Patent US3428801A successfully refreshed from Google Patents.
US3428801A
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US
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Apparatus for treating the surface of plastic bottles with an electrical spark discharge
Assignee: LECTRO ENG CO
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Filing: 1966-02-16
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Granted: 1969-02-18
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Expires: 1986-02-16
Abstract
No abstract record available.
Inventors
- 👤 Charles Christopher Leach
- 👤 Ralph Lee Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:11
CPC Classifications
B; B26; B26F; B26F1/00; B26F1/26; B26F1/28; B29; B29C; B29C59/00; B29C59/10; B29C59/103
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
APPARATUS FOR TREATING THE EXTERIOR SURFACES OF PLASTIC OBJECTS TO IMPROVE THEIR ADHERENCY TO AND COMPATIBILITY WITH INKS AND ADHESIVES COMPRISING A PAIR OF ELECTRODES SPACED APART FROM EACH OTHER, MEANS INCLUDING A SOURCE OF ELECTRIC CURRENT OF SUFFICIENT INTENSITY TO PRODUCE A SPARK DISCHARGE ACROSS THE GAP BETWEEN SAID ELECTRODES, ELECTRICAL CONDUCTING MEANS CONNECTING SAID ELECTRODES AND SAID SOURCE, AND MEANS FOR POSITIONING THE OBJECTS IN THE GAP BETWEEN SAID ELECTRODES, AND ELECTRODES BEING ARRANGED WITH REGARD TO THE SIZE AND CONFIGURATION OF THE OBJECTS TO PROVIDE A NEARLY DIRECT ELECTRON PATH AROUND THE OBJECTS WHEREBY DESIRED PORTIONS OF THE OBJECT SURFACES MAY BE PASSED OVER BY THE SPARK DISCHARGES DURING THE PASSAGE OF THE LATTER ALONG SAID PATH FROM ELECTRODE TO ELECTRODE.
Claim 2
Dependent Claim
124 words
APPARATUS FOR TREATING THE EXTERIOR SURFACES OF PLASTIC OBJECTS TO IMPROVE THEIR ADHERENCY TO AND COMPATIBILITY WITH INKS AND ADHESIVES COMPRISING A PAIR OF ELECTRODES SPACED APART FROM EACH OTHER, MEANS INCLUDING A SOURCE OF ELECTRIC CURRENT OF SUFFICIENT INTENSITY TO PRODUCE A SPARK DISCHARGE ACROSS THE GAP BETWEEN SAID ELECTRODES, ELECTRICAL CONDUCTING MEANS CONNECTING SAID ELECTRODES AND SAID SOURCE, AND MEANS FOR POSITIONING THE OBJECTS IN THE GAP BETWEEN SAID ELECTRODES, AND ELECTRODES BEING ARRANGED WITH REGARD TO THE SIZE AND CONFIGURATION OF THE OBJECTS TO PROVIDE A NEARLY DIRECT ELECTRON PATH AROUND THE OBJECTS WHEREBY DESIRED PORTIONS OF THE OBJECT SURFACES MAY BE PASSED OVER BY THE SPARK DISCHARGES DURING THE PASSAGE OF THE LATTER ALONG SAID PATH FROM ELECTRODE TO ELECTRODE.
References Cited (Backward Citations)
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US3113208A
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US2844731A
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US3021275A
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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) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |