Fluid handling – Pressure modulating relays or followers
Patent
1981-04-14
1983-09-06
Cohan, Alan
Fluid handling
Pressure modulating relays or followers
188268, 251 48, F16F 930
Patent
active
044023359
ABSTRACT:
A damping system, more specially, for measuring and automatic control systems takes the form of mass of damping liquid placed between two parts which may be moved in relation to each other and which are to be damped. By the selection of the damping liquid, as for example a silicone oil, and of the form and size of the space between the two moving parts and, furthermore, of the properties of the two parts touched by the liquid, it is possible to make certain that the liquid is kept in place by surface tension effects, that is to say because of its own surface tension and the surface tension properties of the lining faces touched by it.
The damping unit may take the form of two, more specially frusto-conical plates, able to be moved in relation to each other and of which one may undergo adjustment by using a threaded rod and a lock nut. Furthermore, as a further development of the invention, the damping liquid may be kept in an open-sided but otherwise pot-like space between an U-shaped female part and a male part, able to be moved vibratingly within it.
As a still further development, the female part has a through-hole and the male part is placed within it. A larger or smaller amount of the damping liquid may then be forced by a piston into the space between the male and female parts.
REFERENCES:
patent: 2963259 (1960-12-01), Heyer
patent: 3134585 (1964-05-01), Trask
patent: 3141523 (1964-07-01), Dickie
patent: 3441053 (1969-04-01), Robinson
patent: 3638767 (1972-02-01), Elsner
Cohan Alan
Samson Aktiengesellschaft
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