US3274952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railroad track gripping apparatus
Assignee: Mannix International Inc
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Filing: 1964-06-10
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Granted: 1966-09-27
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Expires: 1984-06-10
Abstract
No abstract record available.
Inventors
- 👤 Stephen I Fekete
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:09
CPC Classifications
E; E01; E01B; E01B29/00; E01B29/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
APPARATUS FOR GRIPPING A SECTION OF RAILROAD TRACK, THE RAILS OF WHICH ARE JOINED TOGETHER BY ANGLE BARS, COMPRISING: (A) A PLURALITY OF GROUPS OF RAIL GRIPPING ROLLERS, (B) EACH GROUP COMPRISING A PLURALITY OF ROLLERS WITH AT LEAST ONE SAID ROLLER POSITIONED ON EACH SIDE OF A RAIL STRUCTURE, (C) EACH ROLLER INCLUDING A FLANGE PORTION FOR GRIPPINGLY ENGAGIANG THE UNDERSIDE OF A RAIL HEAD OF SAID RAIL STRUCTURE, (D) EACH GROUP INCLUDING MEANS FOR MOVING SAID ROLLERS BETWEEN A CLOSED, RAIL-EMBRACING CONDITION AND AN OPEN, RAIL-RELEASING CONDITION, (E) SAID MOVING MEANS FOR EACH GROUP BEING OPERABLE INDEPENDENTLY OF THE MOVING MEANS FOR EACH OTHER GROUP, (F) A DETECTION MEANS ASSOCIATED WITH EACH GROUP POSITIONED IMMEDIATELY FORWARDRLY AND REARWARDLY OF EACH GROUP FOR DETECTING AN ANGLE BAR ON SAID RAIL STRUCTURE (G) THE DETECTION MEANS FOR EACH GROUP BEING CONNECTED TO THE ROLLER MOVING MEANS OF THE SAME GROUP TO ACTUATE THE LATTER ON DETENTION OF AN ANGLE BAR TO MOVE THE ROLLERS TO OPEN CONDITION.
Claim 2
Dependent Claim
167 words
APPARATUS FOR GRIPPING A SECTION OF RAILROAD TRACK, THE RAILS OF WHICH ARE JOINED TOGETHER BY ANGLE BARS, COMPRISING: (A) A PLURALITY OF GROUPS OF RAIL GRIPPING ROLLERS, (B) EACH GROUP COMPRISING A PLURALITY OF ROLLERS WITH AT LEAST ONE SAID ROLLER POSITIONED ON EACH SIDE OF A RAIL STRUCTURE, (C) EACH ROLLER INCLUDING A FLANGE PORTION FOR GRIPPINGLY ENGAGIANG THE UNDERSIDE OF A RAIL HEAD OF SAID RAIL STRUCTURE, (D) EACH GROUP INCLUDING MEANS FOR MOVING SAID ROLLERS BETWEEN A CLOSED, RAIL-EMBRACING CONDITION AND AN OPEN, RAIL-RELEASING CONDITION, (E) SAID MOVING MEANS FOR EACH GROUP BEING OPERABLE INDEPENDENTLY OF THE MOVING MEANS FOR EACH OTHER GROUP, (F) A DETECTION MEANS ASSOCIATED WITH EACH GROUP POSITIONED IMMEDIATELY FORWARDRLY AND REARWARDLY OF EACH GROUP FOR DETECTING AN ANGLE BAR ON SAID RAIL STRUCTURE (G) THE DETECTION MEANS FOR EACH GROUP BEING CONNECTED TO THE ROLLER MOVING MEANS OF THE SAME GROUP TO ACTUATE THE LATTER ON DETENTION OF AN ANGLE BAR TO MOVE THE ROLLERS TO OPEN CONDITION.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |