Static structures (e.g. – buildings) – Facers; e.g. – modules – mutually bonded by internal settable... – Section filling hollow or channel module
Patent
1991-04-12
1993-06-08
Aftergut, Karen
Static structures (e.g., buildings)
Facers; e.g., modules, mutually bonded by internal settable...
Section filling hollow or channel module
5230915, 5230917, 52588, 249 18, 249173, 264 32, 264 35, 264263, 264269, 405267, 428 33, 428 369, 428 99, E04B 116, E04B 200, E04C 330, F16B 507
Patent
active
052168638
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a formwork comprising a plurality of interconnectable formwork elements for the casting of especially walls and similar constructions, and otherwise of the kind that are substantially cylindrically-formed, thin-walled, self-supporting and preferably flexible. The invention also involves a method for the use of said formwork elements, and in particular to method for the casting of walls and similar constructions using the formwork.
Casting of e.g. foundations, sustaining walls, walls, pavement or roof in concrete or similar hardenable filling materials by means of formwork elements in the form of wooden panels is laborious and time-consuming. Such formwork panels are heavy and awkward; they have to be transported on crane vehicle and require binders, the necessary working operations comprising carrying, erecting, removal, oiling (lubrication) and storage of the panels.
Likewise, finished brick blocks and elements require much treatment in factory, costly transport, laborious erecting and comprehensive after-treatment.
The prior art comprises also Norwegian patent specification No. 46,428, DE-OS 2,213,358, DE-AS 1,684,357, U.S. Pat. No. 2,184,714, DE, C2, 3 234 489, DE, A1, 3 727 956, WO, A1, 82/04088, DE, A, 1 812 590, DE, C2, 3 003 446, SE, 206 538 as well as FR-A-1 603 005.
NO-PS 46,428 relates to a pile blanking consisting of hollow interconnectable sections. Substantially as a result of the design of the connecting means of this known pile blanking, the pile blanking will--used as a formwork--only be usable for the casting of spaced columns; on the other hand it will not enable casting of a continuous wall, or permit reinforcing using horizontal and/or diagonally extending reinforcing rods. However, between adjacent sections or elements it is from this patent specification known per se to use mutually cooperating coupling means adapted to be brought into firmly maintaining engagement with each other.
DE-OS 2,213,358 relates to a flexible, reinforced formwork cloth which is not self-supporting, but has to be used in combination with suitable walls of timber placed endwise and, thus, exhibiting substantially the same disadvantages as panel formworks.
DE-AS 1,684,357 relates also to a flexible, reinforced, not self-supporting formwork cloth divided into interconnectable sections, which can be connected mutually by means of connecting means adapted to be brought into firmly maintaining engagement with each other. This prior art formwork system does not permit casting of continuous walls and, moreover, prohibits the arrangement of crossing reinforcing rods.
U.S. Pat. No. 2,184,714 does not relate to formwork, but concerns casted pre-reinforced concrete elements. When such concrete elements or blocks are being used for building purposes, locking rods are used for keeping adjacent concrete blocks in place in the finished construction.
DE, C2, 3 234 489. This prior art structure and that of the above-mentioned Norwegian patent specification No. 46 428 resemble each other in many respects. In the embodiments shown, this construction is not suitable to be used as a formwork.
DE, A1, 3 727 956 discloses formwork elements made of light (weight) concrete and adapted to be glued together. In many respects these prior art elements, though elongated, resemble the well known concrete blocks previously discussed.
WO, A1, 82/04088 discloses methods for the building of constructions and comprises a "stay-in-place" formwork for concrete casting. The formwork elements are not self-supporting, and the erected formwork structure constitutes, in fact, a conventional thick-walled formwork requiring the use of i.e. ordinary binders.
DE, A, 1 812 590 discloses building elements; the entire formwork structure requiring elements of several different shapes. These differently shaped elements are to be kept together by tensioning means, thereby involving the use of a rather large number of loose parts.
DE, C2, 3 003 446 discloses formwork elements of the block type previously discu
REFERENCES:
patent: 1244608 (1917-10-01), Hicks
patent: 1715466 (1929-06-01), Miller
patent: 2008162 (1935-07-01), Waddell
patent: 2892340 (1959-06-01), Fort
patent: 3100677 (1963-08-01), Frank et al.
patent: 3588027 (1971-06-01), Bowden
patent: 3788020 (1974-01-01), Gregori
patent: 4553875 (1985-11-01), Casey
patent: 4731971 (1988-03-01), Terkl
patent: 5014480 (1991-05-01), Guarriello et al.
Nessa Nils
Pettersen Dag
LandOfFree
Formwork comprising a plurality of interconnectable formwork ele does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Formwork comprising a plurality of interconnectable formwork ele, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Formwork comprising a plurality of interconnectable formwork ele will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1926647