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| Number | Title | Issue Date |
| 6986348 | Cough-a-lizer The germ and noise filter device is a disposable, hand held filter apparatus that covers the mouth of the user during the exhale phase of a cough. The device comprises: a body with a cavity that houses three micro-filters; a corrugated tube; two one-way valves and a... | 01/17/2006 |
| 6401860 | Cough silencer device A cough silencer device comprising a body having a cavity therein with a mouth portion on a first end and an open second end. An internal muffling baffling system is placed within the cavity of the body and is fluidly connected to the mouth portion. An en... | 06/11/2002 |
| 6129173 | Personal removable mouthpiece for a voice amplification instrument and method of using same A personal removable mouthpiece can be slipped over the mouthpiece of a voice amplification instrument. An aperture in the removable mouthpiece allows a user to use the voice amplification instrument without the user's mouth coming into contact with the i... | 10/10/2000 |
| 5877460 | Device for talking underwater A device for talking underwater comprising a body made of a rigid material with a large opening and a small opening. The large opening has a thin diaphragm cover and the small opening has a mouth fitting for forming an airtight seal around a users mouth. ... | 03/02/1999 |
| 5827173 | Prenatal audio communication device A prenatal audio communication device has a receiving chamber which accepts sound waves for transmission through a flexible tube to a megaphone secured against the abdomen of a pregnant woman so as to transfer sound waves from an external source with whic... | 10/27/1998 |
| 5493079 | Vocal communication snorkel A vocal communication snorkel includes a hollow body having a breather tube, adapted to extend above the water, coupled thereto and a mouthpiece adapted to be held by the lips of a snorkeler. The body has a pair of inwardly curved, spherically shaped diap... | 02/20/1996 |
| 4932495 | Vocal sound muffling device A vocal sound muffling device having an elongated tubular body providing an elongated tubular cavity, a mouthpiece on one end of the body providing an inlet into the cavity for vocal sound waves and atomized fluids, a closure on the other end of the body ... | 06/12/1990 |
| 4834212 | Sound muffler for covering the mouth A human sound muffler and indicator for placement around the mouth of a user to absorb most of the sound emanating from the user's mouth including a microphone and associated electrical circuit for receiving unabsorbed sound and providing an indication of... | 05/30/1989 |
| 4792013 | Vocal muffler A vocal muffler for muffling the vocalization of a human, especially a crying baby. The muffler comprises a globe-like member having a chamber provided with a port positionable over the baby's mouth and via which the baby's crying enters the chamber to ex... | 12/20/1988 |
| 4768612 | Fetal communication device A device for allowing for spoken communication between a pregnant woman and her fetus. The device has a speaking tube component connected at one of its ends to a mouthpiece component and at its other end to a stomach-piece, megaphone-type component. The s... | 09/06/1988 |
| 4539983 | Respirator speech transmitter A respirator speech transmitter has a projecting tube with a one-way valve at one end and the other end being covered by a baffle having an inner skirt extending around the tube. An outer skirt extends from the tube to surround the inner skirt so that an ... | 09/10/1985 |
| 4537276 | Mask/microphone system for voice actuated control A device for transmitting sound from a speaker in a first area, such as a sterile or clean field, to a second area such as a nonsterile or nonclean field. The device includes a sound conduit having an inlet and an outlet and being of sufficient length to ... | 08/27/1985 |
| 4527657 | Tapered tube impedance matching underwater voice communicator with bubble silencer An underwater voice communicator in which the preferred embodiment comprises a pair of tapered tubes in communication with a diver's mouth. The tubes are constructed of a material having a sound impedance similar to the sound impedance of water. Sound ene... | 07/09/1985 |
| 4473130 | Crash helmet with communication system A crash helmet for use by motorcycle drivers or riders has a rigid shell; a first flexible acoustic tube a first section of which extends into and has a bell horn in the region of the mouth-protecting part of the shell, and a second section extending from... | 09/25/1984 |
| 4423293 | Microphone holding device A microphone holding device which holds a microphone in a casing so that the microphone is disposed substantially perpendicularly to the surface of a concave of a helmet, etc. for receiving the microphone in it. Thus, both the sound collecting portion and... | 12/27/1983 |
