公开(公告)号：US4720071A

公开(公告)日：1988-01-19

申请号：US943969

申请日：1986-12-19

申请人： Patrick C. Nelson ,  Donald L. Cool

发明人： Patrick C. Nelson ,  Donald L. Cool

IPC分类号： A47C3/18 ,  A47C3/24 ,  F16M11/24

CPC分类号： A47C3/24 ,  A47C3/18

摘要： A load-released height-adjusting mechanism coacting between the relatively rotatable spindle and pedestal of a chair. The mechanism employs a split nut threadably engaged with the pedestal. A wedge is continuously spring-urged into engagement with the nut for urging the sectors thereof radially for engagement with the threaded pedestal. The wedge is loaded downwardly by the spindle when the chair seat is occupied to cause the nut sectors to lockingly and nonrotatably engage the pedestal to permit free rotation of the spindle without effecting height adjustment. The wedge is not acted on by the spindle when the latter is in a raised position due to the chair seat being unoccupied, but the frictional treaded engagement between the pedestal and nut prevents free-wheeling of the chair while permitting manual rotation of the chair seat and nut to effect height adjustment.

摘要翻译： 在相对可旋转的主轴和椅子的基座之间共同作用的装载释放的高度调节机构。 该机构采用与基座螺纹接合的分离螺母。 楔形件被连续地弹簧推动成与螺母接合，用于沿径向推动其扇形部分以与螺纹底座接合。 当座椅被占用时，楔子被主轴向下装载，以使螺母区段锁定地和不可转动地接合基座，以允许主轴的自由旋转而不影响高度调节。 由于座椅未被占用而使座椅处于升高位置时，由于心轴不起作用，而基座和螺母之间的摩擦踏板接合可防止椅子的自由转动，同时允许椅子座椅的手动旋转 和坚果来实现高度调节。

公开(公告)号：US06644741B2

公开(公告)日：2003-11-11

申请号：US09957695

申请日：2001-09-20

申请人： Patrick C. Nelson ,  Manfred Kleinikel ,  Werner Härtel

发明人： Patrick C. Nelson ,  Manfred Kleinikel ,  Werner Härtel

IPC分类号： A47C760

CPC分类号： A47C1/03255 ,  A47C1/03261 ,  A47C1/03266 ,  A47C1/03272 ,  A47C1/03294

摘要： A synchrotilt mechanism for a chair to provide improved control over the relative but synchronized tilting of the back and seat during tilting. The chair back is supported on a rigid upright assembly including lower lever arms which project under the chair seat and are coupled at forward ends to a horizontal tilt shaft which is disposed under the front of the chair seat and is supported on a control housing fixed to the upper end of the base pedestal. A tension control mechanism is coupled between the tilt shaft and the control housing for normally urging the upright arrangement, and the chair back, into an upright position. The chair seat is movably supported on the lower lever arms by a support arrangement which permits the chair seat to pivot relative to the upright assembly about a generally transverse horizontal axis which is preferably slightly below the upper surface of the seat when the latter is in a nondeformed condition, i.e., the seat is not occupied. A control mechanism is coupled between the control housing, the upright assembly and the seat frame to permit synchronized tilting of the seat relative to the back in response to tilting of the back about the axis of the tilt shaft.

摘要翻译： 一种用于椅子的同步旋转机构，用于在倾斜期间提供对背部和座椅的相对但同步倾斜的改进的控制。 椅背支撑在刚性立柱组件上，该刚性立柱组件包括下杆杠杆臂，它们突出在座椅下方并且在前端处连接到水平倾斜轴上，该倾斜轴设置在椅子座椅的前面，并被支撑在固定到 基座的上端。 张力控制机构联接在倾斜轴和控制壳体之间，用于正常地将直立装置和椅子靠背推动到直立位置。 椅子座椅通过支撑装置可移动地支撑在下杆臂上，该支撑装置允许椅子座椅相对于直立组件围绕大致横向的水平轴线枢转，该轴线优选地稍微在座椅的上表面下方，当座椅座椅处于 未变形的状况，即座椅未被占用。 控制机构联接在控制壳体，直立组件和座椅框架之间，以允许座椅相对于背部的同步倾斜，以响应背部围绕倾斜轴的轴线的倾斜。

公开(公告)号：US06176548B1

公开(公告)日：2001-01-23

申请号：US09177762

申请日：1998-10-23

申请人： Douglas M. Thole ,  Patrick C. Nelson

发明人： Douglas M. Thole ,  Patrick C. Nelson

IPC分类号： A47C1031

CPC分类号： A47C9/002 ,  A47C3/026

摘要： An office chair includes a tilt control mechanism which connects a seat assembly to a base. The tilt control mechanism defines a pivot connection between the seat assembly and the base whereby the seat assembly effectively pivots about a pivot point in any direction extending radially from the pivot point. The tilt control mechanism includes an annular elastomeric ring which resists multi-directional tilting and biases the seat assembly to a neutral position. The elastomeric ring has a contact area on which the tilting moment of the seat assembly acts which contact area can be selectively varied to adjust tilting resistance.

摘要翻译： 办公椅包括将座椅组件连接到底座的倾斜控制机构。 倾斜控制机构限定了座椅组件和基座之间的枢转连接，由此座椅组件在从枢转点径向延伸的任何方向上有效地绕枢轴点枢转。 倾斜控制机构包括环形弹性环，其抵抗多方向倾斜并将座椅组件偏置到中立位置。 弹性体环具有接触区域，在该接触区域上，座椅组件的倾斜力矩作用在该接触区域上，接触面积可以选择性地变化以调整倾斜阻力。

公开(公告)号：US6053579A

公开(公告)日：2000-04-25

申请号：US774353

申请日：1996-12-27

申请人： Patrick C. Nelson ,  Larry A. Wilkerson

发明人： Patrick C. Nelson ,  Larry A. Wilkerson

IPC分类号： A47C1/03 ,  A47C7/54

CPC分类号： A47C1/03

摘要： A chair having height-adjustable arm assemblies mounted adjacent opposite sides of a seat. Each arm assembly includes an elongate armrest connected to an upper end of an arm upright. The arm upright includes a vertical support segment which has a guide bore therein. The armrest includes a vertically elongate slide tube and a horizontally elongate arm element connected to an upper end of the slide tube. A lower end of the slide tube is movably mounted within the guide bore. A latch arrangement permits the slide tube to be positioned relative to the support segment at any one of a plurality of height positions. The latch arrangement includes a cartridge assembly received within a window defined in a vertical wall of the slide tube. The cartridge assembly includes a latch member movably supported within a box-like housing and movable to engage one of a series of latching notches. An activating mechanism functions to move the latch member between latching and release positions. The activating mechanism includes an activating lever pivotally supported on the arm element, and an activating rod with an upper end which cooperates with the activating lever and a lower end that engages a roller which engages a cam surface of the latch member.

摘要翻译： 椅子具有安装在座椅相对两侧的高度可调臂组件。 每个臂组件包括连接到臂的上端直立的细长扶手。 手臂竖直包括在其中具有导向孔的垂直支撑段。 扶手包括垂直细长的滑动管和连接到滑动管的上端的水平细长的臂元件。 滑管的下端可移动地安装在导向孔内。 闩锁装置允许滑动管相对于支撑段定位在多个高度位置中的任何一个处。 闩锁装置包括容纳在限定在滑动管的垂直壁中的窗口内的盒组件。 盒组件包括可移动地支撑在盒状壳体内并可移动以接合一系列闩锁凹口中的一个的闩锁构件。 启动机构用于在闩锁和释放位置之间移动闩锁构件。 所述启动机构包括枢转地支撑在所述臂元件上的启动杆，以及具有与所述致动杆配合的上端的启动杆和与所述闩锁构件的凸轮表面接合的辊的下端。

公开(公告)号：US06533355B2

公开(公告)日：2003-03-18

申请号：US09819540

申请日：2001-03-28

申请人： Michael D. Broekhuis ,  Patrick C. Nelson ,  Richard N. Roslund, Jr. ,  Stephen J. Simpson

发明人： Michael D. Broekhuis ,  Patrick C. Nelson ,  Richard N. Roslund, Jr. ,  Stephen J. Simpson

IPC分类号： B60N202

CPC分类号： A47C3/265 ,  A47C7/402 ,  Y10T74/1967

摘要： A height adjustment mechanism in a chair operates automatically by raising and lowering a chair component such as a chair back. The height adjustment mechanism is provided on a chair back or other chair support and includes a gear which engages a rack member that is vertically movable relative thereto in response to movement of the chair back. A locking member is provided which engages the gear to prevent downward movement of the chair back while still permitting upward movement of the chair back. A disengagement member also is provided to separate the gear and the locking member and maintain the gear in a disengaged position that permits lowering of the chair back.