Hand-operated inflator
OwnerYing-Che Huanginventor
Life of this patent
Estimating the term…
Abstract
A hand-operated inflator with dual cylinder is provided. Once the cylinders are pulled out on two sides of the central block to form a line axially, and a clamp plate at mid point in between the two cylinders is turned to the transversal position to lock the cylinders in place, the inflator is set for refilling operation. The two cylinders can be folded back when the clamp plate is released, making it easy for carrying and storage with the length reduced by half. The inflator is able to inflate an object with faster rate as compared with the conventional inflators with only one air cylinder. Moreover, the central block can be attached with a pressure meter. If the measured air pressure inside the object gets excessively high, air can be safely released through an over pressure valve.
Claims17
A hand-operated inflator comprising:
- a central block which has two longitudinal through holes extending from top to bottom surface to receive two screws inserted from the top and two pivot pins inserted from the bottom, one relief hole on one side to receive an over pressure valve, sealing one end of the transversal through hole that communicates with two longitudinal conduits inside the pivot pins, and a central outlet on back surface of the central block to attach a discharge tube with nozzle on the other end, another hole on the lower portion of the back side to rotatably receive a clamp plate, and a hole on the front surface to receive a pressure meter;
- and
- two pivot pins each of which has a longitudinal conduit running through the hollow core, a first circular band recess around the neck and a second circular band recess around the open end, wherein the first circular band recess is provided with a first hole on the bottom surface, and the second circular band recess with a second hole on the bottom surface, both of which communicate with each other through the longitudinal conduit inside the pivot pins, and each circular band recess is blocked by a pair of O-rings;
- wherein the pivot pins are respectively inserted through bottom holes of the cylinders, so that the position of the first circular band recess corresponds to the central hole of the cylindrical body, and the second circular band recess corresponds to the transversal through hole of the central block.
Dependencies are inferred from the claim text.