An axle assembly for a vehicle includes an axle shaft having a bolt end and a lever end. The axle assembly includes a cam assembly coupled to the lever end of the axle shaft. The cam assembly includes a cam housing, a cam follower shaft coupled to the cam housing, and the cam follower shaft is located coaxially within the axle shaft. The cam follower shaft does not extend the full length of the axle shaft. The cam shaft is coupled to the cam follower shaft, and a lever is coupled to the cam assembly. The lever is rotatable from an open position to a closed position, and an angle of maximum rotation for the lever between the open position and the closed position is less than 180 degrees.

A quick-release axle system includes two bicycle elements, particular two chain stays. They are connected to each other by means of a quick-release axle. Two clamping elements are provided for the connection, so that a non-positive connection is realized between the two bicycle elements and the quick-release axle.

A collapsible bicycle includes a collapsible tube, a spring-loaded detent, a rod, a hook, and a security element. The collapsible tube includes a first section, a second section, and a hinge for pivotally connecting the first and second sections to each other. The spring-loaded detent is connected to the second section of the collapsible tube and formed with an external end. The rod is connected to the second section of the collapsible tube. The hook is pivotally connected to the first section and formed with a hook engageable with the rod to keep the first and second sections of the collapsible tube coaxial with each other. The security element is pivotally connected to the first section of the collapsible tube and formed with a concave portion for receiving the spring-loaded detent to keep the security element covering the hook, thereby keeping the hook engaged with the rod.

A battery-centric virtual grid system may include battery modules, each including: one or more battery cells, one or more processors that obtain performance information from the one or more battery cells, the one or more processors configured to identify a respective device being powered by the respective modules from the plurality based on the respective performance information and to determine characteristics of the respective device being powered by the respective module from the plurality based on the performance information or configured to receive data from the respective device powered by the module from the plurality, the one or more transceivers configured to remotely receive and transmit data, thus the respective device becoming part of an IOT network via the respective module, and an enclosure at least partially enclosing the one or more battery cells, the one or more module processors, and the one or more transceivers.

A home battery backup system may include a plurality of battery modules. Each battery module from the plurality may include one or more battery cells, a power output operably connected to the one or more battery cells, one or more module processors operably connected to the one or more battery cells or the power output, and an enclosure at least partially enclosing the one or more battery cells, the one or more module processors. The power outputs of each of the battery modules in the plurality may be connected to a common bus. A first battery module from the plurality may be settable to a first output power profile and a second battery module from the plurality may be simultaneously settable to a second output power profile different from the first output power profile.

A swappable drive train assembly for a vehicle includes a rod removably attachable to a coupling arrangement of the vehicle that defines a first aperture and connects a first vehicle frame component and a second vehicle frame component. The swappable drive train assembly further includes an assembled gear cartridge attachable to the vehicle by the rod. The assembled gear cartridge is configured to rotate about the rod with respect to the coupling arrangement. The assembled gear cartridge is attachable to the vehicle by extending the rod through the first aperture and a second aperture of the assembled gear cartridge which maintains the connection between the first vehicle frame component and the second vehicle frame component while attaching and detaching the assembled gear cartridge.

A battery module may include a rectangular tower comprised of four longitudinal faces, a top face, and a bottom face; one or more battery cells disposed inside the rectangular tower; chamfered edges disposed around a perimeter of the bottom face, the chamfered edges reducing a perimeter of the bottom face as the chamfered edges extend downwards towards at an extreme end of the bottom face; and a battery module connector disposed adjacent the extreme end of the bottom face recessed from the extreme end of the bottom face and at least partially shrouded by the chamfered edges, the battery module connector including or having formed thereon one or more alignment pins or one or more alignment pins receivers and one or more electrical contacts.

The present invention relates to a sound emitting device. The sound emitting device includes a housing, a memory device. The housing includes a slot. The memory device carries a first number of a sound groups. In addition, each group contains a second number of sounds. The housing is configured to removably receive the memory device. The housing carries a plurality of actuators. In addition, number of actuators are more than the first number. Each sound group is selected using one of the plurality of actuators. At least one actuator is used to toggle between sounds of the selected group.

In an embodiment a bicycle wheel suspension includes a wheel axle having on its both axial ends a respective internal thread, a bicycle frame section of the bicycle, wherein the bicycle frame section comprises a first frame end and a second frame end, a respective bush for each one of the frame ends, wherein the respective bush is arranged concentrically with a through hole and form-fittedly in the through hole and a respective screw for each one of the frame ends, wherein the respective screw is arranged concentrically with the bush and extends form-fittedly through the bush and via the axial end to an inside of the wheel axle, and wherein a screw thread of the screw is in engagement with the internal thread.

A clamping mechanism for mounting and demounting bicycle components of at least partially muscle-powered two-wheeled vehicles such as bicycles, including at least one operating lever and a clamping component. The clamping mechanism includes two clamping parts, one of which clamping parts is a clamping sleeve and connected with the operating lever, and another of which clamping parts is formed at the clamping component. The operating lever can be moved from an engagement position; in which it is non-rotatably connected with the clamping component to a rotary position in which it is freely rotatable relative to the clamping component. In the rotary position, the operating lever is disposed closer to the clamping component than in the engagement position.