US3170557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Handrail structure for passenger conveyors
Assignee: Mitsubishi Electric Corp
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Filing: 1961-12-27
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Granted: 1965-02-23
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Expires: 1981-12-27
Abstract
No abstract record available.
Inventors
- 👤 Takenaga Yutaka
- 👤 Makimoto Mitoshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:06
CPC Classifications
B; B66; B66B; B66B23/00; B66B23/02; B66B23/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
IN A MOVING STAIRWAY, A LOWER LANDING AND AN UPPER LANDING, A BALUSTRADE EXTENDING BETWEEN SAID LANDINGS AND HAVING HANDRAIL GUIDE MEANS INCLUDING A LOWER PORTION ADJACENT SAID LOWER LANDING AND AN UPPER PORTION ADJACENT SAID UPPER LANDING, A CONTINUOUS FLEXIBLE HANDRAIL DISPOSED FOR MOVEMENT THROUGH A PREDETERMINED PATH OF TRAVEL, SAID HANDRAIL HAVING A FIRST CONTINUOUS SURFACE FOR RECEPTION OF THE HANDS OF STAIRWAY PASSENGERS AND A SECOND CONTINUOUS SURFACE ENGAGING SAID GUIDE MEANS, SAID HANDRAIL HAVING AN UPPER RUN SUPPORTED BY SAID GUIDE MEANS AND A LOWER RETURN RUN DISPOSED ENTIRELY BENEATH SAID BALUSTRADE, SAID LOWER RUN BEING SUPPORTED SUBSTANTIALLY BY A GUIDE UNIT DISPOSED SUBSTANTIALLY MIDWAY BETWEEN SAID UPPER AND LOWER PORTIONS OF SAID GUIDE MEANS, SAID GUIDE UNIT COMPRISING AN UPPER AND A LOWER GUIDE ELEMENT SPACED IN THE DIRECTION OF MOVEMENT OF SAID UPPER RUN, SAID LOWER RUN HAVING A FIRST SECTION EX-
Claim 2
Dependent Claim
148 words
IN A MOVING STAIRWAY, A LOWER LANDING AND AN UPPER LANDING, A BALUSTRADE EXTENDING BETWEEN SAID LANDINGS AND HAVING HANDRAIL GUIDE MEANS INCLUDING A LOWER PORTION ADJACENT SAID LOWER LANDING AND AN UPPER PORTION ADJACENT SAID UPPER LANDING, A CONTINUOUS FLEXIBLE HANDRAIL DISPOSED FOR MOVEMENT THROUGH A PREDETERMINED PATH OF TRAVEL, SAID HANDRAIL HAVING A FIRST CONTINUOUS SURFACE FOR RECEPTION OF THE HANDS OF STAIRWAY PASSENGERS AND A SECOND CONTINUOUS SURFACE ENGAGING SAID GUIDE MEANS, SAID HANDRAIL HAVING AN UPPER RUN SUPPORTED BY SAID GUIDE MEANS AND A LOWER RETURN RUN DISPOSED ENTIRELY BENEATH SAID BALUSTRADE, SAID LOWER RUN BEING SUPPORTED SUBSTANTIALLY BY A GUIDE UNIT DISPOSED SUBSTANTIALLY MIDWAY BETWEEN SAID UPPER AND LOWER PORTIONS OF SAID GUIDE MEANS, SAID GUIDE UNIT COMPRISING AN UPPER AND A LOWER GUIDE ELEMENT SPACED IN THE DIRECTION OF MOVEMENT OF SAID UPPER RUN, SAID LOWER RUN HAVING A FIRST SECTION EX-
References Cited (Backward Citations)
US1740121A
Cited
US2929483A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |