US3236490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete form apparatus
Assignee: SIMPLEX FORMS SYSTEM Inc
•
Filing: 1964-07-23
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Granted: 1966-02-22
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Expires: 1984-07-23
Abstract
No abstract record available.
Inventors
- 👤 Einar C Lovgren
- 👤 Robert G Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:12
CPC Classifications
E; E04; E04G; E04G17/00; E04G17/06; E04G17/075; E04G17/0751; E04G17/0754
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
IN A CONCRETE FORM STRUCTURE OF THE TYPE WHEREIN A PLURALITY OF FORM SECTIONS ARE POSITIONED AND CONNECTED TOGETHER EDGE TO EDGE TO FORM ONE WALL AND A PLURALITY OF FORM SECTIONS ARE CONNECTED TOGETHER EDGE TO EDGE TO FORM A SECOND WALL IN JUXTAPOSITION THERETO, WITH TIE MEMBERS EXTENDING BETWEEN THE WALLS AT THE JOINTS BETWEEN SECTIONS, AND WITH EACH SECTION HAVING A GENERALLY HORIZONTAL BAR WITH A LOCKING LEVER PIVOTALLY CONNECTED ADJACENT ONE END OF THE BAR AND ADAPTED TO HOLD THE TIE AND TO RELEASABLY CONNECT THE SECTION TO THE ADJACENT SECTION, THE IMPROVEMENT COMPRISING: SAID LOCKING LEVER HAVING TWO ARMS ANGULARLY POSITIONED WITH RESPECT TO EACH OTHER WITH THE INCLUDED ANGLE BETWEEN THE ARMS BEING SUBSTANTIALLY LESS THAN 180 DEGREES, EACH ARM HAVING, WITH RESPECT TO ONE DIRECTION OF ROTATION, A FORWARD EDGE AND A REARWARD EDGE, ONE ARM HAVING SLOTTED ENGAGING MEANS IN ITS FORWARD EDGE, THE OTHER ARM HAVING SLOTTED ENGAGING MEANS IN ITS REARWARD EDGE.
Claim 2
Dependent Claim
162 words
IN A CONCRETE FORM STRUCTURE OF THE TYPE WHEREIN A PLURALITY OF FORM SECTIONS ARE POSITIONED AND CONNECTED TOGETHER EDGE TO EDGE TO FORM ONE WALL AND A PLURALITY OF FORM SECTIONS ARE CONNECTED TOGETHER EDGE TO EDGE TO FORM A SECOND WALL IN JUXTAPOSITION THERETO, WITH TIE MEMBERS EXTENDING BETWEEN THE WALLS AT THE JOINTS BETWEEN SECTIONS, AND WITH EACH SECTION HAVING A GENERALLY HORIZONTAL BAR WITH A LOCKING LEVER PIVOTALLY CONNECTED ADJACENT ONE END OF THE BAR AND ADAPTED TO HOLD THE TIE AND TO RELEASABLY CONNECT THE SECTION TO THE ADJACENT SECTION, THE IMPROVEMENT COMPRISING: SAID LOCKING LEVER HAVING TWO ARMS ANGULARLY POSITIONED WITH RESPECT TO EACH OTHER WITH THE INCLUDED ANGLE BETWEEN THE ARMS BEING SUBSTANTIALLY LESS THAN 180 DEGREES, EACH ARM HAVING, WITH RESPECT TO ONE DIRECTION OF ROTATION, A FORWARD EDGE AND A REARWARD EDGE, ONE ARM HAVING SLOTTED ENGAGING MEANS IN ITS FORWARD EDGE, THE OTHER ARM HAVING SLOTTED ENGAGING MEANS IN ITS REARWARD EDGE.
References Cited (Backward Citations)
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US2898659A
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US2920371A
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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) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |