Abstract: Fans according to some embodiments of the present invention include a spider, a central hub coupled to the spider, and two or more fan blades. One or more fan design features can be employed (alone or in combination) in the fans of the present invention, including the use of spider arms and/or fan blades having twisted shapes, spider lobes having cupped shapes, spiders and/or fan blades having thinner dimensions than conventional spider and fan blades in similarly-sized fans, fan blades having narrower widths, larger camber-to-chord ratios and/or tapering camber-to-chord ratios, and embossments located on the spider or the fan blades of the fan. In addition, pre-balanced spider assemblies can be employed as an alternative to balancing a fan after assembly.

Abstract: Fans according to some embodiments of the present invention include a spider, a central hub coupled to the spider, and two or more fan blades. One or more fan design features can be employed (alone or in combination) in the fans of the present invention, including the use of spider arms and/or fan blades having twisted shapes, spider lobes having cupped shapes, spiders and/or fan blades having thinner dimensions than conventional spider and fan blades in similarly-sized fans, fan blades having narrower widths, larger camber-to-chord ratios and/or tapering camber-to-chord ratios, and embossments located on the spider or the fan blades of the fan. In addition, pre-balanced spider assemblies can be employed as an alternative to balancing a fan after assembly.

Abstract: The present invention employs improved fan blade shapes to improve fan blade performance in one or more manners (i.e., increased fan efficiency, lower fan noise, greater fluid moving capability, and the like). In some embodiments, the fan blade has a front side, a rear side, an inner attachment portion, an outer edge, a curved leading edge and a curved trailing edge. The outer edge can define an arc between a forward position and a rearward position of the fan blade. In some embodiments, the leading edge extends outward and intercepts the arc of the outer edge at the forward position, and the trailing edge extends outward to the rearward position. Various angles, lengths, and other dimensions of the blade can have selected values to produce superior fan performance.

Abstract: Fans according to some embodiments of the present invention include a spider, a central hub coupled to the spider, and two or more fan blades. One or more fan design features can be employed (alone or in combination) in the fans of the present invention, including the use of spider arms and/or fan blades having twisted shapes, spider lobes having cupped shapes, spiders and/or fan blades having thinner dimensions than conventional spider and fan blades in similarly-sized fans, fan blades having narrower widths, larger camber-to-chord ratios and/or tapering camber-to-chord ratios, and embossments located on the spider or the fan blades of the fan. In addition, pre-balanced spider assemblies can be employed as an alternative to balancing a fan after assembly.

Abstract: The present invention employs improved fan blade shapes to improve fan blade performance in one or more manners (i.e., increased fan efficiency, lower fan noise, greater fluid moving capability, and the like). In some embodiments, the fan blade has a front side, a rear side, an inner attachment portion, an outer edge, a curved leading edge and a curved trailing edge. The outer edge can define an arc between a forward position and a rearward position of the fan blade. In some embodiments, the leading edge extends outward and intercepts the arc of the outer edge at the forward position, and the trailing edge extends outward to the rearward position. Various angles, lengths, and other dimensions of the blade can have selected values to produce superior fan performance.

Abstract: A surgical table including a control system for facilitating manipulation of the table top when a patient is a normal and a reversed position. The table includes moveable table top sections whereby the table may be reconfigured from a normal configuration for receiving a patient with the patient's head at a head end of the table to a reversed configuration with the patient's head located at the foot end of the table. The controller is adapted to sense the configuration of the table and automatically reverse selectable functions for movement of the table when the table is in the reverse configuration.

Abstract: A covered cushion is provided for continuously supporting a patient over gaps which occur between adjacent sections of a surgical table. The cushion is formed with a soft foam upper layer and a flexible lower layer which is sufficiently rigid to form a support for continuously supporting the weight of a patient across a gap located between adjacent sections of the surgical table. The lower layer is formed from an x-ray transparent sheet of material such as polypropylene, with a thickness of approximately 2 mm such that the polypropylene layer is flexible while also sufficiently rigid to form a bridge supporting a patient across the gap in the surgical table. The upper layer and lower layer are surrounded by an outer cover formed of an upholstery material, such as vinyl.

Abstract: A side extender assembly for providing additional width to a surgical table. The side extender assembly includes an extender frame having at least one support leg integral therewith. The support leg includes a recess for receiving a side rail of the surgical table, and a tang defining an upper portion of the recess which extends over and behind the side rail in a mounted position. A stud is threadably engaged with the support leg for engaging a lower edge of the side rail to wedge the support leg into firm engagement with the side rail in the mounted position. A thumb screw is threadably engaged with the support leg for contacting the table frame to counteract a moment force applied against the side extender assembly by a patient. The extender frame includes an x-ray passage for permitting an x-ray panel to be inserted through the side extender assembly to a location within a frame of the surgical table.