dowel hole has a narrowed inlet. The bottom side of the cap is incorporated with a bead. By this arrangement, the bead of the cap can be readily received and retained by the dowel hole. Accordingly, a compact and firm engagement is ensured between the cap and the lever body. Consequently, an improved brake lever with above described advantages is achieved.

Abstract: A bicycle brake lever mechanism having a bracket mountable to a bicycle handlebar, a lever mounted for pivotal movement to the bracket and a brake cable connector connected to the lever. The cable connector is connected to the lever via an adjusting mechanism for so that the return position of the brake lever relative to a lever bracket may be adjusted to accommodate various sized hands. Further, the adjusting mechanism allows for adjustment of a lever ratio A which is defined mathematically by the distance between the pivot point of the lever and the pivot point of the cable connector on the lever divided by the distance from a set point on the brake lever to the pivot point of the lever.

Abstract: An operating lever device of the present invention includes housing 3, an operating lever 5 pivotably mounted on the housing 3 by a first support shaft 4, a first link 7 pivotably mounted on the operating lever 5 by a second support shaft 6, an operating cable 8 connected to an end portion of the first link 7 and extending outwardly through the housing 3, and means 9 for restraining the pivotal movement of the first link 7 in a manner that when the operating lever 5 is operated the end portion of the first link 7 may approach the first support shaft 4.

Abstract: A remote operation mechanism for a stroller is disclosed in which a fail-safe mechanism is reset to its initial position so as to be interlocked for every remote operation without fail, to thereby be able to automatically lock preventing operation of the system. The remote operation mechanism for a stroller includes a frame, an opening/closing operation lever having an end operable for ascending and descending along the frame, a pulley rotatable so as to be interlocked with the ascending/descending operation of the operation lever, a lock plate, an ascension regulating plate, a lock plate reset spring, a stopper formed on the lock plate and an operating projection formed on the pulley, wherein the operating projection abuts against the back of the lock plate.

Abstract: A detent spring for use in a rotatable grip actuating system for a Bowden tube motion translation system used to actuate a derailleur gear shifting system on a bicycle. The detent spring, which is formed of spring type metal has a U-shape, with one leg positioned in an elongated arcuate slot in a first member which rotates within a second member having notches on an inner surface which are engaged by a detent formed on the second leg of the spring.

Abstract: A bicycle brake lever (10) adjustable to very the leverage applied to a bicycle brake connected to a lever (10). The lever (10) includes a brake handle (14) having an elongated finger grip (50) and a transverse elongated mounting arm (52) joined at their proximal ends and integrally formed. The mounting arm (52) is attached to a handle mount (12) for pivotal movement about a fixed axis. A cable link (16) is attached to the mounting arm of the brake handle by a slidable attachment (44, 64) for slidable movement along the length of the mounting arm (52) toward and away from a fixed axis. The cable link (16) includes an attachment for attaching a brake cable (78) thereto. A user may fix the cable link (16) at a select position along the length of the mounting arm (52) against slidable movement.

Abstract: A motorcycle throttle clamp comprised of a pair of rectangular blocks having a semi-circular indentation on outer surfaces thereof. The semi-circular indentations are adapted to engage a round tubular handlebar of a motorcycle. The pair of rectangular blocks have a locking component. The locking component receives a motorcycle throttle therein to prevent the throttle from being operated.

Abstract: A motorcycle handlebar safety grip has a stopper (1) which has two main functions in preventing the rider from injury. Through the shape of both the clutch and brake levers on off-road motorcycles, and the positioning of the stopper (1) to the rear of the grip, it is not possible for these levers to come fully into the handlebars and crush a rider's fingers. This incident is most common when a rider falls to the ground and his hands are still in contact with the handlebars, resulting in the finger tips of the rider being squashed between the lever and the handlebars. Through the stopper (1) surrounding the circumference to the rear of the grips, a slope is created, therefore preventing the riders hands in wet weather conditions from sliding off either end of the grips and enabling the rider to gain greater control of the motorcycle.

