Patent US4299701A successfully refreshed from Google Patents.
US4299701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic fluid treating apparatus
Assignee: Dyna Flex Inc
•
Filing: 1980-01-25
•
Granted: 1981-11-10
•
Expires: 2000-01-25
Abstract
Abstract A device for treating fluids passing therethrough with a pulsed DC magnetic field includes a cylindrical conduit of nonmagnetic material in which there is captively held a plurality of adjacently contacting solid ferromagnetic but unmagnetized spheres. At opposite ends and surrounding the cylindrical conduit is a pair of annular pole pieces made of a ferromagnetic material between which there is circumferentially wound an activating coil supplied with pulsed DC from a power supply. The interrupted DC field provides, in connection with the pole piece and spheres, a tortuous path through the treating device where the magnetic field is concentrated at the nodes defined by the pole pieces and the spheres through which the magnetic flux path is completed from pole piece to pole piece. In the preferred embodiment the device is employed for the magnetic treatment of water passing through the cylindrical conduit.
Inventors
- 👤 Raymond K. Garrett
- 👤 John G. Fifield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:54
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/48; C02F1/484; C02F1/485; C02F2201/00; C02F2201/46; C02F2201/461; C02F2201/46105; C02F2201/4616; C02F2201/4617; C02F2201/46175; C02F2201/48; C02F2201/483; C02F2303/00; C02F2303/22
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
136 words
A water treating apparatus comprising: a conduit of nonmagnetic material for the passage of water to be treated; a coil coaxial with and surrounding said conduit; a pair of pole pieces positioned in spaced relationship to one another at opposite ends of said coil, a plurality of ferromagnetic spheres each having a diameter greater than one-half the inner dimension of said conduit fixedly positioned in said conduit in the space surrounded by said coil and adjacent said pole pieces, said spheres positioned in alternately staggered relationship to define a tortuous fluid flow path through said conduit; and power supply means coupled to said coil for providing pulsed DC current to said coil such that an interrupted magnetic field is provided with nodes at said pole pieces and said spheres to treat water passing through said conduit.
Claim 2
Dependent Claim
136 words
A water treating apparatus comprising: a conduit of nonmagnetic material for the passage of water to be treated; a coil coaxial with and surrounding said conduit; a pair of pole pieces positioned in spaced relationship to one another at opposite ends of said coil, a plurality of ferromagnetic spheres each having a diameter greater than one-half the inner dimension of said conduit fixedly positioned in said conduit in the space surrounded by said coil and adjacent said pole pieces, said spheres positioned in alternately staggered relationship to define a tortuous fluid flow path through said conduit; and power supply means coupled to said coil for providing pulsed DC current to said coil such that an interrupted magnetic field is provided with nodes at said pole pieces and said spheres to treat water passing through said conduit.
Claim 3
Dependent Claim
12 words
The apparatus as defined in claim 1 wherein said conduit is cylindrical.
Claim 4
Dependent Claim
36 words
The apparatus as defined in claim 2 wherein said pole pieces are annular and coaxially surround said conduit and wherein said apparatus further includes a ferromagnetic sleeve surrounding said coil and extending between said pole pieces.
Claim 5
Dependent Claim
18 words
The apparatus as defined in claim 3 wherein said spheres are solid and include a protective outer covering.
Claim 6
Dependent Claim
15 words
The apparatus as defined in claim 4 wherein said protective covering is a resin coating.
Claim 7
Dependent Claim
17 words
The apparatus as defined in claim 4 wherein said protective covering is an outer plating of nickel.
Claim 8
Dependent Claim
26 words
The apparatus as defined in claim 1 wherein said power supply provides pulsating DC current to said coil at a rate approximately twice the line frequency.
References Cited (Backward Citations)
US2939830A
Cited
GB1189888A
Cited
US3539509A
Cited
US3555475A
Cited
US3567026A
Cited
US3841486A
Cited
US3869390A
Cited
US3979288A
Cited
US3873448A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-11-09 | 1985-05-11 | 1985-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-09 | 1989-05-11 | 1989-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-09 | 1993-05-11 | 1993-11-10 | $7700.00 | Window Closed / Lapsed |