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US20040212238A1 - Highchair - Google Patents

Highchair Download PDF

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Publication number
US20040212238A1
US20040212238A1 US10/423,390 US42339003A US2004212238A1 US 20040212238 A1 US20040212238 A1 US 20040212238A1 US 42339003 A US42339003 A US 42339003A US 2004212238 A1 US2004212238 A1 US 2004212238A1
Authority
US
United States
Prior art keywords
highchair
pivoting portion
leg
outer tube
lifting means
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
US10/423,390
Other languages
English (en)
Inventor
Shun-Min Chen
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US10/423,390 priority Critical patent/US20040212238A1/en
Assigned to CHENG, KENNY reassignment CHENG, KENNY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHEN, SHUN-MIN
Priority to GB0309613A priority patent/GB2401097B/en
Priority to DE20307192U priority patent/DE20307192U1/de
Publication of US20040212238A1 publication Critical patent/US20040212238A1/en
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
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/20—Chairs or stools with vertically-adjustable seats
    • 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
    • A47C3/20—Chairs or stools with vertically-adjustable seats
    • A47C3/30—Chairs or stools with vertically-adjustable seats with vertically-acting fluid cylinder
    • 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
    • A47C7/002—Chair or stool bases
    • A47C7/004—Chair or stool bases for chairs or stools with central column, e.g. office chairs
    • 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
    • A47C7/002—Chair or stool bases
    • A47C7/006—Chair or stool bases with castors

Definitions

  • the present invention relates to a multi-function highchair. More specifically, the present invention relates to an infant highchair configured to adjust the height thereof easily and can be folded into a minimum volume.
  • FIG. 1 shows a conventional infant highchair.
  • the leg frame is configured to form an inverted-V shape or L shape.
  • the height-adjusting means is a locking slot.
  • a user needs to press buttons (not shown) on both sides of the height-adjusting means 120 so as to move a sleeve 100 up and down along the leg tubes 110 whereby achieving the height adjustment of the infant highchair.
  • buttons not shown
  • the user must place the infant on the highchair first and put aside the stuff on hands so that the height adjustment can be achieved by both hands.
  • Such a procedure is very inconvenient.
  • the height adjustment would be more laborious due to the total weight of the infant plus the highchair itself.
  • conventional highchairs also have a drawback that they can not be detached and folded into a minimum volume so that it is very inconvenient in storage and conveyance due to the bulky structure.
  • the present invention is achieved by the diligence and experience of the applicant.
  • the object of this invention is to provide an improved highchair which can be operated by single hand pressing or foot tramping with less labor and also can be detached and folded into a minimum volume. Further, this invention is very convenient in conveyance and storage because it occupies the least space.
  • the highchair of this invention comprises a lifting means and a foldable leg frame.
  • the lifting means includes an operating rod, an outer tube and a piston rod.
  • the top end of the piston rod is provided with a pair of holes for inserting a pin therein whereby the piston and a seat base can be connected together.
  • the periphery of the piston rod is provided with a telescopic sheath, like bellows, for covering the piston rod so as to offer an elegant appearance to the highchair.
  • the operating rod is formed into an elongated C shape so that it can be easily operated by single hand pressing or foot tramping.
  • the leg frame comprises an upper pivoting portion, a lower pivoting portion and a plurality of sub-legs.
  • Each sub-leg includes a first branch leg and a second branch leg pivotally connected to the upper and lower pivoting portion respectively.
  • the free end of each sub-leg is provided with a rolling wheel to slide on the ground.
  • the upper pivoting portion is fixed on the outside of the outer tube of the lifting means.
  • the lower pivoting portion is fixed on a lower portion of a sliding sleeve and can slide together with the sliding sleeve. With the axial sliding of the sliding sleeve on the outer tube, the folding of the leg frame is achieved.
  • the bottom of the outer tube is provided with a locking plastic in the form of a hollow cylinder.
  • the periphery of the locking plastic is provided with four engaging tabs for engaging the lower pivoting portion.
  • the lifting means of the highchair of this invention an air pressure or hydraulic piston can be used. Therefore, even an infant sits on the highchair of this invention, it can be operated with less labor. Further, since the highchair of this invention can be operated by single band pressing or foot tramping, the height of the highchair of this invention can be easily adjusted even the user holds something on hands. In the highchair of this invention, the volume thereof can be reduced to the minimum due to the foldable leg frame and thus it occupies less space.
  • the seat body and the piston rod of the lifting means can be detachably assembled together by the pin and thus it is very easy to detach and convey. Also, the leg frame is provided with a plurality of sub-legs for firmly standing on the ground when completely unfolding.
  • FIG. 1 is a perspective view showing a conventional infant highchair
  • FIG. 2 is a perspective view showing the unfolding state of the leg frame and the ascending state of the piston rod of the highchair of this invention, in which the portion of the seat is depicted in dotted lines;
  • FIG. 3 is a perspective view showing the folding state of the leg frame and the descending state of the piston rod of the highchair of this invention, in which the portion of the seat is omitted;
  • FIG. 4 is a cross sectional view showing the completely unfolding state of the leg frame in which the piston rod of the highchair of this invention ascends to the highest top;
  • FIG. 5 is a cross sectional view showing the completely folding state of the leg frame in which the piston rod of the highchair of this invention descends to the lowest bottom;
  • FIG. 6 is a partial cross-sectional side view showing the inner structure of the locking plastic and the engaging tabs of this invention.
  • FIG. 7 a is a schematic cross sectional view showing the structure inside the lifting means when the piston ascends by means of the operating rod of this invention
  • FIG. 7 b is a schematic cross sectional view showing the structure inside the lifting means when the operating rod is in a locking position.
  • the highchair of this invention mainly includes a lifting means and a leg frame.
  • the lifting means comprises an operating rod 10 , an outer tube 12 and a piston rod 14 .
  • the top end of the piston rod 14 is provided with a pair of holes 18 for inserting a pin (not shown) therein whereby connecting the piston rod 14 and the seat base 2 together.
  • the periphery of the piston rod 14 is provided with a telescopic sheath 16 for extending or retracting along with the ascending or descending of the piston rod 14 .
  • the telescopic sheath 16 covers the piston rod 14 so as to give an elegant appearance to the highchair.
  • the leg frame comprises an upper pivoting portion 20 , a lower pivoting portion 24 and a plurality of sub-legs.
  • the upper pivoting portion 20 is fixed to the outside of the outer wall 12 of the lifting means at a position slightly lower than the operating rod 10 .
  • the lower pivoting portion 20 is fixed to a sliding sleeve 27 for sliding axially along the periphery of the outer tube 12 thereby folding or unfolding the leg frame.
  • the leg frame is provided with a plurality of sub-legs. In one preferred embodiment of this invention, the number of the sub-legs is six. However, the number of the sub-legs is not limited to six and can be three, four, five, six or more as long as the leg frame can firmly stand on the ground when unfolding.
  • Each sub-leg is provided with a first branch leg 25 and a second branch leg 26 .
  • the first branch leg 25 is pivotally connected to the upper pivoting portion 20 at a first pivoting point 21
  • the first branch leg 25 is pivotally connected to the second branch leg 26 at a second pivoting point 22
  • the second branch leg 26 is pivotally connected to the lower pivoting portion 24 at a third pivoting point 23 so as to form a link structure.
  • the free end of each sub-leg is provided with a rolling wheel 28 for sliding on the ground.
  • FIGS. 2 to 4 there is shown the leg frame in an unfolding state. Since the first branch leg 25 and the second branch leg 26 is pivotally connected to the upper pivoting portion 20 and the lower pivoting portion 24 respectively, when the leg frame is unfolding, the first branch leg 25 expands outwardly to cause the sliding sleeve 27 to move upwardly until abut against the upper pivoting portion 20 . At the same time, the lower pivoting portion 24 engages the engaging tabs 32 on the locking plastic 30 thereby forming a fixed unfolding state.
  • the user simply presses four engaging tabs 32 by his/her fingers so that the sliding sleeve 27 can slide downwardly along the outer tube 12 whereby folding all the sub-legs.
  • the lower pivoting portion 24 covers the locking plastic 30 to complete the folding of the leg frame.
  • the structure of the locking plastic 30 is shown as an annular cylinder.
  • the peripheral surface of the locking plastic is provided with four engaging tabs.
  • Each engaging tab 32 has a slope for abutting and stopping the lower pivoting portion.
  • the outer diameter of the lower portion of the lifting means is narrowed (i.e. the diameter of the lower portion of the outer tube 12 is decreased) so that the narrowed outer diameter will be exactly equal to the inner diameter of the locking plastic 30 .
  • the locking plastic 30 is fixed on the lower portion of the outer tube, only four engaging tabs 32 are slightly protruded without interfering with the folding of the lower pivoting portion 24 .
  • a plurality of radial reinforcing ribs 34 are provided between the inner diameter and outer diameter of the locking plastic 30 for decreasing the total weight while maintaining sufficient strength. Further, the structure of the reinforcing ribs also provides a space for the engaging tabs 32 bending inwardly.
  • the bottom of the outer tube is flush with the locking plastic 30 and the locking plastic 30 can be firmly fixed on the outer tube 12 by some bolts (not shown).
  • the preferred embodiment of this invention is shown as a hydraulic cylinder.
  • an air pressure cylinder can also be used.
  • FIGS. 7 a and 7 b when the operating rod 10 is turned up and down, such action can cause the piston rod 14 in the hydraulic cylinder to ascend.
  • the operating principle of the hydraulic cylinder is similar to that of a common hydraulic cylinder and thus omitted for simplicity.
  • the piston rod ascends to a suitable height, the user can turn the operating rod 10 upwardly to a locking position.
  • a locking block 15 in the piston cylinder can be abutted to lock the piston rod 14 so as to fix the height of the piston rod 14 .
  • the piston rod can not ascend or spin so that the undesired spinning of the highchair can be prevented.
  • the piston rod 14 when the piston rod 14 is to be descended, the user turns downwardly the operating rod from the locking position, the piston rod 14 can easily descend to the bottom by means of the weight of the infant or slight force applied by the user.
  • the highchair of this invention has many advantages over prior art. Since the operating rod 10 can be operated by single hand pressing or foot tramping, the height adjustment can be easily carried out even the user's hand is holding something. Further, the lifting means is activated by an air pressure or hydraulic cylinder, it can be operated with much less labor to overcome the total weight of the infant plus the highchair itself. Moreover, the speed of height-adjusting is very smooth and slow so that the infant sat therein will not be scared. When the height is achieved the desired position, the operating rod can be turned to the locking position to prevent the operating rod from moving vertically or spinning. Therefore, the undesired spinning of the highchair can be prevented.
  • the bottom of the highchair of this invention is provided with a foldable leg frame, it is very convenient to fold the highchair into the minimum volume.
  • the lifting means can be a hydraulic, air pressure or even screw lifting means.
  • the number of the sub-legs is not limited to six. Any modification can be easily made on the material or structure of this invention by those skilled in this art after reviewing the specification. Therefore, such simple modification is still within the scope of the appended claims of this invention.

