Movable or removable closures – Threshold – Adjustable
Patent
1984-06-08
1986-09-02
Kannan, Philip C.
Movable or removable closures
Threshold
Adjustable
52204, 49505, E06B 170
Patent
active
046087818
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a separating device for door cases on floors with different heights, that is, at different levels.
It is common practice to employ the following prior art devices as a separating rail for floors with different heights.
The simplest device in use is a metal strip rail placed edgewise across the door case and cast into the jointless floor. A particular disadvantage of this device is its complete instability, since it cannot be secured exactly on the separating line provided.
A somewhat more stable device is a doorsill that has exactly the shape of the steel sheet door cases of known construction and which is welded horizontally thereacross. The particular drawback of this device lies in the fact that the welding-in by the workmen, in particular tile setters or jointless-floor layers, who actually would have to perform this task during the work cycle, cannot be accomplished with skill. Thus, a welder must be called in.
Another disadvantage common to all prior art devices is that the injection of the moistureproof seal in compliance with DIN regulations is not possible in doors leading to wet rooms.
Therefore, the major object of the invention is to provide a separating device for door cases on floors with different heights in such a way that, particularly if the required moistureproof seal for wet rooms is properly clamped into position, it can be flexibly adapted to height differences between floors at different levels and which is easy to install.
The separating device of the invention enables the proper injection of the moistureproof seal of wet rooms.
The bottom rail member of the separating device has a longer leg with oval, vertical holes therein and screw bolts attached to straps on a door case pass through these holes to secure the bottom rail member to the door case. The top rail member of the separating device has a downwardly extending portion with U-shaped recesses and headless screw bolts pass through threaded holes in the longer leg of the bottom rail member, so that the top part of the separating device can be secured at various heights.
The separating device can be variably installed in a horizontal direction both by the bottom rail member secured to the straps on a door case by means of its oval, vertical holes and the screw bolts, and by the top rail member with its U-shaped recesses and the headless screw bolts passed therethrough, since the oval, vertical holes in the bottom rail member are wider than the diameter of the headless screw bolts, and since the U-shaped recesses are wider than the diameter of the headless screw bolts. As a result, mounting tolerances of the door frame can be compensated.
Another advantage is that, when installing the bottom rail member across the door case, the latter is prevented from being pressed and driven downward until the jointless floor is set onto the unfinished floor, and that on the lower end of the longer leg of the bottom rail member in the direction of the lower floor, straps are provided having threaded holes through which screw bolts are passed until their pointed ends reach the unfinished floor.
Prior to the setting of the jointless floor onto the unfinished floor, these screw bolts must be tightened again to prevent the formation of noise bridges to the unfinished floor. As a result, the bottom ends of the door cases remain perfectly aligned until the jointless floor is installed.
Furthermore, in the top rail member, in the side pointing toward the door leaf, a rearwardly flaring groove may be provided into which a commercially available elastic sealing strip can be inserted to withstand exposure to noise and air.
The separating device can also be used as a separating rail between floors with different heights, none of which is the floor of a wet room, so that no moistureproof seal is present, preferably between the normally higher staircase floor and the lower floor adjacent thereto. In this case, instead of the moistureproof seal an equally thick buffer strip is interposed between the top and the bottom rail members
REFERENCES:
patent: 2837786 (1958-06-01), Fryar, Jr.
patent: 3778931 (1973-12-01), Donaldson
patent: 3967412 (1976-07-01), Governale
patent: 4156325 (1979-05-01), McMullen et al.
patent: 4213275 (1980-07-01), Oehmig
patent: 4224766 (1980-09-01), Procton
patent: 4287684 (1981-09-01), McKann
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