US20070143927A1 - Cushion and method of evaluating the cushion - Google Patents

Cushion and method of evaluating the cushion Download PDF

Info

Publication number
US20070143927A1
US20070143927A1 US10/550,513 US55051303A US2007143927A1 US 20070143927 A1 US20070143927 A1 US 20070143927A1 US 55051303 A US55051303 A US 55051303A US 2007143927 A1 US2007143927 A1 US 2007143927A1
Authority
US
United States
Prior art keywords
cushion
floor
sitting
buttocks
legs
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
US10/550,513
Other languages
English (en)
Inventor
Kageyu Noro
Hideki Oyama
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.)
ErgoSeating Co Ltd
Original Assignee
ErgoSeating Co Ltd
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 ErgoSeating Co Ltd filed Critical ErgoSeating Co Ltd
Assigned to ERGOSEATING CO., LTD reassignment ERGOSEATING CO., LTD ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: NORO, KAGEYU, OYAMA, HIDEKI
Publication of US20070143927A1 publication Critical patent/US20070143927A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/16—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats of legless type, e.g. with seat directly resting on the floor; Hassocks; Pouffes
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C15/00—Other seating furniture
    • A47C15/004—Seating furniture for specified purposes not covered by main groups A47C1/00 or A47C9/00
    • 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
    • A47C27/08—Fluid mattresses or cushions
    • A47C27/086—Fluid mattresses or cushions with fluid-like particles, e.g. filled with beads
    • 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
    • A47C27/12—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with fibrous inlays, e.g. made of wool, of cotton
    • A47C27/122—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with fibrous inlays, e.g. made of wool, of cotton with special fibres, such as acrylic thread, coconut, horsehair
    • 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
    • A47C7/021—Detachable or loose seat cushions
    • 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
    • A47C7/029—Seat parts of non-adjustable shape adapted to a user contour or ergonomic seating positions

Definitions

  • the current invention relates to a floor-cushion that enables a person who sits thereon to correct the sitter's posture.
  • cushions made by the above-mentioned conventional technique have the following disadvantages/problems: (1) if a person sits on such a floor-cushion for a long time, muscular fatigue results due to resiliency of the cushion's hard part, which supports the buttocks; and (2) the effective area of the cushion's hard part that is to sustain the load from the buttocks becomes small, particularly if the form of the hard part does not fit the buttocks, and, as a result, such a floor-cushion does not support the buttocks properly over an extended period of time.
  • the present invention has been made in view of the above problems, and it incorporates research results based on data that we obtained through our extensive ergonomic experiments.
  • the purpose of the current invention is to provide (1) a floor-cushion that is constituted in such a way that (a) its rear portion, on which the sitter's buttocks are placed, is thicker than its front portion, on which the sitter's legs are crossed or placed, in order that the rear portion that supports the buttocks is higher than the front side, so that the sitter can comfortably maintain correct posture of the spine (i.e., a proper S-curve of the spine), and (b) the floor-cushion has a large area for supporting the buttocks, which gives the floor-cushion such variability in its form that it fits the form and structure of different individuals' buttocks, enabling the sitting load to be uniformly applied across the broad area of the buttocks, so that muscle fatigue rarely results, even when the person sits for a long time; and (2) methods of evaluating such a
  • the invention relates to a floor-cushion, covered with a floor-cushion bag.
  • the floor-cushion is divided into a rear portion that supports the buttocks and a front portion on which the sitter's legs are crossed or placed.
  • the floor-cushion bag is correspondingly divided into rear and front portions.
  • the buttocks-supporting portion is filled with cork chips.
  • the inside of the legs-crossed portion consists of two soft-foam resin layers that enwrap a hard-foam resin layer, thus creating a three-layered structure for the legs-crossed portion.
  • the buttocks-supporting portion is thicker than the legs-crossed portion, and it slants downward toward the legs-crossed portion, so that anteversion of the pelvis is promoted.
  • Another aspect of the invention relates to a floor-cushion wherein the hard-foam resin layer of the legs-crossed portion is a plate-like, hard-polyurethane layer, and the surrounding soft-foam resin is a soft polyester foam.
  • Another aspect of the invention relates to a floor-cushion wherein the anteversion angle of the top of the buttocks-supporting portion is 5 degrees to 30 degrees on average.
  • Another aspect of the invention relates to a floor-cushion wherein the cork chips occupy 20%-25% of the space of the buttocks-supporting portion.
  • Another aspect of the invention relates to a floor-cushion wherein the shape of the floor-cushion is basically heart-like, with the wider, front area of the “heart” being the thick, buttocks-supporting portion, while the narrower, rear area of the “heart” is the legs-crossed portion, and with the area occupied by a floor-cushion intended for females being larger than that of a floor cushion intended for males.
  • a method of evaluating a floor-cushion is made based on: (1) a short-time sitting simulation that includes (i) measurement of the pelvic-inclination angle, (ii) VTR filming thereof, and (iii) the sitter's evaluation of his/her sensory experience of sitting comfort, (2) a long-time sitting simulation that includes (i) measurement of variations in a sitter's pelvic-inclination angle, (ii) VTR filming of the sitting, (iii) frequency analysis of the pelvic-inclination angles as determined in (i) above, and (iv) the sitter's evaluation of his/her sensory experience of a feeling of fatigue at preselected places in the body; as well as (3) information obtained via questionnaires completed by various people, including Europeans and Americans.
  • Another aspect of the invention relates to a method of evaluating a floor-cushion, wherein the measurement of the pelvic-inclination angle is done in the following way: each of a predetermined number of test subjects wears a pelvic-inclination-angle sensor belt, whereby each person's pelvic-inclination angle is measured while the person is sitting on a commercially available floor-cushion and while sitting on the floor-cushion of this invention.
  • Another aspect of the invention relates to a method of evaluating a floor-cushion, wherein after the sensory-experience evaluation of sitting comfort is done in such a way that there is created a radar chart that shows extracted factors obtained by processing the collected data regarding assessment items—using the ANOVA (analysis of variance) method—so that the subjective assessments made by the test subjects during the sensory-experience evaluations can be utilized.
  • ANOVA analysis of variance
  • Another aspect of the invention relates to a method of evaluating a floor-cushion, wherein the pelvic-inclination angle in the long-time sitting is measured three times, i.e., at the start of sitting, 20 minutes after the start of sitting, and 40 minutes after the start of sitting, for the aforementioned predetermined parts of the sitter's body.
  • Another aspect of the invention relates to a method of evaluating a floor-cushion, wherein the pelvic-inclination angle is evaluated in such a way that the pelvic-inclination angle data is subjected to a frequency analysis, using a time-series-analysis model formula.
  • FIG. 1 shows a floor-cushion in one embodiment of the present invention
  • (a) is an entire perspective view
  • (b) is a side cross-sectional view.
  • FIG. 2 is contains plane views showing two types (Type-A and Type-B) of the floor-cushion shown in FIG. 1 .
  • FIG. 3 shows typical postures using a floor-cushion: (a) using the floor-cushion shown in FIG. 1 ; (b) using a conventional one.
