Movable or removable closures – With means mounting closure for reciprocation – Pendant from horizontal guide
Reexamination Certificate
1999-12-09
2001-10-16
Redman, Jerry (Department: 3634)
Movable or removable closures
With means mounting closure for reciprocation
Pendant from horizontal guide
C049S127000, C160S196100
Reexamination Certificate
active
06301833
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a clamping device for panel-like elements portable along a top and bottom guide rail, said elements being fitted with guide means mounted on the top and bottom edge of an element, said guide rails being provided with an element pivoting point, at which the element is pivotable relative to a pivot spindle constituted by a guide means on the top edge of the element and a guide means on the bottom edge of the element, at least one of the guide means, which constitute the pivot spindle, being adapted to set in a clamped position in the guide rail as the element is pivoted relative to said pivot spindle.
The above type of structures are used e.g. in balcony glass panels, whereby, if desired, the glass panels can be turned aside one by one and pivoted e.g. through 90° relative to a vertical pivot spindle.
In one such prior known system, the pivot spindle has a flattened portion which enters into a guide slot provided with circular extensions (
FIGS. 2
a
,
2
b
). Thus, when turning a panel-like element for pivoting the spindle at an extension, the spindle is no longer capable of moving forward or backward. If, for example, due to structural tolerances, the spindle and its flattened portion are not completely within the circular extension when turning a panel-like element, a corner of the flattened portion collides with the guide edge. In order to avoid the collision in all circumstances, it is necessary to use a sufficiently loose clearance. However, the result of this is an unsteady structure.
SUMMARY OF THE INVENTION
An object of the invention is to provide a clamping device, the collision with one another of its components being prevented in all circumstances and the operation of said clamping device being nevertheless precise and without backlash.
According to the invention, this object has been achieved and a clamping device of the invention is characterized in that the guide means adapted to clamp in place includes a locking member with a circular-segment shaped cross-section, adapted to be non-rotatable relative to the element and having a straight portion which is aligned essentially in parallel with the guide rails as the element travels along the guide rails, that, for the locking member, the element pivoting point is fitted with a guide, having one of its parallel flanks facing each other provided with a circular-arc shaped recess, and that the circular-segment shaped locking member has a smallest diametral dimension which is less than a distance between the straight flanks of the guide and a largest diametral dimension which is substantially equal to a maximum distance between the opposite flanks of the guide at the circular-arc shaped recess.
One preferred embodiment of the invention is such that the locking member includes a curved external surface, having a radius of curvature which is substantially equal to that of the internal surface in the circular-arc shaped recess of the guide provided for the locking member.
REFERENCES:
patent: 3810330 (1974-05-01), Daggy
patent: 5448855 (1995-09-01), Sjoholm
patent: 5548926 (1996-08-01), Sjoholm
patent: 6065247 (2000-05-01), Sundvall
patent: WO 93/08355 (1992-10-01), None
patent: WO 94/19570 (1993-09-01), None
Iloxi Oy
Redman Jerry
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