公开(公告)号：US4519620A

公开(公告)日：1985-05-28

申请号：US475900

申请日：1983-03-16

申请人： Robert D. Keith

发明人： Robert D. Keith

IPC分类号： B65H18/06 ,  B65H75/08 ,  F16D1/02 ,  B23B31/40

CPC分类号： B65H75/247 ,  Y10T279/1079 ,  Y10T279/1087 ,  Y10T82/268

摘要： A torque-transmitting chuck comprising an interior member having a longitudinal axis and exterior circumferentially-spaced, longitudinally-extending camming surfaces. A generally axially-extending, circular in cross-section roller engages each of the camming surfaces. Each roller is arranged to engage the interior of a hollow core and move radially outwardly relative to the interior member in response to movement of the roller circumferentially of the interior member. The chuck is characterized in that each of the rollers includes an axially-extending center rod and a thick surrounding layer of resilient material the outer circumferential surface of which contacts the camming surfaces and core. The layer has a hardness in the range of 30 to 90 durometer and a radial thickness of not less than about 1/8 inch.

摘要翻译： 扭矩传递卡盘包括具有纵向轴线和外部周向间隔开的纵向延伸的凸轮表面的内部构件。 大致轴向延伸的圆形横截面的辊接合每个凸轮表面。 每个辊布置成接合中空芯的内部并且响应于滚子在内部构件周向的移动而相对于内部构件径向向外移动。 卡盘的特征在于，每个辊包括轴向延伸的中心杆和其外周表面接触凸轮表面和芯部的弹性材料的厚的周围层。 该层具有30至90硬度范围内的硬度和不小于约1/8英寸的径向厚度。

公开(公告)号：US08484060B2

公开(公告)日：2013-07-09

申请号：US10447245

申请日：2003-05-28

申请人： Anthony P. D'Andrea ,  Rolf J. Huelsebusch ,  Robert D. Keith ,  Bruce Wallman

发明人： Anthony P. D'Andrea ,  Rolf J. Huelsebusch ,  Robert D. Keith ,  Bruce Wallman

IPC分类号： G06Q10/06

CPC分类号： G06Q10/06 ,  G06Q10/06313 ,  G06Q10/0635

摘要： A system and method for calculating task times for a project. A project estimating system is disclosed that allocates time to a list of tasks, comprising: a system for determining a total project time to complete a project; and a time allocation system that generates a task time for each task based on the total project time and an estimating factor associated with each task, wherein the time allocation system includes an iterative algorithm that iteratively calculates an adjustment factor to be applied to each task. Finally, the calculated adjustment factor can be compared against preset levels and provide an indication of project risk and the likelihood that the project will complete on time.

摘要翻译： 用于计算项目任务时间的系统和方法。 公开了一种将时间分配给任务列表的项目估计系统，包括：用于确定完成项目的总项目时间的系统; 以及时间分配系统，其基于总项目时间和与每个任务相关联的估计因素来生成每个任务的任务时间，其中所述时间分配系统包括迭代计算要应用于每个任务的调整因子的迭代算法。 最后，将计算出的调整因子与预设水平进行比较，并提供项目风险的指示和项目按时完成的可能性。