a bracket with a provision safety to broadcast tree fluted

摘要

The splined shaft is locked in the splined seat of the fork by means of a push-button immobilizing element (31) designed to engage tangentially in the said annular recess; the immobilizing element (31) is accommodated in a housing (29) formed in the base (23) of the fork and is stressed elastically by a spring (33) in the immobilizing position, in which it projects, so that it can be pressed manually in order to unlock it; around the said housing (29), the base (23) of the fork has an enlarged portion (27) in which a cavity (37) is formed, within which the push-button (31A) of the immobilizing element projects when it is in the immobilizing position, while still remaining enclosed within the said cavity (37).