Rotary piston for a roots blower
First Claim
1. A ROTARY PISTON FOR A ROOTS BLOWER WHICH ROTATES TOGETHER WITH ANOTHER PISTON OF THE SAME SHAPE AT THE SAME SPEES, WHICH COMPRISES TWO SUBSTANTIALLY IDENTICAL PISTON SECTIONS AND AN INTERMEDIATE SECTION INTERPOSED BETWEEN AND CONNECTED TO SAID PISTON SECTIONS, THE CROSS SECTIONAL CONTOUR OF EACH OF SAID TWO PISTON SECTIONS BEING DEFINED SOLELY BY TWO UNMODIFIED CIRCLES HAVING THEIR CENTER POINTS LOCATED ON THE LONGITUDINAL AXIS OF SYMMETRY OF SAID ROTARY PISTON, THE CONTOUR OF SAID INTERMEDIATE SECTION BEING DEFINED SOLELY BY A CIRCLE HAVING ITS CENTER AT THE POINT OF INTERSECTION OF THE AXES OF SYMMETRY OF SAID ROTARY PISTON, THE DEVIATION OF SAID THUS DEFINED CONTOUR OF SAID PISTON SECTIONS FROM THE IDEAL TOOTH CURVE BEING WITHIN THE TOLERANCE OF 0.0015 OF THE DIAMETER OF THE ROTARY PISTON.
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Accused Products
4 Citations
1 Claim
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1. A ROTARY PISTON FOR A ROOTS BLOWER WHICH ROTATES TOGETHER WITH ANOTHER PISTON OF THE SAME SHAPE AT THE SAME SPEES, WHICH COMPRISES TWO SUBSTANTIALLY IDENTICAL PISTON SECTIONS AND AN INTERMEDIATE SECTION INTERPOSED BETWEEN AND CONNECTED TO SAID PISTON SECTIONS, THE CROSS SECTIONAL CONTOUR OF EACH OF SAID TWO PISTON SECTIONS BEING DEFINED SOLELY BY TWO UNMODIFIED CIRCLES HAVING THEIR CENTER POINTS LOCATED ON THE LONGITUDINAL AXIS OF SYMMETRY OF SAID ROTARY PISTON, THE CONTOUR OF SAID INTERMEDIATE SECTION BEING DEFINED SOLELY BY A CIRCLE HAVING ITS CENTER AT THE POINT OF INTERSECTION OF THE AXES OF SYMMETRY OF SAID ROTARY PISTON, THE DEVIATION OF SAID THUS DEFINED CONTOUR OF SAID PISTON SECTIONS FROM THE IDEAL TOOTH CURVE BEING WITHIN THE TOLERANCE OF 0.0015 OF THE DIAMETER OF THE ROTARY PISTON.
Specification