Vibration control apparatus

Details Vibration control apparatus Vibration control apparatus

1994-03-23

1995-09-19

Butler, Douglas C.

Brakes

Internal-resistance motion retarder

Using yieldable or fluent solid or semisolid

188378, 1883225, 267136, F16F 930

Patent

active

054509319

ABSTRACT:
A thixotropic material is charged in a container. The container also holds a movable member which is placed in the thixotropic material so as to stir the thixotropic material. A force transmitting element is connected to the movable member. When an object, the vibration of which is to be controlled, is out of resonance, the amplitude of vibration is so small that the thixotropic material is in a gel state, thus presenting a comparatively large spring constant for the vibration control apparatus. As the excitation frequency is increased towards the resonance range, the amplitude of vibration is increased correspondingly, so that the movable member stirs the thixotropic material to generate stress in the latter, whereby the phase of the thixotropic material is changed from gel to sol. Consequently, the natural frequency of the vibration system, including the object and the vibration control apparatus, is lowered, thus averting resonance. It is thus possible to obtain vibration restraining or control effect over a wide range of excitation frequencies.

REFERENCES:
patent: 2732040 (1956-01-01), De Vost et al.
patent: 2830833 (1958-04-01), Alldredge et al.
patent: 3134585 (1964-05-01), Trask
patent: 3251076 (1966-05-01), Burke
patent: 3417660 (1968-12-01), Harbrecht
patent: 3494607 (1970-02-01), Rusch
patent: 3503600 (1970-03-01), Rich
patent: 3610604 (1971-10-01), Terai
patent: 3648983 (1972-03-01), Campbell
patent: 3747914 (1973-07-01), Thrasher
patent: 3874646 (1975-04-01), Vernier
patent: 4121812 (1978-10-01), Dousset
patent: 4471538 (1984-09-01), Pomeranz et al.
patent: 4504044 (1985-03-01), Shtarkman
patent: 4576366 (1986-03-01), Gallas et al.
patent: 4738339 (1988-04-01), Taylor
patent: 4772407 (1988-09-01), Carlson
patent: 4856626 (1989-08-01), Nakanishi
patent: 4981286 (1991-01-01), Kato et al.
patent: 5284330 (1994-02-01), Carlson et al.
Patent Abstracts of Japan, vol. 3, No. 148 (M-83) 7 Dec. 1979 & JP-A-54 125 370 (Mitsubishi Denki) 28 Sep. 1979.
Patent Abstracts of Japan, vol. 14, No. 347 (M-1002) (4290) 26 Jul. 1990 & JP-A-02 120 537 (Showa) 8 May 1990.

Affiliated with

Also associated with

Rating

Vibration control apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Vibration control apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vibration control apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1823324