US3759426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manually-operated liquid dispenser
Assignee: Individual
•
Filing: 1972-09-08
•
Granted: 1973-09-18
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Expires: 1992-09-08
Abstract
Abstract A liquid dispenser for manual operation comprising a body for connection to the top of a liquid container, and a contractible head having a discharge portion and fitted into said body, both the body and the head being of elastomeric plastic material, spring means for retaining the head extended in non-dispensing position, and the body and the head being provided with integral sealing portions that cooperate to control flow from said container. The usual ball valves common to the present type of device are dispensed with said sealing portions serving as pressure-operated valve-like means that control flow of liquid from the container to said discharge portion of the head.
Inventors
- 👤 N Kane
- 👤 V Kane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:27
CPC Classifications
B; B05; B05B; B05B1/00; B05B1/34; B05B1/3405; B05B1/341; B05B1/3421; B05B1/3426; B05B11/00; B05B11/01; B05B11/10; B05B11/1001; B05B11/1042; B05B11/1059; B05B11/106; B05B11/1066; B05B11/1067; B05B11/1069; B05B11/1094; B05B11/0005; B05B11/0037; B05B11/0039; B05B11/0044
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
264 words
A manually-operated liquid dispenser comprising: a body of elastomeric plastic material adapted for attachment to the neck of a container of liquid, said body having an outer chamber open at its upper end and closed to the interior of the liquid container, and an axial chamber substantially longitudinally coextensive with said outer chamber and having a lower extension open to the interior of the container, a tubular wall separating said chambers, and an integral and annular flexible seal extending upwardly from said tubular wall, a head of elastomeric plastic material having an outer wall telescopically fitted into the outer wall of the housing and terminating at its upper end in a liquid-discharging outlet, said head having an outer chamber with its upper and open to said outlet and its lower end open to and in alignment with the outer chamber of the housing, and an axial chamber substantially longitudinally coextensive with said outer chamber, a tubular wall separating said latter two chambers, an integral and annular flexible seal extending downwardly from the last-mentioned tubular wall in sealing engagement with the outer cylindrical surface of the tubular wall of the body, and said head being provided with an axial plunger rod extending through the mentioned flexible seal of the head and in sealing engagement with the cylindrical surface of said rod, and an expansion spring biasing said body and head to longitudinally extending position, and against the bias of which the head is contractibly moved relative to the body, said spring being disposed in the mentioned aligned outer chambers of the body and the head.
Claim 2
Dependent Claim
264 words
A manually-operated liquid dispenser comprising: a body of elastomeric plastic material adapted for attachment to the neck of a container of liquid, said body having an outer chamber open at its upper end and closed to the interior of the liquid container, and an axial chamber substantially longitudinally coextensive with said outer chamber and having a lower extension open to the interior of the container, a tubular wall separating said chambers, and an integral and annular flexible seal extending upwardly from said tubular wall, a head of elastomeric plastic material having an outer wall telescopically fitted into the outer wall of the housing and terminating at its upper end in a liquid-discharging outlet, said head having an outer chamber with its upper and open to said outlet and its lower end open to and in alignment with the outer chamber of the housing, and an axial chamber substantially longitudinally coextensive with said outer chamber, a tubular wall separating said latter two chambers, an integral and annular flexible seal extending downwardly from the last-mentioned tubular wall in sealing engagement with the outer cylindrical surface of the tubular wall of the body, and said head being provided with an axial plunger rod extending through the mentioned flexible seal of the head and in sealing engagement with the cylindrical surface of said rod, and an expansion spring biasing said body and head to longitudinally extending position, and against the bias of which the head is contractibly moved relative to the body, said spring being disposed in the mentioned aligned outer chambers of the body and the head.
Claim 3
Dependent Claim
49 words
A liquid dispenser according to claim 1 in which the flexible seal on the mentioned tubular wall of the body is formed to expand under pressure in the axial chamber of the body during contraction of the head to pass such pressure to the axial chamber of the head.
Claim 4
Dependent Claim
53 words
A liquid dispenser according to claim 2 in which the pressure in said axial chamber expands the annular seal on the tubular wall separating the outer and annular chambers of the head tO pass said pressure into the outer chamber of the body and, therefore, outwardly of the discharge outlet of the head.
Claim 5
Dependent Claim
62 words
A liquid dispenser according to claim 1 in which the lower end of the axial plunger rod is provided with an enlargement to engage with and expand the annular seal that extends upwardly from the tubular wall of the body when the head is in extended position, thereby sealing the axial chamber of the head from the axial chamber of the body.
Claim 6
Dependent Claim
47 words
A liquid dispenser according to claim 1 in which the lower end of the outer wall of the head is provided with an integral sealing flange that, in all relative positions of the body and head, is in sealing engagement with the outer wall of the body.
Claim 7
Dependent Claim
52 words
A liquid dispenser according to claim 3 in which the outer wall of the body, adjacent its upper end being closed by said sealing flange when the head is in extended position and open to the outer chamber of the body during telescopic contracting movement of the head relative to the body.
Claim 8
Dependent Claim
93 words
A liquid dispenser according to claim 3 in which means is provided to lock the body and head in non-dispensing position, said means comprising an inwardly directed flange on the upper end of the body, and outwardly extending stud means on the head to engage beneath said flange, the flange being provided with openings through which the stud means are adapted to pass when the head is contracted into the body, the head and body being relatively rotational to misalign the stud means and openings to effect such locking of body and head.
Claim 9
Dependent Claim
69 words
A liquid dispenser according to claim 3 in which the upper end of the body is provided with an inwardly directed flange, the lower portion of which comprising an annular downwardly directed shoulder, and the outer wall of the head, at its end adjacent the sealing flange on said outer head wall having an upwardly directed co-engaging shoulder to limit the extension of the head relative to the body.
References Cited (Backward Citations)
US3361078A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |