Box spring core with compartmentalized springs

Details Box spring core with compartmentalized springs Box spring core with compartmentalized springs

1993-02-08

1994-06-14

Grosz, Alexander

Beds

Bedclothing

And means to facilitate changing thereof

A47C 2707, A47C 2706, A47C 2304

Patent

active

053198158

DESCRIPTION:

BRIEF SUMMARY
FIELD OF THE INVENTION

The invention relates to a box-spring core with a plurality of parallel chains of boxed springs, each chain having a continuous row of springs which are closely encased by a cloth-like sheath and connected by same to one another with the thus formed pockets of a chain having transverse seams restricting the springs and extending parallel to the longitudinal axes of the springs and where furthermore the adjacent chains are mechanically joined to one another.


BACKGROUND OF THE INVENTION

Such boxed spring cores are known for example from EP 154,076. Here parallel chains are connected together by means of glue. Box spring cores are further known from the state of the art wherein a mechanical connection is formed by throughgoing connecting filaments.
The use of glue is disadvantageous in that on the one hand it requires the use of an additional material, the glue, and on the other hand applying devices for the glue must be provided and time must be set aside for curing of the glue. In the hitherto known mechanical connection systems a substantial amount of equipment is necessary, and in addition the use of connecting filaments is disadvantageous both during manufacture and during further handling.


OBJECT OF THE INVENTION

Starting from this state of the art, it is an object of the invention to provide a box-spring core of the described type where the connection of adjacent chains takes place without additional material.


SUMMARY OF THE INVENTION

In order to achieve these objects, the invention suggests that the chains have in the region of the connecting seams insert slits extending over half of the chain height and open to the same edge, that a first group of the chains are arranged parallel to and at a spacing from one another with their slits directed in the same direction and that a second group of chains is arranged parallel to and at a spacing from one another and at a right angle to the first number of chains with their slits directed in the same direction and oppositely to those of the first group, and the first and second groups of chains are arranged with interengaging slits in rows and columns with the spaces formed between parallel rows filled in gaps between the elements of the first group of chains by elements of the second group of chains so that the elements of adjacent rows or columns are staggered relative to each other.
With the arrangement of the invention it is only necessary to provide the slits in the region of the connecting seams of the chains. The thus formed chains can then be arranged relative to each other in rows and columns at right angles to each other and can be fitted together with interfitting slits without the use of additional material. It is not necessary to provide glue connections, weld connections, stitched connections, stapled connections, or the like. The arrangement according to the invention forms a spring core in which the chains are arranged in rows and columns with relatively tight packing of the boxed springs to form a box-spring core exclusively by interengagement of the slit regions. In this manner an exact outer dimension of the box spring is attained with no relative shifting of the springs in the length and/or width possible since the insert slits in the seam region achieve an exact positioning. In addition a tight surface orientation with boxed springs is obtained which leads to high stability of the spring core. Furthermore substantial hardness of the box-spring core is obtained which has hitherto only been achievable by relatively thick wires in the spring elements.
A preferable embodiment is that respective double seams are formed between the boxed springs of a chain and each insert slit is formed between the respective pair of connecting seams.
This ensures that when making the dividing slits the connecting seam is not severed, which could lead to a releasing of the boxed springs in this region.
Furthermore it can be advantageous to form a web of the sheathing material of the boxed springs between each pair of connecting s

REFERENCES:
patent: 1284384 (1918-11-01), Lewis
patent: 4523344 (1985-06-01), Stumpf et al.
patent: 4578834 (1986-04-01), Stumpf

Affiliated with

Also associated with

Rating

Box spring core with compartmentalized springs does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Box spring core with compartmentalized springs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Box spring core with compartmentalized springs will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1238754