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US 6,295,673 B1Granted
Reinforced pocketed spring assembly
AssigneeL&P Property Management Company
InventorNiels S. Mossbeck
Life of this patent
Estimating the term…
Abstract
A method of assembling strings of pocketed coil springs into an innerspring core which may be used as the core of a mattress, cushion or similar body support foundation uses a reinforcing material, preferably having an adhesive component, between rows of pocketed coil springs. The reinforcing, adhesive material serves to bond the rows of springs to each other and to reinforce the pockets to prevent wear between coils in frictional relation.
Claims35
A method of making a spring core comprising:
- encasing a plurality of coiled springs in individual pockets of material to form a string of pocketed coil springs with opposing outwardly facing surfaces;
- adding a layer of fabric reinforcing material to at least one of the facing surfaces to cover a majority of the area of said facing surface;
- juxtaposing a plurality of the strings of pocketed coil springs in side-by-side fashion with longitudinal axes of the springs being generally parallel to one another, and with at least one outwardly facing surface of adjacent strings having the layer of reinforcing material;
- and
- joining the strings of pocketed coil springs together.
2 more elements
A method of making a spring core comprising:
- folding a strip of material at least twice to form a strip of material having at least three plies;
- thereafter inserting each of a plurality of coiled springs between two of the three plies to encase the coiled springs in individual pockets of material to form a string of pocketed coil springs with opposing outwardly facing surfaces;
- juxtaposing a plurality of the strings of pocketed coil springs in side-by-side fashion with longitudinal axes of the springs being generally parallel to one another, and with one outwardly facing surface of adjacent strings having the two-ply layer of material and the other outwardly facing surface having the one-ply layer of material, and with at least one outwardly facing surface of adjacent strings having a layer of flexible adhesive material;
- and
- joining the strings of pocketed coil springs together.
2 more elements
A method of making a spring core comprising:
- encasing a plurality of coiled springs in individual fabric pockets to form a string of pocketed coil springs with opposing outwardly facing surfaces;
- adding a layer of flexible, fabric reinforcing material to at least one of the facing surfaces, wherein the layer of flexible, fabric reinforcing material has an adhesive component;
- juxtaposing a plurality of the strings of pocketed coil springs in side-by-side fashion with longitudinal axes of the springs being generally parallel to one another, and with at least one outwardly facing surface of adjacent strings having the layer of flexible, fabric reinforcing material with the adhesive component;
- and
- thereafter activating the adhesive component and thereby joining the strings of pocketed coil springs together.
2 more elements
A method of making a spring core comprising:
- inserting a plurality of coiled springs in a compressed state through an opening between two plies of fabric;
- sealing the fabric between adjacent coils and at the opening to form individual coil-spring containing fabric pockets with opposing outwardly facing surfaces, wherein the seal if formed by a method selected from the group comprising stitching and thermal sealing;
- turning the coils to permit expansion along the seal between adjacent pockets;
- adding a layer of flexible, fabric reinforcing material to at least one of the facing surfaces, wherein the layer of flexible, fabric reinforcing material has an adhesive component;
- juxtaposing a plurality of the strings of pocketed coil springs in side-by-side fashion with longitudinal axes of the springs being generally parallel to one another, and with at least one outwardly facing surface of adjacent strings having the layer of flexible, fabric reinforcing material with the adhesive component;
- and
- activating the adhesive component and thereby joining the strings of pocketed coil springs together.
4 more elements
A method of making a spring core comprising:
- encasing a plurality of coiled springs in individual fabric pockets to form a string of pocketed coil springs;
- juxtaposing a plurality of the strings of pocketed coil springs in side-by-side fashion with longitudinal axes of the springs being generally parallel to one another;
- adding a layer of flexible, fabric reinforcing material between adjacent strings of pocketed coil springs, the flexible, fabric reinforcing material having an adhesive component;
- and
- thereafter activating the adhesive component and thereby joining the strings of pocketed coil springs together.
