US4618909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Static discharge device
Assignee: Individual
•
Filing: 1985-12-23
•
Granted: 1986-10-21
•
Expires: 2005-12-23
Abstract
Abstract A static discharge device including a band of material which tends to give up electrons, mounted on the exterior circumference of a clothes dryer drum. A layer of material tending to tear away electrons is affixed to the drum-adjacent face of a contact shoe which is mounted on a side wall of the dryer and biased to frictionally contact the band. The contact shoe is electrically grounded, so that the electrons which are collected by the layer of material and then transmitted to the contact shoe are continuously removed to ground.
Inventors
- 👤 James L. Sanders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:17
CPC Classifications
H; H05; H05F; H05F3/00; H05F3/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
141 words
A static discharge device for use on a clothes dryer, comprising: a continuous band of material tending to give up electrons to adjacent atoms, attached to the exterior circumference of the drum of said clothes dryer; a contact shoe of electrically conductive material mounted on one end to an electrically insulated base attached to said dryer, and located such that a portion of one face of said shoe is in frictional contact with said band; a layer of material tending to tear away electrons from adjacent atoms, attached to the drum-adjacent face of said shoe and having dimensions greater than the area of contact between said shoe and band; and, a wire, electrically connecting said shoe to an independent ground, whereby electrical charges built up on said layer of material will be discharged through said shoe and wire to the ground.
Claim 2
Dependent Claim
141 words
A static discharge device for use on a clothes dryer, comprising: a continuous band of material tending to give up electrons to adjacent atoms, attached to the exterior circumference of the drum of said clothes dryer; a contact shoe of electrically conductive material mounted on one end to an electrically insulated base attached to said dryer, and located such that a portion of one face of said shoe is in frictional contact with said band; a layer of material tending to tear away electrons from adjacent atoms, attached to the drum-adjacent face of said shoe and having dimensions greater than the area of contact between said shoe and band; and, a wire, electrically connecting said shoe to an independent ground, whereby electrical charges built up on said layer of material will be discharged through said shoe and wire to the ground.
Claim 3
Dependent Claim
47 words
The static discharge device of claim 1, wherein said shoe is mounted for pivotal movement on said base, the pivotal axis thereof being parallel to the rotational axis of said dryer drum and means for maintaining contact between the layer of material and the band of material.
Claim 4
Dependent Claim
22 words
The static discharge device of claim 2, wherein said contact maintaining means is a compression affixed between the shoe and the base.
Claim 5
Dependent Claim
25 words
The static discharge device of claim 3, wherein said shoe is arcuate along its longitudinal axis and generally follows the curvature of said dryer drum.
Claim 6
Dependent Claim
25 words
The static discharge device of claim 2, wherein said shoe is arcuate along its longitudinal axis and generally follows the curvature of said dryer drum.
Claim 7
Dependent Claim
25 words
The static discharge device of claim 1, wherein said shoe is arcuate along its longitudinal axis and generally follows the curvature of said dryer drum.
Claim 8
Dependent Claim
27 words
The static discharge device of claim 1, wherein said band of material is a blend of wool and rayon, and wherein said layer of material is leather.
References Cited (Backward Citations)
US1508400A
Cited
US1977991A
Cited
US2375304A
Cited
US2568068A
Cited
US3161479A
Cited
US3643349A
Cited
US3991479A
Cited
US4190874A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-10-20 | 1990-04-21 | 1990-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-20 | 1994-04-21 | 1994-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-20 | 1998-04-21 | 1998-10-21 | $7700.00 | Window Closed / Lapsed |