Landscapes

  • Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)
  • Special Chairs (AREA)
US10/423,390 2003-04-25 2003-04-25 Highchair Abandoned US20040212238A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US10/423,390 US20040212238A1 (en) 2003-04-25 2003-04-25 Highchair
GB0309613A GB2401097B (en) 2003-04-25 2003-04-28 Height adjustable and foldable highchair
DE20307192U DE20307192U1 (de) 2003-04-25 2003-05-06 Hochstuhl

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/423,390 US20040212238A1 (en) 2003-04-25 2003-04-25 Highchair
GB0309613A GB2401097B (en) 2003-04-25 2003-04-28 Height adjustable and foldable highchair
DE20307192U DE20307192U1 (de) 2003-04-25 2003-05-06 Hochstuhl

Publications (1)

Publication Number Publication Date
US20040212238A1 true US20040212238A1 (en) 2004-10-28

Family

ID=42736155

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/423,390 Abandoned US20040212238A1 (en) 2003-04-25 2003-04-25 Highchair

Country Status (3)

Country Link
US (1) US20040212238A1 (de)
DE (1) DE20307192U1 (de)
GB (1) GB2401097B (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070163846A1 (en) * 2005-07-19 2007-07-19 Finell Rebecca M Highchair
ES2326294A1 (es) * 2006-05-12 2009-10-06 Colchonerias Alcala, S.L. Conjunto de elevacion hidraulico para camas.
CN107174027A (zh) * 2017-07-12 2017-09-19 浙江昊国家具有限公司 一种健康环保型转椅
USD846930S1 (en) 2016-10-31 2019-04-30 Varidesk, Llc Chair
US10376071B2 (en) 2016-11-28 2019-08-13 Variadesk, LLC Leaning chair
CN110367746A (zh) * 2019-07-04 2019-10-25 安徽酷豆丁科技发展股份有限公司 一种滑动式折叠收合婴儿床架
US10568432B2 (en) 2016-09-30 2020-02-25 Anji Jintai Fastener Co., Ltd. Foldable five-star foot
CN111481003A (zh) * 2020-05-07 2020-08-04 恒林家居股份有限公司 一种椅子及其摇摆椅脚
WO2021178767A1 (en) * 2020-03-06 2021-09-10 Hartenstine Zachary C Height adjustable child's chair
US11122902B2 (en) * 2019-07-11 2021-09-21 New-Tec Integration (Xiamen) Co., Ltd. Chair and chair base
CN113925307A (zh) * 2021-11-24 2022-01-14 浙江工业大学之江学院 一种多人使用的可折叠多功能移动座椅
US20230031616A1 (en) * 2021-07-27 2023-02-02 Clifford Wayne Williams Mobile Barber Chair

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6871912B1 (en) * 2003-10-23 2005-03-29 Kenny Cheng Highchair
DE202006017553U1 (de) 2006-11-17 2007-05-16 Ilinko Ltd. Kinderhochstuhl
US7673942B2 (en) * 2007-08-10 2010-03-09 Wonderland Nurserygoods Co., Ltd. High chair with swivel feature and height adjustment

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US755043A (en) * 1903-11-27 1904-03-22 George W Pike Folding stool.
US2359821A (en) * 1943-06-09 1944-10-10 Benjamin S Schwartz Folding stool
US3203657A (en) * 1964-06-22 1965-08-31 Joseph Rogers Inc Drummer's throne
US4183579A (en) * 1978-05-15 1980-01-15 Gonzalez Enrique M Doctor's stool
US4223860A (en) * 1979-01-05 1980-09-23 Prest John D Convertible stand for table tops
US4932719A (en) * 1988-08-04 1990-06-12 Gonzalez Y Rojas Enrique M Inclinable stool
US5505524A (en) * 1994-12-19 1996-04-09 Drumwright; Kathy P. Portable hair styling and barber chair
US6030045A (en) * 1998-07-13 2000-02-29 Hoshino Gakki Co., Ltd. Holding structure for a post for a drum chair
US6672660B2 (en) * 2001-05-02 2004-01-06 Hoshino Gakki Kabushiki Kaisha Chair for a drum

