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US 5,992,472 AGranted
Pneumatic valve device for a thread-feeding machine and a thread-feeding machine
AssigneeIro AB
InventorAdriano Maroino
Life of this patent
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AssigneeIro AB
InventorAdriano Maroino
Estimating the term…
A pneumatic valve device for a yarn feeding device includes a housing, at least two valves in flow channels leading to a plurality of consumers, and first and second valve openers. The first valve opener establishes a connection with at least one consumer, whereas the second valve opener can establish a connection with all of the consumers. Flow channels are provided which are separated from one another and lead to the at least one consumer and to the remaining consumers, and a unilaterally operating drag coupling is also provided between the second valve opener and the valve that is actuated by the first valve opener. The actuating movement of the second valve opener is also transferable to the valve by means of the unilaterally operating drag coupling. In the yarn feeding device, a first threading nozzle or the first and at least a second threading nozzle are selectively pressurized by means of the valve device, optionally together with a pneumatic piston-cylinder unit.
In a pneumatic valve device for a yarn feeding device, comprising a housing which contains a chamber that is connectable to a source of pressure, at least two valves arranged between said chamber and flow channels leading to a plurality of consumers, first and second valve openers which are each manually actuable and assigned to at least one of said valves, and actuating connections between each said valve opener and the at least one valve assigned thereto, the first valve opener establishing a connection from the chamber with at least one of said consumers, whereas the second valve opener can establish a connection from said chamber with all of said consumers, comprising the improvement wherein flow channels are provided which are separated from each other, said flow channels leading respectively from said chamber to the at least one consumer and to the remaining consumers, at least one of said valves being solely actuable by means of said first valve opener, and a unilaterally operating drag coupling being provided between said second valve opener and said valve which is solely actuable by means of said first valve opener, an actuating movement of said second valve opener being transmittable by means of said drag coupling also to said valve which is normally actuable by means of said first valve opener.
A yarn feeding device comprising a motor housing having supported therein a rotatingly drivable hollow shaft which carries a winding element, a storage body which is rotatably supported on said hollow shaft and secured against rotation therewith, an extension arm which is secured to said motor housing and extends along said storage body, at least two yarn threading nozzles of which at least a first one is arranged in front of the yarn feed end of said hollow shaft and at least a second one is arranged on said extension arm, and a pneumatic valve device which is actuable by a source of pressure and is used for selectively actuating the at least one first threading nozzle or all of said threading nozzles, said pneumatic valve device comprising a housing and first and second valve openers that are manually actuable for opening valves via actuating connections, wherein flow channels are provided which are separated from each other, said flow channels leading to said at least one first threading nozzle and to said at least one second threading nozzle, said flow channels being provided in said housing of said valve device, said second valve opener and said valve which is actuable by means of said first valve opener having a unilaterally operative drag coupling arranged therebetween for transmitting the actuating movement of said second valve opener also to said valve which is normally actuable by means of said first valve opener.
Dependencies are inferred from the claim text.