Abstract: A multi-node communication network may include a plurality of nodes including a first node and a second node. Each of the plurality of nodes may include a communication interface and a controller. The first node may be configured to: obtain an uncompressed packet, the uncompressed packet having uncompressed header data and a payload; compress the uncompressed header data into compressed header data having a tag and at least one compressed unit (CU), the tag indicating at least one type of compression for the at least one CU; and transmit a packet having the compressed header data and the payload to the second node. The second node may be configured to: receive the packet having the compressed header data and the payload; and based at least on the tag, decompress the at least one CU.

Abstract: A novel spacer support for attachment of chain sprockets of dead axle rollup doors. The spacer support is comprised of three spacer tubes and a support member. The spacer tubes and the support member are all formed as a unitary part.