Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Checks and closers – Liquid
Patent
1978-04-04
1980-03-04
Krizmanich, George H.
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Checks and closers
Liquid
16 50, 16153, E05F 320
Patent
active
041909259
ABSTRACT:
A door-closer and hinge combination includes a pair of hinge plates adapted respectively to be fixed to a door and door frame, these plates respectively carrying a pair of extensions which are situated along a predetermined hinge axis and which are formed with coaxial bores, the axis of which coincides with the hinge axis, these bores receiving a hinge pin for hingedly connecting the hinge plates to each other. An elongated force-transmittingrod extends parallel to the hinge axis and is guided by a pair of guide sleeves carried by one of the hinge plates for movement parallel to the hinge axis. The force-transmitting rod carries a helical cam-follower which cooperates with a cam slot formed in the other hinge plate, which does not carry the guide sleeves, this other hinge plate preferably being fixed to a door so that upon opening the door the rod is vertically displaced. A structure which is capable of storing a force is operatively connected with the force-transmitting rod to store a force while the force-transmitting rod is displaced in a door-opening direction during opening of a door, as a result of the coaction between the cam and cam-follower. Upon closing of the door, the force which is stored is utilized to act on the force-transmitting rod so that through the latter and the cam and cam-follower a closing force is provided on the door to urge the latter to a closed position.
REFERENCES:
patent: 2604653 (1952-07-01), Anderson et al.
patent: 3098258 (1963-07-01), Ruiz
patent: 3707014 (1972-12-01), Koivusalo
patent: 3748688 (1973-07-01), Berkowitz
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