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US4190874A
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US
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Anti-static device for clothes dryers
Assignee: Individual
•
Filing: 1978-06-21
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Granted: 1980-02-26
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Expires: 1998-06-21
Abstract
Abstract An electrical conductive member is attached to the clothes tumbling vanes of a rotary clothes dryer in a manner to induce electrical current flow in the drying tumbling clothes to neutralize the frictionally created static electricity therein.
Inventors
- 👤 Raymond Pasold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:03
CPC Classifications
H; H05; H05F; H05F3/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
68 words
An anti-static device for use in rotary clothes dryers having a rotatable drying drum including tumbler vanes by which clothes are tumbled in heated air comprising: (a) a conductive member mounted upon the tumbler vanes of the clothes drying drum for contracting the clothes as they are tumbled thereby so as to induce electrical current in the clothes thereby neutralizing static elecrical charges developed therein by friction therebetween.
Claim 2
Dependent Claim
68 words
An anti-static device for use in rotary clothes dryers having a rotatable drying drum including tumbler vanes by which clothes are tumbled in heated air comprising: (a) a conductive member mounted upon the tumbler vanes of the clothes drying drum for contracting the clothes as they are tumbled thereby so as to induce electrical current in the clothes thereby neutralizing static elecrical charges developed therein by friction therebetween.
Claim 3
Dependent Claim
26 words
An anti-static device as defined by claim 1 wherein said conductive member provides means for removable connection to the tumbler vanes of the rotatable drying drum.
Claim 4
Dependent Claim
39 words
An anti-static device as defined by claim 1 wherein said conductive member is preferably formed from a substantial U-shaped copper sheet and adapted to be positioned upon the exposed edges of the tumbler vanes of the rotary clothes dryer.
Claim 5
Dependent Claim
26 words
An anti-static device as defined by claim 3 wherein said copper sheet provides means for removable connection to the tumbler vanes of the rotatable drying drum.
References Cited (Backward Citations)
US2568068A
Cited
US3161479A
Cited
US3197885A
Cited
US3768227A
Cited
US3723811A
Cited
US3713280A
Cited
US3991479A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-02-25 | 1983-08-27 | 1984-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-25 | 1987-08-27 | 1988-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-25 | 1991-08-27 | 1992-02-26 | $7700.00 | Window Closed / Lapsed |