Abstract: Protective devices, such as, for example, helmets, have one or more efficient, fluid-containing shock absorbers in place of protective devices' original shock absorbing material to minimize the overall weight of the protective devices. The more efficient, fluid-containing shock absorbers yield improved impact force attenuation but occupy substantially less volume and, consequently, less weight, than the original shock absorbing material.

Abstract: A resonant sensor probe assembly includes a substrate formed from one or more dielectric materials and free-standing electrodes coupled with the substrate. The free-standing electrodes are configured to be placed into the fluid and to generate an electric field between the free-standing electrodes. A controller measures an impedance response of the sensor to the fluid between the electrodes to determine an aging effect of the sensor.

Abstract: A vehicle includes a storage trench having a bottom surface and side surfaces. The bottom surface is recessed relative to a floor of the vehicle, a first side surface extends upwards from the bottom surface to the floor on a first side of the trench, and a second side surface extends upwards from the bottom surface to the floor on a second side of the trench. The trench extends between a first seat and a second seat of the vehicle, unobstructed from an occupant compartment to a storage compartment. The trench allows access from outside of the vehicle, for example, from either a forward or rearward storage compartment. An inset may be included along the bottom surface. The insert can be removed, by sliding for example, for cleaning or to help access stored gear. The trench is longer than either storage compartment, capable of storing relatively long gear or equipment.

Abstract: Implementations of spool devices may include a frame including an anchor, the anchor configured to directly couple to a belt of a user, an axle coupled through the frame, and a first spool coupled over a first portion of the axle. The first portion of the axle may extend entirely through the first spool. The spool device may also include a second spool coupled over a second portion of the axle. The second portion of the axle may extend entirely through the second spool. The spool device may also include a first spool handle directly coupled to an outer wall of the first spool, a second spool handle directly coupled to an outer wall of the second spool, a first hose roller directly coupled to the frame, and a second hose roller directly coupled to the frame.

Abstract: Electric vehicles indicate charge levels in different ways. A lighting control module is communicatively is configured to illuminate an exterior light of an electric vehicle to indicate a charge status of a battery for the electric vehicle. The charge status is indicated based on varying an intensity of the exterior light, based on illuminating a subset of the exterior lights, and/or based on an animation. The display of the charge indicator varies based on a location of the vehicle, the presence of a person in proximity to the vehicle, and/or a charger connected to the vehicle.

Abstract: Electric vehicles indicate charge levels in different ways. A lighting control module is communicatively is configured to illuminate an exterior light of an electric vehicle to indicate a charge status of a battery for the electric vehicle. The charge status is indicated based on varying an intensity of the exterior light, based on illuminating a subset of the exterior lights, and/or based on an animation. The display of the charge indicator varies based on a location of the vehicle, the presence of a person in proximity to the vehicle, and/or a charger connected to the vehicle.

Abstract: Electric vehicles indicate charge levels in different ways. A lighting control module is communicatively is configured to illuminate an exterior light of an electric vehicle to indicate a charge status of a battery for the electric vehicle. The charge status is indicated based on varying an intensity of the exterior light, based on illuminating a subset of the exterior lights, and/or based on an animation. The display of the charge indicator varies based on a location of the vehicle, the presence of a person in proximity to the vehicle, and/or a charger connected to the vehicle.