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    • 5. 发明专利
    • SELF-CLEANING RAW MATERIAL FEEDER
    • JPH07324294A
    • 1995-12-12
    • JP19239491
    • 1991-08-01
    • INGERSOLL RAND CO
    • IAN JIEI EICHI KURAAKUUPAUNDAAEDOWAADO ERU FUARAA
    • D21D1/40D21F1/02D21F1/74
    • PURPOSE: To provide a self-cleaning feed apparatus where the defect of a conventional apparatus is removed by enabling clumps to be cleared in operation. CONSTITUTION: This self-cleaning feed apparatus is equipped with a slender chamber 9 having a slice outlet for imparting the regulated flow of fibrous feedstock slurry virtually free from clumps of fiber and a means installed at the inlet port of the slice outlet and controlling the flow of the feedstock in a range from the minimum quantity of flow to the maximum one. When located at a first position, the controlling means forms a throat part permitting a preferred quantity of the feedstock to flow. When located at a second position, the means shuts the flow passing through the outlet and facilitates the flow passing through the chamber 9 along its length to clear the clumps of fiber in the chamber. The means comprises a rotatable half round aperture bar slice 3A which can rotate in a range from a partially open position to a completely open position or a completely shut position where the clumps are broken down. In this way, it is possible to set the outlet velocity to a desired level so as for the formation of a mat to be optimized and also to prevent crumps from being formed.
    • 6. 发明专利
    • PUSH BUTTON TYPE REVERSING VALVE FOR POWER TOOL
    • JPH0775977A
    • 1995-03-20
    • JP1454993
    • 1993-02-01
    • INGERSOLL RAND CO
    • ROBAATO II GEIJIYAA
    • B25F5/00F16K31/54
    • PURPOSE: To minimize pressure loss in a reverse rotation valve circuit by providing a rotatable spool disposed in a circular passage with a means to receive air at one end and selectively distribute air to one of plural passages disposed adjacent to the other end. CONSTITUTION: A power tool 1 bas a handle having an air inlet 3 to give priming fluid to an air motor 13, and it is provided with a tilt valve 5 operated by a trigger 6 for feeding pressure fluid into a chamber 9. In the chamber 9, a rotary spool 10 is disposed as a reverse rotation valve means to selectively distribute the pressure fluid to a normal direction port 20 or a reverse rotation port. Air passing from an air passage 4 in the chamber 9 through the spool 10 is directed to either of two passages by actuation of the spool 10. The rotary spool 10 has plural pinion teeth in an outer circumference roughly at a middle part of it, and rack teeth of a normal direction pushbutton 30 and a reverse direction pushbutton 25 are engaged with these to control its rotation.