Patent US4347847A successfully refreshed from Google Patents.
US3148765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous spiral track conveyor
Assignee: White Machine Co Inc
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Filing: 1962-03-02
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Granted: 1964-09-15
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Expires: 1982-03-02
Abstract
No abstract record available.
Inventors
- 👤 Morton A Weiss
- 👤 Bernard S Speckhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:38
CPC Classifications
B; B65; B65G; B65G33/00; B65G33/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A SCREW CONVEYOR FOR TRANSPORTING HANGERS, COMPRISING A STRAIGHT, TUBULAR, THIN-WALLED SHAFT, AND A SMOOTH, CONTINUOUS NARROW HELICAL GROOVE HAMMERED INTO THE PERIPHERY OF SAID SHAFT AND DISPOSED INWARDLY OF THE TUBE WALL SURFACE AND HAVING A DEPTH GREATER THAN THE THICKNESS OF THE TUBULAR WALL AND GREATER THAN THE HEIGHT OF A HANGER TO BE CONTAINED THEREIN AND TRANSPORTED THEREON, SAID GROOVE HAVING A ROUNDED JUNCTURE WITH THE REMAINING SURFACE OF SAID SHAFT, AND HAVING A STRAIGHT SIDE SUBSTANTIALLY VERTICAL WITH RESPECT TO THE AXIS OF SAID SHAFT, AND HAVING A ROUNDED BOTTOM, AND HAVING A SURFACE OF AT LEAST 25% GREATER HARDNESS AND SMOOTHNESS THAN THOSE OF THE REMAINING SURFACE OF SAID SHAFT.
Claim 2
Dependent Claim
115 words
A SCREW CONVEYOR FOR TRANSPORTING HANGERS, COMPRISING A STRAIGHT, TUBULAR, THIN-WALLED SHAFT, AND A SMOOTH, CONTINUOUS NARROW HELICAL GROOVE HAMMERED INTO THE PERIPHERY OF SAID SHAFT AND DISPOSED INWARDLY OF THE TUBE WALL SURFACE AND HAVING A DEPTH GREATER THAN THE THICKNESS OF THE TUBULAR WALL AND GREATER THAN THE HEIGHT OF A HANGER TO BE CONTAINED THEREIN AND TRANSPORTED THEREON, SAID GROOVE HAVING A ROUNDED JUNCTURE WITH THE REMAINING SURFACE OF SAID SHAFT, AND HAVING A STRAIGHT SIDE SUBSTANTIALLY VERTICAL WITH RESPECT TO THE AXIS OF SAID SHAFT, AND HAVING A ROUNDED BOTTOM, AND HAVING A SURFACE OF AT LEAST 25% GREATER HARDNESS AND SMOOTHNESS THAN THOSE OF THE REMAINING SURFACE OF SAID SHAFT.
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) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |