US3767971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Static bleed resistor
Assignee: Avco Corp
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Filing: 1971-05-05
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Granted: 1973-10-23
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Expires: 1991-05-05
Abstract
Abstract This invention covers a drain for electrostatic charge commonly called a static bleed resistor in which a resistance element forms the core of a composite structure which includes a nontracking plastic resinous material. The core may be made from a fibrous tow, and in this event, one end of the fibers making up the tow may be exposed to the atmosphere to constitute the active bleeding elements.
Inventors
- 👤 A Patrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:52
CPC Classifications
H; H05; H05F; H05F3/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
44 words
A static bleed resistor comprising a longitudinal resistance element having a large number of parallel and essentially insulated longitudinal electrical conducting paths embedded within a non-tracking plastic matrix, each of said conducting paths having a resistance per length of about 1011 ohms per inch.
Claim 2
Dependent Claim
44 words
A static bleed resistor comprising a longitudinal resistance element having a large number of parallel and essentially insulated longitudinal electrical conducting paths embedded within a non-tracking plastic matrix, each of said conducting paths having a resistance per length of about 1011 ohms per inch.
Claim 3
Dependent Claim
40 words
A static bleed resistor as described in claim 1 where said resistance element is a tow of about 105 longitudinal fiber or filament conducting paths, each of said fibers or filaments having a resistance of about 1011 ohms per inch.
Claim 4
Dependent Claim
21 words
A static bleed resistor as described in claim 2 where one terminal end of said tow is exposed to the atmosphere.
Claim 5
Dependent Claim
17 words
A static bleed resistor as described in claim 2 where said one terminal end is conically shaped.
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) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |