Abstract: Systems and methods are provided that provide respiration entrainment cues to a user to encourage relaxation or a sleep state. The entrainment cues may be audible, visible, or tactile (or any combination). The entrainment cues include a rhythmic component associated with a target respiration rate and may include sub-components associated with a target breath architecture, such as an inhale-exhale cycle. The systems and methods detect the user's respiration to determine whether the user's respiration matches the entrainment cues or whether the user has fallen asleep.

Abstract: Systems and methods are provided that provide respiration entrainment cues to a user to encourage relaxation or a sleep state. The entrainment cues may be audible, visible, or tactile (or any combination). The entrainment cues include a rhythmic component associated with a target respiration rate and may include sub-components associated with a target breath architecture, such as an inhale-exhale cycle. The systems and methods detect the user's respiration to determine whether the user's respiration matches the entrainment cues or whether the user has fallen asleep.

Abstract: The present disclosure provides systems and methods for the dispensing and collection of objects in urban environments. More particularly, the disclosure provides systems and methods for dispensing and collecting helmets. The disclosure provides a self-sufficient, high-capacity, helmet dispensing system. In some embodiments, the system includes solar panels that provide the system with the requisite power needed to power the system. In some implementations, the system includes a vandal resistant return mechanism for the helmets. The system may also include communication modules, which may transmit system information to a backend server.

Abstract: The present disclosure provides systems and methods for the dispensing and collection of objects in urban environments. More particularly, the disclosure provides systems and methods for dispensing and collecting helmets. The disclosure provides a self-sufficient, high-capacity, helmet dispensing system. In some embodiments, the system includes solar panels that provide the system with the requisite power needed to power the system. In some implementations, the system includes a vandal resistant return mechanism for the helmets. The system may also include communication modules, which may transmit system information to a backend server.

Abstract: The present disclosure provides systems and methods for the dispensing and collection of objects in urban environments. More particularly, the disclosure provides systems and methods for dispensing and collecting helmets. The disclosure provides a self-sufficient, high-capacity, helmet dispensing system. In some embodiments, the system includes solar panels that provide the system with the requisite power needed to power the system. In some implementations, the system includes a vandal resistant return mechanism for the helmets. The system may also include communication modules, which may transmit system information to a backend server.

Abstract: A manually powered wheelchair includes a first lever associated with a first rear wheel and demountably coupled to a first drivetrain, the first lever having a first brake thereon. The wheelchair also includes a second lever associated with a second rear wheel and demountably coupled to a second drivetrain, the second lever having a second brake thereon. Each drivetrain includes a chainring, a chain, and a freewheel, and each drivetrain has a fixed gear ratio. The freewheel of each drivetrain is actuated by manual pivoting of the lever associated therewith. In use, the wheelchair achieves changes in mechanical advantage when a user shifts the user's hands up and down the first and second levers.

Abstract: A manually powered wheelchair includes a first lever associated with a first rear wheel and demountably coupled to a first drivetrain, the first lever having a first brake thereon. The wheelchair also includes a second lever associated with a second rear wheel and demountably coupled to a second drivetrain, the second lever having a second brake thereon. Each drivetrain includes a chainring, a chain, and a freewheel, and each drivetrain has a fixed gear ratio. The freewheel of each drivetrain is actuated by manual pivoting of the lever associated therewith. In use, the wheelchair achieves changes in mechanical advantage when a user shifts the user's hands up and down the first and second levers.

Abstract: A manually powered wheelchair includes a first lever associated with a first rear wheel and demountably coupled to a first drivetrain, the first lever having a first brake thereon. The wheelchair also includes a second lever associated with a second rear wheel and demountably coupled to a second drivetrain, the second lever having a second brake thereon. Each drivetrain includes a chainring, a chain, and a freewheel, and each drivetrain has a fixed gear ratio. The freewheel of each drivetrain is actuated by manual pivoting of the lever associated therewith. In use, the wheelchair achieves changes in mechanical advantage when a user shifts the user's hands up and down the first and second levers.