US4253684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick connect coupler with air shield
Assignee: Monsanto Co
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Filing: 1979-05-14
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Granted: 1981-03-03
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Expires: 1999-05-14
Abstract
Abstract A quick connect coupler for fluid transfer is disclosed in which one or both of the mating coupler members is provided with a sleeve which encloses at least a portion of said coupler member adjacent to its coupling end. The sleeve has an inlet for admission of air through its outer wall, a narrow concentric gap between its inner wall and the enclosed coupler member at said coupling end, and a passageway leading from said air inlet to said concentric gap for passage of air over said coupling end. The coupler is adapted for repeated connecting and disconnecting by cooperating releasable coupling means without loss of sterility by virtue of an air shield which is produced over said coupling end by passage of sterile air through the concentric gap.
Inventors
- 👤 William R. Tolbert
- 👤 Joseph Feder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:54
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/08; F16L37/084; F16L37/0847; A; A61; A61M; A61M39/00; A61M39/10; A61M39/16; A61M39/18; F16L55/00; A61M2039/1066; A61M2039/1088; Y; Y10; Y10S; Y10S604/00; Y10S604/905
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
190 words
An air shielded quick connect coupler comprising first and second coupler members, each said coupler member having a body, a fluid passageway through said body and adapted to be joined to a fluid source at one end and having an opposite end with cooperating releasable coupling means adapted for mutual coupling with the other coupler member, a sleeve which encloses the body of at least one of said coupler members over at least a portion of the length of said body adjacent to its coupling end, said sleeve being open at its distal end around the coupling end of said coupler member and being closed at its opposite end over said coupler member, and said sleeve having an air inlet for admission of air through its outer wall, a narrow concentric gap between the inner wall of said sleeve and the outer wall of said enclosed coupler member at said coupling end, and an air passageway leading from said air inlet to said concentric gap for passage of air through said sleeve and exiting at the distal end of said sleeve over the coupling end of said enclosed coupler member.
Claim 2
Dependent Claim
190 words
An air shielded quick connect coupler comprising first and second coupler members, each said coupler member having a body, a fluid passageway through said body and adapted to be joined to a fluid source at one end and having an opposite end with cooperating releasable coupling means adapted for mutual coupling with the other coupler member, a sleeve which encloses the body of at least one of said coupler members over at least a portion of the length of said body adjacent to its coupling end, said sleeve being open at its distal end around the coupling end of said coupler member and being closed at its opposite end over said coupler member, and said sleeve having an air inlet for admission of air through its outer wall, a narrow concentric gap between the inner wall of said sleeve and the outer wall of said enclosed coupler member at said coupling end, and an air passageway leading from said air inlet to said concentric gap for passage of air through said sleeve and exiting at the distal end of said sleeve over the coupling end of said enclosed coupler member.
Claim 3
Dependent Claim
23 words
The air shielded quick connect coupler of claim 1 in which the coupler members are body and stem members having friction coupling means.
Claim 4
Dependent Claim
27 words
The air shielded quick connect coupler of claim 1 in which the coupler members are body and stem members having cooperating annular projection and detent coupling means.
Claim 5
Dependent Claim
60 words
The air shielded quick connect coupler of claim 1 in which said sleeve has a beveled inner edge at its distal end which restricts the concentric gap between the inner wall of said sleeve and the outer wall of said enclosed coupler member, such that air passing through said concentric gap will tend to form in an intersecting conical pattern.
References Cited (Backward Citations)
GB855040A
Cited
US3170667A
Cited
US3394954A
Cited
US3385036A
Cited
US3761117A
Cited
US4030494A
Cited
US4022205A
Cited
US3955833A
Cited
US4019512A
Cited
US4114853A
Cited
US4150494A
Cited
US4116476A
Cited
US4123091A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-02 | 1984-09-01 | 1985-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-02 | 1988-09-01 | 1989-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-02 | 1992-09-01 | 1993-03-03 | $7700.00 | Window Closed / Lapsed |