The present invention relates to the field of seat cushion configurations. In particular, the present invention relates to a plurality of foam or fiber layers of different types, densities, and elasticities used to create a weight distribution and suspension system to obtain a longer lasting softness and more comfortable cushion for user body comfort.
This invention pertains to a seat cushion apparatus that utilizes a weight distribution and suspension system to cushion the body of the user when he or she is seated on a hard surface for an extended period of time. It is not uncommon to be in attendance at an event where the only options for seating are hard and uncomfortable wood, metal, or concrete seats. After sitting on such a seating surface for even a short amount of time, the buttocks and lower back may become sore and uncomfortable because the cushion is either too firm or too soft such that it compresses completely to the hard surface below, leaving no support to the body of the user of the cushion. Such discomfort may make the cushion user unable to enjoy the event and may lead to more severe health concerns.
There exist in the background art stadium seat cushions. However, these inventions do not provide a cushion that is designed to distribute weight and retain its softness. Most bottom out (the effect of tail bone pressure against the hard surface below) within seconds due to the nature of the standard open cell foam having a minimum resistance to focused compression in a rather small surface area. These seats are usually no more than a means for applying a logo or advertisement. Other inventions take the standard flexible polyether urethane foam used in cushions and make it a little thicker to give more resistance to compression but the effect is short lived before the bottoming out is noticeable to the buttocks and the back of the user.
Existing patents focus mainly on new enclosures and covers, how such enclosures and covers are attached, and the accessories to cover a cushion. No art exists providing a technique or system to address a way to obtain a softer more comfortable cushion for an extended period of time. That is the purpose of this invention.
These and other problems exist. Previous attempts to solve these and other problems include the following.
U.S. Pat. No. 6,691,356, issued to Charles E. Coma on Feb. 17, 2004, discloses a portable cushion apparatus for positioning between a user and a support surface and including a plurality of pad members. Although this patent discloses a plurality of pad members, a front and back pad, and discloses a cover placed over the pads, each pad disclosed is not composed of a plurality of layers of varying types and thickness of foam to provide softness and retention of softness, as is the present invention.
U.S. Pat. No. 6,779,884, issued to Dosen et al. on Aug. 24, 2004, discloses an ergonomic weight support device for a seat that has a weight distribution surface attached to a traction arching lumbar support. However, this patent does not include pads with a plurality of layers of varying types and thickness of foam as does the present invention.
U.S. Pat. No. 6,152,531, issued to Stefaan Deceuninck on Nov. 28, 2000, discloses a seat arrangement comprising a platform element in the form of a wire grid comprising side rails between which extend a plurality of supporting wires having angled portions such that the platform element is transversely extensible under load. This patent discloses a seat suspension arrangement, but it does not disclose pads with a plurality of layers of varying types and thickness of foam to provide support of the body.
U.S. Pat. No. 6,076,211, issued to Chatman, Dean A. on Jun. 20, 2000, discloses a combined seat cushion for use by fans at sporting events, including a seat cushion having a resilient cushion member, a pliable cover enclosing the cushion member including a handle formed therein at an edge of the cushion, a sign container disposed at the edge of the cushion, a marker detachably connected to the cushion, an eraser pad for the marker retained in the pliable cover, and a panel container overlying a side of the cushion. Although this patent discloses a seat cushion for use at sporting events, the patent discloses only a resilient cushion member. Further, the invention appears to primarily relate to the use of the seat cushion as an advertising mechanism. This patent does not disclose pads with a plurality of layers of varying types and thickness of foam to provide support of the body.
U.S. Pat. No. 6,058,535, issued to Firkins and Hazelip on May 9, 2000, discloses an insulating, heat-reflective pad made from several thin slats of insulating material which are held between a breathable top sheet of material and a water resistant bottom sheet of material. The sheets of material are joined so as to create pockets which hold insulating slats made from a polyisocyanurate foam composite. However, this patent does not disclose pads with a plurality of layers of varying types and thickness of foam to provide support of the body as does the present invention.
U.S. Pat. No. 5,987,668, issued to Robert E. Ackley on Nov. 23, 1999, discloses a washable fabric covered mattress pad and involves the combination of a layer of resilient foam with a layer of fabric, both of which layers are machine washable and dryable. However, this patent does not disclose pads with a plurality of layers of varying types and thickness of foam to provide support of the body as does the present invention.
