WO2018204565A1 - Coussin - Google Patents
Coussin Download PDFInfo
- 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
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.
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 WO2018204565A1 (fr) | 2017-05-03 | 2018-05-03 | Coussin |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2018204565A1 (fr) |
Cited By (1)
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)
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 |
-
2018
- 2018-05-03 WO PCT/US2018/030768 patent/WO2018204565A1/fr active Application Filing
Patent Citations (7)
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)
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)
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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