US3743446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Standing wave pump
Assignee: Atek Ind Inc
•
Filing: 1971-07-12
•
Granted: 1973-07-03
•
Expires: 1991-07-12
Abstract
Abstract An efficient fluid pump which has a chamber for receiving the fluid to be pumped and a transducer for establishing a travelling wave in the fluid. The length of the chamber and the frequency of the transducer are adjusted so that a standing wave pattern is set up in the fluid having one or more pressure nodes and one or more pressure antinodes in it. At least one entrance port is provided in the chamber at the pressure nodes and at least one exit port is provided in the chamber at the pressure antinodes so that fluid will be drawn into the cylinder at the pressure node and will be forced out of the cylinder at the pressure antinode to achieve a pumping action.
Inventors
- 👤 H Mandroian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:04
CPC Classifications
F; F04; F04F; F04F7/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
112 words
A pump comprising: a chamber for receiving a fluid to be pumped; driver means, including transducer means, for establishing travelling waves in said fluid in said chamber, said transducer means being positioned within said chamber to create travelling waves on both sides of said transducer; means including said driver means and said chamber for converting said travelling waves to standing wave patterns in said fluid in said chamber on both sides of said transducer having one or more pressure nodes and one or more pressure antinodes therein; at least one entrance port in said chamber at said pressure nodes; and at least one exit port in said chamber at said pressure antinodes.
Claim 2
Dependent Claim
112 words
A pump comprising: a chamber for receiving a fluid to be pumped; driver means, including transducer means, for establishing travelling waves in said fluid in said chamber, said transducer means being positioned within said chamber to create travelling waves on both sides of said transducer; means including said driver means and said chamber for converting said travelling waves to standing wave patterns in said fluid in said chamber on both sides of said transducer having one or more pressure nodes and one or more pressure antinodes therein; at least one entrance port in said chamber at said pressure nodes; and at least one exit port in said chamber at said pressure antinodes.
Claim 3
Dependent Claim
22 words
The pump of claim 1 wherein entrance and exit ports are positioned in said chamber on both sides of said transducer means.
Claim 4
Dependent Claim
127 words
A pump comprising: a chamber for receiving a fluid to be pumped; driver means for establishing a travelling wave in said fluid in said chamber; means including said driver means and said chamber for converting said travelling wave to a standing wave pattern in said fluid in said chamber having one or more pressure nodes and one or more pressure antinodes therein, said chamber, said driver means and said aforesaid means forming an oscillator circuit and said travelling wave generating a positive feedback in said oscillator circuit to adjust the frequency of said driver means at the resonant frequency of said chamber; at least one entrance port in said chamber at said pressure nodes; and at least one exit port in said chamber at said pressure antinodes.
Claim 5
Dependent Claim
127 words
A pump comprising: a chamber for receiving a fluid to be pumped; driver means for establishing a travelling wave in said fluid in said chamber; means including said driver means and said chamber for converting said travelling wave to a standing wave pattern in said fluid in said chamber having one or more pressure nodes and one or more pressure antinodes therein, said chamber, said driver means and said aforesaid means forming an oscillator circuit and said travelling wave generating a positive feedback in said oscillator circuit to adjust the frequency of said driver means at the resonant frequency of said chamber; at least one entrance port in said chamber at said pressure nodes; and at least one exit port in said chamber at said pressure antinodes.
Claim 6
Dependent Claim
97 words
A pump comprising: a chamber for receiving a fluid to be pumped; driver means for establishing a travelling wave in said fluid in said chamber; means including said driver means and said chamber for converting said travelling wave to a standing wave pattern in said fluid in said chamber having one or more pressure nodes and one or more pressure antinodes therein; at least one entrance port in said chamber at said pressure noDes, said entrance port comprising a valveless opening in said chamber; and at least one exit port in said chamber at said pressure antinodes.
Claim 7
Dependent Claim
97 words
A pump comprising: a chamber for receiving a fluid to be pumped; driver means for establishing a travelling wave in said fluid in said chamber; means including said driver means and said chamber for converting said travelling wave to a standing wave pattern in said fluid in said chamber having one or more pressure nodes and one or more pressure antinodes therein; at least one entrance port in said chamber at said pressure noDes, said entrance port comprising a valveless opening in said chamber; and at least one exit port in said chamber at said pressure antinodes.
Claim 8
Dependent Claim
35 words
The pump of claim 4 wherein said driver means includes a pair of synchronized transducers each one positioned at one end of said chamber to obtain a greater pressure differential in said nodes and antinodes.
Claim 9
Dependent Claim
20 words
The pump of claim 4 wherein said chamber includes a bellows-type section operable to expand and contract with temperature variations.
Claim 10
Dependent Claim
41 words
The pump of claim 4 wherein said driver means includes a transducer and said transducer is supported by a webbing coupled to the sides of said chamber, said entrance or exit port being formed between said transducer and said chamber sides.
Claim 11
Dependent Claim
122 words
A pump comprising: a chamber for receiving a fluid to be pumped; driver means for establishing a travelling wave in said fluid in said chamber; means including said driver means and said chamber for converting said travelling wave to a standing wave pattern in said fluid in said chamber having one or more pressure nodes and one or more pressure antinodes therein; at least one entrance port in said chamber at said pressure nodes; and at least one exit port in said chamber at said pressure antinodes; said driver means including a transducer and said transducer being supported by a webbing coupled to the sides of said chamber, said entrance or exit port being formed between said transducer and said chamber sides.
Claim 12
Dependent Claim
122 words
A pump comprising: a chamber for receiving a fluid to be pumped; driver means for establishing a travelling wave in said fluid in said chamber; means including said driver means and said chamber for converting said travelling wave to a standing wave pattern in said fluid in said chamber having one or more pressure nodes and one or more pressure antinodes therein; at least one entrance port in said chamber at said pressure nodes; and at least one exit port in said chamber at said pressure antinodes; said driver means including a transducer and said transducer being supported by a webbing coupled to the sides of said chamber, said entrance or exit port being formed between said transducer and said chamber sides.
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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |