Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Hinge – Resiliently biased hinge
Patent
1992-06-23
1994-06-21
Cuda, Armine
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Hinge
Resiliently biased hinge
16301, 16308, E05F 108
Patent
active
053218701
ABSTRACT:
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 inserted into the door. One end of a second torsion bar is engaged with the connecting member so as to be unable to rotate and movable in the longitudinal direction and the second torsion bar is extended toward the one end of the first torsion bar and the other end of the second torsion bar is fixed to the door.
REFERENCES:
patent: 18164 (1857-09-01), Torrey et al.
patent: 2810153 (1957-10-01), Semar
patent: 2869959 (1959-01-01), Kesling
patent: 3109194 (1963-11-01), Hay
patent: 4696078 (1987-09-01), Stromquist
patent: 4905347 (1990-03-01), Worth
Hiruma Kenichi
Wada Hideatsu
Cuda Armine
Sanyo Electric Co,. Ltd.
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