Air pump having pivotal pressure gauge

Abstract

An air pump device includes a housing having a barrel, a gasket engaged in the housing and having a cavity for engaging with an inflation valve, a pumping mechanism coupled to the barrel for generating and supplying a pressurized air to the barrel and the housing, the barrel includes an outer peripheral recess communicating with the chamber of the barrel for receiving the pressurized air from the barrel, and a pressure gauge includes a ring member engaged onto the barrel and includes an inlet formed in the pressure gauge and communicating with the outer peripheral recess of the barrel for receiving the pressurized air from the barrel and for indicating a pressure in the chamber of the barrel.

I claim: 
     
         1 . An air pump device comprising:
 a housing including a compartment formed therein, and including a barrel having a chamber formed in said barrel, and having an entrance formed in said barrel and communicating with said compartment of said housing and communicating with said chamber of said barrel for guiding a pressurized air to flow from said chamber of said barrel into said compartment of said housing,   a gasket engaged in said compartment of said housing, and said gasket including a cavity formed in said gasket for engaging with an inflation valve,   a pumping mechanism coupled to said barrel of said housing for generating and supplying the pressurized air to said chamber of said barrel and said compartment of said housing, wherein:   said barrel of said housing includes an outer peripheral recess formed in an outer peripheral portion of said barrel and communicating with said chamber of said barrel for receiving the pressurized air from said barrel, and a pressure gauge includes a ring member engaged onto said barrel and includes an inlet formed in said pressure gauge and communicating with said outer peripheral recess of said barrel for receiving the pressurized air from said barrel and for indicating a pressure in said chamber of said barrel.   
     
     
         2 . The air pump device as claimed in  claim 1 , wherein said barrel of said housing includes at least one orifice formed in said barrel and communicating with said outer peripheral recess and said chamber of said barrel for allowing the pressurized air to flow from said chamber of said barrel and through said at least one orifice and into said outer peripheral recess of said barrel. 
     
     
         3 . The air pump device as claimed in  claim 1 , wherein said barrel of said housing includes two sealing rings engaged onto said barrel and engaged with said ring member of said pressure gauge for making an air tight seal between said ring member of said pressure gauge and said barrel. 
     
     
         4 . The air pump device as claimed in  claim 3 , wherein said barrel of said housing includes two outer peripheral depressions formed in said barrel for engaging with sealing rings respectively, and said outer peripheral recess is located between said outer peripheral depressions of said barrel and said sealing rings. 
     
     
         5 . The air pump device as claimed in  claim 1 , wherein said housing includes a sliding member slidably received and engaged in said compartment of said housing, said sliding member includes a bore formed therein and communicating with said entrance of said barrel for receiving the pressurized air from said barrel, said sliding member is engaged with said gasket. 
     
     
         6 . The air pump device as claimed in  claim 5 , wherein said housing includes a follower slidably engaged in said compartment of said housing and engaged with said sliding member. 
     
     
         7 . The air pump device as claimed in  claim 6 , wherein said housing includes a hand grip having a cam member engaged in said compartment of said housing and pivotally secured to said housing with a pivot shaft, and said cam member is engaged with said follower for forcing said follower and said sliding member to engage with said gasket. 
     
     
         8 . The air pump device as claimed in  claim 1 , wherein said housing includes a cover attached to said housing and engaged with said gasket. 
     
     
         9 . The air pump device as claimed in  claim 1 , wherein said pumping mechanism includes a tubular member coupled to said barrel of said housing, and having a space formed in said tubular member, a piston slidably engaged in said space of said tubular member and movable relative to said tubular member for generating a pressurized air. 
     
     
         10 . The air pump device as claimed in  claim 9 , wherein said pumping mechanism includes a piston rod extended from said piston, and a handle attached to said piston rod for moving said piston relative to said tubular member in order to generate the pressurized air.