IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0670654
(1996-06-26)
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발명자
/ 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
11 인용 특허 :
3 |
초록
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A baby-walker including a top table, an annular base frame having a plurality of downwardly disposed bottom coupling holes around the border, a plurality of wheel assemblies and an extension stand respectively coupled to the downward coupling holes of the base frame by a respective anchoring socket
A baby-walker including a top table, an annular base frame having a plurality of downwardly disposed bottom coupling holes around the border, a plurality of wheel assemblies and an extension stand respectively coupled to the downward coupling holes of the base frame by a respective anchoring socket and a respective bolt, and a linkage coupled between the top table and the base frame, the extension stand being moved between the operative position in which the baby-walker is supported on the ground by the extension stand and allowed to be turned about the extension stand, and the wheel assemblies are suspending above the lowest end of said extension stand, and the non-operative position in which the baby-walker is supported on the ground by the wheel assemblies and the extension stand is suspending from the base frame above the elevation of the wheel assemblies.
대표청구항
▼
[ I claim:] [1.] A baby-walker comprising a top table, an annular base frame having a plurality of downwardly disposed bottom coupling holes around a border, a plurality of wheel assemblies and an extension stand respectively coupled to said downward coupling holes of said base frame by a respective
[ I claim:] [1.] A baby-walker comprising a top table, an annular base frame having a plurality of downwardly disposed bottom coupling holes around a border, a plurality of wheel assemblies and an extension stand respectively coupled to said downward coupling holes of said base frame by a respective anchoring socket and a respective bolt, and a linkage coupled between said top table and said base frame, said extension stand being moved between the operative position in which the baby-walker is supported on the ground by said extension stand and said wheel assemblies are suspending above the lowest end of said extension stand, and the non-operative position in which the baby-walker is supported on the ground by said wheel assemblies and said extension stand is suspending from said base frame above the elevation of said wheel assemblies, wherein said extension stand comprises:a base member, said base member comprising a first chamber having an open bottom, a first downward annular flange surrounding said first chamber, a second downward annular flange surrounding said first downward annular flange, a bottom annular groove defined between said first downward annular flange and said second downward annular flange, a second chamber having an open top, a center stub tube at the center of said top open chamber, two open-ended, longitudinal guide grooves and two close-ended longitudinal locating grooves equally spaced within said second chamber, two transverse guide grooves disposed within said second chamber at two opposite sides and connected between said longitudinal guide grooves and said longitudinal locating grooves, and two locating blocks respectively disposed in said transverse guide grooves, each of said longitudinal locating grooves having a closed top end and a closed bottom end, each of said transverse guide grooves having one end connected to the closed bottom end of one longitudinal locating groove at right angles, and an opposite end perpendicularly connected to one longitudinal guide groove, each of said longitudinal guide grooves having two oposite open ends respectively extending to two opposite ends of said second chamber;a compression spring mounted in the second top open chamber of said base member;an annular vacuum mount coupled to said base member and adapted for securing to the ground to hold the baby-walker in place, said annular vacuum mount comprising a circular center opening, an upright annular flange raised from a top side thereof around said circular center opening and fitted into the bottom annular groove of said base member, a top annular groove surrounding said upright annular flange and coupled to the second downward annular flange of said base member;a cap member fastened to said base member, said cap member comprising a center mounting hole fastened to one downward mounting hole of the base frame of the baby-walker by one bolt and one anchoring socket, a downward coupling barrel on the inside at the center adapted and coupled to the second chamber of said base member to hold said compression spring on the inside, an annular groove at a bottom side thereof around said downward coupling barrel, two coupling blocks bilaterally raised from the periphery of said downward coupling barrel and inserted through the longitudinal guide grooves of the second chamber of said base member and moved between the longitudinal locating grooves of the second chamber of said base member and the transverse guide grooves thereof, the coupling blocks of said downward coupling barrel being respectively engaged with the closed top ends of the longitudinal locating grooves of said base member when the extension stand is moved to said non-operative position by pushing said base member upwards relative to said cap member to compress said compression spring and then turning said base member in one direction relative to said cap member to align the longitudinal locating grooves of said base member with the coupling blocks of said downward coupling barrel, the coupling blocks of said downward coupling barrel being respectively engaged with the locating blocks of said base member when the extension stand is moved to said operative position by pushing said base member upwards relative to said cap member to compress said compression spring and then turning said base member in the reversed direction relative to said cap member to force the coupling blocks of said downward coupling barrel into the transverse guide grooves of said base member; anda locating member fastened to said base member to block up said longitudinal guide grooves, said locating member comprising a split coupling rod raised from the center and coupled to the center stub tube of the second chamber of said base member, and two upright tongues respectively inserted into the longitudinal guide grooves of the second chamber of said base member.
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