Incentive spirometer with automatic levelling

Details Incentive spirometer with automatic levelling Incentive spirometer with automatic levelling

1981-11-23

1984-01-17

Cohen, Lee S.

Textiles: manufacturing

Warp preparing or handling

Machine replenishing

272 99, A61B 508

Patent

active

044259239

ABSTRACT:
An incentive spirometer, of the type wherein an object is raised in a tube by a patient inhaling through the tube, is improved by automatically maintaining the tube vertically-oriented in spite of tilting of the frame from which the tube is supported.

REFERENCES:
patent: 4025070 (1977-05-01), McGill et al.
patent: 4060074 (1977-11-01), Russo
patent: 4086918 (1978-05-01), Russo
patent: 4114607 (1978-09-01), Russo
patent: 4138105 (1979-02-01), Hunger et al.
patent: 4170228 (1979-10-01), Elson et al.
patent: 4182347 (1980-01-01), Russo
patent: 4183361 (1980-01-01), Russo

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