Abstract: A mount for supporting a gear shift lever on a tightly undercurved road or racing style handlebar of a bicycle, comprising an annular attachment collar for placement over and close fit to the curve of the handlebar, with the attachment collar securable in place by compression between an existing hand brake lever mount and the handlebar. The attachment collar is defined by an annular wall preferably having varying length allowing for close fit in the inside and outside radii of the tight bend in the handlebar. Extending from the attachment collar is an extending member having a universal shift lever mount stud affixed to a distal portion thereof. The extending member preferably includes one or more angular changes allowing placement of the extending member clear of the brake lever simultaneously with thumb accessible placement of the shift lever relative to normal hand placements on the handlebar.

Abstract: There is disclosed a bicycle speed change operation assembly wherein the speed change operation can be performed during the braking operation, and the speed change can be made in an optimum way in relation to various running situations.

Abstract: A control device for the gear change of a bicycle comprises a single operating lever, preferably provided with two distinct arms for the gear change up shifting and down shifting, respectively, to which a ratchet mechanism is associated. The ratchet mechanism comprises a pair of opposed teeth adapted to cooperate with a ratchet wheel which is associated to a control rotor. In the application on a racing bicycle, the control rotor is rotatably mounted around an axis parallel to the longitudinal direction of the bicycle.

Abstract: A bicycle frame is disclosed wherein the down tube component comprises at least one aperture therein adapted for reception of an operating cable of the bicycle therein. The down tube is connected to the head tube and the bottom bracket of the frame, An open end portion of the down tube extends below the bracket so that cable threaded through the aperture may exit thereat below the bracket. A ferrule surrounds the aperture and helps to seal same from water which may otherwise penetrate into the tube.

Abstract: A twist grip cable system having a mandrel received over the handlebar of a bicycle and a pulling spool providing increased mechanical advantage which may be used for the full range of rotation or In the case of a variable mechanical advantage system, that is one with a variable radius spool, for only part of the range. To provide even greater mechanical advantage, with the spool complete dropped away, a groove or slot is provided in the mandrel into which the cable may fall.

Abstract: A combination of a control lever connector and a motorcycle having a hand control lever and a handlebar. The connector includes a split mounting bracket having a tubular portion surrounding the handlebar, where the control lever is attached to the bracket. The connector also includes a pair of complementary circumferential clamping members clamped around the handlebar, where at least one of the clamping members has an arcuate internal semi-circular groove. A lug is extending radially from one end of the bracket; and, and there is at least one compressible member placed within the groove between the lug and one end of the groove, where the compressible member is operable to return the mounting bracket to its initial position when the control lever is released.

Abstract: A bicycle brake lever (10) adjustable to vary the leverage applied to a bicycle brake connected to the lever (10). The lever (10) includes a brake handle (14) having an elongated finger grip (50) and a transverse elongated mounting arm (52) joined at their proximal ends and integrally formed. The mounting arm (52) is attached to a handle mount (12) for pivotal movement about a fixed axis. A cable link (16) is attached to the mounting arm of the brake handle by a slidable attachment (44, 64) for slidable movement along the length of the mounting arm (15) toward and away from a fixed axis. The cable link (16) includes an attachment for attaching a brake cable (78) thereto. A user may fix the cable link (16) at a select position along the length of the mounting arm (14) against slidable movement.

Abstract: With an object of providing a bicycle speed change operation assembly capable of providing an overshifting function only at a speed step requiring thereof as well as generating no unnecessary engaging sound, the following technical means are provided: The bicycle speed change operation assembly includes a retaining member (34) rotatable integrally with a speed change operation member (14), an engaging member (34) engagable with the retaining member for retaining the speed change operation member at a predetermined rotational position, and a regulating member (33b) juxtaposed to one of the retaining member and the engaging member with a predetermined play relative thereto while being engagable with the other of the retaining member and the engaging member for retaining the speed change operation member at a predetermined rotational position.

Abstract: A rotating brake actuator for a bicycle in which a rotation of a handle grip tensions a cable connected to a friction brake of the bicycle. The actuator includes a rotatable handle assembly which may be secured to a handlebar of the bicycle by an expandable end cap. A pulley is coupled to the handle assembly and eccentrically supports an end of the cable such that a rotation of the handle grip tensions the cable to apply the brake. The actuator includes a digit operated release assembly that prevents a rotation of the handle assembly to preclude an unintentional application of the brake.

