Abstract: According to one aspect, an electric toothbrush may include a handle, a brush head, a rechargeable battery, an electric motor, and a pair of electrical contacts. The handle may have a first end region and a second end region defining a longitudinal axis therebetween, the handle defining a volume from the first end region to the second end region. The brush head may include bristles, the brush head releasably securable to the first end region of the handle. The rechargeable battery may be in the volume. The electric motor may be at least partially disposed in the volume, the electric motor in electrical communication with the rechargeable battery, the electric motor in mechanical communication with the brush head. The pair of electrical contacts may be in electrical communication with the rechargeable battery, and the pair of electrical contacts axially and radially spaced from one another, relative to the longitudinal axis.

Abstract: Disclosed embodiments may relate to systems and methods for monitoring and/or mapping noise data from a plurality of noise monitoring devices. In some embodiments, the plurality of noise monitoring devices may include hearing protection devices configured to detect noise, and typically may communicate such noise data (which may also include location) so that the noise data can be pooled. The pooled noise data from the plurality of noise monitoring devices may then be used to the benefit of one or more of such noise monitoring devices.

Abstract: Disclosed embodiments may relate to systems and methods for monitoring and/or mapping noise data from a plurality of noise monitoring devices. In some embodiments, the plurality of noise monitoring devices may include hearing protection devices configured to detect noise, and typically may communicate such noise data (which may also include location) so that the noise data can be pooled. The pooled noise data from the plurality of noise monitoring devices may then be used to the benefit of one or more of such noise monitoring devices.

Abstract: Disclosed embodiments may relate to systems and methods for monitoring and/or mapping noise data from a plurality of noise monitoring devices. In some embodiments, the plurality of noise monitoring devices may include hearing protection devices configured to detect noise, and typically may communicate such noise data (which may also include location) so that the noise data can be pooled. The pooled noise data from the plurality of noise monitoring devices may then be used to the benefit of one or more of such noise monitoring devices.

Abstract: Disclosed embodiments may relate to systems and methods for monitoring and/or mapping noise data from a plurality of noise monitoring devices. In some embodiments, the plurality of noise monitoring devices may include hearing protection devices configured to detect noise, and typically may communicate such noise data (which may also include location) so that the noise data can be pooled. The pooled noise data from the plurality of noise monitoring devices may then be used to the benefit of one or more of such noise monitoring devices.

Abstract: Disclosed embodiments may relate to systems and methods for monitoring and/or mapping noise data from a plurality of noise monitoring devices. In some embodiments, the plurality of noise monitoring devices may include hearing protection devices configured to detect noise, and typically may communicate such noise data (which may also include location) so that the noise data can be pooled. The pooled noise data from the plurality of noise monitoring devices may then be used to the benefit of one or more of such noise monitoring devices.

Abstract: The present invention relates generally to systems and methods for controlling the display of a gas detector. A gas detector may comprise at least one gas sensor configured to detect at least one gas in the ambient environment; a display configured to display information received from the at least one gas sensor; an attachment configured to attach the gas detector to a user; an attachment sensor configured to detect when the gas detector has been attached to a user; and a processor configured to receive information from the attachment sensor, and configured to automatically control the orientation of at least a portion of the display based on the information received from the attachment sensor which indicates that the gas detector is worn by the user so as to improve the visibility of the display to the user.

Abstract: A hearing protection device configured to measure the noise exposure of a user and to provide a time remaining estimate until a maximum noise exposure level is achieved. Generally, the hearing protection device may comprise a sound sealing section, a microphone configured to generate a detected sound signal indicative of the measured sound level at the user's ear canal, a memory/storage configured to record the detected sound signal as sound exposure history, a timer configured to measure the amount of time the hearing protection device is exposed to sound, and a processor configured to receive a timer signal from the timer and the detected sound signal to calculate a time remaining estimate until reaching the maximum noise exposure level. Additionally, the maximum noise exposure level may be based on industry regulations or personalized hearing thresholds.

Abstract: A hearing protection device configured to measure the noise exposure of a user and to provide a time remaining estimate until a maximum noise exposure level is achieved. Generally, the hearing protection device may comprise a sound sealing section, a microphone configured to generate a detected sound signal indicative of the measured sound level at the user's ear canal, a memory/storage configured to record the detected sound signal as sound exposure history, a timer configured to measure the amount of time the hearing protection device is exposed to sound, and a processor configured to receive a timer signal from the timer and the detected sound signal to calculate a time remaining estimate until reaching the maximum noise exposure level. Additionally, the maximum noise exposure level may be based on industry regulations or personalized hearing thresholds.

Abstract: Disclosed embodiments may relate to systems and methods for monitoring and/or mapping noise data from a plurality of noise monitoring devices. In some embodiments, the plurality of noise monitoring devices may include hearing protection devices configured to detect noise, and typically may communicate such noise data (which may also include location) so that the noise data can be pooled. The pooled noise data from the plurality of noise monitoring devices may then be used to the benefit of one or more of such noise monitoring devices.

Abstract: A hearing protection earmuff may be configured to dampen vibrations at an interface. Generally, the hearing protection earmuff may comprise two ear cups, a headband attached to and connecting the ear cups, one or more sensors, a processor, an electroacoustic shock absorber, and an electromagnetic controller. Typically, the electromagnetic controller may be associated with an electroacoustic shock absorber and may be configured to control the dampening of the electroacoustic shock absorber. The dampening of the electroacoustic shock absorber may occur as a smart fluid changes viscosity in response to a signal received from the electromagnetic controller. In some embodiments, the clamping force between the headband and the ear cup may be varied by the electroacoustic shock absorber to minimize the vibrational impact on the user's ears. In some embodiments, the electroacoustic shock absorber may control the compressibility of the seal cushion located on each ear cup.

Abstract: A hearing protection device configured to measure the noise exposure of a user and to provide a time remaining estimate until a maximum noise exposure level is achieved. Generally, the hearing protection device may comprise a sound sealing section, a microphone configured to generate a detected sound signal indicative of the measured sound level at the user's ear canal, a memory/storage configured to record the detected sound signal as sound exposure history, a timer configured to measure the amount of time the hearing protection device is exposed to sound, and a processor configured to receive a timer signal from the timer and the detected sound signal to calculate a time remaining estimate until reaching the maximum noise exposure level. Additionally, the maximum noise exposure level may be based on industry regulations or personalized hearing thresholds.

Abstract: Embodiments relate generally to hearing protection devices comprising a battery compartment with a removable cover. Generally, the removable cover has two configurations: an unlocked configuration and a locked configuration. Typically, the removable cover may include a key and be configured to assist in one-handed removable by a gloved user (e.g. while the hearing protection device is being worn). So, for example, upon unlocking, the key might be configured to pop out automatically to allow the user to grasp the key and remove the removable cover.