Patent ID: 6270327
Filing Date: 2001-08-07
Classification: F04B

Abstract:
A pneumatic hand pump capable of providing a relatively large volume of air during a single stroke for inflating an All Terrain Vehicle tire, comprising:a cylindrical, tubular pump housing having a diameter of about two inches, a longitudinal axis with a length of about ten inches, and a base at one end of the pump housing;a piston sized to reciprocate along the axis;a seal interposed between the piston and the housing to seal the piston against the housing and to form a variable volume chamber to compress air in the chamber as the piston moves toward the base;a plunger having a distal end comprising a piston, said plunger and piston adapted to slidably reciprocate in the pump housing, the plunger being slightly less than 2 inches in diameter and slightly less than 10 inches in length to create a storage space therein; anda coiled flexible hose having a front end connected to the piston inside the housing and placed in fluid communication with the variable volume chamber, the hose having an opposing second end placeable outside the housing, the hose being coiled to fit entirely within the plunger when in a stored configuration, said hose having sufficient physical memory that it recoils inside the plunger after use.