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 rear end of the gas passage communicating with outer side; a first one-way valve disposed at a front end of the cylinder body and 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.

1 . An inflator with inflation and deflation effects, comprising: 
 a cylinder body;    a piston fitted in the cylinder body and airtight engaged with inner wall of the cylinder body, a 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 connected with a rear end of the piston rod for a user to hold, a rear end of the gas passage keeping communicating with outer side;    an exhaust one-way valve disposed at front end of the cylinder body, the exhaust one-way valve only permitting the gas in the compression room to flow from the compression room to outer side;    an intake one-way valve positioned in a certain position, the intake one-way valve only permitting ambient atmosphere to one-way flow through the gas passage into the compression room;    a gas passage connector located at circumference of the handle to communicate with a rear end of the gas passage; and    a cylinder body connector disposed at the front end of the cylinder body to communicate with a front end of the exhaust one-way valve.    
   
   
       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 , wherein the gas passage connector is disposed in the handle and exposed at the circumference of the handle.  
   
   
       6 . The inflator as claimed in  claim 1 , wherein a rear end of the piston rod extends to a rear end of the handle and the gas passage connector is disposed in the rear end of the piston rod.  
   
   
       7 . An inflator with inflation and deflation effects, comprising: 
 a cylinder body;    a piston fitted in the cylinder body and airtight engaged with inner wall face of the cylinder body, a 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 connected with a rear end of the piston rod for a user to hold, a rear end of the gas passage keeping communicating with outer side;    an intake one-way valve disposed at front end of the cylinder body, only permitting the gas to flow from outer side into the compression room;    an exhaust one-way valve positioned in a certain position, 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 from the rear end of the gas passage to outer side;    a gas passage connector located at circumference of the handle to communicate with a rear end of the gas passage; and    a cylinder body connector disposed at the front end of the cylinder body to communicate with a front end of the intake one-way valve.    
   
   
       8 . The inflator as claimed in  claim 7 , wherein the exhaust one-way valve is disposed in the piston to communicate the compression room with the front end of the gas passage.  
   
   
       9 . The inflator as claimed in  claim 7 , wherein the exhaust one-way valve is disposed in the gas passage.  
   
   
       10 . The inflator as claimed in  claim 7 , wherein the exhaust one-way valve is disposed in the handle between a rear end of the piston rod and the gas passage connector.  
   
   
       11 . An inflator with inflation and deflation effects, comprising: 
 a main cylinder body;    a subsidiary cylinder body;    a main piston disposed at a front end of the subsidiary cylinder body, the subsidiary cylinder body extending through rear end of the main cylinder body into the main cylinder body, the main piston being 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 subsidiary piston 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;    a piston rod having an internal gas passage, a front end of the piston rod extending through rear end of the subsidiary cylinder body into the subsidiary cylinder body to connect with the subsidiary piston, a front end of the gas passage communicating with the subsidiary compression room;    a handle connected with a rear end of the piston rod, a rear end of the gas passage keeping communicating with outer side;    an exhaust one-way valve disposed at front end of the cylinder body, only permitting the gas to flow from the main compression room to outer side;    a first intake one-way valve disposed in a certain position, the first intake one-way valve only permitting the ambient atmosphere to one-way flow through the gas passage into the subsidiary compression room;    a gas passage connector located at circumference of the handle to communicate with a rear end of the gas passage; and    a cylinder body connector disposed at the front end of the cylinder body to communicate with a front end of the exhaust one-way valve.    
   
   
       12 . The inflator as claimed in  claim 11 , wherein the intake one-way valve is disposed in the subsidiary piston.  
   
   
       13 . The inflator as claimed in  claim 11 , wherein the intake one-way valve is disposed in the gas passage.  
   
   
       14 . The inflator as claimed in  claim 11 , wherein the intake one-way valve is disposed in the handle between a rear end of the piston rod and the gas passage connector.  
   
   
       15 . The inflator as claimed in  claim 11 , 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.  
   
   
       16 . An inflator with inflation and deflation effects, comprising: 
 a main cylinder body;    a subsidiary cylinder body;    a main piston disposed at a front end of the subsidiary cylinder body, the subsidiary cylinder body extending through rear end of the main cylinder body into the main cylinder body, the main piston being 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, the main piston being formed with a through hole communicating with an interior of the subsidiary cylinder body;    a subsidiary piston 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 through hole communicating the subsidiary compression room with the main compression room;    a piston rod having an internal gas passage, a front end of the piston rod extending through rear end of the subsidiary cylinder body into the subsidiary cylinder body to connect with the subsidiary piston, a front end of the gas passage communicating with the subsidiary compression room;    a handle connected with rear end of the piston rod, a rear end of the gas passage keeping communicating with outer side;    an intake one-way valve disposed at a front end of the cylinder body and only permitting the gas to flow from outer side into the compression room;    a first exhaust one-way valve disposed in a certain position, the first exhaust one-way valve only permitting the gas to one-way flow from the subsidiary compression room into the gas passage and then flow from outer end of the gas passage to outer side;    a gas-passage connector located at circumference of the handle to communicate with a rear end of the gas passage; and    a cylinder body connector disposed at the front end of the cylinder body to communicate with a front end of the exhaust one-way valve.    
   
   
       17 . The inflator as claimed in  claim 16 , wherein the exhaust one-way valve is disposed in the subsidiary piston.  
   
   
       18 . The inflator as claimed in  claim 16 , wherein the exhaust one-way valve is disposed in the gas passage.  
   
   
       19 . The inflator as claimed in  claim 16 , wherein the exhaust one-way valve is disposed in the handle between a rear end of the piston rod and the gas passage connector.  
   
   
       20 . The inflator as claimed in  claim 16 , 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.  
   
   
       21 . An inflator with inflation and deflation effects, comprising: 
 a cylinder body;    a piston fitted in the cylinder body, a 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 connected with a rear end of the piston rod for a user to hold, a rear end of the gas passage keeping communicating with outer side;    a first one-way valve disposed at a front end of the cylinder body, the first one-way valve only permitting the gas to one-way flow between outer side and the compression room, a first gas flow way being formed between the compression room and outer side;    a second one-way valve positioned in a certain position, a second gas flow way being formed between outer side, the gas passage and the compression room, the second one-way valve only permitting the gas to one-way flow within the second gas flow way, 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;    a gas passage connector located at circumference of the handle to communicate with a rear end of the gas passage; and    a cylinder body connector disposed at the front end of the cylinder body to communicate with a front end of the exhaust one-way valve.