US3348022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perforating film by electrical discharge
Assignee: WR Grace and Co
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Filing: 1964-08-26
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Granted: 1967-10-17
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Expires: 1984-08-26
Abstract
No abstract record available.
Inventors
- 👤 Henry G Schirmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:17
CPC Classifications
B; B26; B26F; B26F1/00; B26F1/26; B26F1/28; B26F1/24; Y; Y10; Y10S; Y10S425/00; Y10S425/037; Y10T; Y10T83/00; Y10T83/364
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
APPARATUS FOR UNIFORMLY PERFORATING A MOVING FILM OF THERMOPLASTIC MATERIAL COMPRISING, IN COMBINATION, A CHARGING BALDE ELECTRODE TRANSVERSE SAID FILM, A DISCHARGE ELECTRODE SPACED APART FROM SAID BLADE ELECTRODE HAVING A CONTINUOUS SURFACE, A SOURCE OF HIGH VOLTAGE ALTERNATING CURRENT IN COMMUNICATION WITH SAD BLADE ELECTRODE SO AS TO APPLY A POTENTIAL ACROSS THE SPACE BETWEEN SAID ELECTRODES AND PRODUCE A CORONA AND DISTINCT AREAS OF CONCENTRATED ELECTRICAL ENERGY THEREBETWEEN, MEANS FOR CONTINUOUSLY PASSING A DIELECTRIC FILM BETWEEN SAID ELECTRODES, AN ELECTRICALLY INSULATIVE, DISCONTINUOUS, DIELECTRIC SPACING MEANS POSITIONED BETWEEN SAID FILM AND A PROTECTIVE CONTINUOUS DIELECTRIC MATERIAL DISPOSED ON THE CONTINUOUS SURFACE OF SAID DISCHARGING ELECTRODE AND SAID SPACING MEANS HAVING MEANS FOR PERIODICALLY DISRUPTING SAID CORONA LONGITUDINALLY BY ALTERNATELY EXPOSING AND COVERING SAID DISCHARGE ELECTRODE SURFACE.
Claim 2
Dependent Claim
127 words
APPARATUS FOR UNIFORMLY PERFORATING A MOVING FILM OF THERMOPLASTIC MATERIAL COMPRISING, IN COMBINATION, A CHARGING BALDE ELECTRODE TRANSVERSE SAID FILM, A DISCHARGE ELECTRODE SPACED APART FROM SAID BLADE ELECTRODE HAVING A CONTINUOUS SURFACE, A SOURCE OF HIGH VOLTAGE ALTERNATING CURRENT IN COMMUNICATION WITH SAD BLADE ELECTRODE SO AS TO APPLY A POTENTIAL ACROSS THE SPACE BETWEEN SAID ELECTRODES AND PRODUCE A CORONA AND DISTINCT AREAS OF CONCENTRATED ELECTRICAL ENERGY THEREBETWEEN, MEANS FOR CONTINUOUSLY PASSING A DIELECTRIC FILM BETWEEN SAID ELECTRODES, AN ELECTRICALLY INSULATIVE, DISCONTINUOUS, DIELECTRIC SPACING MEANS POSITIONED BETWEEN SAID FILM AND A PROTECTIVE CONTINUOUS DIELECTRIC MATERIAL DISPOSED ON THE CONTINUOUS SURFACE OF SAID DISCHARGING ELECTRODE AND SAID SPACING MEANS HAVING MEANS FOR PERIODICALLY DISRUPTING SAID CORONA LONGITUDINALLY BY ALTERNATELY EXPOSING AND COVERING SAID DISCHARGE ELECTRODE SURFACE.
References Cited (Backward Citations)
FR1248092A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |