US3224065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for building a hollow core structure
Assignee: Individual
•
Filing: 1965-04-22
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Granted: 1965-12-21
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Expires: 1985-04-22
Abstract
No abstract record available.
Inventors
- 👤 David B Cheskin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:30
CPC Classifications
E; E04; E04G; E04G11/00; E04G11/06; E04G11/20; E04G11/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
198 words
APPARATUS FOR INCREMENTALLY CONSTRUCTING A CONTINUOUS VERTICALLY ELONGATED REINFORCED CONCRETE HOLLOW CORE STRUCTURE, WHICH COMPRISES IN COMBINATION, A SECTIONALIZED SUBSTANTIALLY OPEN-TOPPED FORM SECTION HAVING OPPOSED SPACED WALL PORTIONS WHICH MAY BE SPRUNG APART AND FOR FORMING CONCRETE WALL SECTIONS, AND WITH PERIPHERALLY ADJACENT SECTIONS OF SAID FORM SECTION EFFECTING A RING-LIKE FORM FOR THE POURING OF CONCRETE IN A CONTINUOUS WALL SECTION, OPPOSING SPACED SMALL OPENINGS ALONG THE LOWER EDGE PORTIONS OF SAID WALL PORTIONS ADAPTED TO ACCOMMODATE REMOVABLE BOLT MEMBERS, REMOVABLE TUBULAR SUPPORTSPACER MEMBERS OF A LENGTH EQUIVALENT TO THE THICKNESS OF SAID WALL SECTIONS AND SIZED TO ENCOMPASS SAID REMOVABLE BOLT MEMBERS, VERTICALLY SPACED WALL SLOTS BETWEEN ADJACENT SECTIONS OF SAID FORM SECTION PROVIDING SECTIONALIZED WALL PORTIONS THEREFOR AND PERMITTING THE SPRINGING APART OF THE WALL PORTIONS UPON THE RELEASE OF SAID BOLT MEANS AS CLAMPING MEANS AT THE LOWER END OF SAID FORM SECTION, WORKING PLATFORM MEANS EXTENDING BETWEEN SECTIONALIZED WALL PORTIONS OF SAID FORM SECTON AND SUSPENDED THEREFROM SUCH THAT AS SAID FORM SECTION IS NCREMENTALLY ELEVATED THEREI S A LIFTING OF SAID PLATFORM MEANS, LOCKINGGUIDE MEANS PROJECTABLE FROM AT LEAST ONE PAIR OF OPPOSING EDGE PORTIONS OF SAID PLATFORM MEANS, LEVER ARM OPERATED
Claim 2
Dependent Claim
198 words
APPARATUS FOR INCREMENTALLY CONSTRUCTING A CONTINUOUS VERTICALLY ELONGATED REINFORCED CONCRETE HOLLOW CORE STRUCTURE, WHICH COMPRISES IN COMBINATION, A SECTIONALIZED SUBSTANTIALLY OPEN-TOPPED FORM SECTION HAVING OPPOSED SPACED WALL PORTIONS WHICH MAY BE SPRUNG APART AND FOR FORMING CONCRETE WALL SECTIONS, AND WITH PERIPHERALLY ADJACENT SECTIONS OF SAID FORM SECTION EFFECTING A RING-LIKE FORM FOR THE POURING OF CONCRETE IN A CONTINUOUS WALL SECTION, OPPOSING SPACED SMALL OPENINGS ALONG THE LOWER EDGE PORTIONS OF SAID WALL PORTIONS ADAPTED TO ACCOMMODATE REMOVABLE BOLT MEMBERS, REMOVABLE TUBULAR SUPPORTSPACER MEMBERS OF A LENGTH EQUIVALENT TO THE THICKNESS OF SAID WALL SECTIONS AND SIZED TO ENCOMPASS SAID REMOVABLE BOLT MEMBERS, VERTICALLY SPACED WALL SLOTS BETWEEN ADJACENT SECTIONS OF SAID FORM SECTION PROVIDING SECTIONALIZED WALL PORTIONS THEREFOR AND PERMITTING THE SPRINGING APART OF THE WALL PORTIONS UPON THE RELEASE OF SAID BOLT MEANS AS CLAMPING MEANS AT THE LOWER END OF SAID FORM SECTION, WORKING PLATFORM MEANS EXTENDING BETWEEN SECTIONALIZED WALL PORTIONS OF SAID FORM SECTON AND SUSPENDED THEREFROM SUCH THAT AS SAID FORM SECTION IS NCREMENTALLY ELEVATED THEREI S A LIFTING OF SAID PLATFORM MEANS, LOCKINGGUIDE MEANS PROJECTABLE FROM AT LEAST ONE PAIR OF OPPOSING EDGE PORTIONS OF SAID PLATFORM MEANS, LEVER ARM OPERATED
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) | 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 |