Damper device

Details Damper device Damper device

2008-09-30

2008-09-30

Schwartz, Christopher P (Department: 3683)

Brakes

Internal-resistance motion retarder

Using a rotary-type fluid damper

C016S051000, C188S293000

Reexamination Certificate

active

11783317

ABSTRACT:
A damper device used in a range of electronic apparatuses. The damper device allows a diverse opening and closing operations by means of a simple structure. A stationary plate and a movable plate resiliently contact, due to the action of a spring, over different contact areas as a movable shaft rotates. This enables a change in a damping force in accordance with opening and closing angles. Accordingly the damper device which allows diverse opening and closing operations, such as to open at a constant speed from immediately after starting to open, is achievable by means of a simple structure.

REFERENCES:
patent: 2514137 (1950-07-01), O'Connor
patent: 3651903 (1972-03-01), Butler et al.
patent: 4938322 (1990-07-01), Sugasawara et al.
patent: 5301775 (1994-04-01), Nedbal et al.
patent: 5305858 (1994-04-01), Haga et al.
patent: 7216744 (2007-05-01), Mower
patent: 2004-150575 (2004-05-01), None

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