Automatic plastic welding machine
Abstract
Abstract AN AUTOMATIC MACHINE IS PROVIDED FOR FORMALLY BUTT WELDING TO THERMOPLASTIC WORK MEMBERS, SUCH AS PLASTIC SHEETS. THE MACHINE HAS A FRAME MOUNTING RELATIVELY MOVABLE HORIZONTAL WORK TABLES TO WHICH ARE CLAMPED THE WORK MEMBERS TO BE JOINED, A HEATER BLADE WHICH MOVES VERTICALLY BETWEEN THE TABLES, AND AN AUTOMATIC CONTROL SYSTEM WHICH IS OPERABLE TO CAUSE THE MACHINE TO PROCEED THROUGH AN AUTOMATIC WORK CYCLE INVOLVING INITIAL RETRACTION OF THE WORK TABLES TO SEPARATE THE WORK MEMBERS, HEATING OF THE BLADE TO A PREDETERMINED TEMPERATURE, MOVEMENT OF THE HEATED BLADE TO AN EXTEND POSITION BETWEEN THE WORK MEMBERS, INWARD EXTENSION OF THE WORK TABLES TOWARD ONE ANOTHER TO ENGAGE THE CONFRONTING EDGE SURFACES OF THE WORK MEMBERS WITH OPPOSITE SIDES OF THE BLADE, WHEREBY THESE EDGE SURFACES ARE HEATED TO A TACKY STATE, MOMENTARY RETRACTION OF THE WORK TABLES TO SEPARATE THE WORK MEMBERS, RETRACTION OF THE HEATER BLADE FROM BETWEEN THE WORK MEMBERS, AND FINAL INWARD EXTENSION OF THE WORK TABLES TO PRESS THE TACKY SURFACES OF THE WORK MEMBERS FIRMLY TOGETHER FOR A PERIOD OF TIME SUFFICIENT TO ENABLE FIRM BONDING OF THE MEMBERS TO ONE ANOTHER.
Inventors
- 👤 Chester Wilkins
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |