Patent ID: 8596992
Filing Date: 2013-12-03
Classification: F04B

Abstract:
1. A pump arrangement comprising: a rotary shaft having a first end, a second end, and a central region therebetween; a rotary drive arrangement coupled to said central region of said rotary shaft for applying rotary energy thereto; first, second, third, and fourth connector rods coupled to said rotary shaft, each for converting the rotary energy of said rotary drive arrangement to linear motion along a respectively associated one of first, second, third, and fourth axes of motion, each such axis of motion being orthogonal to said rotary shaft; first, second, third, and fourth pump arrangements coupled to respectively associated ones of said first, second, third, and fourth connector rods, each of said first, second, third, and fourth pump arrangements pumping a pulse of air during each rotation of said rotary shaft, said first, second, third, and fourth pump arrangements pumping the corresponding pulse of air sequentially during each rotation of said rotary shaft; a first eccentric coupler arrangement for coupling said first and third connector rods to said first end of said rotary shaft, said first eccentric coupler arrangement having first and second eccentric portions angularly displaced with respect to one another for engaging with said first and third connector rods, respectively; and a second eccentric coupler arrangement for coupling said second and fourth connector rods to said second end of said rotary shaft, said first and second eccentric coupler arrangements being angularly displaced on said rotary shaft with respect to each other, said second eccentric coupler arrangement having third and fourth eccentric portions angularly displaced with respect to one another for engaging with said second and fourth connector rods, respectively.