Abstract: Various braking devices, systems, and methods are disclosed. In some embodiments, the braking device includes a support element, a block of friction material supported by the support element, at least one piezoceramic sensor supported by the support element and interposed between the block of friction material (and the support element, and a protective element located at the piezoceramic sensor and embedding the latter. The protective element can have one or more layers of resin-based material applied to protect the piezoceramic sensor and direct a predetermined part of the external compression force onto an area of the support element surrounding the piezoceramic sensor. In some embodiments, a signal transduction device is provided and includes at least one piezoceramic sensor supported on a support element and has an integral protective coating having properties of mechanical and temperature resistance.

Abstract: A fast locking device for at least one tool (9) on at least a guide element (8) comprising: a fixing element (2) provided with at least one first opening (29) for the through-passage of at least one tool (9); a base (3) removably lockable to the fixing element (2), via clutch means, provided with a stop surface (31), opposite to the fixing element (2), at an end of which there is a locking element (38) to at least partially engage the guide element (8); a hook-like element (4) revolvingly locked to the base (3) between a release condition (A) and a locking condition (B) for the guide element (8); a cursor element (7) sliding internally to the fixing element (2) and to the base (3) and provided with at least one second opening (79) and one hollow (74) which engages a projection (47) present on the hook-like element (4); a locking means (6) which internally engages the cursor element (7) and is provided with an inner end (69) that leads to the inside of the first opening (29) and of the second opening (79) a