Reverse coil head coils and innersprings
AssigneeSealy Technology, LLC
InventorsLarry DeMoss, James A. Beamon, Brian M. Manuszak, Herman F. Fisher, Joseph Truskolasky, David J. Pleiman, Dan Olsen, Randy Sizemore
Life of this patent
Estimating the term…
Abstract
A reverse coil head coil and innerspring has a generally cylindrical and helical wire form coil body and opposing coil ends which terminate on opposite sides of a reference plane that passes through the coil body. The reverse coil head coils are interconnected in a matrix to form an innerspring wherein only one terminal end of each coil is located at a perimeter of the innerspring. Variations in the number and pitch of helical turns of the coil body are also disclosed.
Claims25
A mattress innerspring consisting of a plurality of interconnected reverse coil head coils, each reverse coil head coil having:
- a generally helical coil body with a plurality of generally helical turns of wire;
- a first coil end contiguous with a first end of the coil body and substantially lying in a plane which is generally perpendicular to an axis of the coil body;
- a second coil end contiguous with a second end of the coil body and substantially lying in a plane which is generally perpendicular to the axis of the coil body;
- the first coil end having a terminal end which is located on a first side of a reference plane which passes through the coil body;
- the second coil end having a terminal end which is located on a second side the reference plane which passes through the coil body;
- the plurality of reverse coil head coils arranged in a matrix and wherein the axes of the coils are generally parallel and the first coil ends are generally co-planar and the second coil head ends are generally co-planar, the first coil ends of adjacent coils being laced together by a lacing wire, the lacing wire engaged with an offset of the first coil end of a coil and engaged with a terminal offset of the first coil end of an adjacent coil, the first coil end terminal end extending from the terminal offset,
- and the second coil ends of adjacent coils being laced together by a lacing wire, the lacing wire engaged with an offset of the second coil end of a coil and engaged with a terminal offset of the second coil end of an adjacent coil, the second coil end terminal end extending from the terminal offset.
A mattress innerspring comprising a plurality of interconnected reverse coil head coils, each of the reverse coil head coils comprising a generally cylindrical coil body with three or more helical turns of wire about a longitudinal axis of the coil body, the coil body terminating at opposite first and second coil ends;
- each of the first and second coil ends having at least one offset and a free end, the free end of the first coil end located on a first side of a reference plane which passes through the body of the coil, and the free end of the second coil end located on an opposite side of the reference plane which passes through the body of the coil;
- a pitch and diameter of at least one helical turn located in a middle region of the coil body being less than the pitch and diameter of other helical turns of the coil body which are relatively closer to the first or second coil ends.
A mattress innerspring comprising:
- a plurality of wire coils interconnected in an array, each wire coil comprising:
- a coil body with a plurality of helical convolutions;
- a first coil end at one end of the coil body;
- a second coil end at an opposite end of the coil body;
- the first and second coil ends each lying in generally in a plane which is generally perpendicular to a longitudinal axis of the coil body;
- the first coil end having a free end located on one side of a reference plane which passes through the coil body;
- the second coil end having a free end located on an opposite side of the reference plane which passes through the coil body, and
- wherein the coil body has at least four helical convolutions and at least two different pitch angles between the helical convolutions.
Dependencies are inferred from the claim text.