Metal working – Method of mechanical manufacture – With testing or indicating
Patent
1996-09-10
2000-12-05
Bryant, David P.
Metal working
Method of mechanical manufacture
With testing or indicating
2924356, 294321, 2952507, 2952508, 2952515, 29716, 227 13, B23Q 1700
Patent
active
061549436
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a device for closing sheathings, such as cable conduits, flexible pipe lines or container elements by means of a closure device provided on a tool, wherein closure elements at two oppositely located rim parts of the sheathing can be alternatingly hooked together and unhooked, or separated, when being opened by means of a slider disposed on the tool.
A tool for closing zippers is already generally known, which is used in connection with zippers of cable conduits and for this purpose has a slider, which connects the two oppositely located closure elements or takes them apart again, if this is desired. Closure elements put together in this way, however, are unsecured and can therefore easily be opened again, even if this is not intended, particularly if a pull is exerted on the closure elements.
A coil zipper made of plastic for closing slits in duvets or pillow covers is furthermore known (DE PS 10 46 539), wherein the connected end position can be locked against being ripped open after the slider has been received by the coupled closure by means of a removable connection clip which connects both support strips and can be inserted into them. The mounting of such a zipper for cable conduits is very time-consuming, because the closure element for the zipper with the associated slider can only be manually operated. Therefore a lot of time is needed to close cable conduits with such a slider. Since the cables inserted into the cable conduits exert a relatively strong pressure on the cable wall, a very great expenditure of force is required in addition, so that the closure mechanism can only be moved with great difficulties and in some cases not at all.
SUMMARY OF THE INVENTION
In contrast thereto, it is the object of the invention to embody and arrange the device for closing sheathings, such as cable conduits, in such a way that the closure elements can be easily and very quickly connected and also secured with a single tool.
This object is attained in accordance with the invention in that a further device for securing the connected closure elements or connection elements is provided on a tool for receiving the slider, which can be activated independently of the respective position of the slider. By means of the advantageous design and arrangement of the tool it is possible to easily connect the closure elements, for example a zipper, in a single pass and to secure them with the same tool, so that opening of the closure elements by pulling forces acting on the closure elements is not possible. It is possible by means of this to make the working process for closing zippers considerably less expensive.
To do this it is advantageous that the device for securing the connected closure elements is provided in the area of the slider. Since the device for securing the connected closure elements is provided relatively close to the slider, the automatic opening of the closure elements connected by the slider is prevented, if the securing element on the closure elements is used for this.
In accordance with a further development of the invention, an additional possibility consists in that the device for securing the connected closure elements or the zipper is provided in front of or behind the slider in respect to the direction of movement of the slider.
It is advantageous in a further embodiment of the invention that the device is formed by a plunger guided on the tool and an anvil or matrix cooperating with it, which can be activated by means of a regulating element. Clips, which secure the connected closure elements of the zipper against separation, can be inserted into the zipper in a very low-cost manner by means of the plunger and the anvil cooperating with the plunger.
In accordance with a preferred embodiment of the attainment of the object of the invention it is finally provided that the device for securing the connected closure element is formed by a plunger guided on the tool and an anvil or matrix cooperating with it, wherein the device can be activated by
REFERENCES:
patent: 2666916 (1954-01-01), Spiegel et al.
patent: 3650009 (1972-03-01), Ausnit et al.
patent: 4218814 (1980-08-01), Hodapp
patent: 4224731 (1980-09-01), Lingle
patent: 4891256 (1990-01-01), Kite, III et al.
patent: 5208962 (1993-05-01), Walker, Jr.
Bryant David P.
Butler Marc W.
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