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1461951A (en) * 1974-05-08 1977-01-19 French Eng Ltd John Adjustable support devices
US4076201A (en) * 1977-02-10 1978-02-28 Hudnall Walter E Adjustable chair-spindle assembly
GB2108466A (en) * 1981-10-27 1983-05-18 Robert Edward Hargreaves Vertically-adjustable chair
US4493469A (en) * 1983-01-19 1985-01-15 Mohasco Corporation Height adjustment control arrangement
DE3420528A1 (de) * 1984-06-01 1985-12-05 Stabilus Gmbh, 5400 Koblenz Stufenlos verstellbare hubvorrichtung
DE29508861U1 (de) * 1995-05-29 1995-09-28 Bannik, Britta, 45481 Mülheim Höhenverstellbarer Kinderstuhl

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US755043A (en) * 1903-11-27 1904-03-22 George W Pike Folding stool.
US2359821A (en) * 1943-06-09 1944-10-10 Benjamin S Schwartz Folding stool
US3203657A (en) * 1964-06-22 1965-08-31 Joseph Rogers Inc Drummer's throne
US4183579A (en) * 1978-05-15 1980-01-15 Gonzalez Enrique M Doctor's stool
US4223860A (en) * 1979-01-05 1980-09-23 Prest John D Convertible stand for table tops
US4932719A (en) * 1988-08-04 1990-06-12 Gonzalez Y Rojas Enrique M Inclinable stool
US5505524A (en) * 1994-12-19 1996-04-09 Drumwright; Kathy P. Portable hair styling and barber chair
US6030045A (en) * 1998-07-13 2000-02-29 Hoshino Gakki Co., Ltd. Holding structure for a post for a drum chair
US6672660B2 (en) * 2001-05-02 2004-01-06 Hoshino Gakki Kabushiki Kaisha Chair for a drum

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070163846A1 (en) * 2005-07-19 2007-07-19 Finell Rebecca M Highchair
ES2326294A1 (es) * 2006-05-12 2009-10-06 Colchonerias Alcala, S.L. Conjunto de elevacion hidraulico para camas.
US10568432B2 (en) 2016-09-30 2020-02-25 Anji Jintai Fastener Co., Ltd. Foldable five-star foot
USD846930S1 (en) 2016-10-31 2019-04-30 Varidesk, Llc Chair
US10376071B2 (en) 2016-11-28 2019-08-13 Variadesk, LLC Leaning chair
CN107174027A (zh) * 2017-07-12 2017-09-19 浙江昊国家具有限公司 一种健康环保型转椅
CN110367746A (zh) * 2019-07-04 2019-10-25 安徽酷豆丁科技发展股份有限公司 一种滑动式折叠收合婴儿床架
US11122902B2 (en) * 2019-07-11 2021-09-21 New-Tec Integration (Xiamen) Co., Ltd. Chair and chair base
WO2021178767A1 (en) * 2020-03-06 2021-09-10 Hartenstine Zachary C Height adjustable child's chair
US12329291B2 (en) 2020-03-06 2025-06-17 Wonderland Switzerland Ag Height adjustable child's chair
CN111481003A (zh) * 2020-05-07 2020-08-04 恒林家居股份有限公司 一种椅子及其摇摆椅脚
US20230031616A1 (en) * 2021-07-27 2023-02-02 Clifford Wayne Williams Mobile Barber Chair
US11622630B2 (en) * 2021-07-27 2023-04-11 Clifford Wayne Williams Mobile barber chair
CN113925307A (zh) * 2021-11-24 2022-01-14 浙江工业大学之江学院 一种多人使用的可折叠多功能移动座椅

Also Published As

Publication number Publication date
DE20307192U1 (de) 2003-09-11
GB2401097B (en) 2005-03-09
GB0309613D0 (en) 2003-06-04
GB2401097A (en) 2004-11-03

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Legal Events

Date Code Title Description
AS Assignment

Owner name: CHENG, KENNY, TAIWAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CHEN, SHUN-MIN;REEL/FRAME:014014/0291

Effective date: 20030411

STCB Information on status: application discontinuation

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