Patent US2692303A successfully refreshed from Google Patents.
US3178012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous spiral track conveyor
Assignee: White Machine Co Inc
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Filing: 1962-11-19
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Granted: 1965-04-13
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Expires: 1982-11-19
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 04:26
CPC Classifications
B; B65; B65G; B65G33/00; B65G33/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A CURVED SECTION FOR A STRIAGHT TUBULAR SCREW CONVEYOR FOR TRANSPORTING LOAD HANGERS, COMPRISING, A SERIES OF AXIALLY-CONNECTED SHORT, SPACED CYLINDRICAL SECTIONS, EACH CARRYING A PORTION OF A NARROW CONTINUOUS LOAD-CARRYING SCREW GROOVE DISPOSED INWARDLY OF THE CYLINDRICAL WALL SURFACE, A SERIES OF AXIALLY-DISPOSED TEETH EXTENDING FROM THE PERIPHERY AT EACH OF SAID SECTIONS AND DESIGNED TO MESH WITH AND TO SEPARABLE AXIALLY FROM OPPOSITELY-DIRECTED SIMILAR TEETH OF ADJACENT SECTIONS, AND A FLEXIBLE LOAD-CARRYING CABLE PASSING THROUGH AND FITTING SNUGLY IN SAID SERIES OF CYLINDRICAL SECTIONS AND DESIGNED TO HOLD TOGETHER SAID SECTIONS AND HAVING ENDS FOR ANCHORING WITHIN ENDS OF A STRAIGHT CONVEYOR.
Claim 2
Dependent Claim
104 words
A CURVED SECTION FOR A STRIAGHT TUBULAR SCREW CONVEYOR FOR TRANSPORTING LOAD HANGERS, COMPRISING, A SERIES OF AXIALLY-CONNECTED SHORT, SPACED CYLINDRICAL SECTIONS, EACH CARRYING A PORTION OF A NARROW CONTINUOUS LOAD-CARRYING SCREW GROOVE DISPOSED INWARDLY OF THE CYLINDRICAL WALL SURFACE, A SERIES OF AXIALLY-DISPOSED TEETH EXTENDING FROM THE PERIPHERY AT EACH OF SAID SECTIONS AND DESIGNED TO MESH WITH AND TO SEPARABLE AXIALLY FROM OPPOSITELY-DIRECTED SIMILAR TEETH OF ADJACENT SECTIONS, AND A FLEXIBLE LOAD-CARRYING CABLE PASSING THROUGH AND FITTING SNUGLY IN SAID SERIES OF CYLINDRICAL SECTIONS AND DESIGNED TO HOLD TOGETHER SAID SECTIONS AND HAVING ENDS FOR ANCHORING WITHIN ENDS OF A STRAIGHT CONVEYOR.
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) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |