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US4007238A Expired / Lapsed US ⏱️ 0.0 years remaining

Nebulizer for use with IPPB equipment

Assignee: Individual
•
Filing: 1976-02-25
•
Granted: 1977-02-08
•
Expires: 1996-02-25
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Abstract

Abstract A nebulizer for use with IPPB equipment comprising a cylindrical housing closed at top and bottom, with an air inlet through the side wall of the housing, and an outlet through the side wall near the top of the housing. The outlet carries a mouthpiece. The bottom portion of the housing comprises a reservoir for liquid medication. There is an axial cylindrical chimney positioned inside the housing, with a skirt which hangs below the position of the inlet so that incoming air from the IPPB flows downward around the chimney, up inside of the chimney, out of the top of the chimney, and sideways into the outlet pipe. Positive pressure air is provided to a vertical nozzle positioned in the bottom of the housing creating a high velocity stream of air which flows over the end of a capillary tube, which dips into the medication in the base portion. The high velocity air jet causes the liquid medication to be inducted through the capillary and to be picked up by the flowing air as droplets of liquid to impinge on a horizontal cylindrical target positioned immediately above the nozzle, so that the liquid droplets are broken into many fine droplets, which are then picked up by the air flow, and carried upward through the chimney and to the outlet pipes.

Inventors

  • 👤 Joseph G. Glenn

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 15:37
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/0012; A; A61; A61M; A61M11/00; A61M11/06; Y; Y10; Y10S; Y10S261/00; Y10S261/65

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 258 words
A nebulizer for use with IPPB appartus comprising: a. a cylindrical housing with axis vertical, an air inlet tube extending horizontally through the wall of said housing; b. top closure means closing the top end of said housing, an outlet tube passing through the wall of said top closure means; c. a bottom cup removably attached to said housing for closing the bottom end of said housing, and storing a supply of liquid medication; a post in the base of said cup, an opening through said post, and an orifice closing the top end of said opening; d. means to supply air under pressure to said nozzle to create a vertical jet of air; e. capillary tube means attached to said post, the bottom end immersed in liquid medication in said cup, the top end fixed in position in said air jet, whereby the flow of air will cause liquid to be drawn up inside said capillary and to form droplets at the top end, which are picked up by said air jet; f. horizontal cylindrical target means mounted above said air jet, whereby said jet and liquid droplets will impinge on said target and said droplets will be broken into micron size droplets; g. an axial cylindrical chimney inside said housing having a skirt extending below said inlet tube, the top end of said chimney extending almost to the top closure, the annulus between said chimney and said housing closed by a mounting flange, a plurality of openings through the wall of said chimney above said flange.
Claim 2
Dependent Claim 258 words
A nebulizer for use with IPPB appartus comprising: a. a cylindrical housing with axis vertical, an air inlet tube extending horizontally through the wall of said housing; b. top closure means closing the top end of said housing, an outlet tube passing through the wall of said top closure means; c. a bottom cup removably attached to said housing for closing the bottom end of said housing, and storing a supply of liquid medication; a post in the base of said cup, an opening through said post, and an orifice closing the top end of said opening; d. means to supply air under pressure to said nozzle to create a vertical jet of air; e. capillary tube means attached to said post, the bottom end immersed in liquid medication in said cup, the top end fixed in position in said air jet, whereby the flow of air will cause liquid to be drawn up inside said capillary and to form droplets at the top end, which are picked up by said air jet; f. horizontal cylindrical target means mounted above said air jet, whereby said jet and liquid droplets will impinge on said target and said droplets will be broken into micron size droplets; g. an axial cylindrical chimney inside said housing having a skirt extending below said inlet tube, the top end of said chimney extending almost to the top closure, the annulus between said chimney and said housing closed by a mounting flange, a plurality of openings through the wall of said chimney above said flange.
Claim 3
Dependent Claim 15 words
The nebulizer as in claim 1 in which said target is supported in said skirt.
Claim 4
Dependent Claim 20 words
The nebulizer as in claim 1 in which said outlet tube extends inside of the wall of said top closure.
Claim 5
Dependent Claim 19 words
The nebulizer as in claim 1 in which said nozzle and said post are axially positioned in said cup.

References Cited (Backward Citations)

US2421359A Cited
US2605764A Cited
US2869188A Cited
GB704070A Cited
US3018971A Cited
US3097645A Cited
GB958867A Cited
US3172406A Cited
US3864326A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-02-08 1980-08-09 1981-02-08 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-02-08 1984-08-09 1985-02-08 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-02-08 1988-08-09 1989-02-08 $7700.00 Window Closed / Lapsed

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