US3718156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic air flow smoothing apparatus
Assignee: Individual
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Filing: 1971-01-27
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Granted: 1973-02-27
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Expires: 1991-01-27
Abstract
Abstract The present invention relates in general to an automatic air flow smoothing apparatus assuring a constant output air flow and more particularly to an automatic air flow smoothing apparatus, assuring a constant output air flow achieved by a suitable builtin automatic flow regulating means, despite an eventual change in the pressure of the input air flow.
Inventors
- 👤 A Fujii
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:35
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/22; F16K1/223; F16K17/00; F16K17/02; F16K17/04; F16K17/0446; F24; F24F; F24F11/00; F24F11/70; F24F11/72; F24F11/74; F24F11/75; Y; Y10; Y10S; Y10S251/00; Y10S251/901; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7839; Y10T137/7869
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
94 words
An automatic air flow smoothing apparatus comprising a hollow enlongated open-ended casing, a rod mounted in the upper end of said casing and depending therealong, a primary coiled spring means mounted on said rod, a pair of secondary coiled springs having the upper ends attached to said primary coiled spring means, and a pair of flap disc halves hinged together within the lower end of said casing, the lower ends of said secondary coiled springs diverging from said primary coiled spring means and having the lower ends attached to the respective flap disc halves.
Claim 2
Dependent Claim
94 words
An automatic air flow smoothing apparatus comprising a hollow enlongated open-ended casing, a rod mounted in the upper end of said casing and depending therealong, a primary coiled spring means mounted on said rod, a pair of secondary coiled springs having the upper ends attached to said primary coiled spring means, and a pair of flap disc halves hinged together within the lower end of said casing, the lower ends of said secondary coiled springs diverging from said primary coiled spring means and having the lower ends attached to the respective flap disc halves.
Claim 3
Dependent Claim
117 words
An automatic air flow smoothing apparatus comprising a cylindrical casing, a diametral member fixed inside the upper end of said cylindrical casing, a vertical adjusting rod adjustably mounted on said diametral member for movement along said casing, a primary coiled spring means mounted around said rod and secured thereto, two secondary coiled springs having the upper ends attached to said primary coiled spring means, and a pair of flap disc halves perforated at least over part of the area thereof and hinged together within the lower end of said casing, the lower ends of said secondary coiled springs diverging from said primary coiled spring means and having the lower ends attached to the respective flap disc halves.
Claim 4
Dependent Claim
117 words
An automatic air flow smoothing apparatus comprising a cylindrical casing, a diametral member fixed inside the upper end of said cylindrical casing, a vertical adjusting rod adjustably mounted on said diametral member for movement along said casing, a primary coiled spring means mounted around said rod and secured thereto, two secondary coiled springs having the upper ends attached to said primary coiled spring means, and a pair of flap disc halves perforated at least over part of the area thereof and hinged together within the lower end of said casing, the lower ends of said secondary coiled springs diverging from said primary coiled spring means and having the lower ends attached to the respective flap disc halves.
Claim 5
Dependent Claim
74 words
An automatic air flow smoothing apparatus as claimed in claim 2 in which said primary coiled spring means comprises a top seat secured to said adjusting rod, a primary coiled spring having the upper end attached to said top seat, a link at the bottom of said primary coiled spring to which the bottom of said primary coiled spring is attached, the upper ends of said secondary coiled springs being attached to said link.
Claim 6
Dependent Claim
90 words
An automatic air flow smoothing apparatus as claimed in claim 2 in which said primary coiled spring means comprises a top seat secured to said adjusting rod, a primary coiled spring having the upper end attached to said top seat, a vertical tube around said rod and within which said primary coiled spring is positioned, the bottom of said primary coiled spring being attached to the bottom of said vertical tube, and the upper ends of said secondary coiled springs being attached to the upper end of said vertical tube.
Claim 7
Dependent Claim
96 words
An automAtic air flow smoothing apparatus as claimed in claim 2 in which said primary coiled spring means comprises a vertical tube positioned around and secured to said adjusting rod, a primary coiled spring around said vertical tube and attached to the bottom of said tube, a flange slidably positioned around said tube and having the upper end of said primary coiled spring engaged therewith, the primary coiled spring being compressed between the bottom of said vertical tube and said flange, and the upper ends of said secondary coiled springs being attached to the slidable flange.
Claim 8
Dependent Claim
41 words
An automatic air flow smoothing apparatus as claimed in claim 2 in which said diametral member has a nut secured thereto, and said adjusting rod is a threaded rod threaded through said nut for adjustment along the length of said casing.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-27 | 1976-08-28 | 1977-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-27 | 1980-08-28 | 1981-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-27 | 1984-08-28 | 1985-02-27 | $7700.00 | Window Closed / Lapsed |