Chemistry: analytical and immunological testing – Oxygen containing – Hydroxyl containing
Patent
1983-09-30
1986-04-01
Richman, Barry S.
Chemistry: analytical and immunological testing
Oxygen containing
Hydroxyl containing
128719, 128730, 446202, 422 85, 436900, G01N 122, G01N 2178
Patent
active
045798265
ABSTRACT:
A device, useful for breath analysis and as an amusement device, comprising a flexible tube which can be extended from a shortened condition to an extended condition, one end of the tube being secured to a mouthpiece unit including both an input opening, through which breath can be exhaled into the tube, and an exhaust opening; spring means for urging the tube to its shortened condition; an escape opening at the end of the tube opposite the mouthpiece unit; and pressure regulating means for opening the escape opening when the tube has been inflated by breath exhaled through the input opening. Advantageously, the tube is a collapsible, non-self-supporting polymeric tube and the spring means is effective to roll the tube upon itself in spiral fashion toward the mouthpiece unit.
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Bolton Craig E.
Roylance Stephen M.
Gzybowski Michael S.
Richman Barry S.
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