|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||16/300 ; 16/301 ; 16/308|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 13 인용 특허 : 0|
A torsion bar apparatus for a self-closing door. The longitudinal dimension of the apparatus is reduced while the initial torque when the door is closed is maintained and the weight applied to the user during the door opening operation is reduced. One vertical side of a door is rotatably supported by a frame by means of hinges. One end of a first torsion bar is fixed to a frame, and a connecting member is fixed to the other end of the first torsion bar so as to be unable to rotate. In this state the first torsion bar is rotatably and vertically movably i...
A torsion bar apparatus for a self-closing door which produces action force in the direction in which said door rotatably supported by a frame is closed, said torsion bar apparatus comprising: a first elongated torsion bar with one end thereof fixed to said frame; a connecting member which is fixed to the other end of said first torsion bar so as to be unable to rotate and which is vertically movable and rotatably inserted into said door; a second elongated torsion bar one end of which is engaged with said connecting member so as to be unable to rotate a...