Abstract: A particle agglomeration system for improving filtering capacity of an HVAC system is disclosed. The system may include a first plate. The first plate may include a first sound generator. The system may include a second plate. The second plate may include a second sound generator. The system may include a frame. The frame may be configured to position the first plate relative to the second plate. A standing sound wave may be formable between the first sound generator and the second sound generator.

Abstract: In embodiments, a user device stores a certificate that both identifies the user and indicates what the user is authorized to access. When access is desired, the certificate is provided. Instead of a user login and password, the signed certificate functions to identify the user (and also the user device). Instead of separately accessing an administrator table to verify whether the user is authorized to access the website or program or other resource, the certificate on the user device is consulted.

Abstract: A self-expanding intravascular medical device including a multi-component assembly with a self-expanding outer cage component comprising a plurality of struts; and a single cell wave-shape component disposed within the self-expanding outer cage component forming a channel therein. The proximal end of the single cell wave-shape component is connected to the self-expanding outer cage component at a proximal joint.

Abstract: A pitch bearing for connecting first and second articles is provided. The first article includes a first curved outer surface and the second article includes a second curved outer surface opposite the first curved outer surface. The pitch bearing includes an axisymmetric structure interposed between the first and second curved outer surfaces. The axisymmetric structure includes compliant layers and stabilizing layers interleaved between the compliant layers. The compliant layers and the stabilizing layers proximate to the first article haves a curvature matching that of the first curved outer surface. The compliant layers and the stabilizing layers proximate to the second article have a curvature matching that of the second curved outer surface. A shear stiffness of each of the stabilizing layers is greater than a shear stiffness of each of the compliant layers.

Abstract: A spar for a rotor blade assembly is provided including a generally hollow tubular body. A spacer protrudes from at least one surface of the body along a length of the body. A hole extends through the body and the spacer. The hole is configured to align with a through hole in an adjacent flexbeam assembly. The spacer is configured to contact a surface of the adjacent flexbeam assembly to create a match fit between the body and the flexbeam assembly.

Abstract: A rotor hub assembly for a helicopter includes a rotor hub operably connectable to a shaft of a helicopter. One or more flex beams extend through the rotor hub, with each end of each flex beam operably connectable to a rotor blade. One or more inner bearings are located at the rotor hub to spherically support the one or more flex beams in the rotor hub. A rotor assembly for a helicopter includes a rotor hub operably connectable to a shaft of a helicopter. One or more flex beams extending through the rotor hub and one or more inner bearings are located at the rotor hub to spherically support the one or more flex beams in the rotor hub. A plurality of rotor blades are operably connected to the ends of the one or more flex beams.

Abstract: A rotor blade assembly includes a flex-beam member and a torque tube surrounding the flex-beam member and extending partially along a rotor blade assembly length. A rotor blade surrounds the flex beam member and extends from the torque tube to a blade tip. A connecting assembly secures the rotor blade and the torque tube at the flex-beam member. The connecting assembly includes a first connecting member extending at least partially into the rotor blade assembly through the rotor blade from a first rotor blade side and a second connecting member located at a second rotor blade side. A clamping load between the first connecting member and the second connecting member secures the rotor blade and torque tube to the flex-beam member.

Abstract: A rotor blade assembly includes a flex-beam member and a torque tube surrounding the flex-beam member and extending partially along a rotor blade assembly length. A rotor blade surrounds the flex beam member and extends from the torque tube to a blade tip. A connecting assembly secures the rotor blade and the torque tube at the flex-beam member. The connecting assembly includes a first connecting member extending at least partially into the rotor blade assembly through the rotor blade from a first rotor blade side and a second connecting member located at a second rotor blade side. A clamping load between the first connecting member and the second connecting member secures the rotor blade and torque tube to the flex-beam member.

Abstract: A rotor blade assembly includes a flex-beam member and a torque tube surrounding the flex-beam member and extending partially along a rotor blade assembly length. A rotor blade surrounds the flex beam member and extends from the torque tube to a blade tip. A connecting pin assembly secures the rotor blade and the torque tube at the flex-beam member. The connecting pin assembly includes a first pin member having a first shaft extending at least partially into the rotor blade assembly through the rotor blade from a first rotor blade side and a second pin member located at a second rotor blade side. A clamping load between the first pin member and the second pin member secures the rotor blade and torque tube to the flex-beam member.

Abstract: A wireless communications system may include a plurality of wireless communications devices (WCDs). A source WCD from among the plurality of WCDs may be configured to designate message data for at least one target WCD from among the plurality of WCDs, where the message data has a security restriction associated therewith. At least one intermediary WCD from among the plurality of WCDs may be configured to wirelessly receive the message data from the source WCD when in proximity thereto, and with restricted access to the message data based upon the security restriction. The at least one target WCD may be configured to wirelessly receive the message data from the at least one intermediary WCD when in proximity thereto and with less access restriction to the message data than the at least one intermediary WCD.

Abstract: A pitch bearing for connecting first and second articles is provided. The first article includes a first curved outer surface and the second article includes a second curved outer surface opposite the first curved outer surface. The pitch bearing includes an axisymmetric structure interposed between the first and second curved outer surfaces. The axisymmetric structure includes compliant layers and stabilizing layers interleaved between the compliant layers. The compliant layers and the stabilizing layers proximate to the first article haves a curvature matching that of the first curved outer surface. The compliant layers and the stabilizing layers proximate to the second article have a curvature matching that of the second curved outer surface. A shear stiffness of each of the stabilizing layers is greater than a shear stiffness of each of the compliant layers.

Abstract: A rotor blade assembly includes a flex-beam member and a torque tube surrounding the flex-beam member and extending partially along a rotor blade assembly length. A rotor blade surrounds the flex beam member and extends from the torque tube to a blade tip. A connecting pin assembly secures the rotor blade and the torque tube at the flex-beam member. The connecting pin assembly includes a first pin member having a first shaft extending at least partially into the rotor blade assembly through the rotor blade from a first rotor blade side and a second pin member located at a second rotor blade side. A clamping load between the first pin member and the second pin member secures the rotor blade and torque tube to the flex-beam member.

Abstract: A rotor system includes a lead stop mounted to a spindle and a lead stop plate mounted to a rotor hub arm, the lead stop operable to contact the lead stop plate over a lead angle range.

Abstract: A rotor blade assembly includes one or more flex-beam members and a torque tube surrounding the one or more flex-beam members and extending at least partially along a rotor blade assembly length. A pitch bearing assembly is supportive of the torque tube relative to the one or more flex-beam members and includes at least two outer bearing members secured to the torque tube and an inner bearing member positioned at least partially within the at least two inner bearing members and secured to the one or more flex beam members. A change in a stiffness of the inner bearing member changes one or more dynamic characteristics of the rotor blade assembly.

Abstract: A spar for a rotor blade assembly is provided including a generally hollow tubular body. A spacer protrudes from at least one surface of the body along a length of the body. A hole extends through the body and the spacer. The hole is configured to align with a through hole in an adjacent flexbeam assembly. The spacer is configured to contact a surface of the adjacent flexbeam assembly to create a match fit between the body and the flexbeam assembly.

Abstract: The present disclosure provides for selective delivery of social network messages within a social network. When it is determined that one or more new messages to be communicated to members of a social group of the social network have content substantially similar to a given content of a plurality of messages previously communicated to the social group, notification of the one or more new messages to the one or more members of the social group can be selectively adjusted.

Abstract: Methods and apparatus to support personal information management are described. One example method includes receiving personal information of a user from a mobile device through close-proximity communication, accessing verification information related to the personal information, obtaining biometric information; and verifying the personal information based on the biometric information and based on a comparison of the verification information and the personal information.

Abstract: Methods and apparatus to provide haptic feedback are disclosed. One example method includes receiving a goal condition at a mobile device, requesting information from a host device using a first close-proximity communication, receiving the information at a mobile device using a second close-proximity communication, determining a level of haptic feedback based on the received information and the goal condition, and causing a haptic effect on the mobile device based on the level of haptic feedback. Other implementations are possible.

Abstract: A method, system and computer-program product for deploying a package of objects in a learning management system. The method includes the steps of transmitting a Shareable Content Object Reference Model (SCORM) package to a SCORM Learning Management System (LMS); parsing out from the SCORM package a copy of a list of resources needed to deploy the SCORM package from the LMS; comparing names of all resources needed to deploy the SCORM package with an inventory of resources available to the LMS; in response to a name of one of the resources needed to deploy the SCORM package not matching any name in the inventory of resources available to the LMS, updating the name of the non-matching named resource to match a name of a resource in the inventory of resources available to the LMS; and deploying the SCORM package by launching the SCORM package with the corrected list of resources.

Abstract: Example methods and apparatus to control presentation devices are described. One example method includes establishing a communication link between a mobile device and a first external presentation device, receiving, via a user interface of the mobile device, a first selection of a first application to be displayed on a destination external presentation device, receiving, at the mobile device, a first indication via the communication link that the first external presentation device was selected as the destination external presentation device for the first application, and causing the first application to be displayed on the first external presentation device.