Abstract: Improved cable guide for bicycle frames which has been found useful for improving the fatigue life of light weight bicycle frames and other stressed tubular structures. One or more welding or brazing-free dimple/bulkhead forming deformations produce strategically reduced stiffness zones so as to reduce peak stresses. The cable guide system also offers an improved method for routing control cables through the frame structure. A plastic cable nozzle insert is disclosed along with pyramid-shaped external dimples and contiguous bulkheads.

Abstract: A speed change operation assembly is provided which requires only a small mounting space and is unlikely to interfere with a brake lever assembly and the like even if mounted near a grip portion of a handlebar. The speed change operation assembly (1) comprises an annular lever mount (5) fixedly fitted on a handlebar (2), and a generally C-shaped lever member (6) elastically fitted on the lever mount for pivotal operation about an axis of the handlebar. The lever mount is integrally formed, on its outer circumference, with a sheath stopper portion (11) for attachment to an end of an outer sheath (w2) of a speed control cable (W) which additionally includes an inner wire (w]) inserted in the outer sheath. On the other hand, the lever member is integrally formed, on its outer circumference, with a wire stopper portion (14) for attachment to an end of the inner wire extending beyond the end of the outer sheath as well as with operating arm portions (15a, 5b) for engagement with the fingers of a rider.

Abstract: The following technical measure is taken to provide a bicycle speed change system or method wherein a speed change operation can be performed substantially without unhanding a handlebar and without erroneously shifting to a lower or higher speed.Specifically, the bicycle speed change system (1) comprises a front speed shifter (1a), a rear speed shifter (1b), and speed change operation assemblies respectively including cylindrical operation members (4a, 4b) rotatably supported around right and left grip portions (3a, 3b), respectively, of a handlebar (2); each of the shifters being operated by a control cable (T) which is pulled or released by rotating a corresponding one of the cylindrical operation members, wherein each of the cylindrical operation members (4a, 4b) is designed so that rotation thereof in a direction of moving its top surface rearward causes a corresponding one of the shifters (1a, 1b) to shift to a lower speed position.

Abstract: A self-adjusting actuation mechanism is disclosed for use in a cable actuated system, such as a bicycle caliper brake system. The actuation mechanism includes a housing and a lever pivotally attached to the housing. A cable assembly is provided for operating an actuated mechanism and the cable assembly includes a sheath and a cable slidably positioned within the sheath and attached to the lever wherein actuation of the lever causes the cable to move in a first direction. An abutment member is supported within the housing in engagement with an end of the sheath and the abutment member is mounted for movement relative to the housing in a second direction opposite to the first direction in response to actuation of the lever whereby the effective length of the sheath is increased.

Abstract: A control device attachable to the handlebar of a bicycle for controlling a brake mechanism and speed mechanism. The control device comprises a bracket fixed to the handlebar and a brake lever pivotable crosswise relative to the bracket. The brake mechanism is controlled by fore and aft pivotal movement of the brake lever, while the speed change mechanism is controlled by sideways pivotal movement of the brake lever.

Abstract: A multi-axial hand-operated helicopter control includes a pivotal arm which may freely pivot in two planes relative to a base member with collective and rudder control rods attached at the base of the pivoting arm member for translating motion along one plane into collective control and motion along another plane into rudder control. A rotatable throttle control mounts at an end of the arm member and a throttle shaft extends through the arm member attaching to a constant velocity joint for translating rotational movement of the throttle control into rotational movement of a base throttle rod. The pivotal arm member is mounted to a base member via a universal joint, with the constant velocity joint placed at the center of the universal joint, achieving high torque rotation.

Abstract: An actuating mechanism for a multispeed cycle hub comprises a housing adapted to be attached to an end of a hub shaft. A first cam, a second cam, and a pinion having engaging teeth are received in the housing for conjoint rotation. An elongated rack element is mounted for movement along an axis in the housing and is adapted to be coupled to a speed-selection device by a force-transmission member and includes a row of teeth in driving engagement with the engaging teeth of the pinion. A first pivot lever is pivotally mounted in the housing in constant contact with the first cam so as to follow a pivoting motion defined by the shape of the first cam and engages one of two speedchange elements, which are coupled to the transmission in the hub, so as to move the first speed change element upon pivotal movement in response to rotation of the first cam.

Abstract: A brake lever includes two separate sections which are connected to one another by an engaging screw to form an angle between two connected ends of the two sections.

