Inflator with inflation and deflation effects

Abstract

An inflator with inflation and deflation effects. The inflator includes: a cylinder body in which a piston is fitted for compressing the gas in a compression room formed in the cylinder body between the piston and the front end of the cylinder body; a piston rod having an internal gas passage, a front end of the piston rod extending through a rear end of the cylinder body into the cylinder body to connect with the piston, a front end of the gas passage communicating with the compression room; a handle connected with a rear end of the piston rod; a gas passage connector located at the cylinder body end of the inflator; a rear end of the gas passage communicating with outer side through the gas passage connector; a cylinder body connector located at the handle end of the inflator; the compression room communicating with the outer side through the cylinder body connector; a first one-way valve only permitting the gas to one-way flow between the compression room and outer side; a second one-way valve only permitting the gas to one-way flow between outer side, the gas passage and the compression room. Along the longitude of the inflator, the two one-way valves only permit the gas to one-way flow in the same direction. When inflating an object, the object is connected with one of the two connectors; when deflating the object, the object is connected with the other connector.

1 . An inflator with inflation and deflation effects, comprising: 
 at least one cylinder body;    at least one piston fitted in the cylinder body and airtight engaged with inner wall face of the cylinder body, at least one compression room being formed in the cylinder body between the piston and a front end of the cylinder body;    a piston rod having an internal gas passage, a front end of the piston rod extending through a rear end of the cylinder body into the cylinder body to connect with the piston for driving the piston, a front end of the gas passage communicating with the compression room;    a handle fixedly connected with a rear end of the piston rod for a user to hold;    a gas passage connector disposed at the handle end of the inflator, a rear end of the gas passage via the gas passage connector communicating with outer side;    a cylinder body connector disposed at the cylinder body end of the inflator, the compression room via the cylinder body connector communicating with outer side;    an exhaust one-way valve disposed between the cylinder body connector and the compression room, the exhaust one-way valve only permitting the gas in the compression room to flow from the compression room to outer side; and    an intake one-way valve disposed between the gas passage connector and the gas passage, the intake one-way valve only permitting external atmosphere to one-way flow from the gas passage into the compression room.    
   
   
       2 . The inflator as claimed in  claim 1 , wherein the intake one-way valve is disposed in the piston to communicate the compression room with the front end of the gas passage.  
   
   
       3 . The inflator as claimed in  claim 1 , wherein the intake one-way valve is disposed in the gas passage.  
   
   
       4 . The inflator as claimed in  claim 1 , wherein the intake one-way valve is disposed in the handle between a rear end of the piston rod and the gas passage connector.  
   
   
       5 . The inflator as claimed in  claim 1 , further comprising a gas valve mechanism having a valve nozzle, the gas valve mechanism being connected with a front end of the cylinder body and communicating with the compression room, the valve nozzle serving as the cylinder body connector.  
   
   
       6 . The inflator as claimed in  claim 5 , wherein the gas valve mechanism is fixedly connected with the cylinder body, a conducting hole being formed in the cylinder body, the compression room communicating with the gas valve mechanism through the conducting hole.  
   
   
       7 . The inflator as claimed in  claim 5 , wherein a slide way is disposed in a front end of the cylinder body, a rear end of the slide way communicating with the compression room, a front end of a conduit being connected with the gas valve mechanism, the conduit communicating with the gas valve mechanism, a rear end of the conduit airtight extending through the front end of the cylinder body into the slide way, the conduit being slidable within the slide way.  
   
   
       8 . The inflator as claimed in  claim 7 , further comprising an airtight member disposed at a rear end of the conduit, the airtight member being airtight engaged with inner face of a wall of the slide way.  
   
   
       9 . The inflator as claimed in  claim 7 , wherein the slide way communicates with the compression room through a through hole, the exhaust one-way valve being disposed in the through hole.  
   
