US3759770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction welding machine loading and holding apparatus
Assignee: Packaging Resources Inc
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Filing: 1971-07-06
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Granted: 1973-09-18
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Expires: 1991-07-06
Abstract
Abstract Friction welding machinery for joining thermoplastic container top and bottom parts which are moved continuously along a production line. Star wheel loading and unloading members incorporate suction pads for gripping the parts as they move to the holders where flutes, in at least some of the holders, communicate suction chambers in the holders with a vacuum source, an also hold the parts during the friction welding operation.
Inventors
- 👤 G Brown
- 👤 G Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:27
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/50; B29C66/51; B29C66/54; B29C65/00; B29C65/02; B29C65/06; B29C65/0672; B29C65/069; B29C65/78; B29C65/7841; B29C65/7844; B29C65/7847; B29C65/7858; B29C65/7879; B29C65/7882; B29C65/7885; B29C66/70; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/83; B29C66/832; B29C66/8322; B29C66/53; B29C66/534; B29C66/5344
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |