US20090058167A1 - Foam seat element, mold for the production thereof and method to manufacture the mold - Google Patents

Foam seat element, mold for the production thereof and method to manufacture the mold Download PDF

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Publication number
US20090058167A1
US20090058167A1 US11/910,423 US91042306A US2009058167A1 US 20090058167 A1 US20090058167 A1 US 20090058167A1 US 91042306 A US91042306 A US 91042306A US 2009058167 A1 US2009058167 A1 US 2009058167A1
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US
United States
Prior art keywords
seat
mold
seat element
present
foam
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/910,423
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English (en)
Inventor
Edgardo A. San Miguel
Robert B. Magee
Leslie E. Clarck
David J. L. Miller
Larry A. Genyn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Woodbridge Foam Corp
Proprietect LP
Patent Administrator Katten Muchin Rosenman LLP
Original Assignee
Patent Administrator Katten Muchin Rosenman LLP
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Patent Administrator Katten Muchin Rosenman LLP filed Critical Patent Administrator Katten Muchin Rosenman LLP
Priority to US11/910,423 priority Critical patent/US20090058167A1/en
Assigned to WOODBRIDGE FOAM CORPORATION reassignment WOODBRIDGE FOAM CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GENYN, LARRY A., CLARK, LESLIE E., MAGEE, ROBERT B., MILLER, DAVID J.L., SAN MIGUEL, EDGARDO A.
Publication of US20090058167A1 publication Critical patent/US20090058167A1/en
Assigned to PROPRIETECT L.P. reassignment PROPRIETECT L.P. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WOODBRIDGE FOAM CORPORATION
Assigned to THE BANK OF NOVA SCOTIA reassignment THE BANK OF NOVA SCOTIA SECURITY AGREEMENT Assignors: PROPRIETECT LP
Abandoned legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/02—Seat parts
    • A47C7/18—Seat parts having foamed material included in cushioning part
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/14—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
    • A47C27/142—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays with projections, depressions or cavities
    • A47C27/146—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays with projections, depressions or cavities on the outside surface of the mattress or cushion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/42—Moulds or cores; Details thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/42—Moulds or cores; Details thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
    • B29C33/424—Moulding surfaces provided with means for marking or patterning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D99/00—Subject matter not provided for in other groups of this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/70—Upholstery springs ; Upholstery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/70—Upholstery springs ; Upholstery
    • B60N2/7017—Upholstery springs ; Upholstery characterised by the manufacturing process; manufacturing upholstery or upholstery springs not otherwise provided for

Definitions

  • the present invention relates to a foam seat element, preferably a foam vehicular seat element. In another of its aspects, the present invention relates to a process for producing a foam seat element, preferably a vehicular seat element. In yet another of its aspects, the present invention relates to a mold for producing a molded element, preferably a molded foam seat element, more preferably a molded foam vehicular seat element. In yet another of its aspects, the present invention relates to a method for producing a mold.
  • Passenger seats in vehicles, such as automobiles, are typically fabricated from a foam (usually a polyurethane foam) material which is molded into the desired shape and covered with an appropriate trim cover.
  • the foamed material is selected to provide passenger comfort by providing a resilient seat and the trim cover is selected to provide the desired aesthetic properties.
  • Dual density or dual firmness seat elements are expensive to produce and, in many cases, alter the feel of the supporting surface of the seat only in areas where it is perceived to be important to have different firmness properties.
  • the conventional dual density or dual firmness seat elements use a generally coarse approach to provision of variable density or firmness.
  • dual (or multi) density or dual (or multi) firmness seats typically require the use of two or more types of foam (e.g., molded, free rise, bead and the like) which are typically produced separately and secured together increasing the production time and costs of the final seat product.
  • certain dual (or multi) firmness seats are made by molding or otherwise securing an insert (e.g., wire components, flexolators and the like) to a foam substrate.
  • the seat element that could be produced from a unitary foam element yet confer the benefits of dual density or dual firmness seats.
  • the present invention provides a seat element comprising a foam substrate and a seating surface element, at least a portion of the seating surface element comprising a plurality of peak portions and a plurality of valley portions.
  • the present invention provides mold for production of a seat element, the mold comprising a first mold portion and a second mold portion engageable to define a mold cavity, the first mold portion having a seating surface molding element comprising a plurality of peak portions and a plurality of valley portions.
  • the present invention provides a method for manufacturing a mold for production of a seat element, the mold comprising a first mold portion and a second mold portion engageable to define a mold cavity, the first mold portion having a first molding surface comprising a seating surface molding element, the seat surface molding element comprising a plurality of peak portions and a plurality of valley portions, the method comprising the steps of:
  • an improved seat element having a seating surface element that incorporates a plurality of peak portions and a plurality of valley portions.
  • the plurality of peak portions and the plurality of valley portions is incorporated in an outermost surface of the seating surface element.
  • the term “outermost surface” is intended to include an area of the seating surface element for contact by and/or support of an occupant of the seat element and does not include, for example, grooves or trenches in which there is disposed a component for attachment of a trim cover.
  • the ratio of the contact surface area (peaks only) of the seating surface element to the surface area of the seating surface element is less than 1.
  • the present seat element comprises a molded foam seat element, more preferably a molded foam element comprising a unitary foam portion.
  • a molded foam element in the present seat element is the presence of a skin on the surface of the seating surface element.
  • the presence of the skin is characterized by the foam having a greater density at the surface (e.g., 1 mm depth) as compared to the central or core region. Density can be determined using ASTM D-3574.
  • the present seat element has a number of advantages, including one or more of the following:
  • FIG. 1 illustrates a schematic top view of a vehicular seat bottom in which a portion of the seating surface has been pressure mapped to denote relative pressure points created by an occupant seated on the vehicular seat bottom;
  • FIG. 2 illustrates a schematic view of an embodiment of pressure mapping a vehicular seat unit
  • FIG. 3 illustrates a first preferred embodiment of a seat element in accordance with the present invention
  • FIG. 4 illustrates a second preferred embodiment of a seat element in accordance with the present invention
  • FIGS. 5 a , 5 b and 5 c each illustrate an enlarged portion of seat element in accordance with the present invention