U.S. Pat. No. 5,360,653, issued to Robert E. Ackley on Nov. 1, 1994, discloses a resilient panel comprising a first sheet having a plurality of pockets each having a resilient foam element located therein. Each of the foam elements is sized to substantially conform with the size of the pocket within which it is located. Although this patent discloses the use of a plurality of foam pieces, it does not disclose the use of a plurality of foam layers of alternating types, densities, and elasticities to provide support and comfort to the user.
U.S. Pat. No. 5,291,625, issued to Philip L. Leslie on Mar. 8, 1994, discloses a mattress-like pad for human body support, comfort, and recreational use. The pad includes a light-weight inner pad structure fabricated of a stacked arrangement of a multiplicity of like rectangularly configured layers of two-ply laminated sheet plastic material encapsulating between the plys of each layer a multiplicity of uniformly arranged, separated and sealed air bubbles. Although this patent discloses a pad with multiple layers, the layer product itself is air, not a plurality of foam layers of alternating types, densities, and elasticities.
U.S. Pat. No. 4,925,241, issued to Ronald J. Geraci on May 15, 1990, discloses a portable cushion apparatus that is described as generally comprising a pair of cushions which are joined together by a flexible hinge at one end which permits a variety of seating configurations. However, each pad disclosed is not composed of a plurality of layers of varying types and thickness of foam to provide softness and retention of softness as is the present invention.
U.S. Pat. No. 4,863,003, issued to Alice L. Carter on Sep. 5, 1989, discloses a combination seat cushion and tote bag comprising a seating portion and at least one side portion having a pocket enclosure. This patent, however, does not disclose a plurality of layers of varying types and thickness of foam to provide softness and retention of softness as does the present invention.
U.S. Pat. No. 4,194,254, issued to Kay Torrez on Mar. 25, 1980, discloses a floor-supported cushion assembly comprising a seat pad of foam material encased in one end portion of a fabric envelope, a back pillow consisting of a pillowcase filled with shredded polyurethane foam and received in the other end portion of the envelope, and a fabric hinge formed by portions of said envelope between said end portions. However, this patent does not disclose a plurality of layers of varying types and thickness of foam to provide softness and retention of softness.
U.S. Pat. No. 4,190,918, issued to Glenn M. Harvel on Mar. 4, 1980, discloses a folding cushion assembly having two cushions interconnected together by a flexible inner panel and foldable from an extended position to a position where the cushions lie in back-to-back relationship. This folding cushion patent does not, however, disclose a plurality of layers of varying types and thickness of foam to provide softness and retention of softness.
U.S. Pat. No. 4,604,987, issued to Heidi Keltner on Aug. 12, 1986, discloses a heated stadium cushion has a pad having a pocket adapted to contain an air-activated chemical heating packet. This patent does not disclose a plurality of layers of varying types and thickness of foam as does the present invention.
U.S. Pat. No. 4,783,120, issued to Robert J. Kiechlin on Nov. 8, 1988, discloses an independent seat cushion used primarily to provide seating comfort at commercial locations, such as stadiums, conventions, arenas or the like, which is readily carried to the use site. This patent, however, relies only on a single pad cushion and does not disclose or suggest a plurality of pads or layers of different types or thicknesses.
U.S. Pat. No. 6,588,840, issued to Catherine Lombardo on Jul. 8, 2003, discloses a seat cushion cover in combination with a sport seat cushion includes a rectangular pocket defined by a fabric upper panel and a lower panel. Although this patent discloses a seat cushion for use in stadiums, it does not disclose a plurality of pads or layers of different types or thicknesses.
U.S. Patent Application No. 20050035639A1, filed by Troy Jones on Feb. 17, 2005, discloses a cushion. The cushion has a seat cushion and a back cushion that are attached with an attachment element. The cushion is intended to provide comfort to a patron using a stadium seat. This patent, however, does not disclose a plurality of alternating densities and elasticities as does the present invention.
Canadian Patent No. CA 2,241,857 AA, issued to Adam Goldenberg on Dec. 29, 1999, discloses a portable cushion for use on a seat at a stadium or the like, which inverts into a pouch for convenient carrying. The portable cushion has a seat cushion, a sleeve which slips over the stadium seat to retain the cushion in place, and in the preferred embodiment a fold-up back cushion and a pouch for the storage of articles suspended beneath the seat cushion when the portable cushion is in place. This patent, however, does not disclose a plurality of alternating densities and elasticities as does the present invention.
