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US 4,656,779 AGranted
Block system for doors, windows and the like with blocking members automatically slided from the door frame into the wing
OwnerBenedetto Fedeliinventor
Life of this patent
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OwnerBenedetto Fedeliinventor
Estimating the term…
A blocking system for doors, windows and the like, particularly of the armored type, to have antitheft, antibreaking, fluid-tight and soundproof features, comprising a frame (11), a wing (12) and two pairs of mechanically interconnected blocking members (13,13'-14,14') which are arranged in housing slots (15,15'-16,16') provided along the opposite perimetrical flat inner edges of the frame (11) and sliding into facing slots (17,17'-18,18') of the wing (12) by the tension action of springs (34,34') to close the door, the backwards motion of these blocking members being carried out by the pushing action of a pin (38) which is manually operated through a central control device (20), when the door is to be opened. The outwards and backwards motions of the blocking members are synchronous and the outwards motion of same from the housing slots of the frame into facing slots of the wing is automatically provided by means of the tension of springs (34,34').
A blocking system for doors, comprising a door frame, a door wing, and two pairs of mechanically interconnected blocking members disposed in slots in said frame and adapted to slide into confronting slots in the edges of the door wing, said blocking members comprising four bars one disposed in each of said frame slots and extending parallel to and adjacent an associated said edge of the door wing, rack and pinion means mechanically interconnecting said bars for conjoint movement into and out of the slots in the door wing thereby respectively to block and unblock the door wing, spring means continuously urging said bars toward said door wing slots, and a central control device on said door wing to push one said blocking member into its associated said housing slot thereby simultaneously to push all said blocking members into their respective housing slots.
Dependencies are inferred from the claim text.