Impact protected screw lift system suitable for residences

Details Impact protected screw lift system suitable for residences Impact protected screw lift system suitable for residences

B - Operations, Transporting

66

B

187/11

B66B 11/04 (2006.01)

Patent

CA 1297804

Abstract A screw lift comprises a lift car (2), which is movably supported on an upright fixed screw (4) and carries a nut (54) in engagement with the screw and a belt drive means for rotating the nut on the screw and thereby driving of the lift car along the screw. The nut (54) is rotatably journalled in a lubrication and bearing housing (62), which is connected with the lift car (2) and out of which it extends with a portion, that widens essentially conically and carries a belt pulley (56) with a correspondingly conically shaped hole. The belt pulley and the nut are mutually somewhat axially shiftable. A pulse transmitter (130,132) is arranged as the only position, direction and velocity determining means for the lift for sensing the position of the nut on the screw and emitting signals corresponding thereto. (Figure 7).

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