Brakes – Internal-resistance motion retarder – Having a thrust member with a variable volume chamber
Patent
1986-07-29
1988-07-26
Kashnikow, Andres
Brakes
Internal-resistance motion retarder
Having a thrust member with a variable volume chamber
18832222, 1883225, F16F 500, F16F 900, F16F 1100
Patent
active
047594284
ABSTRACT:
A viscoelastic damper which is adapted to control the vibration of a structural member, a tank, a pipe, etc. which may be caused by an earthquake or wind while producing minimum reaction force when the structural member and so on is slowly displaced as a result of the thermal deformation of the member itself or another member connected thereto. Such a property of a viscoelastic damper can be obtained by using dilatant liquid which presents relatively small resistance when the speed of the motion is small and produces progressively great resistance as the speed of the motion increases. To the end of enhancing this favorable property of the viscoelastic damper, the shoulder surfaces that are exposed to the dilatant liquid are rounded. By providing a spiral groove or projection in the member exposed to the dilatant liquid to produce rotational motion between the two ends of the damper, this property is enhanced even more.
REFERENCES:
patent: 1269606 (1918-06-01), Hovas
patent: 2875861 (1954-03-01), Lucien
patent: 3157070 (1964-11-01), Heidrich
Jeffers Albert L.
Kashnikow Andres
NHK Spring Co. Ltd.
Potosnak Richard
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