Rotating damper

Details Rotating damper Rotating damper

2008-01-29

2008-01-29

Kramer, Devon (Department: 3683)

Brakes

Internal-resistance motion retarder

Using a rotary-type fluid damper

C188S290000

Reexamination Certificate

active

11464323

ABSTRACT:
An adequate rotation angle is ensured and any member is not damaged due to fluid resistance even with use of highly viscous fluid. A rotating shaft (2) is provided inside a casing (1) having first divider walls (5) provided on its inner periphery and in direct or indirect contact with the rotating shaft. Second divider walls (4) are provided on an outer periphery of the rotating shaft and in either direct or indirect contact with the casing. A flow passage (4a) is provided in the second divider wall for fluid communication between the pressure chambers. A check valve mechanism has curving portions (6a) moving on and along the periphery of the rotating shaft and valving portions (6b) each joining to the curving portion. The curving portion is supported between the rotating shaft and the first divider wall. The flow passage is opened/closed depending upon a direction of fluid flow.

REFERENCES:
patent: 5152189 (1992-10-01), Miura et al.
patent: 5720370 (1998-02-01), Takahashi
patent: 2002/0179387 (2002-12-01), Orita
patent: 2003/0234145 (2003-12-01), Iwashita
patent: 7-301272 (1995-11-01), None
patent: 9-280290 (1997-10-01), None
patent: 10-211025 (1998-08-01), None

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