US3780951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leakproof head for hand sprayer
Assignee: AFA Products Inc
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Filing: 1973-01-30
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Granted: 1973-12-25
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Expires: 1993-01-30
Abstract
Abstract A hand-operated liquid sprayer attached to a liquid container is provided with a hand rotatable screw collar which can be screwed up or down to open or close an atmospheric vent passage to the container and thus to prevent liquid leakage from the container through the vent when the vent passage is closed regardless of the attitude of the container, and, to allow atmospheric venting of the container''s interior when the vent passage is open.
Inventors
- 👤 R Powers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:46
CPC Classifications
B; B05; B05B; B05B11/00; B05B11/01; B05B11/10; B05B11/1001; B05B11/1009; B05B11/1011
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
163 words
In combination, a spray nozzle, hand operated pump means connected thereto and in communication therewith, a neck communicably connecting said pump means and the interior of a liquid container, liquid pickup means communicably connected therebetween and extended below the level of liquid contained in the container, closure means for said container, an annular shoulder on said neck having an annular open groove in its upper face, a vent passage through said shoulder in communication with the open groove and the interior of the container, a screw collar threadably engaged with said neck and capable of being screwed up and down thereon, an annular rim on said collar extended toward and aligned with said open groove and so located with respect to it that as the collar is screwed toward the groove the rim will enter the groove and contact it in a liquid-tight manner to close the vent passage to any flow of liquid, whereby leakage of liquid from the container is prevented.
Claim 2
Dependent Claim
163 words
In combination, a spray nozzle, hand operated pump means connected thereto and in communication therewith, a neck communicably connecting said pump means and the interior of a liquid container, liquid pickup means communicably connected therebetween and extended below the level of liquid contained in the container, closure means for said container, an annular shoulder on said neck having an annular open groove in its upper face, a vent passage through said shoulder in communication with the open groove and the interior of the container, a screw collar threadably engaged with said neck and capable of being screwed up and down thereon, an annular rim on said collar extended toward and aligned with said open groove and so located with respect to it that as the collar is screwed toward the groove the rim will enter the groove and contact it in a liquid-tight manner to close the vent passage to any flow of liquid, whereby leakage of liquid from the container is prevented.
Claim 3
Dependent Claim
35 words
The invention set forth in claim 1 with the annular groove vee-shaped in cross section with slanted annular sides and adapted to intercept the rim of the collar as it is screwed toward the container.
Claim 4
Dependent Claim
36 words
The invention set forth in claim 1 with the annular rim and the annular groove both vee-shaped in cross section with slanted sides adapted to contact one another as the collar is screwed toward the container.
Claim 5
Dependent Claim
15 words
The invention set forth in claim 1 with the annular rim rectangular in cross section.
Claim 6
Dependent Claim
73 words
The invention set forth in claim 1 with the closure means comprising a screw cap through which said neck is extended and which intercepts an annular flange on the neck with the flange abutting the rim of a screw-threaded opening in the container upon which the cap is screwed, whereby the flange is clamped between the cap and the container opening rim to effect a liquid-tight seal between the flange and the rim.
Claim 7
Dependent Claim
20 words
The invention set forth in claim 5 with an annular gasket between the rim of the opening and the flange.
Claim 8
Dependent Claim
26 words
The invention set forth in claim 1 with flats on the exterior of at least a portion of the collar to facilitate screwing thereof by hand.
Claim 9
Dependent Claim
24 words
The invention set forth in claim 1 with a roughened surface on at least part of said collar to facilitate screwing thereof by hand.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |