Lifting device in the form of a lifting column
AssigneeSefac
InventorEric LETELLIER
Life of this patent
Estimating the term…
Abstract
A lifting device for vehicles includes a column forming a frame, extending substantially vertically above a base, and a lifter movable along the column by controlling the rotation of a threaded rod by a driving device and by the movement, along the threaded rod, of a nut secured to a carriage on which the load to be lifted can rest. There is a fall-arresting safety device including a ratchet occupying at least a first unlocked position and a locked position engaging with at least one tooth of a ratchet wheel so as to lock the rotation of the threaded rod. There is a retaining device for the ratchet in the unlocked position and a controller for the return of the ratchet to the locked position.
Claims9
A lifting device for a vehicle, said lifting device comprising:
- a column forming a frame, extending substantially vertically above a base;
- lifting means movable along said column, under action of rotational control, by appropriate motor means, of a threaded rod and movement, along said threaded rod, of a nut secured to a carriage on which the load to be lifted can rest;
- and
- fall arresting safety means for the lifted load, wherein said fall arresting safety means comprises a ratchet occupying at least a first unblocking position and a blocking position cooperative with at least one tooth of a ratchet wheel to block the rotation of the threaded rod and a retaining means in the unblocking position and control means for returning to the blocking position.
Dependencies are inferred from the claim text.