Abstract: The following technical measure is taken to provide a bicycle speed change system or method wherein a speed change operation can be performed substantially without unhanding a handlebar and without erroneously shifting to a lower or higher speed.Specifically, the bicycle speed change system (1) comprises a front speed shifter (1a), a rear speed shifter (1b), and speed change operation assemblies respectively including cylindrical operation members (4a, 4b) rotatably supported around right and left grip portions (3a, 3b), respectively, of a handlebar (2); each of the shifters being operated by a control cable (T) which is pulled or released by rotating a corresponding one of the cylindrical operation members, wherein each of the cylindrical operation members (4a, 4b) is designed so that rotation thereof in a direction of moving its top surface rearward causes a corresponding one of the shifters (1a, 1b) to shift to a lower speed position.

Abstract: The two-staged brake handle includes two axle bushes, a brake handle and a positioning stand. Two bolts are screwed on the axle bushes, respectively. The positioning stand has an axle center hole wherein an arc gutter is provided around the rim for matching the protuberant rim of the two rotating axle bushes. The top rotating axle bush has a penetrating hole and a bolt hole, and the bottom rotating axle bush has a penetrating hole and a round hole in the corresponding positions. An arc hole and a round hole are provided in the front part of the brake handle. Two bolts are respectively inserted into the positioning stand to interlock into the penetrating holes and bolt hole of the top and bottom rotating axle bushes. A twisting spring is installed in the space between the bolt in the arc hole and the bottom axle bush. Two end hooks of the spring are fixed in the bottom of the positioning stand and against a nut.

Abstract: A handlebar mounted brake control mechanism for a Bowden brake cable or the like includes a handlebar having at least one end, a tubular handle member having first and second ends configured to telescopically slide over one end of the handlebar and being coaxially rotatable thereabout between a relaxed position and a braking position. A handle member biasing mechanism is located on the handlebar for biasing the handle member into the relaxed position, and a handle member guide is used to axially displace the handle member reciprocally between the relaxed position and the braking position. The handle member biasing mechanism is configured such that when the overriding force applied by the user to rotate the handle member into the braking position is released, the handle member biasing mechanism returns the handle member to the relaxed position from the braking position. Additionally, the handle member has an attachment for releasably accommodating an end of the brake cable.

Abstract: A shift lever apparatus for use in bicycles comprising first and second ratchet wheels and first and second switch levers, all of them being mounted on a main shaft. The first and second switch levers contain first and second ratchet pawls for engaging with the first and second ratchet wheels, respectively. The first and second ratchet wheels are connected to a cam via a gear set so as to cause the cam to rotate in forward and reverse directions, respectively. The outer periphery of the cam consists a plurality of spiral sectors, each of which having monotonically increasing radius, alternated with a plurality of circular sectors, each of which having constant radius.

Abstract: A bicycle speed control having a casing to hold a control mechanism being consisted of a sector ratchet wheel, a cable winch and a lever, an upper stop plate and a curved lower stop plate for controlling shifting of speeds of a bicycle, wherein moving the curved lower stop plate with the thumb toward the lever causes the bicycle controller to shift from a lower speed to a higher speed; moving the lever with the index finger toward the curved lower stop plate causes the bicycle controller to shift from a higher speed to a lower speed.

Abstract: A motorcycle throttle control for installation in a hand grip throttle control comprises a body designed to be threaded into a motorcycle throttle housing, a plunger within the body, and a cam lever mounted by the body for engaging the plunger to urge it into binding contact with a motorcycle throttle drum to hold a motorcycle throttle in a predetermined position.

Abstract: For the purpose of providing a bicycle speed change operation assembly capable of ensuring stable handlebar operation and immediate braking operation as well as remarkably improved riding safety during the speed change operation, the following technical means are provided: A bicycle speed change operation assembly according to the present invention comprises a cylindrical operation member (11) rotatably supported around a grip end portion of a handlebar (3), a speed change operation mechanism (12) provided in proximity of that grip end portion of the handlebar (3) and capable of winding and unwinding a speed control cable, and a transmission mechanism (13) provided between the cylindrical operation member (11) and the speed change operation mechanism (12) for driving this speed change operation mechanism (12) in response to the rotation of the cylindrical operation member (11), wherein the speed change operation mechanism (12) functions to wind or unwind the control cable in response to rotational reciprocati

Abstract: A hand lever for operating a motorcycle clutch or brake is pivotally mounted on one of the motorcycle handgrips and includes a head portion and a handle portion extending away from the head portion. The handle portion has an inner surface facing the handgrip and which is concave in transverse section and an outer surface facing away from the handgrip and which is convex in transverse section. The handle portion is also tapered from its proximal end to its distal end and is pivotal toward the handgrip so that the concave inner surface is moved into proximity with the curvilinear outer handgrip surface.

