Patent US3021248A successfully refreshed from Google Patents.
US3021248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio-frequency edge-gluing process
Assignee: Individual
•
Filing: 1955-04-04
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Granted: 1962-02-13
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Expires: 1975-04-04
Abstract
No abstract record available.
Inventors
- 👤 Julius W Mann
- 👤 George F Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:42
CPC Classifications
B; B27; B27G; B27G11/00; B27G11/02; B27D; B27D1/00; B27D1/02; B27D1/025; B27D1/10; Y; Y10; Y10T; Y10T156/00; Y10T156/17; Y10T156/1702; Y10T156/1744; Y10T156/1749
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
IN A CONTINUOUS METHOD OF BONDING DIELECTRIC MATERIALS LYING IN A SINGLE LAYER AND IN ABUTTING RELATION WITH ADHESIVE THEREBETWEEN; WHICH COMPRISES THE STEPS: ESTABLISHING A HIGH-FREQUENCY FIELD OF FORCE WITH AT LEAST ONE ZERO VOLTAGE GRADIENT EXTENDING ALONG A PATH IN THE FIELD; CONTINUOUSLY MOVING THE PIECES OF DIELECTRIC MATERIAL THROUGH THE FIELD WHILE MAINING ADJACENT PIECES IN CONTACT WITH EACH OTHER AND IN A SINGLE FLAT PLANE; AND IN APPLYING PRESSURE FROM OPPOSITE SURFACES OF THE PIECES FOR HOLDING THE PIECES IN A FLAT PLANE WHILE STILL PERMITTING THEM TO MOVE CONTINUOUSLY, THE PRESSURE ON THE SURFACES BEING AT POINTS ALONG THE PATH OF THE ZERO VOLTAGE GRADIENT.
Claim 2
Dependent Claim
110 words
IN A CONTINUOUS METHOD OF BONDING DIELECTRIC MATERIALS LYING IN A SINGLE LAYER AND IN ABUTTING RELATION WITH ADHESIVE THEREBETWEEN; WHICH COMPRISES THE STEPS: ESTABLISHING A HIGH-FREQUENCY FIELD OF FORCE WITH AT LEAST ONE ZERO VOLTAGE GRADIENT EXTENDING ALONG A PATH IN THE FIELD; CONTINUOUSLY MOVING THE PIECES OF DIELECTRIC MATERIAL THROUGH THE FIELD WHILE MAINING ADJACENT PIECES IN CONTACT WITH EACH OTHER AND IN A SINGLE FLAT PLANE; AND IN APPLYING PRESSURE FROM OPPOSITE SURFACES OF THE PIECES FOR HOLDING THE PIECES IN A FLAT PLANE WHILE STILL PERMITTING THEM TO MOVE CONTINUOUSLY, THE PRESSURE ON THE SURFACES BEING AT POINTS ALONG THE PATH OF THE ZERO VOLTAGE GRADIENT.
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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) | 1965-02-12 | 1965-08-14 | 1966-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-12 | 1969-08-14 | 1970-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-12 | 1973-08-14 | 1974-02-13 | $7700.00 | Window Closed / Lapsed |