Elevator safety apparatus
AssigneeKone Elevator GmbH
InventorHelge Korhonen
Life of this patent
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Abstract
An elevator safety apparatus is disclosed which is designed to be mounted on an elevator car, which car moves along guide rails; said apparatus comprising a frame, an area for wedge housings formed in the frame, and wedges placed in the wedge housings on each side of a guide rail; the wedges gripping the guide rail when the safety apparatus is activated, the wedges being placed relative to each other such that the wider end of one wedge points upwards while the wider end of the second wedge points downwards. To allow safety apparatus action in both an upward and downward direction, the apparatus is provided with an activating mechanism connected to and moving both wedges, and an overspeed governor, or the equivalent, for controlling the activating mechanism.
Claims9
A safety apparatus adapted for mounting on an elevator car purposed for movement along guide rails, comprising:
- a spring-mounted frame for vertically slidable engagement with and bi-directional lateral movement in relation to the guide rail;
- at least two wedge housings disposed within said frame, said wedge housings being disposed on opposed faces of a guide rail opening formed within said frame and at least one wedge being disposed in each of said wedge housings;
- wherein said wedges are disposed in inverted opposed relationship to each other;
- and
- each of said wedges having an activating means connected thereto for vertically displacing said wedge, whereby said frame is predeterminately laterally displaced thereby bringing an opposed wedge into contact with the guide rail causing the guide rail to be gripped interjacent said wedges.
Dependencies are inferred from the claim text.