Is Shimano about to respond to SRAM's Transmission? A couple of patents hint at a Shimano Direct Mount Derailleur with a rigid bracket device
, US Patent 20220204134 A1 describes and depicts a rear derailleur mounted to the dropout in a very similar fashion to the T-Type Direct-Mount Derailleur from SRAM; i.e., a hanger-less design with a mounting portion that occupies space onThe patent document in question centers around the “bracket device” of the rear derailleur, and shows it in use with what otherwise looks like a regular mechanical rear derailleur. Let’s take a closer look.
That’s a rather dry way of describing what can be seen in Fig. 2 and Fig. 7. These shed a bit more light as to why we’ve bothered sharing the contents of this patent document with you readers. Looks familiar, doesn’t it? Importantly, it looks as though this Direct-Mount Derailleur from Shimano will be able to accomodate different size cassettes. Labelled as 54 in Fig. 4, a screw is positioned around about where you might expect to see the B-Screw. The document describes this portion as the “angular position adjustment structure”. It serves to dictate the position of the rear derailleur relative to the frame and thus the sprockets of the cassette.
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