Patent ID: 9169836
Filing Date: 2015-10-27
Classification: F04B

Abstract:
1. A simplified inflation valve, comprising a base, a polyurethane membrane, and a squeezer, the improvements comprising: the base being a disk-like member having a top surface on which a tubular seat is formed centrally, the tubular seat forming therein a bore extending therethrough to a bottom surface of the base; the polyurethane membrane being arranged at a bottom of the bore and comprising at least one aperture formed in the membrane at a location corresponding to an outer circumferential portion of the bore of the base, the membrane having an outer circumference that is fixed to the bottom surface of the base through ultrasonic technique or die pressing so as to cover the bore, wherein the aperture is set at a location engageable with and closable by the bottom surface of the base in a closed position where air is blocked from passing through the aperture and wherein the polyurethane membrane is deflectable to disengage from the bottom surface of the base to open the aperture in an open position where air is allowed to pass through the aperture; and the squeezer being mounted on the base and having elasticity for elastically resuming shape after being pressed and having an interior space forming an air chamber, the air chamber having a top forming at least one through hole, the squeezer having a bottom comprising an outer circumferential portion forming a sealing rim, which is fixed, through ultrasonic technique or die pressing, to the base so as to form an inflation valve.