US4223837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dosed delivery device for liquids, particularly for delivering water to vegetal cultivations
Assignee: BREVETTI UMBRIA Srl
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Filing: 1978-08-15
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Granted: 1980-09-23
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Expires: 1998-08-15
Abstract
Abstract A liquid dispensing device includes a tank, a floating body, a U-shaped tubular capillary syphon mounted in the floating body for vertical adjustment with respect to the floating body with an inlet end extending beneath the floating body and a discharge end for delivering liquid from the tank. In a second embodiment, the discharge end of the capillary syphon discharges into a vertical hollow tube inside the tank open at its bottom and on which the float member is positioned for guided movement.
Inventors
- 👤 Lino Gubbiotti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:18
CPC Classifications
A; A01; A01G; A01G27/00; A01G27/008; Y; Y10; Y10T; Y10T137/00; Y10T137/2713; Y10T137/2917; Y10T137/8593; Y10T137/86236; Y10T137/86252
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
107 words
A liquid delivery device comprising a tank containing liquid to be delivered, a hollow support member for said tank, said hollow support member being inserted in a tubular support element having an obliquely cut lower end portion, a float located in said liquid for vertical movement in the tank to follow the liquid level therein and at least one syphon capillary having a discharge end positioned in said hollow support member and an inlet end immersed in said liquid, said syphon capillary being positioned on said float for vertical adjustment with respect thereto for effecting a variation in the delivery rate of liquid by the syphon capillary.
Claim 2
Dependent Claim
107 words
A liquid delivery device comprising a tank containing liquid to be delivered, a hollow support member for said tank, said hollow support member being inserted in a tubular support element having an obliquely cut lower end portion, a float located in said liquid for vertical movement in the tank to follow the liquid level therein and at least one syphon capillary having a discharge end positioned in said hollow support member and an inlet end immersed in said liquid, said syphon capillary being positioned on said float for vertical adjustment with respect thereto for effecting a variation in the delivery rate of liquid by the syphon capillary.
Claim 3
Dependent Claim
138 words
A liquid delivery device comprising a tank containing liquid to be delivered, a float located in said liquid for vertical movement in the tank to follow the liquid level therein, at least one syphon capillary having an inlet end immersed in said liquid and positioned on said float for vertical adjustment with respect thereto for effecting a variation in the delivery rate of liquid by the syphon capillary, a cover provided on said tank, a slot in said cover through which said syphon capillary extends, said syphon capillary including a discharge end positioned internally of the periphery of said tank and a hollow tubular guide member positioned internally of said tank in vertical orientation extending through an aperture in said float means with said discharge end of said syphon capillary being positioned internally of said hollow tubular member.
Claim 4
Dependent Claim
138 words
A liquid delivery device comprising a tank containing liquid to be delivered, a float located in said liquid for vertical movement in the tank to follow the liquid level therein, at least one syphon capillary having an inlet end immersed in said liquid and positioned on said float for vertical adjustment with respect thereto for effecting a variation in the delivery rate of liquid by the syphon capillary, a cover provided on said tank, a slot in said cover through which said syphon capillary extends, said syphon capillary including a discharge end positioned internally of the periphery of said tank and a hollow tubular guide member positioned internally of said tank in vertical orientation extending through an aperture in said float means with said discharge end of said syphon capillary being positioned internally of said hollow tubular member.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-23 | 1984-03-24 | 1984-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-23 | 1988-03-24 | 1988-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-23 | 1992-03-24 | 1992-09-23 | $7700.00 | Window Closed / Lapsed |