U.S. Pat. No. 5,639,145, issued to Peter Brown on Jun. 17, 1997, discloses a portable, flexible cushion utilizing layers of different foam plastic materials secured together at contacting faces. The cushion combines closed cell and open cell foam plastic material features and a hinged construction providing reversibility and can be used in right angle and flat end to end applications. Although this patent discloses the use of layers of different foam plastic materials secured together, the invention does not suggest a weight distribution and suspension system for a human body in a seated position comprising a plurality of foam layers of alternating types, densities, and elasticities. Additionally, the present invention discloses a multi-layered weight suspensions system of five layers of alternating foam types.
While these patents and other previous methods have attempted to solve the above mentioned problems, none have utilized a plurality of alternating types, densities, and elasticities of material as does the present invention.
Therefore, a need exists for a weight distribution and suspension system for a human body in a seated position comprising a plurality of foam layers of alternating types, densities, and elasticities.
The foregoing patent and other information reflect the state of the art of which the inventor is aware and are tendered with a view toward discharging the inventor's acknowledged duty of candor in disclosing information that may be pertinent to the patentability of the present invention. It is respectfully stipulated, however, that the foregoing patent and other information do not teach or render obvious, singly or when considered in combination, the inventor's claimed invention.
The general purpose of the present invention, which will be described subsequently in greater detail, is to provide a multiple layered seating cushion. In particular, the present invention relates to a weight distribution and suspension system for a human body in a seated position comprising a plurality of foam layers of alternating types, densities, and elasticities.
The present invention is comprised of a plurality of foam layers of alternating types, densities, and elasticities which are incorporated into a stadium seat cushion and its cover with various features. The seat cushion and cover comprise a plurality of foam layers of alternating types, densities, and elasticities, a vinyl cushion cover, a second layer of vinyl, covering the top surface and creating a pocket; a fabric cushion backing; a mesh pocket for holding small items, comprised of a polyester elastic net mesh, within which to place items, pleats, and two elastic bands, a nylon zipper, a nylon hand strap, and two plastic rings to hold an optional shoulder carrying strap.
A primary advantage of the present invention is that the weight distribution and suspension system creates comfort to the human body seated on the cushion by displacing weight and downward force on the cushion over a plurality of foam layers of alternating densities and elasticities. This disbursement of body weight takes place not only over the top cushion surface, but also over the horizontal surfaces of each laminated foam layer. When weight is applied to the center area of the cushion, the compression is distributed below, thus creating greater comfort to the seated user.
Another advantage of the present invention is that the plurality of foam layers of alternating types, densities, and elasticities provides not only an initial softness to the user, but also provides retention of softness. Where other seat cushions will bottom out with use, this cushion allows for comfortable use over far greater periods of time.
There has thus been outlined, rather broadly, the more important features of the invention in order that the detailed description thereof that follows may be better understood, and in order that the present contribution to the art may be better appreciated. There are additional features of the invention that will be described hereinafter and which will form the subject matter of the claims appended hereto. In this respect, before explaining at least one embodiment of the invention in detail, it is to be understood that the invention is not limited in its application to the details of construction and to the arrangements of the components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced and carried out in various ways. Also, it is to be understood that the phraseology and terminology employed herein are for the purpose of description and should not be regarded as limiting.
As such, those skilled in the art will appreciate that the conception, upon which this disclosure is based, may readily be utilized as a basis for the designing of other structures, methods and systems for carrying out the several purposes of the present invention. It is important, therefore, that the claims be regarded as including such equivalent constructions insofar as they do not depart from the spirit and scope of the present invention.
Further objects and advantages of the present invention will be apparent from the following detailed description of a presently preferred embodiment which is illustrated schematically in the accompanying drawings.
Other advantages and features of the invention are described with reference to exemplary embodiments, which are intended to explain and not to limit the invention, and are illustrated in the drawings in which:
Before explaining the disclosed embodiment of the present invention in detail it is to be understood that the invention is not limited in its application to the details of the particular arrangement shown since the invention is capable of other embodiments. Also, the terminology used herein is for the purpose of description and not of limitation.