Abstract: A bicycle speed change lever assembly which includes a lever shift (9) extending downwardly from a mounting bracket (6a) which is attached adjacent an end grip portion of handlebar (1), and a lever pivotally supported on the lever shaft, the lever including a tubular body (7) rotatably fitted on the lever shaft (9), and a control arm (8) extending radially outward from the tubular body (7). The bracket (6a) has a forward extension (6b) so that the lever shaft (9) is arranged forwardly offset relative to an axis of the handlebar (1), and the lever shaft (9) is inclined to have a tip end deviating from a straight line which passes through a base end (9b) of the lever shaft (9) and is perpendicular to the forward extension (6b). This serves a number of purposes, namely to enable speed change operation while gripping the grip portion (2) of the handlebar (1), to enlarge the pivotal range of the control arm (8) to increase the number of speed stages, and to enable smooth pivotal operation of the control arm (8).

Abstract: A removable brake locking device for a hand-operated brake lever on a bicycle in its brake actuating position is provided and can be used with only one hand. The device is an nonextendible strap having a loop arranged and configured to be disposed around a handlebar to which the brake lever is attached. File strap has a linear free end extending from the loop which is then snugly pulled over the lever and attached to the loop to cause or to retain the brake lever in a closed or actuated configuration. The bicycle wheel couple to the corresponding brake is locked and the bicycle can be leaned against a vertical support without the likelihood of its turning and falling.

Abstract: A hand actuated link cable or piston displacement system utilizes a four-bar linkage system attached to a hand-operated lever. The four-bar linkage system is connected by bolts that permit pivotal movement and enable the hand-operated lever to move with little or no longitudinal travel relative to the longitudinal axis of displacement. Adjustments to the lever's angle of operation can be made, as well as adjustments to the power ratio of the system, for applying force.

Abstract: A braking device for a wheelchair having at least one wheel and a frame having siderails adjacent the wheel is provided with a brake assembly surrounding the wheel for clamping and braking the motion of the wheel and with a connecting and mounting assembly connected to the brake assembly which mounts the brake assembly onto the siderail forward of the wheel and positions the brake assembly forward of the wheel parallel to and aligned with the axis of rotation of the wheel. Also provided is a brake actuating member connected to the mounting assembly which actuates the brake member. Still further, a locking member is provided adjacent the brake actuating member for locking the actuating member in position when the brake member is clamped to the wheel. The invention also discloses a structure for braking and clamping two wheels of a wheelchair with one brake actuating member.

Abstract: A brake operating device for bicycles, comprises a brake lever rotatably installed through a pivot on a housing mounted on a handlebar, an operating wire interlockingly connected to the brake lever through a wire connector, and a force transmission ratio adjusting means for adjusting a transmission ratio by moving the wire connector toward and away from the pivot in accordance with the operation of the brake lever. In this device, the force transmission ratio adjusting means comprises a long hole provided in the brake lever and guiding the wire connector in relation to the pivot, and a link pivotally installed at one end to the wire connector installed in the long hole and also pivotally supported at the other end on the housing through the other pivot than the pivot stated above.

Abstract: An apparatus for imparting a movement to an actuation of an object, such as a brake, and comprising a bracket (2) with an operating device (4), preferably in the form of a handle (24), a stirrup, an arm or a lever which is disposed in connection with the object via a connecting device (5), the connecting device (5) including an element (6) which is rotatably disposed in the bracket (2) about a first pivot (9), a shaft or the like, and a coupling device (7) which is anchored with the said element (6) in a portion (8) a distance from the said first pivot (9), and that the operating device (4) is secured with the said element (6).

Abstract: A combined gear change control and brake unit for a bicycle comprises a first actuating lever adjacent the rear of the brake lever and a second actuating lever projecting horizontally towards the middle of the handlebar, which respectively control ratchet devices for controlling upward or downward selection of the various transmission ratios.