  • FIG. 4 compares the pelvic-inclination angles when using the floor-cushion shown in FIG. 1 and when using a conventional one.
  • FIG. 5 is a radar chart that compares the results of sensory-experience evaluations of two types (Type A and Type B) of the floor cushion shown in FIG. 1 with the results of such evaluations of a conventional floor cushion.
  • FIG. 6 shows the results of one man's and one woman's sensory-experience evaluations of their comfort while stretching their backs while sitting on the two types (Type A and Type B) of the floor-cushion shown in FIG. 1 , and while sitting on a conventional floor-cushion.
  • FIG. 7 shows the results of one man's and one woman's sensory-experience evaluations of their sitting comfort while sitting on the floor-cushion shown in FIG. 1 , and while sitting on a conventional floor-cushion.
  • FIG. 8 compares typical variations in a test subject's pelvic-inclination angle (forward/backward) and changes in posture over a 40-minute period while using the floor-cushion shown in FIG. 1 and while using a conventional cushion.
  • FIG. 9 compares the average variation in younger test subjects pelvic-inclination angle (forward/backward) over a 40-minute period while using the floor-cushion shown in FIG. 1 and while using a conventional cushion.
  • FIG. 10 compares the frequency-analysis results of a test subject's pelvic-inclination angle's (forward/backward) vibration, at 5 minutes and 15 minutes after the start of sitting, while using the floor-cushion shown in FIG. 1 and while using a conventional cushion.
  • FIG. 11 compares the results of a sensory-experience evaluation of feeling of fatigue at various places of test subjects body while using the floor-cushion shown in FIG. 1 (referred to as “ergo” in FIG. 11 ) and a conventional cushion (referred to as “normal” in the Figure.)”
  • FIG. 12 shows Westerners' subjective evaluations of sitting on the floor-cushion shown in FIG. 1 .
  • the floor-cushion 1 of the current invention is divided into a buttocks-supporting portion 1 A and a legs-crossed portion 1 B.
  • the buttocks-supporting portion 1 A is filled with cork chips 2 , which are either (a) directly placed therein, or (b) placed inside an inner bag that is placed therein, while the legs-crossed portion 1 B has a three-layered structure consisting of a hard-foam resin layer 3 and two soft-foam resin layers 4 that surround the hard-foam resin layer 3 .
  • the buttocks-supporting portion 1 A of the floor-cushion of the current invention is thicker than the legs-crossed portion 1 B, so that the buttocks-supporting portion 1 A inclines toward the legs-crossed portion 1 B in such a way that forward inclination of the pelvis is promoted.
  • the average thickness of the buttocks-supporting portion 1 A is 6 cm.
  • the material of the hard-foam resin layer 3 is a plate-like hard-polyurethane layer, while the material of the soft-foam resin layer 4 is a soft-foam polyester. It is desirable that the forward-inclination angle of the top surface of the buttocks-supporting, portion 1 A be 5 degrees-30 degrees on average. Further, the cork chips 2 in the buttocks-supporting portion should occupy 20%-25% of the inner volume of the buttocks-supporting portion, and the diameter of a cork chip should be about 0.2 cm on average. (Here, natural cork chips are used; however, any one of a variety of other substitute materials—such as artificial cork that has been developed recently—can of course be used.)
  • drawings A and B show two types of floor cushions: Type-A, which is intended for a woman, and Type B, which is intended for a man.
  • the rear portion of the floor-cushion of the current invention has a thick, inclined part (the brand name of which is Pelvic Support) that promotes the forward inclination of a sitter's pelvis, as shown in FIG. 3 ( a ).
  • a person's pelvic-inclination angle indicates the load applied on the person's lumbar portion, such that (1) the load on one's backbone is small when the pelvis is maintained slightly forwardly inclined or without being inclined either forward or backward, and (2) scoliokyphosis is worsened when the pelvis is inclined backward.
  • the inclination-angle sensor that was used was small (36 mm by 36 mm) and lightweight (50 g). Its measurement error is ⁇ 0.5 degrees, and the measured data was A/D converted and recorded in a PC. Simultaneously, changes in the posture of the test subject were video-recorded from one side, using a digital video camera.
  • the sampling interval for measuring the inclination angle of the pelvis was set at 1 second; the output (value) of the sensor when the test subject was standing was set to a reference value of 0 degrees, and the backward inclination was set as positive.
  • the test subjects were adults—1 man and 1 woman—of average height (male: 170 cm; female: 160 cm) (see FIG. 4 ).
  • a total of 36 inquiry items were prepared, including (1) whether the size of the floor-cushion felt good, (2) whether the floor-cushion felt comfortable for one's buttocks, (3) whether the floor-cushion felt comfortable for one's thighs and lower legs, (4) whether one felt that one could easily stretch one's back while sitting on the floor-cushion, and (5) whether one felt that one was sliding down and forward while sitting on the floor-cushion.
  • the inquiry items were evaluated on a scale of five (5) grades.
  • the backward inclination of the pelvis was about 10 degrees less than that when the conventional floor-cushion was used.
  • VTR monitoring revealed that the back of the test subject curved backward when the conventional floor-cushion was used [see FIG. 3 ( b )], while the back stretched upward when the floor-cushion 1 (Type-A) was used.
  • Factor 1 was defined as “factor relating to the hardness of the buttocks-supporting portion of the cushion and how easily one could stretch one's back.”
  • Factor 2 was defined as “factor relating to sitting comfort,”
  • Factor 3 was defined as “factor relating to the test subject's feeling of “having gotten clung” by the cushion, i.e., that the floor-cushion was clinging to his/her buttocks and/or legs.
  • the degree of fatigue felt by a test-subject at different parts of his/her body was evaluated—using a questionnaire given to him/her—at three times: (1) at the start of sitting, (2) 20 minutes after the start of sitting, and (3) 40 minutes after the start of sitting.
  • a total of 14 parts of a subject's body were designated as places at which the degree of feeling of fatigue would be measured: head, neck, shoulders, upper arms, elbows, forearms, abdomen, upper back, lumbar portion, buttocks, thighs, knees, shanks, and feet.
  • Evaluations were made using a scale of seven (7) grades, and measurement was done on a randomized basis, taking a sufficient amount of time.
  • test subjects were 7 men: 6 university students (average age: 24) and 1 university faculty member (age: 65).
  • test subjects watched a video movie while sitting on a floor-cushion in a crossed-leg posture.
  • the sitting time was limited to 20 minutes for the 65-year-old man, because of our concern that it would be too difficult for him to continue sitting in a cross-legged posture for a longer time.
  • FIG. 8 shows the results of a collation (i.e., matching) between (1) time-dependent variations in the forward-/backward-inclination angle of the pelvis and (2) changes in posture, both when the Type-A floor-cushion 1 of the invention was used and when the conventional floor-cushion was used.
  • a collation i.e., matching
  • the pelvis gradually inclined backward as time passed
  • the pelvis inclined backward within a range of 23 degrees-29 degrees
  • the backward-inclination angle of the pelvis was in the range of 22 degrees-24 degrees, which is a smaller range than that when the conventional floor-cushion was used.
  • the posture-variation pattern arose about 5 minutes after the start of sitting when the conventional floor-cushion was used, while it did not arise until about 15 minutes after the start of sitting when the Type-A floor-cushion 1 was used.
  • the pelvic-inclination angle data was frequency-analyzed using an AR model, which is one type of time-series analysis model.
  • FIG. 10 shows results of frequency analysis of data obtained at 5 minutes and 15 minutes after the start of sitting, when the test subject was the 65-year-old male.
  • the conventional floor-cushion at 5 minutes there arose large, high-frequency-spectrum components, which means fast motion. Furthermore, the amplitude (power) of the vibration when the conventional floor-cushion was used was by far larger overall than when the Type-A floor cushion 1 was used. (Note that ordinal scale of conventional floor-cushion differs from that of Type-A floor-cushion 1 .)
  • the degree of feeling of fatigue was generally less when the Type-A floor-cushion 1 (referred to as “ergo” in FIG. 11 ) was used than when the conventional floor-cushion (referred to as “conventional” in FIG. 11 ) was used. Then, a two-way layout ANOVA regarding the accumulated scores concerning feeling of fatigue was performed as to the types of floor-cushion (Type-A of the current invention and conventional) and elapsed time (three time points: starting time, 20 minutes thereafter, and 40 minutes after the start of sitting.)
  • FIG. 12 shows the averaged results of European and American sitters' five-level subjective evaluations—where “5” is the best score—of the floor-cushion 1 with regard to the following three items: (1) “Is the size of the cushion appropriate?—Suitability of size,” (2) “Can the back be easily straightened?—Ease of straightening the back,” and (3) “Is the cushion comfortable to sit on?—Sitting comfort.”
  • the present applicant has developed a novel floor-cushion incorporating Pelvic Support, for the purpose of preventing kyphosis caused by the backward inclination of the pelvis that would occur while sitting “flatly,” i.e., in a position such that one's buttocks are not raised slightly.
  • the present applicant has measured the inclination angles of the pelvises of various sitters (test subjects), has analyzed the sitters' actions as recorded by a VTR, and has obtained, by sensory-experience reports, the sitters' subjective evaluations of both sitting comfort and feeling of fatigue.
  • the research conducted has revealed that the floor-cushion 1 of the current invention has advantages over a conventional floor-cushion in regard to the following factors.
  • Inclination angle of the pelvis The backward inclination of the pelvis is reduced by 5 degrees-10 degrees, so that the back is more easily stretched upward and the sitter's posture is stabilized.
  • Sitter's action Sitting-resultant actions, such as changing position (resettling) occur less often, and sitters are more easily able to maintain a stable posture.
  • the floor-cushion 1 of the current invention is a useful tool that supports a traditional floor-sitting posture and that promotes healthy and comfortable sitting.
  • the above-mentioned results of simulations and product-evaluation methods can be merchandized all together in the form of software for designing and manufacturing a commercial product that is named Ergo-Zabuton, as a part of an entire floor-cushion production system. Also, the above-mentioned results are very useful as sales-promotion data.
  • the current invention is a floor-cushion whose inside is divided into a buttocks-supporting portion and a legs-crossed portion, with the buttocks-supporting portion filled with cork chips, while in the legs-crossed portion a hard-foam resin layer is enwrapped by two soft-foam resin layers, so that the legs-crossed portion has a three-layer structure.
  • the rear end of the floor-cushion is made thicker in such a manner that the buttocks-supporting portion inclines downward toward the legs-crossed portion, so as to promote forward inclination of the pelvis, so that a sitter's backbone can be maintained in the proper posture.
  • the rear portion of the floor-cushion is made thicker in such a manner that the portion contacting the buttocks is higher than the cushion's front, legs-crossed portion.
  • the elasticity of the cork chips enables the floor-cushion's shape to be varied so as to fit the shape and structure of the buttocks of each individual, so that the sitting load is evenly distributed across a wide area of the buttocks. Therefore, the current invention has such an excellent effect that muscle fatigue is minimized even during long-time sitting.

