US3825374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air supply device
Assignee: Individual
•
Filing: 1972-03-09
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Granted: 1974-07-23
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Expires: 1992-03-09
Abstract
Abstract An air supply device for blowing air bubbles into an aquarium. An electro-magnet creating an alternating magnetic field to actuate a vibrating arm is provided with a core having concave poles, and the electromagnet and the vibrating arm which is disposed opposite to the concave poles are held by supporting members integrally molded with an upper and lower casing of the air supply devices.
Inventors
- 👤 R Kondo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:34
CPC Classifications
F; F04; F04B; F04B35/00; F04B35/04; F04B35/045; A; A01; A01K; A01K63/00; A01K63/04; A01K63/042; F04B45/00; F04B45/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
110 words
An air supply device for an aquarium comprising an electromagnet including a bobbin, a core associated with said bobbin and having negative and positive poles, and windings on said bobbin to be connected to an AC power source for creating an alternating magnetic field, a valve housing including a diaphragm, a vibrating arm disposed opposite to said poles oscillated within said alternating magnetic field for actuating said diaphragm, and upper and lower casings including supporting members integrally molded with said casings, said supporting members having vertically extending recesses for receiving and for holding said electro-magnet and said vibrating arm within said casings when the upper and lower casings are assembled.
Claim 2
Dependent Claim
110 words
An air supply device for an aquarium comprising an electromagnet including a bobbin, a core associated with said bobbin and having negative and positive poles, and windings on said bobbin to be connected to an AC power source for creating an alternating magnetic field, a valve housing including a diaphragm, a vibrating arm disposed opposite to said poles oscillated within said alternating magnetic field for actuating said diaphragm, and upper and lower casings including supporting members integrally molded with said casings, said supporting members having vertically extending recesses for receiving and for holding said electro-magnet and said vibrating arm within said casings when the upper and lower casings are assembled.
Claim 3
Dependent Claim
28 words
An air supply device for an aquarium as claimed in claim 19, wherein said electro-magnet includes vertically projecting members attached to said bobbin engaged by a supporting members.
Claim 4
Dependent Claim
43 words
An air supply device for an aquarium as claimed in claim 19, wherein said vibrating arm includes an elastic pivoting member acting as a fulcrum of said vibrating arm, said pivoting member being held by a supporting member of one of said casings.
Claim 5
Dependent Claim
23 words
An air supply device for an aquarium as claimed in claim 1, wherein said valve housing is integrally molded with said lower casing.
Claim 6
Dependent Claim
19 words
An air supply device for an aquarium as claimed in claim 1, wherein said poles are concave in shape.
Claim 7
Dependent Claim
123 words
An air supply device for an aquarium comprising an electro-magnet including a bobbin, a core associated with said bobbin and having negative and positive poles, and windings on said bobbin to be connected to an AC power source for creating an alternating magnetic field, a valve housing including a diaphragm, a vibrating arm disposed opposite to said poles oscillated within said alternating magnetic field for actuating said diaphragm, and upper and lower casings including supporting members integrally molded with said casings for holding said electro-magnet and said vibrating arm within said casings when the upper and lower casings are assembled, said vibrating arm including bifurcated arms at an end thereof for supporting a pivoting member acting as a fulcrum of said vibrating arm.
Claim 8
Dependent Claim
123 words
An air supply device for an aquarium comprising an electro-magnet including a bobbin, a core associated with said bobbin and having negative and positive poles, and windings on said bobbin to be connected to an AC power source for creating an alternating magnetic field, a valve housing including a diaphragm, a vibrating arm disposed opposite to said poles oscillated within said alternating magnetic field for actuating said diaphragm, and upper and lower casings including supporting members integrally molded with said casings for holding said electro-magnet and said vibrating arm within said casings when the upper and lower casings are assembled, said vibrating arm including bifurcated arms at an end thereof for supporting a pivoting member acting as a fulcrum of said vibrating arm.
Claim 9
Dependent Claim
24 words
An air supply device for an aquarium as claimed in claim 6, wherein said pivoting member is a cylindrical bar of an elastic material.
Claim 10
Dependent Claim
148 words
An air supply device for an aquarium comprising an electro-magnet including a bobbin, a core associated with said bobbin and having negative and positive poles, and windings on said bobbin to be connected to an AC power source for creating an alternating magnetic field, a valve housing including a diaphragm, a vibrating arm disposed opposite to said poles oscillated within said alternating magnetic field for actuating said diaphragm, said vibrating arm pivoting on a pivoting member, and upper and lower casings including supporting members integrally molded with said casings for holding said electro-magnet and said vibrating arm within said casings when the upper and lower casings are assembled, one of said supporting members provided in said lower casing including a vertically extending recess into which a projecting member of said bobbin is inserted and another of said supporting members having a concave recess to receive said pivoting member.
Claim 11
Dependent Claim
148 words
An air supply device for an aquarium comprising an electro-magnet including a bobbin, a core associated with said bobbin and having negative and positive poles, and windings on said bobbin to be connected to an AC power source for creating an alternating magnetic field, a valve housing including a diaphragm, a vibrating arm disposed opposite to said poles oscillated within said alternating magnetic field for actuating said diaphragm, said vibrating arm pivoting on a pivoting member, and upper and lower casings including supporting members integrally molded with said casings for holding said electro-magnet and said vibrating arm within said casings when the upper and lower casings are assembled, one of said supporting members provided in said lower casing including a vertically extending recess into which a projecting member of said bobbin is inserted and another of said supporting members having a concave recess to receive said pivoting member.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |