Abstract: A bicycle retractable bicycle cross bar adaptor includes a bar having a first tube, a second tube and a control unit. The first tube has a first connection end and the second tube has a second connection end which is movably inserted into the first connection end. The second tube includes multiple holes. The control unit includes an inner part, a switch and a sleeve. A switch is pivotably connected to the inner part and the sleeve is mounted to the inner part and the switch. The sleeve includes a flexible tongue to pivot the switch. The switch includes a rod on one end thereof. When the switch is pivoted, the rod is inserted into one of the holes of the second tube to set the length of the bar. When the rod is removed from the hole, the second tube is moved relative to the first tube.

Abstract: At least one walking member is detachably connectable to an in-line skate to enable the wearer of the in-line skate to connect the walking member to the in-line skate, thus enabling the wearer to walk while wearing the in-line skate. Two walking members can be provided on alternative sides of the in-line skate wheels to provide a more stable platform for the wearer of the in-line skate. Since the two walking members are removable, the walking members do not detract from the aerodynamic and functional performance of the in-line skate, and can be manufactured together with the skate or, alternatively, can be added to the skate after purchase.

Abstract: A top tube assembly is detachably mounted between a seat tube and a head tube of a bicycle and comprises a tube, two hook-like attaching members, and two latch members. Each attaching member has an end securely attached to an associated end of the tube and mounted around an associated one of a seat tube and a head tube of a bicycle. Each latch member has an end pivotally connected to the associated end of the tube. Each latch member is pivotable along a horizontal plane between a locking position and an unlocking position.

Abstract: A device for disabling or otherwise allowing the wearer of an in-line skate to walk on the in-line skate without activating the wheels may include a clamping member to clamp the wheels. A switch may be activated which in turn activates or deactivates the clamping member. A walking member may also be provided, the walking member being coupled to the skate and moveable between first and second positions. In the first position the walking member may be secured such that the wearer may walk on the walking member. In the second position, the walking member is positioned such that it will not interfere when skating.

Abstract: A surrogate top tube for use in attaching bicycle without top tubes to vehicle-mounted carriers. The top tube includes yokes at each end for selective attachment to the seat tube and a vertical portion of the handlebars. The top tube may includes structure to prevent the yokes from rotating relative to each other about an axis extending therebetween. The yokes may also include a safety retainer to prevent the yoke from accidentally opening.