   
       10 . An inflator with inflation and deflation effects, comprising: 
 at least one cylinder body;    at least one piston fitted in the cylinder body and airtight engaged with inner wall face of the cylinder body, at least one compression room being formed in the cylinder body between the piston and a front end of the cylinder body;    a piston rod having an internal gas passage, a front end of the piston rod extending through a rear end of the cylinder body into the cylinder body to connect with the piston for driving the piston, a front end of the gas passage communicating with the compression room;    a handle fixedly connected with a rear end of the piston rod for a user to hold;    a gas passage connector disposed at the handle end of the inflator, a rear end of the gas passage via the gas passage connector communicating with outer side;    a cylinder body connector disposed at the cylinder body end of the inflator, the compression room via the cylinder body connector communicating with outer side;    an intake one-way valve disposed between the cylinder body connector and the compression room, the intake one-way valve only permitting external gas to flow from the cylinder body connector into the compression room; and    an exhaust one-way valve disposed between the gas passage connector and the gas passage, the exhaust one-way valve only permitting the gas in the compression room to flow from the compression room into the gas passage and then flow to outer side.    
   
   
       11 . The inflator as claimed in  claim 10 , wherein the exhaust one-way valve is disposed in the piston to communicate the compression room with the front end of the gas passage.  
   
   
       12 . The inflator as claimed in  claim 10 , wherein the exhaust one-way valve is disposed in the gas passage.  
   
   
       13 . The inflator as claimed in  claim 10 , wherein the exhaust one-way valve is disposed in the handle between a rear end of the piston rod and the gas passage connector.  
   
   
       14 . The inflator as claimed in  claim 10 , further comprising a gas valve mechanism having a valve nozzle, the gas valve mechanism being connected with a rear end of the handle and communicating with the gas passage, the valve nozzle serving as the gas passage connector.  
   
   
       15 . The inflator as claimed in  claim 14 , wherein the gas valve mechanism is fixedly connected with the handle, a conducting hole being formed in the handle, the gas passage communicating with the gas valve mechanism through the conducting hole.  
   
   
       16 . The inflator as claimed in  claim 14 , wherein a slide way is disposed in a rear end of the handle, a front end of the slide way communicating with the gas passage, a rear end of a conduit being connected with the gas valve mechanism, the conduit communicating with the gas valve mechanism, a front end of the conduit airtight extending through the rear end of the handle into the slide way, the conduit being slidable within the slide way.  
   
   
       17 . The inflator as claimed in  claim 16 , further comprising an airtight member disposed at a front end of the conduit, the airtight member being airtight engaged with inner face of a wall of the slide way.  
   
   
       18 . The inflator as claimed in  claim 1 , comprising a main cylinder body, a subsidiary cylinder body, a main piston and a subsidiary piston, the subsidiary cylinder body extending into the main cylinder body from a rear end of the main cylinder body, the main piston being disposed at a front end of the subsidiary cylinder body and airtight fitted in the main cylinder body, a main compression room being formed in the main cylinder body between front end of the main cylinder body and the main piston, a front end of the piston rod extending through a rear end of the subsidiary cylinder body into the subsidiary cylinder, the subsidiary piston being disposed at a front end of the piston rod and airtight fitted in the subsidiary cylinder body, a subsidiary compression room being formed in the subsidiary cylinder body between front end of the subsidiary cylinder body and the subsidiary piston, the subsidiary compression room communicating with the main compression room, the cylinder body connector being disposed at one end of the main cylinder body, the exhaust one-way valve being disposed between the cylinder body connector and the main compression room.  
   
   
       19 . The inflator as claimed in  claim 18 , wherein said intake one-way valve is disposed in the subsidiary piston.  
   
   
       20 . The inflator as claimed in  claim 18 , wherein said intake one-way valve is disposed in the gas passage.  
   
   
       21 . The inflator as claimed in  claim 18 , further comprising a second intake one-way valve disposed in the main piston, the second intake one-way valve only permitting the gas to flow from the subsidiary compression room to the main compression room.  
   
   
       22 . The inflator as claimed in  claim 18 , further comprising a gas valve mechanism having a valve nozzle, the gas valve mechanism being connected with a front end of the main cylinder body and communicating with the main compression room, the valve nozzle serving as the cylinder body connector.  
   
