Safety device for mechanisms for lifting the back of a chair or

Details Safety device for mechanisms for lifting the back of a chair or Safety device for mechanisms for lifting the back of a chair or

1997-10-30

1999-07-06

Cuomo, Peter M.

Chairs and seats

Movable back

29741136, 24829731, A47C 754

Patent

active

059189380

ABSTRACT:
A safety device, particularly usable for mechanisms for lifting a back of a chair or armchair of the type that comprising a blade-like element which is slidingly associated between a first and a second supporting plate for a back; the blade-like element protrudes to the rear of, and above, a seat and has a first recess for a rack with two mutually opposite and offset sets of teeth, which interacts with a complementarily toothed ratchet element which cooperates with elements for forcing the locking of the sliding of the blade-like element as a consequence of a sudden movement imparted to the back in an upward or downward direction.

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