Locks – Parts – attachments – accessories and adjuncts – For key-operated mechanism
Patent
1980-05-19
1982-10-05
Lyddane, William E.
Locks
Parts, attachments, accessories and adjuncts
For key-operated mechanism
70443, 292DIG53, E05B 908
Patent
active
043522793
DESCRIPTION:
BRIEF SUMMARY
The present invention relates generally to a device forming a covering band which can serve as a bracket supporting a lock for doors or flat panels, particularly of glass.
French Pat. No. 76-14.582 published under No. 2,351,234 discloses a device which will permit the fixation of a lock on a glass door without necessitating cutting the door. This device includes a belt of metal or similar material completely surrounding the leaf of the door at lock level, with this belt having at least one break so that it can be tightened around the door leaf, so that it will be held in place by friction. Said belt then has means for mounting of the lock.
The advantages which would result from deletion of the operation of making one or more cuts in such a glass door are obvious; it must also be added that certain safety glasses are very difficult to work and therefore lend themselves poorly to the realization of such cuts.
French Certificate of Addition No. 76-37.267, published under No. 2,373,656, to the aforementioned patent, also describes means which permit the connection of an electric lock which can be mounted on this belt when the door is in any position and which elastically compensates the differences resulting from the angular deflection of the door during its opening.
In practice, such devices must be adapted to doors or panels having very different dimensions. With known means, this necessitates either storage of finished products of various dimensions, with the investment which that entails, or the fabrication or adaptation of the belt for each panel as a function of the dimensions of the door or panel in each case, which very obviously increases the cost of using said belt with doors or panels.
Besides, in order to assure perfect immobilisation of the belt on the door, a certain tightening force will be called for, particularly near the break provided in the belt just for this tightening. In order that these forces be absorbed by the belt, it must have a certain mechanical resistance, thus a certain thickness. Thus, in the case wherein the doors or panels are relatively large or wide, this can result in a relatively heavy belt of increased thickness, with a resulting increased rigidity, which is not favorable where the belt encompasses the edges of the door or panel, points at which on the contrary should be found a better faculty of adaptation of the material to the edge of the glass.
The object of the invention is to provide a solution to the problem which is posed and to allow realization of a device from a small number of standardized pieces, the device adaptable to a very large range of dimensions of doors or glass panels, while also furnishing the necessary properties of lightness and mechanical resistance in the parts which are subjected to the tightening forces.
The invention is manifested in a device forming a covering band which can serve as a bracket supporting a lock for doors or flat panels, particularly of glass, characterized in that it includes two pairs of rigid platens, the platens of each pair being linked by a flexible strap bent in a U-shape, affixed by its edges on each of the platens, said platens also having hooking means, traction clamping elements, adaptable between the platens of the two aforementioned pairs, means to regulate the length of these elements, such that when the platen pairs are fitted on the opposite sides of a door or panel in such a position that the flexible strap uniting the two platens of one pair clamps one of the edges of the door or panel, the elements which are adapted between the platens can be controlled to tighten these flexible straps on these edges, thus affixing the device on the door or panel, and profilings forming slippers, provided on the edges of the platens, and a covering band provided with lateral profilings adapted to the profilings forming slippers on the platens and which can be engaged on said profilings. The traction clamping elements can be elements forming braces or the like.
According to one possible embodiment, the platens present at le
REFERENCES:
patent: 3848908 (1974-11-01), Rich
patent: 4126022 (1978-11-01), Marco
patent: 4139999 (1979-02-01), Allenbawgh
Lebars-Parlebas Solange
Parlebas Gerard G.
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