   
       23 . The inflator as claimed in  claim 10 , comprising a main cylinder body, a subsidiary cylinder body, a main piston and a subsidiary piston, the subsidiary cylinder body extending through a rear end of the main cylinder body into the main cylinder body, the main piston being disposed at a front end of the subsidiary cylinder body and airtight fitted in the main cylinder body, a main compression room being formed in the main cylinder body between front end of the main cylinder body and the main piston, a front end of the piston rod extending through a rear end of the subsidiary cylinder body into the subsidiary cylinder, the subsidiary piston being disposed at a front end of the piston rod and airtight fitted in the subsidiary cylinder body, a subsidiary compression room being formed in the subsidiary cylinder body between front end of the subsidiary cylinder body and the subsidiary piston, the subsidiary compression room communicating with the main compression room, the cylinder body connector being disposed at one end of the main cylinder body, the intake one-way valve being disposed between the cylinder body connector and the main compression room.  
   
   
       24 . The inflator as claimed in  claim 23 , wherein said exhaust one-way valve is disposed in the subsidiary piston.  
   
   
       25 . The inflator as claimed in  claim 23 , wherein said exhaust one-way valve is disposed in the gas passage.  
   
   
       26 . The inflator as claimed in  claim 23 , further comprising a second exhaust one-way valve disposed in the main piston, the second exhaust one-way valve only permitting the gas to flow from the main compression room to the subsidiary compression room.  
   
   
       27 . The inflator as claimed in  claim 23 , further comprising a gas valve mechanism having a valve nozzle, the gas valve mechanism being connected with a rear end of the handle and communicating with the gas passage, the valve nozzle serving as the gas passage connector.  
   
   
       28 . An inflator with inflation and deflation effects, comprising: 
 at least one cylinder body;    at least one piston fitted in the cylinder body, at least one compression room being formed in the cylinder body between the piston and a front end of the cylinder body;    a piston rod having an internal gas passage, a front end of the piston rod extending through a rear end of the cylinder body into the cylinder body to connect with the piston for driving the piston, a front end of the gas passage communicating with the compression room;    a handle fixedly connected with a rear end of the piston rod for a user to hold;    a cylinder body connector disposed at the cylinder body end of the inflator, the compression room via the cylinder body connector communicating with outer side, a first gas flow way being formed between the outer side and the compression room;    a gas passage connector disposed at the handle end of the inflator, the rear end of the gas passage via the gas passage connector communicating with outer side, a second gas flow way being formed between the compression room, the gas passage and the outer side;    a first one-way valve disposed in the first gas flow way, whereby the gas in the first gas way can only one-way flow; and    a second one-way valve disposed in the second gas flow way, whereby the gas in the second gas way can only one-way flow, along the longitude of the inflator, the two one-way valves only permitting the gas to one-way flow within the two gas flow ways in the same direction.    
   
   
       29 . The inflator as claimed in  claim 28 , wherein the first one-way valve only permits external gas to one-way flow into the compression room and the second one-way valve only permits the gas in the compression room to one-way flow to outer side.  
   
   
       30 . The inflator as claimed in  claim 29 , wherein the cylinder body connector is disposed on the cylinder body and communicates with the compression room, the first one-way valve being disposed between the compression room and the cylinder body connector, the gas passage connector being disposed on the handle and communicating with the rear end of the gas passage, the second one-way valve being disposed between the gas passage and the gas passage connector.  
   
   
       31 . The inflator as claimed in  claim 29 , further comprising a gas valve mechanism having a valve nozzle, the gas valve mechanism being connected with the handle and communicating with the gas passage, the valve nozzle serving as the gas passage connector.  
   
   
       32 . The inflator as claimed in  claim 28 , wherein the first one-way valve only permits the gas in the compression room to one-way flow to the outer side and the second one-way valve only permits the external gas to one-way flow into the gas passage and the compression room.  
   
   
       33 . The inflator as claimed in  claim 32 , wherein the cylinder body connector is disposed on the cylinder body and communicates with the compression room, the first one-way valve being disposed between the compression room and the cylinder body connector, the gas passage connector being disposed on the handle and communicating with the gas passage, the second one-way valve being disposed between the gas passage and the gas passage connector.  
   
   
       34 . The inflator as claimed in  claim 32 , further comprising a gas valve mechanism having a valve nozzle, the gas valve mechanism being connected with the cylinder body and communicating with the compression room, the valve nozzle serving as the cylinder body connector.