Landscapes

  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
US10/550,513 2003-03-26 2003-09-26 Cushion and method of evaluating the cushion Abandoned US20070143927A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2003-085794 2003-03-26
JP2003085794A JP2004290370A (ja) 2003-03-26 2003-03-26 座布団およびその評価方法
PCT/JP2003/012363 WO2004084679A1 (ja) 2003-03-26 2003-09-26 座布団およびその評価方法

Publications (1)

Publication Number Publication Date
US20070143927A1 true US20070143927A1 (en) 2007-06-28

Family

ID=33095041

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/550,513 Abandoned US20070143927A1 (en) 2003-03-26 2003-09-26 Cushion and method of evaluating the cushion

Country Status (4)

Country Link
US (1) US20070143927A1 (ja)
JP (1) JP2004290370A (ja)
AU (1) AU2003266656A1 (ja)
WO (1) WO2004084679A1 (ja)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011075771A1 (en) * 2009-12-22 2011-06-30 Gregory Commercial Furniture Pty Limited Seat cushion
US20110296607A1 (en) * 2009-02-20 2011-12-08 Koninklijke Philips Electronics N.V. System and method for bed height adjustment
US8875330B2 (en) * 2012-12-06 2014-11-04 Nikesha Nicole Wallace Child safety and support pillow device
US8902159B1 (en) 2012-07-24 2014-12-02 John Matthews Ergonomic support apparatus having situational sensory augmentation
USD756148S1 (en) * 2014-09-18 2016-05-17 Stadium Buttz, LLC Strap on contoured stadium cushion
USD756147S1 (en) * 2014-09-18 2016-05-17 Stadium Buttz, LLC Strap on rounded stadium cushion
USD787232S1 (en) * 2015-08-27 2017-05-23 Alivia Kassab Arabo Pillow
US9700147B2 (en) * 2012-08-15 2017-07-11 Loan Kim Thi Pham Sitting device for prevention of spinal diseases
USD815861S1 (en) 2016-12-12 2018-04-24 Alivia Kassab Arabo Memory pillow
USD844346S1 (en) * 2018-01-29 2019-04-02 Shenzhen Lian Da Technology Industrial Co., Ltd. Lumbar cushion
US10869566B2 (en) 2013-10-28 2020-12-22 Alivia Kassab Arabo Miniaturized travel cushion having inner opposing ledge configurations for providing spacing for a wearer's ears along with secondary directed pressure generating portions for treatment of trapezius back muscles
USD944035S1 (en) * 2020-09-17 2022-02-22 Jingang YANG Pillow
USD1024618S1 (en) * 2024-01-22 2024-04-30 Xiaoyan Ye Cushion

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100908294B1 (ko) 2007-09-28 2009-07-17 안재홍 앉은 자세 교정 기구
JP5622857B2 (ja) * 2010-09-15 2014-11-12 川邉　研次 座位姿勢矯正座具

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0568358U (ja) * 1991-11-11 1993-09-17 株式会社グローバルサービス 座布団
US5613257A (en) * 1992-02-20 1997-03-25 Graebe; Robert H. Modular cushion construction with detachable pommel
JPH0679349U (ja) * 1993-04-28 1994-11-08 文雄 淺野 座蒲団
JPH11155696A (ja) * 1997-11-27 1999-06-15 Kokichi Ishida 座布団
JP3063421U (ja) * 1998-04-29 1999-11-05 元 植 申 脊椎保護矯正式左右均衡座布団
JP2001190384A (ja) * 1999-08-11 2001-07-17 Natural Foods & Life:Kk 抱き蒲団
JP3843739B2 (ja) * 2001-02-28 2006-11-08 トヨタ紡織株式会社 カスタマイズシートを製造するためのロボットシート

