Movable or removable closures – With means mounting closure for reciprocation – Pendant from horizontal guide
Reexamination Certificate
1995-11-03
2002-09-03
Cohen, Curtis A. (Department: 3634)
Movable or removable closures
With means mounting closure for reciprocation
Pendant from horizontal guide
C049S410000
Reexamination Certificate
active
06442900
ABSTRACT:
The present invention relates to a sliding panel, suited to serve as a sliding door or window supportable in horizontal guides in an associated frame, having received within its lower horizontal extent at least one fitting containing a wheel or slide element for horizontal displacement of the sliding panel in a slide position in said horizontal guides. Each wheel is rotatably mounted in its associated fitting about a first axis arranged in a plane transversely of the main plane of the sliding panel. Each fitting is pivotable relative to the sliding panel about a second axis at right angles to the plane of the first axis, and the sliding panel is readjustable about the second axis by lateral displacement of the sliding panel towards and from a support position with support via sealing elements against the frame and against the support panel respectively, by displacement of the sliding panel from and to a stable sliding position at a lateral distance from the frame and the support panel respectively.
By the term “sliding door” shall be understood conventional sliding doors for housing, offices, industrial locations, that is to say doors indoors as well as out-doors but also sliding doors for special purposes, such as fireproof doors, cupboard doors and the like. Correspondingly there shall be understood by the term “sliding window” conventional, vertical, external sliding windows for housing, offices, industrial locations, and the like, but also external, obliquely extending sliding windows for use as roof windows or the like plus internal sliding windows for use in connection with special rooms of different kinds.
It is usual that sliding doors and sliding windows are supported in adjacent guides via wheels and/or slide elements, which can be arranged at the upper end of the sliding panel and/or at its lower end. It is usual to employ rails or similar slide surfaces as guides for controlling the wheels or the slide elements in the intended manner relative to the support panel.
Furthermore it is usual in connection with sliding windows and sliding doors to employ sealing elements in the form of sliding strips for forming a seal between the sliding panel and the support panel. Such sliding strips easily cause great inertia between sliding panel and support panel during displacement of the sliding panel relative to the support panel and can have a tendency to form little effective sealing in the desired sealing position.
A solution according to DE-A-2 941 109 is regarded as the closest prior art in the matter, and comprises a pivot-slide fitting for wheels which supports sliding windows and sliding doors in an outwardly pivoted sliding position or in an inwardly pivoted support position. The pivotal movement takes place on lifting and subsequently lowering the sliding panel about an unstable dead centre from two respective stable-outer positions, which constitute the respective sliding position and support position of the sliding panel. In this connection the plane through the second pivotal axis is coincident with the radial plane through the wheels. In the known solution, the weight of the sliding panel is utilised as the force to ensure the sliding panel in place in opposite outer positions. One is hereby dependent upon a sliding force across the sliding panel in order to be able to accomplish the pivoting from outer position to outer position.
In U.S. Pat. No. 2,570,563 there is shown a similar pivoting about of the sliding panel between stable sliding position and stable support position via an intermediate upper dead centre position.
From U.S. Pat. No. 2,199,182 a solution is known where by means of a sliding arm the pivot pin of the support wheels can be swung about between a position inclined obliquely inwards and a position inclined obliquely outwards for equivalent readjustment of the sliding panel between a stable support position and a stable sliding position. In this case also the sliding panel must be lifted and thereafter lowered about an intermediate dead centre between the two outer positions.
It is an object of the invention to be able to utilise the weight of the sliding panel as a force for readjusting the sliding panel in the one pivotal direction
It is another object of the invention to forcibly guide the sliding panel into place in an unstable support position by way of separate means, so that the sliding panel can be readjusted in an easy manner from unstable support position to stable sliding position by simple means, that is to say by the weight of the sliding panel.
In connection with lifting and lowering of the sliding panel, an aim according to the invention is to make oneself independent of a dead centre between the outer positions of the sliding panel.
According to the invention a special aim is to combine a forcible guiding of the sliding panel with a barring of the sliding panel in the support position, at the same time as there is exerted a controlled clamping between sliding panel and casement via intermediate packings More specifically an aim is to be able to displace the sliding panel relatively unhindered in a released, stable sliding position, while a sealing engagement is activated between sliding panel and support panel via intermediate sealing elements in the intended support and sealing position, in a controlled, accurate, forcibly guided manner.
The sliding panel of the present invention is characterised in that, independently of the respective position of the sliding panel relative to the horizontal guide, the second axis is always laterally offset in a direction which faces away from said frame relative to a central vertical plane through the associated guide, and preferably also relative to a middle radial plane through the associated wheel or slide element. The sliding panel is arranged to attain a sliding position at a lower level than the closed position. Further a manually actuable locking means, which forceably bars the sliding panel in its support position in a weight loaded, unstabilised manner, is arranged to release a combined downwards and sidewise movement of the sliding panel from its upper unstabilised support position towards its lower weight stabilised sliding position. Upon release of the sliding panel from its closed position, the weight of the sliding panel is arranged to be loaded on each of the lower wheels or slide elements through the second axis, causing movement of the sliding panel from the upper closed position to the lower sliding position.
It is possible to allow the support wheels to run obliquely disposed from below and outwards both in the sliding position and in the support position, that is to say inclining in the support position slightly obliquely outwards and in the sliding position inclining more severely obliquely outwards. This can for example be achieved by allowing an axis through the radial central plane of the support wheel to coincide with the second axis. A break point can hereby be ensured between sliding panel and support wheel, that is to say an unstable wheel position in the support position, where the weight of the sliding panel can exert a turning moment towards the wheel in the support position and ensure that the wheel is tilted around about a tilting axis on the associated guide, while the sliding panel is equivalently tilted around about the second axis.
However it is preferred that the central radial plane of the support wheel, in the support position of the slidimg panel, coincides with a vertical plane through the associated guide. In its support position the weight of the sliding panel can hereby be transferred vertically through the support wheels. By locating the second axis laterally displaced relative to the vertical plane through the associated guide, a moment arm between the second axis and the vertical plane through the associated guide will exert a constant turning moment towards the support wheel and ensure that the sliding panel is forcibly guided from support position to sliding position by means of its weight.
According to the invention a relatively simple solutio
Carella, Byrne, etal
Cohen Curtis A.
Hand Francis C.
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