Abstract: In an example method, a communications platform generates a plurality of logical structures. The communication platform receives, from a first user, first content to be shared within a first logical structure of the plurality of logical structures. The communications platform determines one or more second users associated with the first logical structure, and transmits contents of the first logical structure including the first content to the one or more second users.

Abstract: In an example method, a communications platform generates a plurality of logical structures. The communication platform receives, from a first user, first content to be shared within a first logical structure of the plurality of logical structures. The communications platform determines one or more second users associated with the first logical structure, and transmits contents of the first logical structure including the first content to the one or more second users.

Abstract: An axle seal used to prevent lubricant from leaking between a rotating shaft and a shaft bore. The seal includes: a peripheral connection section reliably connected to an inner edge of the shaft bore; an extensible and retractable adjustment section connected to the peripheral connection section, allowing the seal to make extension and retraction adjustment in a radial direction; and a sealed contact section connected to the inner edge of the extensible and retractable adjustment section and potentially in sealed contact with the surface of the rotating shaft. The seal contains an alignment follower that can synchronously transfer a radial movement of the rotating shaft to the inner edge of the extensible and retractable adjustment section. One application would be an oil seal between a front cover and crankshaft.

Abstract: An axle seal used to prevent lubricant from leaking between a rotating shaft and a shaft bore, for example, sealed fittings between the rotating shaft and shaft bore where static misalignment and/or dynamic misalignment exceeds conventional extent. The seal includes: a peripheral connection section reliably connected to an inner edge of the shaft bore; an extensible and retractable adjustment section connected to the peripheral connection section, allowing the seal to make extension and retraction adjustment in a radial direction; and a sealed contact section connected to the inner edge of the extensible and retractable adjustment section and potentially in sealed contact with the surface of the rotating shaft. The seal contains an alignment follower that can synchronously transfer a radial movement of the rotating shaft to the inner edge of the extensible and retractable adjustment section. One application would be an oil seal between a front cover and crankshaft.

Abstract: An advertising referral service operates a referral service website including a listing agent interface that allows a listing agent to offer ads for placing on websites and a hosting agent interface that allows a hosting agent to select an ad offered by the listing agent and place the selected ad on the hosting agent's website. When a visitor to the hosting agent's website activates the listing agent's ad, the referral service records a credit entry to the hosting agent and a debit entry to the listing agent. The referral service reports the credit and debit entries to the hosting agent and to the listing agent.