Patent US1930276A successfully refreshed from Google Patents.
US3757664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cloth ventilator
Assignee: Individual
•
Filing: 1972-06-20
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Granted: 1973-09-11
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Expires: 1992-06-20
Abstract
Abstract A cloth ventilator having an upper half formed of an X crosssection and a lower half formed as a diffuser of square crosssection, said part of X cross-section extending into said part of square cross-section. The bottom of said cloth ventilator having means for holding it open and fixing it within a hatchway and the top of said ventilator having means for supporting said X crosssection so that a wind can blow into said ventilator from any direction and be directed downwardly into said bottom section. Said ventilator has a top which is spaced from the top of said X cross-sectional portion so that a gust of wind can pass therebetween and not place too great a strain on the material, the top having a support rope connected to a support on a mast above the deck of a boat.
Inventors
- 👤 D Jalbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:32
CPC Classifications
F; F24; F24F; F24F7/00; F24F7/02; B; B63; B63J; B63J2/00; B63J2/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
150 words
A ventilator for receiving a wind and directing it downwardly therefrom, said ventilator having its upper part formed of X cross-section for its entire length, a lower part formed of square cross-section, said upper and lower parts being formed of flexible material, the lower section of the upper part formed of X cross-section extending into the upper section of said square cross-section part, the bottom section of said lower part having means for holding it open and fixing it within an opening, the top of said upper part having means for supporting the upper section of the upper part of said X cross-section while the remainder hangs loosely therefrom, a top fixed to the upper portion of said upper part, said top being spaced from said upper part so that the portion of a wind which is excessive can pass therethrough without placing too great a strain on the ventilator.
Claim 2
Dependent Claim
150 words
A ventilator for receiving a wind and directing it downwardly therefrom, said ventilator having its upper part formed of X cross-section for its entire length, a lower part formed of square cross-section, said upper and lower parts being formed of flexible material, the lower section of the upper part formed of X cross-section extending into the upper section of said square cross-section part, the bottom section of said lower part having means for holding it open and fixing it within an opening, the top of said upper part having means for supporting the upper section of the upper part of said X cross-section while the remainder hangs loosely therefrom, a top fixed to the upper portion of said upper part, said top being spaced from said upper part so that the portion of a wind which is excessive can pass therethrough without placing too great a strain on the ventilator.
Claim 3
Dependent Claim
51 words
A ventilator as set forth in claim 1 wherein a tab means is located at each end of the upper part formed of X cross-section, each of said tabs being fixed to said top, the length of said tabs predetermining the distance that the top is spaced from said upper part.
Claim 4
Dependent Claim
47 words
A ventilator as set forth in claim 2 wherein a second tab means extends upwardly from the center of said upper part formed of X cross-section, a rope-like means passing through a hole in said top being connected to said second tab means for supporting said ventilator.
Claim 5
Dependent Claim
41 words
A ventilator as set forth in claim 3 wherein the end of each of said tab means has a hole aligned with a hole in said top, rigid support members extending between opposite holes along the meMbers forming the X shape.
Claim 6
Dependent Claim
19 words
A ventilator as set forth in claim 4 wherein the rigid support members extend through the second tab means.
Claim 7
Dependent Claim
41 words
A ventilator as set forth in claim 1 wherein the means for holding the bottom section open and fixing it within an opening comprises rigid holding members extending between holes located in opposite corners of the bottom of said lower part.
Claim 8
Dependent Claim
42 words
A ventilator as set forth in claim 1 wherein the lower part formed of square cross-section has the area increasing from the top to the bottom thereof, the upper part of X cross-section being of the same size for its entire length.
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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |