Axial flow fluid compressor with angled blade
Patent 4872820 Issued on October 10, 1989. Estimated Expiration Date: 
December 7, 2008. 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.
December 7, 2008. 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 1295068 2401189 3719436 InventorsApplicationNo. 280880 filed on 12/07/1988US Classes:418/220, HELICAL WORKING MEMBER417/356, Pump within armature418/164Rotary internal reacting memberExaminersPrimary: Croyle, Carlton R.Assistant: Scheuermann, D. Attorney, Agent or FirmForeign Patent References
International ClassF04B 039/00Foreign Application Priority Data1988-01-05 JPAbstractA compressor includes a cylinder, and a rotary rod arranged in the cylinder. A spiral groove is formed on the outer periphery of the rotary rod. The spiral groove is formed such that its depth direction extending from the bottom of the groove to the opening thereof is inclined at a predetermined angle toward a discharge side of the cylinder with respect to the axis of the rotary rod. Pitches of the spiral groove are gradually narrowed with distance from the suction-side end of the cylinder. A spiral blade is fitted in the spiral groove to be slidable in the depth direction. The blade divides a space between the outer periphery of the rotary rod and the inner surface of the cylinder into a plurality of working chambers. When the cylinder and rotary rod are relatively rotated, a fluid, introduced into the suction-side end of the cylinder, is transported toward the discharge-side end of the cylinder through the working chambers. | |
