US4072247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid dispensing device
Assignee: NIPPON GLASS MEASURE CO Ltd
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Filing: 1976-06-24
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Granted: 1978-02-07
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Expires: 1996-06-24
Abstract
Abstract A liquid dispensing device comprising a cap structure mounted on a liquid container, a cylinder extending vertically upward from the cap structure, a manually operable plunger slidable within the cylinder, an adjustment assembly for controlling the stroke of the plunger, and a discharge assembly and suction assembly respectively incorporating one-way valves therein and removably fitted in respective bores in the cap structure.
Inventors
- 👤 Seichi Yamazaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:48
CPC Classifications
G; G01; G01F; G01F11/00; G01F11/02; G01F11/021; G01F11/025; G01F11/028; B; B01; B01L; B01L3/00; B01L3/02; B01L3/0282; B05; B05B; B05B11/00; B05B11/01; B05B11/10; B05B11/1001; B05B11/1005; B05B11/1007; B05B11/1015
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
243 words
A liquid dispensing device comprising a cap structure adapted to be mounted on the top of a liquid container, a cylinder extending vertically upward from the cap structure, a manually operable plunger slidably fitted in the cylinder, means for controlling the stroke of the sliding movement of the plunger within the cylinder, a delivery assembly including a one-way delivery valve and a delivery nozzle, and a suction assembly including a one-way suction valve and a suction tube extending into the liquid in the liquid container, said delivery assembly and suction assembly being respectively removably force fitted into respective bores formed in the upper portion and the lower portion of the cap structure, said bores communicate with each other and with the interior of said cylinder, said stroke controlling means comprising a head of increased diameter formed on the upper end of the plunger for engaging with the upper end of the cylinder to prevent the downward movement of the plunger, a sleeve receiving the head of the plunger slidably therein, one or more gauge members being selected from a series of gauge members each having a predetermined thickness and being located and clamped between the head of the plunger and a cap member closing the upper end of the sleeve, and a projection formed on the inner periphery of the sleeve for cooperating with a stop member formed on the cylinder to restrict the upward movement of the sleeve relative to the cylinder.
Claim 2
Dependent Claim
243 words
A liquid dispensing device comprising a cap structure adapted to be mounted on the top of a liquid container, a cylinder extending vertically upward from the cap structure, a manually operable plunger slidably fitted in the cylinder, means for controlling the stroke of the sliding movement of the plunger within the cylinder, a delivery assembly including a one-way delivery valve and a delivery nozzle, and a suction assembly including a one-way suction valve and a suction tube extending into the liquid in the liquid container, said delivery assembly and suction assembly being respectively removably force fitted into respective bores formed in the upper portion and the lower portion of the cap structure, said bores communicate with each other and with the interior of said cylinder, said stroke controlling means comprising a head of increased diameter formed on the upper end of the plunger for engaging with the upper end of the cylinder to prevent the downward movement of the plunger, a sleeve receiving the head of the plunger slidably therein, one or more gauge members being selected from a series of gauge members each having a predetermined thickness and being located and clamped between the head of the plunger and a cap member closing the upper end of the sleeve, and a projection formed on the inner periphery of the sleeve for cooperating with a stop member formed on the cylinder to restrict the upward movement of the sleeve relative to the cylinder.
Claim 3
Dependent Claim
32 words
A liquid dispensing device as set forth in claim 1 wherein a coil spring is disposed between the cap structure and the sleeve to urge the sleeve upwardly relative to the cylinder.
Claim 4
Dependent Claim
56 words
A liquid dispensing device as set forth in claim 1 wherein the head of the plunger, the selected gauge member and the cap member of the sleeve are clamped together by a set screw which passes through openings formed in the cap member and the gauge member and threadingly engages with the head of the plunger.
Claim 5
Dependent Claim
30 words
A liquid dispensing device as set forth in claim 1 wherein a radially extending lug is formed on the outer periphery of the sleeve to act as an operating handle.
Claim 6
Dependent Claim
46 words
A liquid dispensing device as set forth in claim 1 wherein a window is formed in the circumference of said sleeve for attaining visual indication of the thickness of the selected gauge member or the quantity of liquid which will be discharged by operating the device.
Claim 7
Dependent Claim
39 words
A liquid dispensing device as set forth in claim 1 wherein a liquid containing bottle having a capacity substantially smaller than that of the liquid container is adapted to be mounted on the lower portion of the cap structure.
Claim 8
Dependent Claim
38 words
A liquid dispensing device as set forth in claim 1 wherein the lower portion of the cap structure has internal screw thread for threadingly engaging with external screw thread formed on the neck portion of the liquid container.
Claim 9
Dependent Claim
71 words
A liquid dispensing device as set forth in claim 1 wherein a generally cylindrical adapter having external screw thread for engaging with the internal screw thread of the cap structure and internal screw thread for engaging with external screw thread formed on the neck portion of a liquid container is adapted to mount a liquid containing bottle substantially smaller than the liquid container on the lower portion of the cap structure.
Claim 10
Dependent Claim
23 words
A liquid dispensing device as set forth in claim 1 wherein the cylinder is removably force-fitted in a bore of the cap structure.
Claim 11
Dependent Claim
25 words
A liquid dispensing device as set forth in claim 1 wherein each of the one-way delivery and suction valves comprises a ball of ceramic material.
Claim 12
Dependent Claim
23 words
A liquid dispensing device as set forth in claim 10 wherein balls of said one-way valves have respectively strokes of predetermined small amount.
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) | 1981-02-06 | 1981-08-08 | 1982-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-06 | 1985-08-08 | 1986-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-06 | 1989-08-08 | 1990-02-07 | $7700.00 | Window Closed / Lapsed |