Static structures (e.g. – buildings) – Veneer tiles held by nonload-bearing grid – Integral projections on backer
Patent
1995-02-21
1998-03-17
Safavi, Michael
Static structures (e.g., buildings)
Veneer tiles held by nonload-bearing grid
Integral projections on backer
524031, 52480, 52512, E04F 1308, E04F 1522
Patent
active
057273545
DESCRIPTION:
BRIEF SUMMARY
The present invention concerns a fastening system for the assembly of juxtaposed and parallel laths, made of wood and whose upper surface is prevarnished, in order to line a surface, such as a floor or wall. Each lath has a tenon and a mortise, each of which is placed on one of its longitudinal sides. During the installation, the laths are arranged so that their tenon fits together with the mortise of an adjacent lath.
The most widely used conventional method for installing a wood lining consists of attaching the boards directly to the subfloor using nails or clasps which are inserted in the subfloor with pneumatic hammers. These nails or clasps firmly secure the laths to the subfloor, but as a result of their passage through the wood, which is relatively dry, they produce slight imperfections which are perceptible on the surface of the laths. Moreover, the nails and clasps occasionally cause the wood to split up to the surface. The laths thereby damaged become unusable.
The conventional installation method does not assure a perfect alignment of the laths with the subfloor. Several factors may actually vary the lath alignment with one another if, for example, a board which is narrower than the others is installed in the middle of a row or one of the laths is cambered. The laths may also show among themselves a slight angular deviation, which produces rounded rows, more particularly noticeable if the surface is large.
The conventional fastener method generates flaws which often make the floor unattractive. Moreover, it is very difficult to remove laths without damaging them and quite often, the laths must be broken up to be removed. It is therefore not possible for someone to have a lath board installed and removed when this person moves away or if the floor is installed only temporarily, for an exhibit, for example.
Floor laths installed in a traditional manner may push against one another under the effect of humidity and thereby create large gaps in certain areas due to shrinkage in drying.
When the floor is worn and must be sanded and varnished, it is not possible to remove it to perform these operations elsewhere; the sanding and varnishing must be performed on site with all the drawbacks that this entails, both for the occupants and for the workers. The sanding and varnishing operations of a wood floor in a home or commercial building often require the occupants to leave the premises during the repair operations which may last several days. During this period, the sanding generates a fine dust which spreads everywhere and which will require the entire home or building to be cleaned. Moreover, the machines used for sanding may damage the floor permanently if they are not properly used, and therefore require qualified labor. As for varnishes and other finishing products, most release harmful, sometimes explosive solvent fumes, and very strong odors which are harmful to the health of the workers and which contaminate the air of the home or building. The drying and hardening times of the varnish prolong accordingly the period of unavailability of the rooms involved.
In order to resolve the drawbacks of the sanding and varnishing of the laths on the site itself where they are used, prevarnished laths are commercially available and these may be returned to the factory when they are worn in order to be sanded and revarnished. The factory, with the appropriate equipment, allows all of these operations to be performed without affecting the health of the workers. Moreover, the solvent fumes may be filtered.
Among the solutions proposed for removing the laths without damaging them, we find, for example, the systems described in the following patents: U.S. Pat. Nos. 1,968,798, 2,004,917, CA-A-898 480, CA-A-903 436, CA-A-965 569 and CA-A-1 165 088. These systems propose attachments, of various forms, sliding in parallel rails in order to secure the cross laths without damaging them. The user must remove the mobile attachments in order to remove the wood laths. These systems offer nothing regarding the synchronizati
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Safavi Michael
Triangle Pacific Corp.
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