2 more elements
A spring core comprising:
- a plurality of strings of coiled springs in individual fabric pockets in side by side relation with longitudinal axes of the springs being generally parallel to one another;
- and
- a layer of flexible fabric material with an adhesive component between each adjacent pair of strings of coiled springs, and covering a major portion of each facing surface of the adjacent strings, the adhesive having been activated to bond the adjacent strings together.
A spring core comprising:
- a plurality of strings of coiled springs in individual fabric pockets in side by side relation with longitudinal axes of the springs being generally parallel to one another;
- wherein the individual fabric pockets are two-ply on a first side, one-ply on a second side, and sealed at one longitudinal end;
- and
- a layer of adhesive material between each adjacent pair of strings of coiled springs bonding the adjacent strings together.
1 more element
A spring assembly manufactured from a method comprising:
- encasing a plurality of coiled springs in individual fabric pockets to form a string of pocketed coil springs with opposing outwardly facing surfaces;
- adding a layer of flexible, fabric reinforcing material to at least one of the facing surfaces, wherein the layer of flexible, fabric reinforcing material has an adhesive component;
- juxtaposing a plurality of the strings of pocketed coil springs in side-by-side fashion with longitudinal axes of the springs being generally parallel to one another, and with at least one outwardly facing surface of adjacent strings having the layer of flexible, fabric reinforcing material with the adhesive component;
- and
- thereafter activating the adhesive component and thereby joining the strings of pocketed coil springs together.
2 more elements
A spring assembly manufactured from a method comprising:
- folding a strip of material at least twice to form a strip of material having at least three plies;
- thereafter inserting each of a plurality of coiled springs between two of the three plies to encase the coiled springs in individual pockets of material to form a string of pocketed coil springs with opposing outwardly facing surfaces;
- adding a layer of flexible adhesive material to at least one of the facing surfaces;
- juxtaposing a plurality of the strings of pocketed coil springs in side-by-side fashion with longitudinal axes of the springs being generally parallel to one another, and with one outwardly facing surface of adjacent strings having the two-ply layer of material and the other outwardly facing surface having the one-ply layer of material, and with at least one outwardly facing surface of adjacent strings having the layer of flexible adhesive material;
- and
- joining the strings of pocketed coil springs together.
3 more elements
A method of making a spring core comprising:
- encasing a plurality of coiled springs in pocketing material to form a string of pocketed coil springs with opposing outwardly facing surfaces;
- adding a layer of fabric material to at least one of the facing surfaces to cover a majority of the area of said facing surface;
- juxtaposing a plurality of the strings of pocketed coil springs in side-by-side fashion with longitudinal axes of the springs being generally parallel to one another, and with at least one outwardly facing surface of adjacent strings having the layer of fabric material;
- and
- joining the strings of pocketed coil springs together.
2 more elements
A method of making a spring core comprising:
- encasing a plurality of coiled springs in pocketing material to form a string of pocketed coil springs with opposing outwardly facing surfaces;
- adding a discrete layer of fabric material to at least one of the facing surfaces of the pocketing material;
- juxtaposing a plurality of the strings of pocketed coil springs in side-by-side fashion with longitudinal axes of the springs being generally parallel to one another, and with at least one outwardly facing surface of adjacent strings having the layer of fabric material;
- and
- joining the strings of pocketed coil springs together.
2 more elements
A spring core comprising:
- a plurality of strings of coiled springs in pockets in side by side relation with longitudinal axes of the springs being generally parallel to one another;
- and
- a layer of fabric material adhesively joined between each adjacent pair of strings of coiled springs, and covering a majority of the area of each facing surface of the adjacent strings, wherein the adjacent strings are joined together by adhesive.
A spring core comprising:
- a plurality of strings of coiled springs in pockets formed from pocketing material in side by side relation with longitudinal axes of the springs being generally parallel to one another;
- and
- a discrete layer of fabric material adhesively joined between each adjacent pair of strings of coiled springs, wherein the adjacent strings are joined together by adhesive.
Dependencies are inferred from the claim text.