초록 ▼

Submersible personal stereo using a source, such as a radio, of stereo signals, a pair of sealed chambers housing a pair of electro-acoustic transducer and acoustic transmissive tubing for transmitting sound from the chambers to ear plugs, the tubing being non-wet by water and of a small inner diame

Submersible personal stereo using a source, such as a radio, of stereo signals, a pair of sealed chambers housing a pair of electro-acoustic transducer and acoustic transmissive tubing for transmitting sound from the chambers to ear plugs, the tubing being non-wet by water and of a small inner diameter to keep water from entering.

대표청구항 ▼

Portable waterproof stereo sound headphone system for use with a source of electronic signals having means for attachment to the user, comprising at least two transducers for converting electrical signals to sound signals, a transducer housing having a pair of separate sound chambers, said transduce

Portable waterproof stereo sound headphone system for use with a source of electronic signals having means for attachment to the user, comprising at least two transducers for converting electrical signals to sound signals, a transducer housing having a pair of separate sound chambers, said transducers being mounted in said chambers, waterproof electrical signal transmission means for connecting the transducers to said signal source, means for attaching the housing to the user, left and right air transmission lines for transmitting sound, each of said lines including a section of tubing connected at one end to respective one of said chambers and sealed in air tight relation to said housing so that said chambers and associated tubing represents an air tight volume containing a column of air extending end-to-end to said tubing, a pair of earplugs each having a hole therein and attached to the other end of the respective tubing section so that sound passes through said tubing section and earplug to the ear of the wearer, said tubing and earplugs having an inside diameter large enough to pass sound with fidelity, but small enough to impede entrance of water by a combination of capillary action in relation to the surface tension and contact angle of water, together with compression resistance of the sealed column of air contained within each of said sealed tubing and chamber volumes.