Flexible or portable closure – partition – or panel – Plural strip – slat – or panel type – With mounting or supporting means
Reexamination Certificate
2000-06-14
2001-11-06
Purol, David M. (Department: 3634)
Flexible or portable closure, partition, or panel
Plural strip, slat, or panel type
With mounting or supporting means
C160S189000
Reexamination Certificate
active
06311757
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a door or gate closing apparatus.
2. Description of the Related Art
Door closing apparatuses for industrial doors, for example, are known in a variety of versions. They normally consist of a flexible door panel which can be wound up on a winding shaft supported in the upper frame section of the door and provided with a drive, the side ends of which door panel are guided in slits of the side door sections and the lower closing section of which is connected to ropes which tighten the door panel. Such door closing apparatuses have only a low stability due to their flexible door panel usually consisting of plastic.
Doors where the door panel which can be wound up on the winding shaft consists of strip-shaped closing elements which can be hinged together like Venetian blinds have a greater stability.
However, with door panels which can be wound up on winding shafts and which can be wound off same, the disadvantage exists that these have to be moved at the same speed during opening and closing, whereby the rotatory masses of the winding shaft, of the door panel section wound up thereon and of the drives are added to the translatorily moved masses so that a relatively unfavourable energy balance is produced.
SUMMARY OF THE INVENTION
It is the object of the invention to provide a door or gate closing apparatus which can be opened and closed quickly with masses moved at the lowest possible speed.
This object is solved in accordance with the invention by essentially rectangular plate-shaped closing elements disposed horizontally and in parallel to one another, which are guided in the region of the lateral door cross beams and movable relative to one another by a drive from an upper position, in which they lie next to each other roughly edgeways to their wide sides in a stack with essentially aligned side edges, to a lowered position, into which they are travelled with decreasing overlapping length and in which they still only overlap by their edge sections, and which are connected to the upper beam or closing section of the door and to one another by flexible tension or gear elements in such a way that the first closing element is lowered or raised relative to the closing section and neighbouring closing elements relative to each other at the same speed.
As the topmost plate-shaped or lamellar closing element is lowered or raised relative to the upper closing section and the following closing elements each relative to the preceding one both at the same speed, the second closing element is travelled at double the speed of the first and the third at three times the speed of the first and the last closing element at a speed corresponding to the speed of the first closing element multiplied by the number of closing elements. As, therefore, only the bottom-most closing element is travelled over the full height of the opening to be closed during the opening or closing of the door and the preceding closing elements at a correspondingly lower speed only over correspondingly shorter distances, overall a . . . masses . . . adding also the rotating masses of the winding shaft, of the section of the gate leaf and the drives, wound on said winding shaft, so that the result is a relatively poor energy balance.
The object of the invention is to provide a door or gate lock that can be quickly opened and closed, yet the masses move at the lowest possible speed.
The invention solves this problem by means of essentially rectangular, plate-shaped locking elements, which are arranged horizontally and parallel to each other. Said locking elements are guided in the region of the side gate rails and can be slid relative to each other by means of a drive out of an upper position, in which they lie, for example, on edge with respect to their wide sides, side by side with essentially aligned side edges in a stack, into a lowered position, into which they are moved with decreasing overlapping lengths and in which they overlap only with their edge regions. Said locking elements are connected in such a manner by means of flexible pull and/or drive elements to the upper beams or end profile of the gate and to each other that the first locking element is lowered and lifted relative to the end profile at the same speed and the adjacent locking elements are lowered and lifted relative to each other at the same speed.
Since the uppermost plate-shaped or lamellar locking element is lowered and lifted relative to the upper end profile at the same speed and the following locking elements are lowered and lifted relative to the respective preceding one at the same speed, the second locking element is moved at twice the speed of the first and the third at three times the speed of the first and the last locking element at a speed that is equivalent to the speed of the first locking element multiplied by the number of locking elements. Therefore, since upon opening and closing the gate the bottommost locking element is moved over the entire height of the aperture to be locked and the . . .
The U.S. Pat. No. 2,841,390 discloses a gate lock for wide and large apertures, such as the entrance aperture of airport hangars, factories and the like. In addition, there are several gate elements, which are arranged vertically and parallel to each other and can be slid sideways to each other. In this respect the right side of a first gate element can have, for example, a connecting cable that is guided over a roller on the right end of a neighboring gate element and is connected to the left end of a second gate element. . . . masses . . . adding also the rotating masses of the winding shaft, of the section of the gate leaf and the drives, wound on said winding shaft, so that the result is a relatively poor energy balance.
The object of the invention is to provide a door or gate lock which can be quickly opened and closed, yet the masses move at the lowest possible speed.
The invention solves this problem by means of essentially rectangular, plate-shaped locking elements, which are arranged horizontally and parallel to each other. Said locking elements are guided in the region of the side gate rails and can be slid relative to each other by means of a drive out of an upper position, in which they lie, for example, on edge with respect to their wide sides, side by side with essentially aligned side edges in a stack, into a lowered position, into which they are moved with decreasing overlapping lengths and in which they overlap only with their edge regions. Said locking elements are connected in such a manner by means of flexible pull and/or drive elements to the upper beams or end profile of the gate and to each other that the first locking element is lowered and lifted relative to the end profile at the same speed and the adjacent locking it elements are lowered and lifted relative to each other at the same speed.
Since the uppermost plate-shaped or lammelar locking element is lowered and lifted relative to the upper end profile at the same speed and the following locking elements are lowered and lifted relative to the respective preceding one at the same speed, the second locking element is moved at twice the speed of the first and the third at three times the speed of the first and the last locking element at a speed that is equivalent to the speed of the first locking element multiplied by the number of locking elements. Therefore, since upon opening and closing the gate the bottommost locking element is moved over the entire height of the aperture to be locked and the exising locking elements have to be moved only over the correspondingly shorter distance at a correspondingly lower speed, the result is altogether a positive energy balance when opening and closing the gate lock of the invention.
A preferred embodiment provides that segments of the flexible pull mechanisms proceed from a fixed point in the lower region of the upper end profile and fixed points in the bottom regions of the locking elements respectively, with the exception of the bottom locking e
Puncoh Milan
Schuette Wolfgang
Jacobson & Holman PLLC
Purol David M.
Schieffer Tor-und Schutzsysteme GmbH
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