Abstract: The present invention relates to a linear actuator with an improved electric motor. In particular, the invention focuses on improved technical solutions for braking or locking of a rotating electric motor by using an electro-mechanical locking mechanism. The mechanism uses a solenoid having a nonrotating locking element, which is displaceable by solenoid action and arranged to engage with a rotating locking element. In particular, solutions have been found in which a surprisingly small solenoid with a much-reduced requirement on stroke length may be deployed to effectively unidirectionally or bidirectionally lock against rotation of the motor.

Abstract: The invention relates to a supporting frame with a base unit comprising a compartment at least for partial reception of the housing of the lifting column (79) and a cross member (74) for mounting on the base unit (59). The supporting frame comprises a locking element (94), which when placed in-a locked position exerts a squeezing force between the base unit (59), the lifting column housing and the cross member (74), by which the lifting column housing and the cross member (74) are fixed in the base unit (59). The supporting frame further comprises means for retaining the locking element in the locked position. The lifting columns are of the type, which comprises telescopically arranged profiles with an upper and lower end to which upper end a housing is secured.

Abstract: The invention relates to a supporting frame with a base unit comprising a compartment at least for partial reception of the housing of the lifting column (79) and a cross member (74) for mounting on the base unit (59). The supporting frame comprises a locking element (94), which when placed in-a locked position exerts a squeezing force between the base unit (59), the lifting column housing and the cross member (74), by which the lifting column housing and the cross member (74) are fixed in the base unit (59). The supporting frame further comprises means for retaining the locking element in the locked position. The lifting columns are of the type, which comprises telescopically arranged profiles with an upper and lower end to which upper end a housing is secured.

Abstract: The invention relates to a supporting frame with a lifting column (59) comprising telescopically arranged profiles with an upper and lower end, said upper end having a housing (60) secured thereto, and a base unit (61,62,63) with a compartment at least for partial reception of the lifting column housing (60) and a locking element (75), which when placed in a locked position exerts a squeezing force between the base unit (61,62) and the housing (60) of the lifting column (59). Thus, the housing (60) of the lifting column (59) is positioned and fixed in the base unit (61,62,63). The supporting frame further comprises means for retaining the locking element (78) in the locked position.