Voice transmitting apparatus for a breathing mask
AssigneeInstrument Systems Corporation
InventorEdwin Joscelyn
Life of this patent
Estimating the term…
Abstract
An apparatus for transmitting the wearer's voice is mounted inside a breathing mask and includes a microphone and a protective sheath substantially encasing the microphone. The protective sheath includes a thin, pliable wall which is kept in contact with the sensing diaphragm of the microphone so that, when the wearer speaks and sets the sheath wall into vibration, the vibration is directly communicated to the microphone diaphragm. In one illustrative embodiment, the sheath is formed as an integral, continuous pocket in the mask body which extends inside the mask and has an opening out of the mask.
Claims11
An apparatus, constructed to be mounted in a breathing mask adapted to be worn on the face of a human being for transmitting the wearer's voice outside said mask, said breathing mask having a hollow generally cup-shaped mask body adapted to cover at least the mouth and nose region of the wearer's face, comprising:
- a microphone adapted to be connected in communication with a point outside said mask, said microphone having a diaphragm constructed and arranged to be set into vibration to generate an electrical signal;
- and
- a protective sheath substantially encasing said microphone and including a thin, pliable wall in contact with said diaphragm, the wearer's voice being effective to set said wall into vibration so that said diaphragm is made to vibrate therewith, whereby an electrical signal representing the wearer's voice is generated by said microphone, said protective sheath being an integral pocket formed in said main body and extending into the interior of said mask, said pocket having an opening extending outside said main body.
In a breathing mask adapted to be worn on the face of a human being, said mask including a pliable, air impermeable, generally cup-shaped mask body coupled to a source of a breathing mixture and adapted to be placed on the face of the wearer to form an air seal therewith, an apparatus mounted inside said mask for transmitting the wearer's voice outside said mask, comprising:
- a microphone adapted to be connected in communication with a point outside said mask, said microphone having a sound sensing diaphragm and being constructed and arranged to generate an electrical signal representing sounds sensed by said diaphragm, and
- a microphone protecting sheath substantially encasing said microphone and including a thin, pliable wall in contact with said sensing diaphragm, said sheath wall being set into vibration when the mask wearer sounds his voice, said vibration being communicated to said sensing diaphragm so that an electrical signal representing the wearer's voice is produced by said microphone,
- said protective sheath being formed as an integral pocket in said mask body, said pocket extending into the interior of said mask and having an opening extending out of said mask body, said sheath being constructed to receive said microphone with a snug fit.
In a breathing mask adapted to be worn on the face of a human being, said mask including a pliable, air impermeable, generally cup-shaped mask body coupled to a source of a breathing mixture and adapted to be placed on the face of the wearer to form an air seal therewith, an apparatus mounted inside said mask for transmitting the wearer's voice outside said mask, comprising:
- a microphone positioned inside said mask and adapted for electrical connection with a point outside said mask, said microphone having a sound sensing diaphragm and being constructed and arranged to generate an electrical signal representing sounds sensed by said diaphragm,
- a microphone protecting sheath substantially encasing said microphone and including a thin, pliable integral wall in contact with said sensing diaphragm, said sheath wall being set into vibration when the mask wearer sounds his voice, said vibration being communicated to said sensing diaphragm so that an electrical signal representing the wearer's voice is produced by said microphone, and
- said microphone protecting sheath conforming to and abutting the outer periphery of said microphone except in the region of electrical connection thereto so that no air pockets are formed between said sheath and said microphone, said microphone periphery being substantially rigid except for said sensing diaphragm, and
- means providing said electrical connection from said body to a point outside said mask, said means protecting said electrical connection from the atmosphere inside said mask and not disturbing the air seal of said mask.
Dependencies are inferred from the claim text.