Screen for comminuting machines
Patent 4982904 Issued on January 8, 1991. Estimated Expiration Date: 
January 18, 2009. 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.
January 18, 2009. 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 1523614 1634026 2440927 InventorAssigneeApplicationNo. 298568 filed on 01/18/1989US Classes:241/73, Arcuate screen concentric with rotary comminuting member241/189.1Rotary striking member with circumferential or tangential flowExaminersPrimary: Rosenbaum, MarkAttorney, Agent or FirmForeign Patent References
International ClassB02C 013/286Foreign Application Priority Data1986-07-23 DEAbstractA comminuting machine for comminuting waste, recyclable material, ores, stones, coal and the like, includes a rotor carrying comminuting tools and mounted for rotation about a horizontal axis in a housing. The housing has an inlet and at least one outlet region for discharging comminuted material. First and second layers are mounted for independent movement to the housing over the outlet region. One layer is provided with a grate for the passage of comminuted material. The other layer is provided with a plurality of punches which are insertable into openings through the grate for modifying or closing the openings.Field of SearchRemovable or interchangeable screen or screen portionStationary concave surface Hinged or dumping type screen or support Screen or screen elements move during comminution Three or more serially acting alternate perforate and imperforate surfaces Arcuate screen concentric with rotary comminuting member Spaced parallel bars (e.g., "grate") With means to change or adjust comminuting position of screen or screen element Annular screen above or surrounding comminuting zone | |