  • FIGS. 6 a , 6 b , 6 c and 6 d each illustrate various arrangements of the patterns illustrated in FIGS. 5 a , 5 b and 5 c;
  • FIG. 7 illustrates a perspective view of a third preferred embodiment of a seat element in accordance with the present invention.
  • FIG. 8 illustrates a sectional view through line A-A in FIG. 7 ;
  • FIG. 9 illustrates a sectional view through line B-B in FIG. 7 ;
  • FIG. 10 illustrates a sectional view through line C-C in FIG. 7 ;
  • FIGS. 11 a , 11 b and 11 c each illustrate a further embodiment of a textured surface repeating pattern that can be used in the present seat element
  • FIGS. 12-32 illustrate, in a step-wise manner, production of a first mold section to be used in the present mold.
  • FIG. 33 illustrates a perspective view of an embodiment of the present mold.
  • a seat element is comprised in a vehicular or passenger seat.
  • the term “seat” is intended to have its conventional meaning and includes one or both of a bottom or cushion (i.e., the portion of the seat on which the occupant sits) and a back or backrest (i.e., the portion of the seat which supports the back of the occupant).
  • a “seat” includes both a cushion (or bottom) and a back (or backrest).
  • the term “seat” includes a seat element such as a cushion (or bottom), a back (or backrest) or a unit construction comprising a cushion (or bottom) and a back (or backrest). It should also be mentioned that a seat element may be considered to be a cushion (or bottom), a back (or backrest), a headrest and/or an armrest.
  • a vehicular seat element in particular a seat cushion (or bottom)
  • the present seat element can be used in non-vehicular applications such as domestic and office furniture, stadium seating, theatre seating and the like.
  • FIG. 1 there is illustrated a schematic top view of a vehicular seat bottom in which a portion of the seating surface has been pressure mapped to denote relative pressure of an occupant seated on the vehicular seat bottom.
  • the pressure seat map illustrated in FIG. 1 can be generated in a conventional manner within the purview of a person of ordinary skill in the art. Once generated, the pressure map is useful insofar as it illustrates areas of relative pressure on the seating surface that are generated when occupant sits on that surface.
  • FIG. 1 there is illustrated a seat bottom 10 having a pair of winged portions 12 and 14 , and a seating surface 16 .
  • the pressure map comprises three distinct pressure zones: a low pressure zone 17 , a pair of intermediate pressure zones 18 and a pair of high pressure zones 19 .
  • low pressure intermediate pressure
  • high pressure are used in a relative sense and that within each zone there can be some variation in pressure. In a typical pressure map, such variation may be colour coded.
  • FIG. 2 there is illustrated a perspective view of a vehicular seat 20 comprising seat bottom 10 described with reference to FIG. 1 and a seat back 11 connected thereto.
  • the following portions in vehicular seat 20 contain support surfaces in which it may be desirable to manage the response of the surface to pressure from a typical occupant seated in vehicular seat 20 : A, B, C, D and E.
  • the precise location and dimension of these portions of the surface can be determined using pressure mapping technique described above with reference to FIG. 1 .
  • FIGS. 3 and 4 there are illustrated specific embodiments of a seat bottom.
  • similar reference numerals are used as in FIG. 1 .
  • the suffix “a” has been used to denote like elements with respective FIG. 1 .
  • the suffix “b” has been used to denote like elements with respective FIG. 1 .
  • a series of grooves 19 a is molded into seating surface 16 a to provide a managed surface response to relatively high pressure imposed on that portion of seating surface 16 a in response to an occupant seating on seat bottom 10 a .
  • this managed surface response corresponds generally to the location of intermediate pressure zones 18 and high pressure zones 19 generated from the pressure map shown in FIG. 1 .
  • seating surface 16 b includes a plurality of recesses 19 b which are arranged to provide a managed surface response to the portion of seating surface 16 b that is expected to experience a relatively high force in response to an occupant sitting on seating surface 16 b.
  • FIGS. 5 a , 5 b and 5 c there are illustrated cross-sectional views of various preferred embodiments of the portion of the seat element surface on which it is desired to implement a managed surface response. In other words, the remaining portion of the seat element has not been shown for clarity.
  • each peak 105 a comprises a flat apex and each valley 110 a comprises a flat floor (or nadir portion).
  • Peaks 105 a and valleys 110 a combine to define a series of projections 115 a that are generally in the shape of a trapezoid, more particularly, a bi-laterally symmetrical trapezoid.
  • peaks 105 b have a round a pecks whereas valleys 110 b have a rounded floor (or nadir portion). Further, peaks 105 b and valleys 110 b combine to define a series of projections 115 which, in cross-section, are generally bell-shaped.
  • peaks 105 c have a rounded apex whereas valley 110 c have a flat floor (or nadir portion). Further, it will be seen that peaks 105 c and valleys 110 c combine to form a series of projections 115 c that, in cross-section, have a substantially parabolic shape.
  • FIGS. 5 a , 5 b and 5 c are exemplary in nature. Those of skill in the art having in hand the present specification will be able to modify the specifically illustrated embodiments or design other embodiments that have peaks and valleys, and are otherwise useful in the present seat element.
  • FIGS. 6 a , 6 b , 6 c and 6 d there is illustrated, in schematic form, a top view of a seat element in accordance with the present invention.
  • a series of projections is shown as 115 (no suffix). Projections 115 can be of the form illustrated in FIGS. 5 a , 5 b and 5 c or in any other shape projection that provides a desirable managed surface response.
  • FIG. 6 a illustrates projections 115 in a parallel row or radiator-type arrangement.
  • FIG. 6 b illustrates projections 115 in a diagonal arrangement.
  • FIG. 6 c illustrates projections 115 in a checkerboard-type arrangement and
  • FIG. 6 d illustrates projections 115 in a diamond-type pattern.
  • FIGS. 7-10 there is illustrated a preferred seat bottom 150 having multiple sections that provide a managed surface response.
  • seat bottom 150 comprises a unitary foam element 152 that can be made from polyurethane foam, polypropylene foam, polyethylene foam and the like (polyurethane foam is the most preferred foam).
  • Seat bottom 150 comprises a primary seating surface 154 .
  • Primary seating surface 154 comprises a first textured surface 160 , a second textured surface 170 and third textured surface 180 .
  • Seat bottom 150 further comprises a pair of winged portions 156 , 158 .
  • Each winged portion 156 , 158 comprises a fourth textured surface 190 .
  • First textured surface 160 comprises projections similar to projections 115 a in FIG. 5 a arranged in a pattern similar to the one illustrated in FIG. 6 a.
  • Second textured surface 170 comprises a series of projections that have a substantial rectangular shape in a pattern such as the one illustrated in FIG. 6 c.
  • Third textured surface 180 comprises a series of projections made up of peaks having a generally flat apex 181 and a series of valleys having a rounded floor 182 (or nadir portion) arranged in a pattern similar to that shown in FIG. 6 b . It will be noted that the depth of valleys 182 increases from the middle of seating surface 154 to the periphery thereof.
  • Fourth textured surface 190 is disposed on each of winged portions 156 , 158 and runs along the length of first textured surface 160 and second textured surface 170 .
  • Forth textured surface 190 comprises two rows of cup-shaped portions having a rounded valley 191 (or nadir portion).
  • Seat bottom 150 further comprises a series of grooves 159 which serves to isolate first textured surface 160 , second textured surface 170 , third textured surface 180 and fourth textured surface 190 .
  • series of grooves 159 also serves to have disposed therein a suitable trim cover attachment system (e.g., hog-ring wires, touch fasteners such as VelcroTM-type fasteners, mechanical clips and the like).
  • FIG. 11 a illustrates an enlarged perspective view of a textured surface 100 d comprising a series of semi-spheroid shaped projections 115 d .
  • Projections 115 d comprise rounded peaks 105 d and a substantially continuous floor 110 d which act as a “valley”.
  • FIG. 11 b illustrates an enlarged perspective view of a textured surface 100 e comprising a series of elongate projections 115 e .
  • Projections 115 d comprise elongate flat peaks 105 e and a substantially elongate round floor 110 e.
  • FIG. 11 c illustrates an enlarged perspective view of a textured surface 100 f comprising a series of projections 115 f .
  • Projections 115 f comprise flat peaks 105 e and a substantially ogival or rounded valley (or nadir portion) 110 e.
  • FIGS. 12-32 there is illustrated a stepwise process to producing mold capable of forming a seat element having a textures surface such as shown in FIG. 3 described above.
  • a machined master form 200 is produced in a conventional manner (typically from aluminum, wood or any other sufficiently durable material).
  • Machined master form 200 has a negative of the desired texture surface to be conveyed to the seat element.
  • machined master form 200 is disposed in a container 205 comprising a base 210 and a pair of side walls 215 .
  • a resin (e.g., urethane, silicone and the like) composition 220 is dispensed atop machined master form 200 in a conventional manner.
  • epoxy resin 220 After epoxy resin 220 has cured, it is removed from machined master form 200 to yield a cast resin form 225 having the textured surface to be conveyed to the product eventually to be molded—see FIG. 14 .
  • Cast resin form 225 is placed in container 225 (or another container).
  • a urethane-forming mixture 230 is dispensed atop as resin form 225 in a conventional manner.
  • Urethane forming mixture 230 is allowed to cure and is thereafter removed from container 200 to yield urethane mat 235 which has the same textured surface as machined master form 200 —see FIG. 16 .
  • Model 240 of the finished seat element is constructed without the textured surface.
  • Model 240 may be constructed from wood or any other material that is sufficiently durable to withstand the mold manufacturing process.
  • model 240 is mounted on a follow board 245 having a seal block area 250 .
  • model 240 mounted on follow board 245 is than placed in a containment box 255 .
  • model 240 the exposed surfaces of model 240 , follow board 245 , seal block 250 and a portion of containment box 255 are covered with a layer of plaster (or other curable) material 260 .
  • plaster material 260 Once plaster material 260 has cured (or otherwise requires sufficient integrity to be handled), follow board 245 , seal block 250 and containment box 255 are removed while leaving model 240 with plaster composition 260 —see FIG. 21 .
  • a lid containment box 265 is placed around the marginal edges of plaster composition 260 .
  • plaster (or other curable) composition 270 is dispensed on exposed portions of model 240 , plaster composition 260 and a portion of lid containment box 265 —see FIG. 23 .
  • plaster composition 270 has been cured (or otherwise acquires sufficient integrity)
  • the bowl pattern formed by plaster composition 260 is separated from the lid pattern form by plaster composition 270 and model 240 is removed.
  • mat 235 ( FIG. 16 ) is disposed as illustrated in the bowl pattern formed by plaster composition 260 .
  • a foundry containment box 275 is disposed around the marginal edges of the bowl formed by plaster composition 260 —see FIG. 25 .
  • a sand-based (or plaster-based) foundry composition 280 is dispensed in the bowl formed by plaster composition 260 and is contained within foundry containment box 275 .
  • a clay (or other malleable) composition 285 is applied over the surface of sand-based foundry composition 280 at a thickness equivalent to the desired thickness of the mold to be manufactured.
  • a foundry containment box 290 is placed around sand-based foundry composition 280 and further sand-based foundry composition 295 is placed atop the exposed portions of clay composition 285 , sand-based foundry composition 280 and exposed portions of foundry composition 290 —see FIG. 28 .
  • sand-based foundry composition 295 once sand-based foundry composition 295 has cured, it is separated from foundry containment box 290 , clay composition 285 and sand-based foundry composition 280 .
  • sand-based foundry compositions 280 and 295 are recombined to define a mold cavity 297 —see FIG. 30 .
  • An aperture 293 or other port is drilled or otherwise created in the form produced by sand-based foundry composition 295 and molten aluminum 299 is dispensed therethrough using a conventional gating system to fill mold cavity 297 .
  • Molten aluminum 299 is allowed to cool after which sand-based foundry compositions 280 and 295 are broken away thereby yielding lower mold section 300 —see FIGS. 31 and 32 .
  • FIGS. 17-30 may be repeated to produce a lid portion 305 of the mold shown in FIG. 33 .
  • the form produced by plaster composition 270 may be used in steps such as those appearing in FIGS. 25 (excluding insert 235 ) and 27 - 30 . If it is not desired to have a textured surface produced by lid portion 305 of the mold shown in FIG. 33 , the use of mat 235 is not necessary in the production of lid portion 305 .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Manufacturing & Machinery (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Seats For Vehicles (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
  • Laminated Bodies (AREA)
US11/910,423 2005-03-30 2006-03-30 Foam seat element, mold for the production thereof and method to manufacture the mold Abandoned US20090058167A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US11/910,423 US20090058167A1 (en) 2005-03-30 2006-03-30 Foam seat element, mold for the production thereof and method to manufacture the mold

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US66619505P 2005-03-30 2005-03-30
PCT/CA2006/000471 WO2006102751A1 (en) 2005-03-30 2006-03-30 Foam seat element, mold for the production thereof and method to manufacture the mold
US11/910,423 US20090058167A1 (en) 2005-03-30 2006-03-30 Foam seat element, mold for the production thereof and method to manufacture the mold

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2006/000471 A-371-Of-International WO2006102751A1 (en) 2005-03-30 2006-03-30 Foam seat element, mold for the production thereof and method to manufacture the mold

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13/487,676 Continuation US8821777B2 (en) 2005-03-30 2012-06-04 Foam seat element, mold for the production thereof and method to manufacture the mold

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Publication Number Publication Date
US20090058167A1 true US20090058167A1 (en) 2009-03-05

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US11/910,423 Abandoned US20090058167A1 (en) 2005-03-30 2006-03-30 Foam seat element, mold for the production thereof and method to manufacture the mold
US13/487,676 Active US8821777B2 (en) 2005-03-30 2012-06-04 Foam seat element, mold for the production thereof and method to manufacture the mold
US14/469,813 Expired - Fee Related US10492612B2 (en) 2005-03-30 2014-08-27 Foam seat element, mold for the production thereof and method to manufacture the mold

Family Applications After (2)

Application Number Title Priority Date Filing Date
US13/487,676 Active US8821777B2 (en) 2005-03-30 2012-06-04 Foam seat element, mold for the production thereof and method to manufacture the mold
US14/469,813 Expired - Fee Related US10492612B2 (en) 2005-03-30 2014-08-27 Foam seat element, mold for the production thereof and method to manufacture the mold

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US (3) US20090058167A1 (hu)
EP (1) EP1871197B1 (hu)
JP (1) JP5139261B2 (hu)
KR (1) KR101247848B1 (hu)
CN (1) CN101150973B (hu)
ES (1) ES2911257T3 (hu)
HU (1) HUE058795T2 (hu)
MX (1) MX2007012115A (hu)
PL (1) PL1871197T3 (hu)
SI (1) SI1871197T1 (hu)
WO (1) WO2006102751A1 (hu)

Cited By (9)

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US20100314929A1 (en) * 2009-06-10 2010-12-16 Hsu Tsung-Yung Seat cushion structure
US20130181499A1 (en) * 2010-09-24 2013-07-18 Bridgestone Corporation Seat pad and method for manufacturing the same
US20150121626A1 (en) * 2013-11-04 2015-05-07 John Raymond Carver Self-Adjusting Neck Brace Pillow For Back Sleepers
US20150130237A1 (en) * 2012-04-23 2015-05-14 Toyota Jidosha Kabushiki Kaisha Seat for moving body
US20160114712A1 (en) * 2013-05-23 2016-04-28 Proprietect L.P. Padded Element, and Process and Mold for Producing Same
US9327630B1 (en) * 2014-10-28 2016-05-03 Toyota Motor Engineering & Manufacturing North America, Inc. Seat back cushion for a vehicle
US10173566B2 (en) * 2015-01-19 2019-01-08 Bridgestone Corporation Seat pad
US10328825B2 (en) * 2014-07-08 2019-06-25 Toyota Jidosha Kabushiki Kaisha Vehicle seat
US20240000237A1 (en) * 2023-09-20 2024-01-04 Yi Zhang Memory foam cushion body and memory foam seat cushion

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US7934774B2 (en) 2006-03-31 2011-05-03 Lear Corporation Vehicle seat assembly having a hardness gradient
US7661764B2 (en) 2006-08-30 2010-02-16 Lear Corporation Vehicle seat assembly having a hardness gradient via “A” surface intrusions and/or protrusions
GB2441418A (en) * 2006-08-30 2008-03-05 Lear Corp Vehicle seat cushion with holes to make regions of the cushion softer than others
DE202007004929U1 (de) 2007-04-02 2008-08-07 Proseat Gmbh & Co. Kg Sitzelement für einen Sitz
JP5242088B2 (ja) * 2007-06-27 2013-07-24 株式会社イノアックコーポレーション 自動車用座席のクッション
JP4293281B1 (ja) * 2007-07-23 2009-07-08 株式会社ブリヂストン 車両用シートパッド及び車両用シート
JP2009023596A (ja) * 2007-07-23 2009-02-05 Bridgestone Corp 車両用シートパッド
JP2009061687A (ja) * 2007-09-06 2009-03-26 Bridgestone Corp 成形用金型及び樹脂発泡成形体の成形方法
JP2009078142A (ja) * 2007-09-06 2009-04-16 Bridgestone Corp 車両用シートパッド及びその製造方法
JP2010184085A (ja) * 2009-02-13 2010-08-26 Bridgestone Corp 車両用シートパッド
DE102009057072B4 (de) 2009-12-04 2016-08-11 Grammer Aktiengesellschaft Polster mit Belüftung für einen Fahrzeugsitz
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US20120235321A1 (en) 2012-09-20
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US10492612B2 (en) 2019-12-03
KR101247848B1 (ko) 2013-03-26
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US8821777B2 (en) 2014-09-02
EP1871197A1 (en) 2008-01-02

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