Nested packaging trays produced by a rotary pulp molding machine having different sets of molding dies
Abstract
Abstract Apparatus for producing stack of nested articles comprises first and second sets of plural molding dies mounted in alternating fashion for shifting motion along an endless path past an article molding station. The first and second sets of plural molding dies have anti-jamming steps which are different in location from one another. Mechanical stacker places molded articles in nested fashion one above other in order articles are delivered to stacker. Article handling structure transfers articles from molding dies to stacker in same order articles are formed. Mechanical stacker produces stack of nested articles with every even numbered article therein having been molded on first set of molding dies and every odd numbered article having been molded on second set of molding dies.
Inventors
- 👤 Wilfred E Hatch
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1975-04-04 | 1975-10-04 | 1976-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-04 | 1979-10-04 | 1980-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-04 | 1983-10-04 | 1984-04-04 | $7700.00 | Window Closed / Lapsed |