Patent ID: 6558130
Filing Date: 2003-05-06
Classification: F04B

Abstract:
A two-way manually operated pump structure comprised of:A pump body having a handle at its exterior side that provides for manual gripping support, a piston chamber disposed lengthwise, the interior of the said piston chamber providing for the longitudinal excursion of a piston, a piston connecting rod at the center axial end of and, furthermore, coupled to the said piston, with the far extremity of the said piston connecting rod extending through the said piston chamber exposed at its outer side; A nozzle mount conjoined in an air-tight seal to the front end opening of the said piston chamber consisting of an intake passage and an exhaust passage formed lengthwise and, furthermore, independently in continuity with the said piston chamber, a unidirectional valve situated in a passage opening at the juncture of the said intake passage and the said piston chamber that limits the admittance of air in the said piston chamber through the said intake passage to a single direction, a unidirectional valve situated in a passage opening at the juncture of the said exhaust passage and the said piston chamber that limits the admittance of air in the said piston chamber through the said exhaust passage to a single direction; furthermore, a pressure gauge is radially disposed in the upper side of the said nozzle mount and a nozzle projects lengthwise from its anterior extremity; the said nozzle consists of a vent tube that is in continuity lengthwise with internal pressure of the said pressure gauge and a vent hole is radially and recessively formed through the interior section of the said vent tube; A drive mechanism consisting of a bracing fixture, a push handle, an elastic component, and a collapsible sleeve, of which the said bracing fixture is situated at an angle on the said pump body such that the outer diameter of the said handle at the opposite side is aligned with it and, furthermore, a pivot hole is formed in its lengthwise extremity; the said push handle has a top end equipped with a pin that is hinged to the said pivot hole, wherein a joint section disposed in the lateral portion has a pin for linkage and fastening to the said connecting rod extremity to enable the driving and control over the forward and rearward excursion of the said piston; the said elastic component is installed lengthwise over the outer diameter of the said piston connecting rod exposed at the outer surface of the said pump body and provides the rebound force for the longitudinal movement of the said piston; and the said collapsible sleeve is slipped lengthwise over the outer diameter of the said elastic component to provide for the protection of this area; A control ring mount that provides for tight rotational conjoinment to the end surface of the said nozzle mount and has an axial hole at the center of its lengthwise end that is, furthermore, aligned with the outer diameter of the said nozzle, a circular slot recessively formed in alignment with the said vent hole position of the said nozzle and the internal diameter of the said axial hole, and an intake port and an exhaust port recessively formed proximal to the said nozzle mount at the lateral extremity of the said control ring mount end surface that are respectively aligned with its said intake passage and said exhaust passage end positions, wherein the opposite end of the said intake port extends to the outer diameter and upper side of the said control ring mount such that it is in continuity with external air, while the opposite end of the said exhaust port is in continuity with the said circular slot such that air flows confluently within the said nozzle vent tube and the said circular slot; Given the said assembly, the angular rotation and adjustment operation of the said control ring mount shifts the positions of the said intake port and the said exhaust port in its end surface aligned in an air-tight confluence with the said intake passage and the said exhaust passage formed lengthwise in the said nozzle mount and changes the air admittance passage flow pattern orientation appropriate for the inflation or deflation.