SPERIAN HEARING PROTECTION, LLC Patent applications |
Patent application number | Title | Published |
20120243700 | EARMUFF ENCLOSURE - Embodiments relate to earmuffs with speakers, and attempt to improve speaker acoustic quality without negatively impacting sound attenuation of the earmuffs. Embodiments may comprise a speaker plate located behind a speaker unit, and typically the speaker plate comprises a recessed portion with a plurality of holes. When the speaker plate is in place behind the speaker unit, it may cause the speaker to be more accurate across a broad range of frequencies without negatively impacting sound attenuation. | 09-27-2012 |
20110058680 | Methods and Apparatus for Continuous Noise Exposure Monitoring - A method for continuously monitoring noise exposure level of a person via measuring sound level within an ear canal of the person using a sound measurement means linked to a sound level recording device external to the ear canal, wherein the sound measurement means may be shielded from the environment by a hearing protective device, and wherein the cable does not interfere with the ability of the hearing protective device to reduce noise exposure level in the ear canal. Also provided is a system comprising a sound measurement means mounted within an ear canal of the person, an external sound level recording means and a linking cable. Further provided is a system for providing continuous noise exposure monitoring level of a person, and for providing radio communication in a noisy environment, said system comprising the above sound monitoring system linked to a radio signal transmission means, and is switchable between said sound level recording means in a recording mode and said radio signal transmission means in a communication mode. | 03-10-2011 |
20100307861 | NON-ROLL FOAM EARTIP - Embodiments disclose a non-roll foam EarTip that may provide for fingertip press-in insertion, improved comfort, simplicity of use, flatter attenuation and/or improved hygienic properties, by way of non-exclusive example. A hollow foam body typically encompasses a shorter stem of more rigid material, and in some embodiments the foam body has a tighter skin on the inner and outer surfaces. In some embodiment, the EarTip is an earplug formed of polyurethane foam with a dense skin on the inner and outer surfaces of the hollow body, and having a plurality of splines in the cavity. | 12-09-2010 |
20100300461 | EARTIP - An improved EarTip may result from the distribution of PTFE throughout a slow recovery foam. Such an EarTip may have a finer, more uniform cell structure that aids in insertion within a user's ear canal. It may also have a smoother skin, with a lower kinetic coefficient of friction, and may provide improved sound attenuation. | 12-02-2010 |
20090314298 | HEADPIECE FOR USE IN ASSOCIATION WITH A HEARING CAP - A headpiece is provided for use in association with at least one hearing cap. The headpiece comprising a first portion, adapted to, when a user wears a hearing cap, be positioned between a sealing ring of the hearing cap and a portion of the user's head circumscribing an ear, and a second portion essentially circumscribed by the first portion, the first portion comprising a relatively air tight material forming a sealing ring in the headpiece, and the second portion being formed of one or more relatively air permeable materials allowing air to move between the ear and an inner volume of the hearing cap when the user wears the hearing cap. | 12-24-2009 |