US3991479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clothes dryer with anti-static magnet
Assignee: Individual
•
Filing: 1975-11-07
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Granted: 1976-11-16
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Expires: 1995-11-07
Abstract
Abstract A magnet is attached to an interior surface of a rotary clothes dryer in a manner to provide a magnetic field which is located within the interior of the dryer drum which induces electric currents in clothes which are tumbling in the dryer to neutralize static electric charges in the clothes.
Inventors
- 👤 Michael Dionne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:01
CPC Classifications
D; D06; D06F; D06F58/00; D06F58/20; D06F58/203
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
67 words
In a rotary clothes dryer having a rotatable dryer drum in which clothes are tumbled while they dry, the improvement comprising means for producing a non-alternating magnetic field within said dryer drum which is free to act on said clothes through an unshielded space through which said clothes tumble to induce electrical currents in said clothes by electromagnetic induction, thereby neutralizing static electrical charges in said clothes.
Claim 2
Dependent Claim
67 words
In a rotary clothes dryer having a rotatable dryer drum in which clothes are tumbled while they dry, the improvement comprising means for producing a non-alternating magnetic field within said dryer drum which is free to act on said clothes through an unshielded space through which said clothes tumble to induce electrical currents in said clothes by electromagnetic induction, thereby neutralizing static electrical charges in said clothes.
Claim 3
Dependent Claim
49 words
The clothes dryer of claim 1 in which said means for producing a magnetic field comprises a magnet attached to a portion of said clothes dryer in a position where its magnetic field extends in unshielded relationship into the interior of said dryer drum to interact with said clothes.
Claim 4
Dependent Claim
13 words
The clothes dryer of claim 2 wherein said magnet is a permanent magnet.
Claim 5
Dependent Claim
20 words
The clothes dryer of claim 2 wherein said magnet is attached to an interior surface of said rotary dryer drum.
Claim 6
Dependent Claim
63 words
The clothes dryer of claim 2 wherein the drum has an access opening, wherein there is a housing with a door opposite said access opening, and wherein said magnet is attached to the inner surface of said door opposite said access opening in a position where its magnetic field extends into the dryer drum through said access opening to interact with said clothes.
Claim 7
Dependent Claim
67 words
The clothes dryer of claim 1 wherein said means for producing a magnetic field comprises a magnetized portion in a wall of said clothes dryer adjacent to the interior of said dryer drum in such location that a portion of the magnetic field of said magnetized wall portion extends in unshielded relationship into the interior of said dryer drum in a space through which said clothes tumble.
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) | 1979-11-16 | 1980-05-17 | 1980-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-16 | 1984-05-17 | 1984-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-16 | 1988-05-17 | 1988-11-16 | $7700.00 | Window Closed / Lapsed |