公开(公告)号：US07273253B2

公开(公告)日：2007-09-25

申请号：US10915882

申请日：2004-08-11

申请人： Michael L Deimen ,  Stephen D Hatcher

发明人： Michael L Deimen ,  Stephen D Hatcher

IPC分类号： A47C1/024

CPC分类号： A47C1/03277 ,  A47C1/03222 ,  A47C1/03255 ,  A47C1/03266

摘要： A task chair, including a backrest assembly and a seat assembly pivotally coupled both to one another and to side portions of a fixed yoke member for synchronized movement, in which the seat of the seat assembly moves upwardly and forwardly concurrently with recline of the backrest of the backrest assembly. The chair further includes a tension assembly including an elongate tension member, such as a leaf spring, secured at one end thereof to the yoke member, and a contact member, such as a contact roller, adjustably mounted to the seat assembly. The contact member engages the tension member such that the tension member resists recline of the backrest assembly and concurrent movement of the seat assembly from their initial positions, and also provides a restoring force which tends to move the backrest to its initial upright position and the seat to its initial rearward and lowered position. The contact member is adjustable with respect to the tension member in order to vary the effective moment arm acting upon the tension member, thereby varying the pre-load of the tension member and the resistance provided by the tension member.

摘要翻译： 任务椅，包括靠背组件和座椅组件，其枢转地联接到彼此和用于同步运动的固定磁轭构件的侧部，座椅组件的座椅向上和向前与背靠背的靠背同时移动， 靠背组件。 椅子还包括张紧组件，该张力组件包括在其一端固定到轭构件的细长的拉力构件，例如板簧，以及可调节地安装到座椅组件的接触构件。 接触构件与张力构件接合，使得张紧构件抵抗靠背组件的倾斜并且座椅组件从其初始位置的同时运动，并且还提供趋向于将靠背移动到其初始直立位置的恢复力，并且座 到其初始向后和降低的位置。 接触构件相对于张紧构件是可调节的，以便改变作用在张紧构件上的有效力矩臂，从而改变张紧构件的预加载力和由张紧构件提供的阻力。

公开(公告)号：US08061751B2

公开(公告)日：2011-11-22

申请号：US12412858

申请日：2009-03-27

申请人： Stephen D Hatcher

发明人： Stephen D Hatcher

IPC分类号： B66F19/00

CPC分类号： B25G1/04 ,  B25J1/04 ,  Y10T74/20396

摘要： An extendable tool having an internal drive assembly is disclosed. The extendable components of the internal drive assembly are two, or more, telescoping drive shafts each having an alignment structure. The alignment structure ensures that the drive shafts generally maintain their circumferential alignment relative to each other, i.e. the shafts rotate together and maintain their orientation, while allowing the drive shafts to slide axially relative to each other. In one embodiment the drive shafts have a non-circular cross-section, and more preferably, a square cross-section. Each inner drive shaft has a cross-sectional area that is slightly smaller than the next larger outer drive shaft. Thus, the drive shafts may slide axially relative to each other. However, when the drive shafts are rotated, the non-circular shape causes the inner drive shaft and the larger outer drive shaft to engage each other and rotate together.

摘要翻译： 公开了一种具有内部驱动组件的可伸缩工具。 内部驱动组件的可延伸部件是两个或更多个伸缩式驱动轴，每个驱动轴具有对准结构。 对准结构确保驱动轴通常相对于彼此保持其圆周对准，即，轴一起旋转并保持其定向，同时允许驱动轴相对于彼此轴向滑动。 在一个实施例中，驱动轴具有非圆形横截面，更优选地，具有正方形横截面。 每个内部驱动轴具有比下一个更大的外部驱动轴略小的横截面积。 因此，驱动轴可相对于彼此轴向滑动。 然而，当驱动轴旋转时，非圆形形状使得内部驱动轴和较大的外部驱动轴彼此接合并一起旋转。