Patent ID: 8109745
Filing Date: 2012-02-07
Classification: F04B,Y10T

Abstract:
1. A floor pump comprising: a base; a cylinder assembly including an outer cylinder having a first end and a second end and an inner cylinder disposed in the outer cylinder and having a first end and a second end, with a cross-sectional area of the first end of the outer cylinder being larger than the first end of the outer cylinder; wherein the second end of the outer cylinder is coupled onto the base means; wherein the first end of the inner cylinder is coupled onto the base; a linkage assembly partially disposed in the inner cylinder and communicating with the base, with the linkage assembly including a piston reciprocatingly driven to move in the inner cylinder; and a hose having a first end coupled to the base and communicating with the linkage assembly, and a second end configured to be coupled to a thing desired to be inflated.