Abstract: A door closer system to control motion of a door includes a shear thickening fluid (STF), a chamber for the STF, and a piston within the chamber. The door closer system further includes a plunger coupled to the piston and to a spring with a motion conversion aspect to mechanically join motion of the door with movement of the piston and to provide compression of the spring based on an opening motion of the door. The motion conversion aspect is further configured to cause the spring to hold stored energy as a result of the opening motion of the door, the spring to release the stored energy to facilitate a closing motion of the door, and regulating a velocity of the closing motion of the door as a result of the piston causing an increasing viscosity of the STF to provide a soft close feature.

Abstract: A head unit system for controlling motion of an object includes a head unit module of a set of head unit devices and a ramp shaped plate that contacts the head unit module using an engagement approach. Head unit devices of the head unit module include shear thickening fluid (STF) and a chamber configured to contain the STF. A piston moves through the chamber as a result of the motion of the object and the STF resists the movement of the piston to control the motion of the object.

Abstract: Described herein are systems and apparatuses for securing and locking a battery or battery enclosure to a vehicle. In general, a vehicle may include a planar body mounted to any number of wheels, tracks, wings or flotation devices. In a preferred embodiment, the security device comprises a security plate and a locking pin system is used to secure the battery to any vehicle. The security plate is positioned between the fastener heads and the battery enclosure and has an opening for the locking pin to slide through. Once the pin is inserted into security plate the pin lock secures the pin in place and prevents removal of the battery or battery enclosure from the vehicle.

Abstract: Described herein are systems and apparatuses for securing and locking a ride-able board to a fixed object. In general, a ride-able board may optionally include a planar body configured for moving across a solid surface and for carrying a rider. In general, a ride-able board may include a planar body mounted to a steering apparatus and any number of wheels. In a preferred embodiment, the security device containing a shackle and housing comprising an open cavity is used to secure the board to any fixed object. In a preferred embodiment, the housing cavity slides over the steering apparatus and has two openings for each end of the shackle. The lock secures the shackle in place and prevents the removal of the board from the fixed object. The housing working in conjunction with the u-shackle prevents removal of the locking device from the board.

Abstract: Described herein are systems and apparatuses for securing and locking a battery or battery enclosure to a vehicle. In general, a vehicle may include a planar body mounted to any number of wheels, tracks, wings or flotation devices. In a preferred embodiment, the security device comprises a security plate and a locking pin system is used to secure the battery to any vehicle. The security plate is positioned between the fastener heads and the battery enclosure and has an opening for the locking pin to slide through. Once the pin is inserted into security plate the pin lock secures the pin in place and prevents removal of the battery or battery enclosure from the vehicle.

Abstract: Described herein are systems and apparatuses for securing and locking a ride-able board to a fixed object. In general, a ride-able board may optionally include a planar body configured for moving across a solid surface and for carrying a rider. In general, a ride-able board may include a planar body mounted to a steering apparatus and any number of wheels. In a preferred embodiment, the security device containing a shackle and housing comprising an open cavity is used to secure the board to any fixed object. In a preferred embodiment, the housing cavity slides over the steering apparatus and has two openings for each end of the shackle. The lock secures the shackle in place and prevents the removal of the board from the fixed object. The housing working in conjunction with the u-shackle prevents removal of the locking device from the board.