Valves and valve actuation – Tube compressors – Fluid pressure actuated
Patent
1993-08-24
1994-04-26
Fox, John C.
Valves and valve actuation
Tube compressors
Fluid pressure actuated
251 29, F16K 700
Patent
active
053059832
ABSTRACT:
The instant invention relates to a spinning device, in particular a spinning or winding device. The device comprises a pressure circuit with a valve installed therein to control the pressure. The valve can be actuated pneumatically. A device for rapid aeration of the valve is provided with the valve. The valve is actuated by compressed air acting upon a side of a cup seal away from a pressure chamber, causing the cup seal to close off an aeration opening. The compressed air streams past the cup seal and fills the pressure chamber, whereby a passage cross-section of the valve is reduced or closed off by means of a closing element acting upon the pressure in the pressure chamber in opposition to a restoring force. As the pressure on the side of the cup seal away from the pressure chamber is reduced, the pressure on the side of the cup seal towards the pressure chamber is increased. As a result the cup seal moves in direction of lower pressure and the aeration opening is again opened. The closing element returns in this manner rapidly into its original position under the effect of its restoring force.
REFERENCES:
patent: 2786642 (1957-03-01), Long
patent: 3145967 (1964-08-01), Gardner
patent: 3936028 (1976-02-01), Norton et al.
patent: 3984080 (1976-10-01), Varis et al.
patent: 4442954 (1984-04-01), Bergandy
patent: 4642833 (1987-02-01), Stoltz et al.
patent: 4893462 (1990-01-01), Braun et al.
Haase Manfred
Schneider Gottfried
Fox John C.
Rieter Ingolstadt Spinnereimaschinenbau AG
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