This paper presents the Spherical Joint Mechanism, a new mechanism for implementing multiple collocated spherical joints. The mechanism is designed to be strong, rigid, easy to build and have a large range of motion. Two different design concepts are presented and compared to other implementations of spherical joints previously proposed. Finally, implementation issues and potential applications...

For many years U.S. design codes modeled the design values of a multiple-bolt joint as the design value of a single-bolt connection multiplied by the number of bolts. The provisions were based on research conducted by Trayer (1932) who observed an equal distribution of load among bolts. This was despite the fact that research conducted as early as in the late 19 century suggested an uneven load...

Tip clearance has a great effect on the flow and pressure fluctuation characteristics in multiphase pump, especially at multiple operating points. The phase distribution tip pump are revealed using CFD (computational fluid dynamics) technology high-speed photography methods. In this paper, distribution, gas-liquid two-phase velocity slip, intensity comprehensively analyzed. Results show with in...

In recent years the joints mechanically bolted and glued has drawn the attention of the scientific community, the growth of its applications in various sectors of engineering. An advantageous feature of mechanical joints is the low sensitivity to surface preparation, service temperature or humidity. In addition to allowing the removal of a greater number of times without damaging the structure....

INTRODUCTION Although osteoarthritis (OA) commonly involves multiple joints, no widely accepted method for quantifying whole-body OA burden exists. Therefore, our aim was to apply factor analytic methods to radiographic OA (rOA) grades across multiple joint sites, representing both presence and severity, to quantify the burden of rOA. METHODS We used cross-sectional data from the Johnston Cou...

We report two cases of osteomyelitis secondary to staphylococcal septicaemia, presenting with large sterile effusions in adjacent joints. In both cases the clinical features were suggestive of septic arthritis. Multiple joints were involved in each patient. Initial radiographs showed no abnormalities.

A patient with acute polyarthritis due to crystal-positive simultaneous gout and pseudogout affecting different joints is described. The case emphasises the importance of aspirating more than one involved joint and carefully searching for crystals in patients with acute arthritis involving 2 or more joints, particular those in whom the diagnosis of multiple crystalline joint disease is considered.

This study reviewed the literature on experimental and analytical research for the connection of wood members using multiple laterally loaded bolts. From this, the influence of geometric factors were ascertained, such as staggered and aligned fasteners, optimum fastener configurations, row factors and length-to-diameter bolt ratios, spacing, end and edge distances, and the effect of mixed types...

1. We studied seven subjects with cerebellar lesions and seven control subjects as they made reaching movements in the sagittal plane to a target directly in front of them. Reaches were made under three different conditions: 1) "slow-accurate," 2) "fast-accurate," and 3) "fast as possible." All subjects were videotaped moving in a sagittal plane with markers on the index finger, wrist, elbow, a...