US3137382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moving sidewalk construction
Assignee: Hewitt Robins Inc
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Filing: 1962-07-12
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Granted: 1964-06-16
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Expires: 1982-07-12
Abstract
No abstract record available.
Inventors
- 👤 Conover Alonzo Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:22
CPC Classifications
B; B66; B66B; B66B29/00; B66B29/02; B66B29/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A MOVING SIDEWALK COMPRISING IN COMBINATION A MOVABLE BELT HAVING A RIBBED SURFACE DEFINING A PLURALITY OF LONGITUDINAL GROOVES, A TAKE-OFF STEP COMPRISING FIXED MEANS OVERLYING SAID BELT, A PLURALITY OF DISCRETE INDEPENDENTLY MOVABLE MEMBERS INTERMEDIATE SAID BELT AND SAID FIXED MEANS, SAID DISCRETE MEMBERS EACH HAVING AT LEAST ONE PROJECTION EXTENDING INTO ONE OF SAID GROOVES, AND MEANS OPERATIVELY ASSOCIATED WITH SAID FIXED MEANS FOR SECURING SAID MEMBERS AGAINST LONGITUDINAL DISPLACEMENT IN A PLANE PARALLEL WITH THE PLANE OF SAID BELT, SAID
Claim 2
Dependent Claim
83 words
A MOVING SIDEWALK COMPRISING IN COMBINATION A MOVABLE BELT HAVING A RIBBED SURFACE DEFINING A PLURALITY OF LONGITUDINAL GROOVES, A TAKE-OFF STEP COMPRISING FIXED MEANS OVERLYING SAID BELT, A PLURALITY OF DISCRETE INDEPENDENTLY MOVABLE MEMBERS INTERMEDIATE SAID BELT AND SAID FIXED MEANS, SAID DISCRETE MEMBERS EACH HAVING AT LEAST ONE PROJECTION EXTENDING INTO ONE OF SAID GROOVES, AND MEANS OPERATIVELY ASSOCIATED WITH SAID FIXED MEANS FOR SECURING SAID MEMBERS AGAINST LONGITUDINAL DISPLACEMENT IN A PLANE PARALLEL WITH THE PLANE OF SAID BELT, SAID
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) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |