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WO2018204565A1 - Coussin - Google Patents

Coussin Download PDF

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Publication number
WO2018204565A1
WO2018204565A1 PCT/US2018/030768 US2018030768W WO2018204565A1 WO 2018204565 A1 WO2018204565 A1 WO 2018204565A1 US 2018030768 W US2018030768 W US 2018030768W WO 2018204565 A1 WO2018204565 A1 WO 2018204565A1
Authority
WO
WIPO (PCT)
Prior art keywords
cushion
springs
tissue
cnf
skeleton
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.)
Ceased
Application number
PCT/US2018/030768
Other languages
English (en)
Inventor
John C. Warner
Justin R. WHITEFIELD
Jennifer Dawn POLLEY
Emily Jennifer STOLER
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.)
Warner Babcock Institute for Green Chemistry LLC
Original Assignee
Warner Babcock Institute for Green Chemistry LLC
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 Warner Babcock Institute for Green Chemistry LLC filed Critical Warner Babcock Institute for Green Chemistry LLC
Publication of WO2018204565A1 publication Critical patent/WO2018204565A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/021—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant characterised by their composition, e.g. comprising materials providing for particular spring properties
    • 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
    • A47C27/04—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with spring inlays
    • A47C27/06—Spring inlays
    • A47C27/065—Spring inlays of special shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/025—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant characterised by having a particular shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F3/00—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic
    • F16F3/02—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction

Definitions

  • Figure 1 illustrates one embodiment of triple-helical spring as described herein.
  • Figure 2 illustrates a second embodiment of a triple-helical spring as described herein.
  • Figure 3 is a top view of a set of spring units joined together to form a skeletal subunit.
  • Figure 4 shows two examples of skeletal subunits.
  • Figure 5 shows schematic diagrams of triple-helical springs described herein.
  • Figure 6 shows the compressibility of different triple-helical springs.
  • Figure 7 is a schematic diagram of different triple-helical springs (72A, 73A1, 73A2, and 73B1).
  • Figure 8 shows the compressibility of triple-helical springs (72A, 73A1, 73A2, and 73B1).
  • Figure 9 is a schematic diagram showing hexagonal lattice grids 73-A3 and 73-B2.
  • Figure 10 shows the compressibility of two spring grids: 73-A3 and 73-B2.
  • Figure 11 shows the compressibility of Hl-based arrays.
  • Figure 12 shows the effect on compressibility of compressed nanofiber (“CNF”) fill.
  • Figure 13 shows the effect on compressibility of CNF:Pulp fill mixtures.
  • Figure 14 shows the effect on compressibility of different CNF:Pulp fill mixtures.
  • Figure 15 shows the effect on compressibility of different CNF:pulp:chitosan fill mixtures.
  • Figure 16 shows the effect of compression cycle and fill material on compressibility and recoil of an unfilled J3 structure.
  • Figure 17 compares the compressibility and recoil of an unfilled J3 structure to J3 structures filled with different materials.
  • Figure 18 compares the compressibility of filled and unfilled J4 structures.
  • Figu re 19 compares the compressibility of unfilled to filled J4 structures.
  • the Pitch of a helical spring is the height of 1 complete loop of the helix.
  • the Pitch Angle of a helical spring is the arc (in degrees) between the vertical axis and the plane of the helix.
  • the mathematical definition of the helix angle is:
  • Angle (°) (180/p)-arctan(2pR/Pitch) where the 180/p converts from radians to degrees.
  • the Radius of a helical spring is the distance between the center vertical axis and perimeter of the circle formed by 1 complete loop of the helix.
  • Support Factor also known as “compression modulus”
  • compression modulus Force required to compress a sample 65% / Force required to compress a sample to 25%.
  • a higher Support Factor equals a firmer cushion.
  • the force is typically expressed as “indentation force” or “IFD” and is measured by compressing a 50" square plate into the cushion.
  • a cushion comprising a skeleton comprising a plurality of
  • biodegradable springs comprising means for connecting at least two of the springs; and a biodegradable tissue; wherein the tissue is disposed in the skeleton .
  • the springs and the connecting means are comprised of the same material.
  • a cushion as described herein will typically have a support factor in the range from about 1.8 to about 2.6.
  • the springs may be printed by a 3-D matrix printer.
  • the springs may be comprised any suitable material.
  • the springs may be comprised of any suitable material which is compatible with 3-D matrix printing. Examples of such materials include polylactic acid (PLA), acrylonitrile butadiene styrene, polylactic acid- polyhyd roxyalkanoate (PLA-PHA), and mixtures thereof.
  • PLA-PHA has a density of about 0.00123 g/mm 3 .
  • the springs are advantageously helical in structu re.
  • Each spring may comprise a single helix, as shown in Fig. 1 and 2, or may comprise multiple helices which are joined together, as shown in Fig. 3 and 4.
  • a spring will comprise no more than six helices; advantageously, the springs may comprise single, double, or triple helices.
  • a schematic diagram showing an exemplary single helix spring is shown in fig. 1. When this spring has a volume of 2,204.14 mm 3 , it will comprise about 2.71 g of PLA-PHA.
  • the springs when compressed by about 65%, the springs recoil about 100%.
  • the springs may be connected by bringing the springs into contact with one another, and then heating the contacting sections of the springs until they melt and fuse.
  • the contacting sections may be treated with a chemical agent which causes the contacting sections to fuse.
  • the springs are connected with biodegradable linkers, which may comprise the same material as the springs, or may be comprised of a different biodegradable material.
  • the cushion described herein further comprises a biodegradable tissue disposed within the skeleton.
  • the biodegradable tissue comprises a low- density, high-void volume material.
  • Suitable low-density, high-void volume materials may comprise one or more of a natural polymer, a synthetic polymer, and a crosslinkable resin.
  • the low-density, high volume material may also comprise a cellulosic material.
  • the cellulosic material is a microfibular cellulose (also known as "cellulose nanofibers"). The cellulosic material may optionally be lyophilized.
  • the tissue may further comprise up to about 15 wt% of chitosan or xylitol.
  • the tissue may further comprise up to about 50 wt% of a filler.
  • the filler may optionally be selected from the group consisting of paper pulp and sawdust.
  • the cushions described herein may further comprise "ligaments," which are means for attaching the tissue to the skeleton.
  • the ligaments can be incorporated into the 3D printing media of the "skeleton” as a second auxiliary small molecule or polymer with reactive groups.
  • the reactive groups bond to the tissue through contact, or by exposure to heat, light, or some other form of energy, or by exposure to a chemical agent.
  • the skeleton contains anhydride or carboxylic acid linkages which could react with the alcohol groups of cellulose in the tissue.
  • the tissue may comprise reactive groups, wherein a secondary additive or chemically functionalized primary tissue component can react with appropriate groups in the primary or auxiliary components of the skeleton.
  • Example 1 characteristics of different triple-helical springs
  • Example 13 Effect on compression cycle and fill material on compressibility and recoil of J3 structure
  • Example 14 Effect on compression cycle and fill material on compressibility and recoil of J3 structure

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials For Medical Uses (AREA)

Abstract

L'invention concerne des ressorts hélicoïdaux triples destinés à être utilisés dans des coussins et des matelas, en variante à un matériau de garnissage en mousse à base de polyuréthane.
PCT/US2018/030768 2017-05-03 2018-05-03 Coussin Ceased WO2018204565A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201762500826P 2017-05-03 2017-05-03
US62/500,826 2017-05-03

Publications (1)

Publication Number Publication Date
WO2018204565A1 true WO2018204565A1 (fr) 2018-11-08

Family

ID=64016661

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2018/030768 Ceased WO2018204565A1 (fr) 2017-05-03 2018-05-03 Coussin

Country Status (1)

Country Link
WO (1) WO2018204565A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3995112A3 (fr) * 2020-10-16 2022-07-27 Accenture Global Solutions Limited Ressorts avec rétroaction de contrainte

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB407630A (en) * 1933-05-11 1934-03-22 Hermann Tausig Improvements in sanitary mattresses
US5652986A (en) * 1995-10-05 1997-08-05 L&P Property Management Company Inner spring mattress having nestable conical springs
US20030171448A1 (en) * 2000-06-15 2003-09-11 Marc Husemann Method for the production of cross-linkable acrylate contact adhesive materials
US20090313764A1 (en) * 2006-06-26 2009-12-24 Latexco Nv Foams formulated with rubber composition based springs
CN103341202A (zh) * 2013-06-17 2013-10-09 江苏迪沃生物制品有限公司 一种壳聚糖海绵体医用敷料及其制备方法
US20150308533A1 (en) * 2014-04-24 2015-10-29 Dreamwell, Ltd. Wave springs and cushioning articles containing the same
US20160229088A1 (en) * 2013-10-09 2016-08-11 Teknologian Tutkimuskeskus Vtt Oy Production of high performance thermoplastic composites

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB407630A (en) * 1933-05-11 1934-03-22 Hermann Tausig Improvements in sanitary mattresses
US5652986A (en) * 1995-10-05 1997-08-05 L&P Property Management Company Inner spring mattress having nestable conical springs
US20030171448A1 (en) * 2000-06-15 2003-09-11 Marc Husemann Method for the production of cross-linkable acrylate contact adhesive materials
US20090313764A1 (en) * 2006-06-26 2009-12-24 Latexco Nv Foams formulated with rubber composition based springs
CN103341202A (zh) * 2013-06-17 2013-10-09 江苏迪沃生物制品有限公司 一种壳聚糖海绵体医用敷料及其制备方法
US20160229088A1 (en) * 2013-10-09 2016-08-11 Teknologian Tutkimuskeskus Vtt Oy Production of high performance thermoplastic composites
US20150308533A1 (en) * 2014-04-24 2015-10-29 Dreamwell, Ltd. Wave springs and cushioning articles containing the same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
QUIEVY, N ET AL.: "Influence of homogenization and drying on the thermal stability of microfibrillated cellulose", POLYMER DEGRADATION AND STABILITY, vol. 95, no. 3, 1 March 2010 (2010-03-01), pages 306 - 314, XP026896607 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3995112A3 (fr) * 2020-10-16 2022-07-27 Accenture Global Solutions Limited Ressorts avec rétroaction de contrainte
US11877937B2 (en) 2020-10-16 2024-01-23 Accenture Global Solutions Limited Springs with strain feedback
US11969362B2 (en) 2020-10-16 2024-04-30 Accenture Global Solutions Limited Upper extremity prosthetic with energy return system

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