Method for preparing fibers for mixing into a sprayed concrete mass and a device for performing the method
Patent 4092737 Issued on May 30, 1978. Estimated Expiration Date: 
May 30, 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.
May 30, 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 ReferencesInventorApplicationNo. 710702 filed on 08/02/1976US Classes:366/3, Gas incorporating; fluid mixing, delivering, or conveying366/8, By ingredient proportioning366/10, With gas incorporating; fluid mixing, delivering, or conveying366/19, By volume366/31By vibrationExaminersPrimary: Jenkins, Robert W.Attorney, Agent or FirmInternational ClassesB28C 005/20B28C 005/40 B28C 005/46 Foreign Application Priority Data1975-08-11 SWAbstractThe invention provides a method and apparatus for preparing precut steel fibers initially packed in bundles or occurring as closely packed lumps for mixing with concrete as a sprayed mass, the method comprising the steps of tumbling the bundles or lumps of fibers, dropping quantities of the fibers onto an inclined plane, subjecting the fibers to an air stream to cause said fibers to become parallel to each other, and mixing the fibers with a mass of concrete in the air stream. | |