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110296607A1 (en) * 2009-02-20 2011-12-08 Koninklijke Philips Electronics N.V. System and method for bed height adjustment
AU2019202821B2 (en) * 2009-12-22 2020-02-27 Gregory Commercial Furniture Pty Limited Seat cushion
WO2011075771A1 (en) * 2009-12-22 2011-06-30 Gregory Commercial Furniture Pty Limited Seat cushion
US8902159B1 (en) 2012-07-24 2014-12-02 John Matthews Ergonomic support apparatus having situational sensory augmentation
US9700147B2 (en) * 2012-08-15 2017-07-11 Loan Kim Thi Pham Sitting device for prevention of spinal diseases
US8875330B2 (en) * 2012-12-06 2014-11-04 Nikesha Nicole Wallace Child safety and support pillow device
US10869566B2 (en) 2013-10-28 2020-12-22 Alivia Kassab Arabo Miniaturized travel cushion having inner opposing ledge configurations for providing spacing for a wearer's ears along with secondary directed pressure generating portions for treatment of trapezius back muscles
USD756148S1 (en) * 2014-09-18 2016-05-17 Stadium Buttz, LLC Strap on contoured stadium cushion
USD756147S1 (en) * 2014-09-18 2016-05-17 Stadium Buttz, LLC Strap on rounded stadium cushion
USD787232S1 (en) * 2015-08-27 2017-05-23 Alivia Kassab Arabo Pillow
USD815861S1 (en) 2016-12-12 2018-04-24 Alivia Kassab Arabo Memory pillow
USD844346S1 (en) * 2018-01-29 2019-04-02 Shenzhen Lian Da Technology Industrial Co., Ltd. Lumbar cushion
USD944035S1 (en) * 2020-09-17 2022-02-22 Jingang YANG Pillow
USD1024618S1 (en) * 2024-01-22 2024-04-30 Xiaoyan Ye Cushion

Also Published As

Publication number Publication date
JP2004290370A (ja) 2004-10-21
AU2003266656A1 (en) 2004-10-18
WO2004084679A1 (ja) 2004-10-07

Similar Documents

Publication Publication Date Title
Dunk et al. Gender-based differences in postural responses to seated exposures
Troussier Comparative study of two different kinds of school furniture among children
Grimes et al. Musculoskeletal disorders (MSD) in school students as a risk factor for adult MSD: a review of the multiple factors affecting posture, comfort and health in classroom environments
US20070143927A1 (en) Cushion and method of evaluating the cushion
Vergara et al. Relationship between comfort and back posture and mobility in sitting-posture
Knight et al. Children's behaviour and the design of school furniture
Vergara et al. System to measure the use of the backrest in sitting-posture office tasks
Coleman et al. An empirical study of preferred settings for lumbar support on adjustable office chairs
Ramadan Does Saudi school furniture meet ergonomics requirements?
Cotton et al. Mismatch of school desks and chairs by ethnicity and grade level in middle school
Eklund Industrial seating and spinal loading
Yu et al. Evaluation of a new work seat for industrial sewing operations: results of three field studies
JP4024152B2 (ja) マクラの高さの調整方法
Shen et al. Development of a pressure related assessment model of seating discomfort
Bendix et al. Posture, acceptability and energy consumption on a tiltable and a knee-support chair
Al Saleh et al. Are the criteria for health and safety available in adjustable Saudi school furniture?
Naumova et al. AN ORTHOPEDIC CHAIR WITH THE ACTIVE SITTING FUNCTION (A PROSPECTIVE PROJECT)
Kolich et al. The effect of microadjustment on low back comfort in the context of automotive seating
Lee Review of selected literature related to seating discomfort
Holden et al. Specifications for a mass producible static lounge chair for the elderly
Akinyemi et al. Towards Reducing Musculoskeletal Disorders Among Local Fashion Designers in South-Western Nigeria
Azghani et al. Myoelectric activity of individual lumbar erector spinae muscles variation by differing seat pan depth
Stevens Jr Design guidelines and evaluation of an ergonomic chair feature capable of providing support to forward-leaning postures
George et al. Evaluation of Male and Female Chairs for Administrative Staff in Public Institution
Son The effects of prolonged sitting in a cross-legged posture on pulmonary function in young adults

Legal Events

Date Code Title Description
AS Assignment

Owner name: ERGOSEATING CO., LTD, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:NORO, KAGEYU;OYAMA, HIDEKI;REEL/FRAME:018351/0519;SIGNING DATES FROM 20051104 TO 20051105

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION