Buckles – buttons – clasps – etc. – Zipper or required component thereof – Interlocking surface constructed from plural elements in series
Patent
1998-02-25
2000-07-25
Brittain, James R.
Buckles, buttons, clasps, etc.
Zipper or required component thereof
Interlocking surface constructed from plural elements in series
24431, A44B 1902
Patent
active
060922672
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention concerns a zipper closure (fastener) having teeth made of a plastic material which are formed on two strips. Free ends of the teeth in one row extend into a fixing region of the other row of teeth, and the free ends are provided with channels.
A known zipper closure is described in German laid-open application (DE-OS) No 23 04 341. Since successive teeth of the zipper closure overlap practically over their entire lengths, it is relatively difficult to open the zipper closure. In order to exert an opening force onto a critical region of the zipper closure during opening of the zipper closure, it has already been suggested to provide bands of the zipper closure with a second bead or web on which the outer surface of a slider slides along. The bands are pulled apart due to the widening of the slider between its back end and its front end.
SUMMARY OF THE INVENTION
The aim of the present invention is to exert a force in an opening direction during opening onto teeth of a zipper closure of the kind set forth in the opening part of this specification by virtue of the configuration of a slider. The slider of the zipper closure is provided with a tapered projection which is arranged at the height of channels in the teeth. The tapered projection projects beyond a cross-piece which connects a top cover plate to a bottom cover plate of the slider. The channels have bottoms which are convexly curved in the plane of the teeth.
Therefore, the core of the invention lies in the combination of two features. One feature is that a projection, which is disposed at the height of the channels, must be arranged on the slider. Another feature is that the channels must extend towards a vertical centerline of the zipper closure to such an extent that the base of the channels moves behind a separating line when the teeth are inclined in the slider.
BRIEF DESCRIPTION OF THE DRAWINGS
Detail of the invention are explained with reference to the accompanying drawings.
FIG. 1 is a top or elevation view of a zipper closure;
FIG. 2 is an enlarged longitudinal sectional view through a tooth;
FIG. 3 is an enlarged top view of two adjacent teeth;
FIG. 4 is an enlarged vertical longitudinal sectional view through a slider;
FIG. 5 is an enlarged top view of the zipper closure in which bands and a cover plate of the slider have been removed; and
FIG. 6 corresponds to FIG. 2 for a second embodiment.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
A zipper closure is shown in FIG. 1. The zipper closure comprises two bands 5, 5', on which teeth 1, 1' are arranged. Edge beads (webs) 9, 9' of the bands 5, 5' serve to support teeth 1, 1', and the teeth 1, 1' are attached to the beads 9, 9' by injection molding during production thereof. Decorative stones 3, for example made of lead crystal, are embedded at the same time. A slider 4 is used to open and close the zipper closure in the usual way.
As can be seen from FIGS. 2 and 3, contact areas of the teeth 1, 1' confronting and abutting one another in the closed position are designed to have a prismatic shape such that the contact areas encounter no resistance to a vertical shifting of the teeth relative to one another (i.e., shifting in a direction perpendicular to the plane of FIG. 3), aside from friction. The teeth 1, 1' are anchored normal with respect to the bands 5, 5'. Channels (grooves) 6, 6' formed in free ends of the teeth 1, 1' receive the beads 9, 9' of the opposing band 5, 5'. So that this is possible, the teeth 1, 1' must have a length which approximately corresponds to the width of the closed zipper closure. Viewed from above each tooth 1, 1' starting from a base 11, 11' converges to a narrowest area or portion thereof, from which support surfaces 2, 2' extend outwardly nearly parallel to the bands 5, 5'. The free end of each tooth 1, 1' has approximately a half ellipse shape.
Decorative stones 3 can be arranged in a straight line. Spacing between the stones 3 is small in comparison with the sizes of the stones 3, if the support surfaces 2, 2" ar
REFERENCES:
patent: 2525284 (1950-10-01), Camp et al.
patent: 2720015 (1955-10-01), Morin
patent: 4765038 (1988-08-01), Kasai
patent: 5511292 (1996-04-01), Covi et al.
Covi Christian
Steinlechner Werner
Brittain James R.
D. Swarovski & Co.
LandOfFree
Slide fastener does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Slide fastener, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Slide fastener will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1328118