Patent US3587930A successfully refreshed from Google Patents.
US3587930A
Expired / Lapsed
US
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Apparatus for dispensing thermoplastic material
Assignee: Industrial Shoe Machinery Corp
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Filing: 1969-07-29
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Granted: 1971-06-28
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Expires: 1989-07-29
Abstract
Abstract THERMOPLASTIC RESINS ARE FED TO A DESIRED LOCATION BY AN APPARATUS HAVING A WELL WITH A HEATED INNER SECTION, PROVIDED WITH A DISCHARGE ORIFICE, AND AN UNHEATED OUTER SECTION. A FITTED, NORMALLY SOLID MEMBER OF THERMOPLASTIC MATERIAL IS PLACED IN THE WELL WHEREUPON ONLY ITS BOTTOM PORTION BECOMES MOLTEN. CONTINUOUS FLUID PRESSURE IS APPLIED ON THE EXPOSED SOLID END OF THRMOPLASTIC MATERIAL AND IN CONJUNCTION WITH AN EXTERNALLY CONTROLLED VALVE PROVIDES CONTROLLABLE FEED, YET PROTECTS THE THERMOPLASTIC MATERIAL FROM OXIDATIVE DEGRADATION. ONE EMBODIMENT OF THE INVENTION COMPRISES A PORTABLE CEMENT GUN.
Inventors
- 👤 George Schultz
- 👤 Michael Dziki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:32
CPC Classifications
B; B05; B05C; B05C17/00; B05C17/005; B05C17/00523; B05C17/0054; B05C17/00543
Claims Analysis
Total Claims: 0
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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) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |