Feeding of fibrous material to carding machines
Patent 4085977 Issued on April 25, 1978. Estimated Expiration Date: 
April 25, 1995. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 25, 1995. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3414330 3552800 InventorAssigneeApplicationNo. 829953 filed on 09/01/1977US Classes:406/156, Feeding plural receptacles19/105, Feeding406/183Movable valve in conduitExaminersPrimary: Love, John J.Assistant: Nase, Jeffrey V. Attorney, Agent or FirmInternational ClassB65G 053/06Foreign Application Priority Data1970-02-12 UKAbstractA method of, and apparatus for, feeding fibrous material to the chute from which a carding machine is fed, wherein fibrous material is entrained in a flow of moving air downstream of the flow generation point, and the flow of air and entrained material is led along a duct to the chute. Desirably, the air flow is not more than 300 cubic feet per minute and is generated by a positive displacement blower.Additionally, a pivotable valve flap is provided wherein the pivoting means are shielded from the movement of material in the ducts to prevent the formation of trailings on said pivot means. | |
