DOOR BLOCK

construction, in particular, door blocks. SUBSTANCE: door block has a metal door frame secured in the wall opening with a frame ledge confining the door opening with working surfaces chambered outside, door leaf hinge-joined to the door frame and having a trapeziform section in the horizontal plane,...

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Bibliographic Details
Main Authors DYBOV V.A, SMOTROV A.P, PETROV E.V
Format Patent
LanguageEnglish
Published 27.06.2000
Edition7
Subjects
DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL
FIXED CONSTRUCTIONS
FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES,FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS,BLINDS, GATES
LADDERS
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Summary:construction, in particular, door blocks. SUBSTANCE: door block has a metal door frame secured in the wall opening with a frame ledge confining the door opening with working surfaces chambered outside, door leaf hinge-joined to the door frame and having a trapeziform section in the horizontal plane, and a closing device fixing the door leaf in the position, in the which the end surfaces of the door leaf are pressed to the working surfaces of the frame ledge having the shape of the surfaces adjoining them. The working surfaces of the frame ledge have the shape of the are section of convex cylindrical surface. The end surfaces of the door leaf pressed to the working surfaces of the frame ledge have the shape of the are section of concave cylindrical surface. EFFECT: enhanced reliability of room locking at an attempt of breaking in. 6 cl, 5 dwg
Bibliography:Application Number: RU19980123670