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In one embodiment of the present invention, a weight distribution and suspension system for a human body in a seated position comprising a plurality of foam layers of alternating types, densities, and elasticities is incorporated into seat cushion, 10, and seat cushion cover, 20 with various features. Seat cushion, 10, and Seat cushion cover, 20, comprise a plurality of foam layers of alternating densities and elasticities, closed cell polyethylene, 12 and reticulated filter foam, 14, vinyl material, 22, a second layer of vinyl, covering the top surface and creating vinyl material pocket, 46; cording with fabric covered cording, 26; a mesh pocket for holding small items, comprised of a polyester elastic net mesh, 28, within which to place items, pleats, 44, and elastic bands, 42, nylon zipper, 36, nylon strap handle, 32, and with plastic ring, 34, at each end to hold an optional shoulder carrying strap.
In this embodiment of the invention, the varying foam layers, closed cell polyethylene, 12 and reticulated filter foam, 14, may be laminated together with adhesive, 16, or may be left not laminated. Additionally, the layers may be held together at various layers by any combination of laminating or not laminating the various layers. In this embodiment of the invention, the foam layers may also be of varying degrees of thickness, providing varying degrees of softness and retention of softness.
In this embodiment of the invention, one or more layers of foam may be reticulated filter foam, 14, or closed cell polyethylene, 12. Additionally, one or more layers of foam may use flexible polyurethane foam, which may include high density, high resilience polyurethane foam.
In this embodiment of the invention, the weight distribution and suspension system creates comfort to the human body seated on the cushion by displacing weight and downward force on the cushion over a plurality of foam layers of alternating types, densities, and elasticities, closed cell polyethylene, 12 and reticulated filter foam, 14. This disbursement of body weight takes place not only over the top surface of seat cushion, 10, but also over the horizontal surfaces of each laminated foam layer, closed cell polyethylene, 12, then reticulated filter foam, 14, then closed cell polyethylene, 12, then reticulated filter foam, 14, then closed cell polyethylene, 12, for example. When weight is applied to the center area of seat cushion, 10, there is minimal compression created below, thus creating greater comfort to the seated user.
In this embodiment of the invention, each layer of closed cell polyethylene, 12, is three eighths of an inch in thickness. Additionally, each layer of reticulated filter foam, 14, has 30 pores per inch and is one inch in thickness. Additionally, the seat cushion is comprised of five of these alternating layers, closed cell polyethylene, 12, then reticulated filter foam, 14, then closed cell polyethylene, 12, then reticulated filter foam, 14, then closed cell polyethylene, 12. It is noted that the thicknesses and number of layers can vary in this cushion to increase or decrease the softness and comfort of the cushion.
In this embodiment of the invention, the shape of seat cushion, 10, and seat cushion cover, 20, is rectangular with radius corners. The size of the seat cushion, 10, is 11½ inches by 16 inches by 3½ inches. However, other sizes are possible while still using the weight distribution and suspension design.
In a second embodiment of the present invention, a method is disclosed for making seat cushion, 10, utilizing a weight distribution and suspension system for a human body in a seated position comprising a plurality of foam layers of alternating types, densities, and elasticities, closed cell polyethylene, 12, and reticulated filter foam, 14, interchangeably. This method is comprised of selecting foam layers of one or more foam types, densities, and elasticities, closed cell polyethylene, 12 or reticulated filter foam, 14, selecting foam layers of one or more foam thicknesses, selecting whether the foam layers, closed cell polyethylene, 12 or reticulated filter foam, 14, will be laminated to one another with adhesive, 16, laminating foam layers to one another if selected, assembling a plurality of foam layers, comprised of closed cell polyethylene, 12, and reticulated filter foam, 14, with vinyl material, 22, attaching cording with fabric covered cording, 26, and attaching accessories such as nylon strap handle, 32, plastic ring, 34, at each end for an optional shoulder strap, and a mesh pocket comprised of polyester elastic net mesh, 28, pleats, 44, and elastic bands, 42.
Applicants hereby claim priority under all rights to which they are entitled under 35 U.S.C. Section 120 based upon the U.S. Provisional Application Ser. No. 60/606,917 for this patent application filed at the United States Patent and Trademark Office on Sep. 3, 2004.
Number | Date | Country | |
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60606917 | Sep 2004 | US |