Safety cover for cable shafts has side edges fitting support in cable shaft, with holding electromagnet in, or on, or round support for safeguarding access to cable shaft proper

摘要

Safety cover (4) for cable shaft (1) fits with side edges on support (3) in shaft. There is a holding electromagnet (7) in, on or about support. Position of safety cover may be monitored by sensor and safety cover may include ferromagnetic holding strip (8).