Patent US4335589A successfully refreshed from Google Patents.
US4335589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grounding structures comprising composite knitted fabrics
Assignee: Federal Mogul Systems Protection Group Inc
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Filing: 1980-06-30
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Granted: 1982-06-22
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Expires: 2000-06-30
Abstract
Abstract A grounding component for dissipating electrostatic charges in bag filters, which is adapted to be attached to the filter bags to extend along the length thereof. The component comprises a pair of telescopically-related knitted tubes formed from stands of electrically-conductive material. Each tube has a number of wales equal to the number of strands and is knitted with a non-run stretch pattern.
Inventors
- 👤 Gary L. Flasher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:27
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/02; D; D04; D04B; D04B21/00; D04B21/20; B01D2201/00; B01D2201/50; D10; D10B; D10B2401/00; D10B2401/16
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
136 words
An elongated grounding component particularly adapted for dissipating electrostatic charges, comprising bare strands of electrically-conductive material, said component comprising at least one knitted tube having a given number of wales of needle loops extending longitudinally of said grounding component, any given wale of needle loops having loops alternating in sequence between loops of first and second electrically-conductive strands throughout the length of the grounding component, the first of said strands alternately forming needle loops in a wale on one side of the given wale and the second of said strands alternately forming needle loops in a wale on the other side of said given wale, said tube being flattened to insure intimate electrical contact between the strands of the knitted tube to assure multiple conductive paths between said strands throughout the length of said grounding component.
Claim 2
Dependent Claim
136 words
An elongated grounding component particularly adapted for dissipating electrostatic charges, comprising bare strands of electrically-conductive material, said component comprising at least one knitted tube having a given number of wales of needle loops extending longitudinally of said grounding component, any given wale of needle loops having loops alternating in sequence between loops of first and second electrically-conductive strands throughout the length of the grounding component, the first of said strands alternately forming needle loops in a wale on one side of the given wale and the second of said strands alternately forming needle loops in a wale on the other side of said given wale, said tube being flattened to insure intimate electrical contact between the strands of the knitted tube to assure multiple conductive paths between said strands throughout the length of said grounding component.
Claim 3
Dependent Claim
23 words
A grounding component according to claim 1 wherein said tube consists of the same number of strands as said given number of wales.
Claim 4
Dependent Claim
22 words
A grounding component according to claim 2 wherein said component comprises a pair of said knitted tubes, said tubes being telescopically related.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-06-21 | 1985-12-21 | 1986-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-21 | 1989-12-21 | 1990-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-21 | 1993-12-21 | 1994-06-22 | $7700.00 | Window Closed / Lapsed |