US3406429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermo-plastic molding machine with floating screw spreader
Assignee: Individual
•
Filing: 1966-05-19
•
Granted: 1968-10-22
•
Expires: 1986-05-19
Abstract
No abstract record available.
Inventors
- 👤 Donald A Draudt
- 👤 Herbert T Draudt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 00:42
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/46; B29C45/47; B29C45/50; B29C45/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
APPARATUS FOR INJECTING PLASTIC MATERIAL INTO A MOLD COMPRISING A PLASTICIZING CYLINDER HAVING A BORE WITH A REARWARD FEED END AND A FORWARD OUTLET END, A ROTATABLE MEMBER MOUNTED FOR FREE AXIAL MOVEMENT AND HAVING A SCREW PORTION ADAPTED TO WORK PLASTIC MATERIAL IN SAID BORE, MEANS FOR TURNING SAID ROTATABLE MEMBER IN A MANNER TENDING TO SCREW SAID MEMBER AXIALLY REARWARDLY THROUGH SAID MATERIAL IN SAID BORE, A PLUNGER MOUNTED FOR RECIPROCATING MOVEMENT RELATIVE TO SAID BORE AND SAID MEMBER, ADJACENT THE FEED END OF SAID BORE, AND ADAPTED TO PUSH PLASTIC MATERIAL FORWARDLY IN S AID BORE AND INDUCE SAID SCREW PORTION TO MOVE FORWARDLY WITH SAID MATERIAL
Claim 2
Dependent Claim
110 words
APPARATUS FOR INJECTING PLASTIC MATERIAL INTO A MOLD COMPRISING A PLASTICIZING CYLINDER HAVING A BORE WITH A REARWARD FEED END AND A FORWARD OUTLET END, A ROTATABLE MEMBER MOUNTED FOR FREE AXIAL MOVEMENT AND HAVING A SCREW PORTION ADAPTED TO WORK PLASTIC MATERIAL IN SAID BORE, MEANS FOR TURNING SAID ROTATABLE MEMBER IN A MANNER TENDING TO SCREW SAID MEMBER AXIALLY REARWARDLY THROUGH SAID MATERIAL IN SAID BORE, A PLUNGER MOUNTED FOR RECIPROCATING MOVEMENT RELATIVE TO SAID BORE AND SAID MEMBER, ADJACENT THE FEED END OF SAID BORE, AND ADAPTED TO PUSH PLASTIC MATERIAL FORWARDLY IN S AID BORE AND INDUCE SAID SCREW PORTION TO MOVE FORWARDLY WITH SAID MATERIAL
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-22 | 1972-04-22 | 1972-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-22 | 1976-04-22 | 1976-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-22 | 1980-04-22 | 1980-10-22 | $7700.00 | Window Closed / Lapsed |