Keizo Shimano has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
Abstract: A control lever device for a bicycle, which supports a control lever to a box-shaped bracket member, the bracket member being provided therein with a rising member extending toward the pivot portion for the lever, so that the lever is pivoted to the rising member, the rising member mounting thereon a grip dimension adjuster which contacts with the lever.
Abstract: A front derailleur for a bicycle has a base member provided with a horizontal mount and a pair of linkage members disposed longitudinally of the bicycle and extending horizontally, the linkage members being mounted on the mount swingably through first and second pivot shafts extending vertically, so that an air resistance against the linkage members is reduced during the bicycle's running, and a smooth speed can be obtained.
Abstract: A fishing rod comprising a first rod having a grip and tapering toward the fore end and a second rod having a tip and a connecting portion connected to the fore end of the first rod, the first rod having an ellipse-like cross sectional shape, the tip at the second rod having a round-like cross sectional shape, the connecting portion changing in cross section from an ellipse-like shape to a round-like shape. A third rod section with an elliptical cross section may be added between the first and second rod sections.
Abstract: A saddle support device for a bicycle, comprising a support member fixed to the upper portion of a seat post and a mechanism clamping a saddle frame and having a receiving member seated onto the support member and a holding member, said saddle frame being compressed between said receiving and holding members. The upper surface of the support member and the lower surface of the receiving member have spherical profiles, thereby making it possible to adjust the saddle not only in vertical angles longitudinally and laterally of the bicycle but also in rotation around the lengthwise axis of a locking member which draws the holding and receiving members together.
Abstract: A gear crank comprising a one-piece crank and a chain gear, said crank having a vertical chain gear receiving face formed at the axially outer surface thereof at the one axial end side thereof, so that the chain gear is detachably mounted on the receiving face.
Abstract: A rear derailleur for a bicycle, which comprises a derailleur body and a changeover frame having a guide pulley and a tension pulley, and guard plates for preventing a driving chain from escaping meshing with each pulley. The front edge of the guard plate corresponding to the tension pulley is positioned radially inwardly from the outer periphery of the tension pulley and close to the center thereof, and a pulley cap is interposed between the tension pulley and the guard plate.
Abstract: A derailleur for a bicycle, which is so constructed that a movable member is supported to a base member through two linkage members, a changeover frame having two pulleys carrying thereon a driving chain is pivoted to the movable member, and a tension spring is interposed between the movable member and the changeover frame, so that the tension spring exerts tension on the driving chain, said changeover frame being subjected to resistance against its swinging motion in a direction opposite to the working direction of the tension spring, thereby swinging the changeover frame easily in the direction of working of the changeover frame, while, requiring more force in the reverse direction to the working thereof, thereby making swinging of the changeover frame in the working direction of the tension spring easy and more difficult in the swinging motion direction opposite to the working direction of the spring.
Abstract: A covering apparatus for a handle bar of a bicycle, comprising a body formed of a synthetic resin foam and having a hollow into which the handle bar is insertable, the body being provided at one side thereof with an open groove through which the hollow is open to the body exterior, and a stopper provided within the groove for closing the open groove.
Abstract: A fixing band for fixing a cyclist's shoe onto a pedal of a bicycle, which comprises a band body and a buckle, a shoe binding portion at an intermediate portion of the band body displaced in a circular arc widthwise outwardly of the band body with respect to the straight line connecting a base carrying the buckle and an insertion end to be inserted into the buckle, so that the binding portion is allowed to contact throughout with the outer surface of the shoe's instep.
Abstract: A fixture for mounting a water bottle on a bicycle frame which is provided with a fixing member fixed to the frame and a support member, the fixing member being provided with a pair of skirts which contact with both lateral sides of the water bottle supported by the support member and with both lateral sides of the frame, to cover gaps produced between the water bottle and the frame.
Abstract: A transmission for multi-speed freewheels or a multi-speed gear system of a bicycle, which comprises two or more sprockets or the sprockets and a chain guard, formed by punching a metallic plate member; at the same time, a plurality of connectors are formed integrally with the sprockets and chain guard so that the sprockets or those and the chain guard may be regularly spaced with the connectors respectively in the relationship that the members are adjacent each other.
Abstract: A sealing construction for rotating joints of a bicycle, in which two or more first sealing members and second sealing members of ring-like shape are mounted alternately one after another on a stationary member and a rotary member and a gap therebetween is closed through an annular, zigzag and narrow passage, so that the narrow passage functions to provide a labyrinth effect, thereby preventing dust or rain water from entering a bearing.
Abstract: A drive and brake device for a bicycle, comprising a rear wheel hub having a plurality of driving gears, a coaster brake mechanism, and a derailleur having a chain-switching pulley. A guide pulley is provided at a fixing member carrying the derailleur, and guides a driving chain to the chain-switching pulley; a braking driving member rotatable integrally with the guide pulley when rotating reversely, is disposed coaxially with the guide pulley; and between the driving member and a braking driven member supported to a brake actuator at the coaster brake mechanism is interposed a transmitting mechanism for transmitting operation of the driving member to the driven member.
Abstract: A brake operating device for a bicycle, which comprises a bracket member fixed to a handle bar and a control lever pivoted to the bracket member through a lever shaft. The lever is pivoted to the bracket member at a pivot portion disposed on a straight line passing through the center of a distance between the brake applying position and the brake rest position of the grip portion of the lever.
Abstract: A derailleur for a bicycle, in which a supporting member is supported movably to a fixing member and a change-over frame is fixed swingably to the supporting member through a first horizontal shaft. The derailleur is characterized in that a second tubular shaft is sleeved onto the first shaft coaxially therewith, a first pulley is supported rotatably to the second shaft, a tubular chamber is formed between the outer periphery of the first shaft and the inner periphery of the second shaft, and a coiled tension spring is housed within the chamber, thereby reducing the overall lateral width of the derailleur.
Abstract: A sealing construction for rotating portions of a bicycle, in which a first and a second sealing member of ring-like shape are combined with a bearing cone of a bearing supporting a rotary member, the bearing cone extends axially outwardly to form an extension, and at the peripheral surface thereof and at the first and second sealing members opposite to the peripheral surface, are provided ridges and grooves engageable therewith at minimum intervals therebetween, so that the first and second sealing members are brought into close contact with each other by fixing means, thereby being fixed to the rotary member or a stationary member.
Abstract: A speed control device, which operates a control wire to actuate a derailleur and comprises a fixing member, a lever shaft, and a control lever, and a retaining mechanism for retaining the lever at one speed change position, the retaining mechanism between the fixing member and the control lever having releasing mechanism for releasing the retaining of the lever.
Abstract: A pedal for a bicycle, which supports a pedal body rotatably around the axis of a pedal shaft, the pedal body having a front foot-bearing surface and a rear foot-bearing surface, wich extend in parallel to the pedal body, and an outer connection connecting the front and rear foot-bearing surfaces at the lengthwise outer ends thereof, the foot and rear bearing surfaces each extending in parallel to the axis of the pedal shaft and being curved to have the center of curvature above the surface, so that the center of curvature of the rear foot-bearing surface is positioned axially outwardly of the pedal shaft with respect to the front foot-bearing surface.
Abstract: A gear crank for a bicycle, comprising a crank shaft, a pair of crank arms, and a chain gear has crank arm mounting portions at both axial ends of the crank shaft provided with supports having round outer peripheral surfaces and, axes offset with respect to the axis of rotation of the crank shaft respectively. The crank arms are removably mounted to the supports to allow for a changing of the angular position of the crank arms relative to the supports, whereby the angular positions are changed to adjust the length between the axis of rotation of the crank shaft and the utmost end of each crank arm.
Abstract: A four link member derailleur for a bicycle, which comprises a fixing member, two linkage members, and a movable member having a chain guide, and a return spring is provided with a control element having a plurality of engageable portions corresponding to the number of speed change stages and with a retainer engageable with each engageable portion at the control element to retain the movable member in a desired speed stage. The control element and retainer cooperate during shifting such that if a stroke of a control cable supported to the retainer is less than a given length, the retainer retains its engagement with each engageable portion, while if the stroke is greater than the given length, the retainer disengages from the engageable portion.