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    • 1. 发明授权
      US6000756A Synchronized chair seat and backrest tilt control mechanism 有权
    • Synchronized chair seat and backrest tilt control mechanism
    • US6000756A
    • 1999-12-14
    • US283411
    • 1999-04-01
    • Kenneth C. Hybarger , Philip E. Crossman , Bryan H. Zeeuw , LeRoy B. Johnson , David A. Young
    • Kenneth C. Hybarger , Philip E. Crossman , Bryan H. Zeeuw , LeRoy B. Johnson , David A. Young
    • A47C1/032 , A47C7/40
    • A47C1/03238 , A47C1/03255 , A47C1/03266 , A47C1/03272 , A47C3/30
    • A chair control mechanism is provided for use on a chair having a separate seat 14 and backrest 16 that move with respect to a base 12 of the chair. The mechanism 22 includes a housing 26 supported on the base, and brackets 28, 30 secured to the seat and backrest. The seat bracket 28 is supported on the housing for pivotal movement about a horizontally extending front pivot axis 68 between an upright position and a reclining position, and the front pivot axis is located adjacent the front end of the housing. The backrest bracket 30 is supported on the housing for pivotal movement about a horizontally extending rear pivot axis 80 that is located rearward of the front pivot axis. A mechanical linkage 70, 78 is connected between the brackets at a position spaced rearward of the rear pivot axis relative to the housing for transmitting pivoting movement between the brackets, and a spring assembly 32 is connected between the housing and the backrest bracket for biasing the seat and backrest toward the upright position. A forward travel-stop control assembly 38 is provided on the mechanism for adjusting the forward most position of the seat and backrest, as is a tilt control assembly 36 which permits the seat and backrest to be locked against tilting movement. The tilt control assembly 36 includes a locking plate 102 supported on the housing for relative translational movement between an extended position in which the locking plate is received in an aperture of the backrest bracket to lock the backrest bracket from further pivotal movement, and a retracted position removed from the aperture to allow further pivotal movement of the seat and backrest. A locking pawl 106 is supported on a lever 104 of the tilt assembly and engages the lock plate 102 to retract and extend the plate when the lever is rotated. In addition, a clutch is interposed between the actuating lever and the locking pawl for exerting a rotating force on the locking pawl to move the locking pawl from the second position when the actuating lever is rotated. The rotating force of the clutch is smaller than the friction force that is exerted on the locking plate when the pivoting force of the spring assembly 32 is exerted on the locking plate such that the locking plate can only be retracted when the friction force is reduced to a magnitude less than the rotating force.
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
    • 2. 发明授权
      US06010189A Synchronized chair seat and backrest tilt control mechanism 有权
    • Synchronized chair seat and backrest tilt control mechanism
    • US06010189A
    • 2000-01-04
    • US285151
    • 1999-04-01
    • Kenneth C. Hybarger , Philip E. Crossman , Bryan H. Zeeuw , LeRoy B. Johnson , David A. Young
    • Kenneth C. Hybarger , Philip E. Crossman , Bryan H. Zeeuw , LeRoy B. Johnson , David A. Young
    • A47C1/032 , A47C3/00
    • A47C1/03238 , A47C1/03255 , A47C1/03266 , A47C1/03272 , A47C3/30
    • A chair control mechanism is provided for use on a chair having a separate seat 14 and backrest 16 that move with respect to a base 12 of the chair. The mechanism 22 includes a housing 26 supported on the base, and brackets 28, 30 secured to the seat and backrest. The seat bracket 28 is supported on the housing for pivotal movement about a horizontally extending front pivot axis 68 between an upright position and a reclining position, and the front pivot axis is located adjacent the front end of the housing. The backrest bracket 30 is supported on the housing for pivotal movement about a horizontally extending rear pivot axis 80 that is located rearward of the front pivot axis. A mechanical linkage 70, 78 is connected between the brackets at a position spaced rearward of the rear pivot axis relative to the housing for transmitting pivoting movement between the brackets, and a spring assembly 32 is connected between the housing and the backrest bracket for biasing the seat and backrest toward the upright position. A forward travel-stop control assembly 38 is provided on the mechanism for adjusting the forward most position of the seat and backrest, as is a tilt control assembly 36 which permits the seat and backrest to be locked against tilting movement. The tilt control assembly 36 includes a locking plate 102 supported on the housing for relative translational movement between an extended position in which the locking plate is received in an aperture of the backrest bracket to lock the backrest bracket from further pivotal movement, and a retracted position removed from the aperture to allow further pivotal movement of the seat and backrest. A locking pawl 106 is supported on a lever 104 of the tilt assembly and engages the lock plate 102 to retract and extend the plate when the lever is rotated. In addition, a clutch is interposed between the actuating lever and the locking pawl for exerting a rotating force on the locking pawl to move the locking pawl from the second position when the actuating lever is rotated. The rotating force of the clutch is smaller than the friction force that is exerted on the locking plate when the pivoting force of the spring assembly 32 is exerted on the locking plate such that the locking plate can only be retracted when the friction force is reduced to a magnitude less than the rotating force.
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Espacenet 法律信息 同族专利 专利引用
    • 3. 发明授权
      US6139103A Synchronized chair seat and backrest tilt control mechanism 失效
    • Synchronized chair seat and backrest tilt control mechanism
    • 同步椅座椅和靠背倾斜控制机构
    • US6139103A
    • 2000-10-31
    • US38242
    • 1998-03-11
    • Kenneth C. Hybarger , Philip E. Crossman , Bryan H. Zeeuw , LeRoy B. Johnson , David A. Young
    • Kenneth C. Hybarger , Philip E. Crossman , Bryan H. Zeeuw , LeRoy B. Johnson , David A. Young
    • A47C1/032
    • A47C1/03238 , A47C1/03255 , A47C1/03266 , A47C1/03272 , A47C3/30
    • A chair control mechanism is provided for use on a chair having a separate seat 14 and backrest 16 that move with respect to a base 12 of the chair. The mechanism 22 includes a housing 26 supported on the base, and brackets 28, 30 secured to the seat and backrest. The seat bracket 28 is supported on the housing for pivotal movement about a horizontally extending front pivot axis 68 between an upright position and a reclining position, and the front pivot axis is located adjacent the front end of the housing. The backrest bracket 30 is supported on the housing for pivotal movement about a horizontally extending rear pivot axis 80 that is located rearward of the front pivot axis. A mechanical linkage 70, 78 is connected between the brackets at a position spaced rearward of the rear pivot axis relative to the housing for transmitting pivoting movement between the brackets, and a spring assembly 32 is connected between the housing and the backrest bracket for biasing the seat and backrest toward the upright position.
    • 提供椅子控制机构，用于具有相对于椅子的基座12移动的单独的座位14和靠背16的椅子上。 机构22包括支撑在基座上的壳体26和固定到座椅和靠背的支架28,30。 座椅支架28支撑在壳体上，用于围绕在直立位置和倾斜位置之间的水平延伸的前枢转轴线68枢转运动，并且前枢转轴线邻近壳体的前端定位。 靠背支架30被支撑在壳体上，用于围绕位于前枢转轴线后方的水平延伸的后枢转轴线80枢转运动。 机械联动装置70,78在相对于壳体的后枢转轴线后方间隔开的位置处连接在支架之间，用于在支架之间传递枢转运动，弹簧组件32连接在壳体和靠背支架之间， 座椅和靠背朝向直立位置。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
    • 4. 发明授权
      US4948198A Knee-tilt chair control 失效
    • Knee-tilt chair control
    • 膝倾斜椅子控制
    • US4948198A
    • 1990-08-14
    • US258172
    • 1988-10-14
    • Philip Crossman , Kenneth C. Hybarger , Bryan H. Zeeuw , David A. Young
    • Philip Crossman , Kenneth C. Hybarger , Bryan H. Zeeuw , David A. Young
    • A47C3/026
    • A47C3/026 , A47C1/024 , A47C7/441 , A47C7/443
    • A low profile knee-tilt chair control for controlling biased tilting between a chair seat plate and a chair base plate of a pedestal base chair wherein the chair base plate is supported by a single vertical spindle at the rear of the base plate, and the chair seat plate pivots about a horizontal axis at the front of the base plate. The chair seat is biased to an at-rest position by a low profile, conical helical compression spring operable between the base plate and chair seat and located between the spindle and the horizontal pivot axis of the base plate. The low profile, conical helical compression spring is so mounted relative to the base plate and chair seat plate that the small coils of the compression spring may pass through the large coils during compression of the spring. The control is further characterized by a lockout for securing the chair seat plate against tilting relative to the base plate in either of two different, selectable, at-rest positions.
    • 一种低调的膝盖倾斜椅控制装置，用于控制椅座座板与座椅之间椅座椅座基板之间的倾斜倾斜，其中椅基座由基板后部的单个垂直轴支撑，椅子 座板围绕基板前部的水平轴线枢转。 椅座通过可在基板和椅座之间操作并且位于主轴与基板的水平枢转轴线之间的低轮廓的锥形螺旋压缩弹簧而偏置到静止位置。 小型锥形螺旋压缩弹簧相对于基板和椅座座安装，使得压缩弹簧的小线圈在弹簧压缩期间可以穿过大线圈。 该控制的特征还在于，该锁定装置用于在两个不同的，可选择的静止位置中的任何一个中固定椅座板以防止相对于基板倾斜。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
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