Abstract: An inner tubular wall is concentrically located inside an outer tubular wall to form an annular space therebetween. A bearing is retained within the annular space. The bearing can include a pair of precision angular contact bearings. the bearing may also include an axial sleeve bearing. A frangible element such as an annular shear groove is associated with one of the outer tubular wall and the inner tubular wall. Separation occurs at the frangible element and the bearing supports the inner tubular wall member and the outer tubular wall member for rotation relative to each other upon the coupling assembly experiencing a shear event. In addition, the angular contact bearings may reduce any bending moments that might otherwise impact upon the frangible element during normal operation. The frangible element may be treated, for example, by shot-peening or coating to reduce deterioration of the frangible element during normal operation.

Abstract: A CAD drawing generation and delivery system comprises a CAD module that produces CAD documents. A CAD automation module receives design specifications including a selection of system components, an arrangement of the components, and a dimension relating to at least one of the components, and selectively operates the CAD module to generate one of the CAD drawings based on the design specifications. A server delivers the CAD drawing to a user at a remote location via a distributed communications system.

Abstract: A system for designing a set of coupling components for coupling driving and driven shafts comprises an input module that provides a user interface for entering user input including one or more design parameters and/or user selections. A coupling selection and design module attempts to design at least one set of coupling components that meet the design parameters based on the user selections. An output module generates a coupling design specification file based on a selected one of the sets of coupling components from the coupling selection and design module.

Abstract: A flexible power transmission coupling wherein a drive member is connected to a driven member by a link assembly. The links are stacked and connected in series. Each link has a first end, a second end and an intermediate part. The first ends of each link are connected together and to the driven member, the second ends of each link are connected together and to a driven member or vice versa. The intermediate part of each link is convoluted and narrower than the ends. This allows greater axial and angular misalignments between drive and driven members. Also this results in a more linear relation between axial force and deflection of the coupling.