Patent US3224201A successfully refreshed from Google Patents.
US3224201A
Expired / Lapsed
US
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Shoring apparatus
Assignee: Speed Shore Corp
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Filing: 1960-08-11
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Granted: 1965-12-21
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Expires: 1980-08-11
Abstract
No abstract record available.
Inventors
- 👤 James L Brunton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:28
CPC Classifications
E; E02; E02D; E02D17/00; E02D17/06; E02D17/08; E02D17/083
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
258 words
A COLLAPSIBLE SHORING APPARATUS FOR USE IN TRENCH EXCAVATIONS COOMPRISING: FIRST AND SECOND ELONGATE RAILS HAVING EXTERIOR LOAD-SUPPORTING SURFACES AND INTERIOR BEARING SURFACES; A FIRST PLURALITY OF FORCE-TRANSFER BLOCKS HAVING LOAD SURFACES AND HAVING ONE UPPER END AFFIXED TO THE INTERIOR SURFACE SAID FIRST OF SAID RAILS ON A FIRST PIVOTAL AXIS SPACED DOWNWARDLY FROM SAID UPPER END SO THAT EACH OF SAID FIRST BLOCKS IS MOVABLE TO A LIMIT POSITION, THE DISTANCE FROM SAID FIRST PIVOTAL AXIS TO SAID LOAD SURFACE ON SAID FIRST FORCE-TRANSFER BLOCKS BEING EQUAL TO THE DISTANCE FROM SAID FIRST PIVOTAL AXIS TO SAID INTERIOR BEARING SURFACES ON SAID FIRST RAIL WHEN SAID BLOCKS ARE IN SAID LIMIT POSITION WHEREBY SAID LOAD SURFACES OF SAID FIRST BLOCKS ARE EACH IN MATING ENGAGEMENT WITH ONE OF SAID INTERIOR BEARING SURFACES TO THEREBY SUPPORT THE LOAD APPLIED TO SAID FIRST RAIL; A SECOND PLURALITY OF FORCETRANSFER BLOCKS HAVING LOAD SURFACES AND HAVING ONE LOWER END AFFIXED TO SAID SECOND OF SAID RAILS ON A SECOND PIVOTAL AXIS SPACED UPWARDLY FROM SAID LOWER END AND OFF SET FROM SAID PIVOTAL AXIS OF SAID FIRST PLURALITY OF FORCE-TRANSFER BLOCKS SO THAT EACH OF SAID SECOND BLOCKS IS MOVABLE TO A LIMIT POSITION, THE DISTANCE FROM SAID SECOND PIVOTAL AXIS TO SAID LOAD SURFACE ON SAID SECOND FORCE-TRANSFER BLOCKS BEING EQUAL TO THE DISTANCE FROM SAID SECOND PIVOTAL AXIS TO SAID INTERIOR BEARING SURFACES ON SAID SECOND RAIL WHEN SAID BLOCKS ARE IN SAID LIMIT POSITION WHEREBY SAID LOAD SURFACES OF SAID SECOND BLOCKS ARE EACH IN MAT-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |