US Patent 7712393 Safety fold-away handle

A safety grip for a handwheel which is movable between an operating position and a home position is comprised of an elongated and ergonomic body (1) and of a support (2), which is anchored to the body of a maneuvering member, such as a handwheel. The body (1) is comprised of an outer case (1a), a rod-like inner core (3) with a head (4), a bushing (6) slidably mounted on the core (3), a sleeve (7) in sliding engagement on the bushing (6), an axial thrust spring (9) arranged between two opposite shoulders (6a) and (7a) of the bushing (6) and of the sleeve (7), and a second thrust spring (10) arranged between the head (4) and the top of the bushing (6). The body (1) is connected to the support (2) at a pivot point (5). An end of the sleeve (7) engages a contact surface of the support (2) through a collar (8). The collar (8) has an inner conical mouth surface that engages a shaped rib (11) on the top of said support (2), where the shaped rib (11) has a frusto-conical outer surface.