Equilibrated hinge with variable frictional torque

Details Equilibrated hinge with variable frictional torque Equilibrated hinge with variable frictional torque

1997-01-22

1998-06-30

Mah, Chuck

Miscellaneous hardware (e.g., bushing, carpet fastener, caster,

Hinge

Resiliently biased hinge

16299, E05F 108

Patent

active

057715408

ABSTRACT:
A hinge that provides equilibration and variable friction for a display screen or a laptop lid. In the preferred embodiment, a torsion rod provides a restoring force which increases as the lid is moved either direction from its vertical position. A friction hinge, of well know design, uses a spring band about a shaft. One end of the torsion rod is coupled to the end of the band of the friction hinge, so that the moment in the torsion rod increases or decreases the moment in the spring band of the hinge, modifying the frictional torque accordingly. This allows the frictional torque to be low as the lid is first opened, and larger as the display reaches the useful range of its motion.

REFERENCES:
patent: 1102556 (1914-07-01), Swartz
patent: 3209391 (1965-10-01), Mangini
patent: 3787923 (1974-01-01), Peterson
patent: 3965533 (1976-06-01), Frohlich
patent: 5079799 (1992-01-01), Rude et al.
patent: 5231734 (1993-08-01), Rude
patent: 5333355 (1994-08-01), Beswick et al.
patent: 5393160 (1995-02-01), Ojima
patent: 5515876 (1996-05-01), Warner et al.

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