US3942371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bubble generating devices
Assignee: National Research Development Corp UK
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Filing: 1974-07-26
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Granted: 1976-03-09
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Expires: 1994-07-26
Abstract
Abstract A bubble generating device consisting of two tube assemblies presenting a substantially linear support portion leading into a second portion of generally U-shape. In operation liquid is passed through the annular space between the two assemblies and air or some other gas is passed down the inner of the two assemblies. In one of the embodiments described, only one tube assembly is present. This latter embodiment can be used to provide bubbles in liquid flows, gas or coloured liquid being passed through the device in such cases.
Inventors
- 👤 Denis William Bryer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:24
CPC Classifications
G; G01; G01M; G01M9/00; G01M9/02; G01M9/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
131 words
A device for generating bubbles in a direction of fluid flow, the device comprising: a support portion having an inlet adapted to be supplied from a source of material used in forming bubbles and having at at least one end thereof a substantially linear axis; a curved portion joined to said one end of the support portion, said curved portion, with increasing distance from the support portion, bending away from and then back towards an extension of said axis from the support portion, said curved portion being bent away from the support portion in a direction opposite that of the fluid flow; and at least one passage within the support and curved portions, said passage extending from the inlet of said support portion to an outlet port from the curved portion.
Claim 2
Independent Claim
131 words
A device for generating bubbles in a direction of fluid flow, the device comprising: a support portion having an inlet adapted to be supplied from a source of material used in forming bubbles and having at at least one end thereof a substantially linear axis; a curved portion joined to said one end of the support portion, said curved portion, with increasing distance from the support portion, bending away from and then back towards an extension of said axis from the support portion, said curved portion being bent away from the support portion in a direction opposite that of the fluid flow; and at least one passage within the support and curved portions, said passage extending from the inlet of said support portion to an outlet port from the curved portion.
Claim 3
Dependent Claim
65 words
A device as claimed in claim 1 in which two passages are provided by two tube assemblies, one within the other, the end of one of said tubes at the support portion being joined to said inlet and the end of the other of said tubes at the support portion being adapted to be supplied from a second source of material used in forming bubbles.
Claim 4
Dependent Claim
25 words
A device as claimed in claim 2 in which the inner assembly stops short of the outer assembly at the outlet port of the device.
Claim 5
Dependent Claim
39 words
A device as claimed in claim 3 in which the inner assembly stops short of the outer assembly by an amount roughly equal to half the internal diameter of the outer assembly at the outlet port of the device.
Claim 6
Dependent Claim
27 words
A device as claimed in claim 2 in which the tubes in the two assemblies are co-axial at least immediately adjacent the outlet port of the device.
Claim 7
Dependent Claim
31 words
A device as claimed in claim 1 in which the second portion of the device terminates as a substantially straight section lying substantially perpendicular to the axis of the support portion.
Claim 8
Dependent Claim
24 words
A device as claimed in claim 1 in which the outlet port of the device lies on the extension of the support portion axis.
Claim 9
Dependent Claim
18 words
A device as claimed in claim 1 in which the curved portion is bent in a generally U-shape.
References Cited (Backward Citations)
US2134890A
Cited
US2941695A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-09 | 1979-09-08 | 1980-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-09 | 1983-09-08 | 1984-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-09 | 1987-09-08 | 1988-03-09 | $7700.00 | Window Closed / Lapsed |