Patent US837732A successfully refreshed from Google Patents.
Patent US4033548A successfully refreshed from Google Patents.
US4033548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete shuttering connecting means
Assignee: Individual
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Filing: 1975-05-12
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Granted: 1977-07-05
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Expires: 1995-05-12
Abstract
Abstract Shuttering elements, for assembly as casting moulds in which concrete structures are cast, are composed of planks or panels which are made with undercut grooves extending near an edge of the respective plank or panel, profiled rails being provided which are fittingly slid into the grooves of two planks or panels thereby firmly connecting these two planks or panels.
Inventors
- 👤 Moshe Shahar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:06
CPC Classifications
E; E04; E04G; E04G9/00; E04G9/02; E04G11/00; E04G11/06; E04G11/08; E04G11/10; E04G17/00; E04G17/001; E04G17/06; E04G17/075; E04G17/0751; E04G17/0752
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
213 words
A set of elements for the assembly of casting molds, comprising: a plurality of planks each having a casting surface, an opposite surface and two edges, and adapted to be joined together adjacent one another to form a portion of a casting mold, with a second edge of a first plank being joined adjacent to a first edge of a second plank; the casting surface of each of said planks being adapted to have cast thereagainst a fluent castable material for hardening thereagainst and from which said planks can be readily stripped; each of said planks being provided with two grooves on its opposite surface, each of said two grooves being located adjacent a respective one of the two edges of each plank, each of said two grooves having an undercut dove-tail side closest to the respective edge to which it is adjacent; and means to join two said planks to one another to define a portion of a casting mold, said joining means comprising a pair of profiled rails, each of said rails having a tongue complementary in shape to the grooves in said planks, and connector means to tighten said rails together when the tongues of said rails interlock with the grooves of said planks to tightly hold said planks together.
Claim 2
Dependent Claim
213 words
A set of elements for the assembly of casting molds, comprising: a plurality of planks each having a casting surface, an opposite surface and two edges, and adapted to be joined together adjacent one another to form a portion of a casting mold, with a second edge of a first plank being joined adjacent to a first edge of a second plank; the casting surface of each of said planks being adapted to have cast thereagainst a fluent castable material for hardening thereagainst and from which said planks can be readily stripped; each of said planks being provided with two grooves on its opposite surface, each of said two grooves being located adjacent a respective one of the two edges of each plank, each of said two grooves having an undercut dove-tail side closest to the respective edge to which it is adjacent; and means to join two said planks to one another to define a portion of a casting mold, said joining means comprising a pair of profiled rails, each of said rails having a tongue complementary in shape to the grooves in said planks, and connector means to tighten said rails together when the tongues of said rails interlock with the grooves of said planks to tightly hold said planks together.
Claim 3
Dependent Claim
18 words
A set of elements in accordance with claim 1 wherein said casting surface of said planks is ornamented.
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) | 1980-07-04 | 1981-01-03 | 1981-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-04 | 1985-01-03 | 1985-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-04 | 1989-01-03 | 1989-07-05 | $7700.00 | Window Closed / Lapsed |