Pump

Abstract

A pump includes a barrel slideably receiving an end of a piston rod. A valve seat is mounted to the barrel and has an air passageway. An adapter is mounted to the valve seat and includes a channel in communication with the air passageway. An end of a hose is connected to the channel. A coupling seat is mounted to the other end of the hose. A connecting block is mounted around the coupling seat. The connecting block is positionable to a side of the barrel. Two rotary inflation nozzles of different specifications are mounted to two ends of another hose. Each rotary inflation nozzle has a coupling thread for engaging with an inner thread of the coupling seat. When not in use, one of the rotary inflation nozzles is inserted into the barrel, and the other rotary inflation nozzle is engaged with an end portion on the piston rod.

1 . A pump comprising:
 a barrel, with a top cap mounted in an end of the barrel, with another end of the barrel including a valve seat, with the valve seat including an air passageway, with an adapter mounted to a side of the valve seat and including a channel in communication with the air passageway, with the adapter including a pivotal end pivotably connected to the valve seat and located at an end of the channel;   a piston rod including an end having an end portion connected to a handle, with the end portion including an inner periphery having a positioning portion, with the piston rod including a hollow receiving portion, with the piston rod engaged with the positioning portion of the end portion, with the piston rod extended into the barrel, with the top cap located between the piston rod and the end of the barrel, with a piston mounted to an end of the piston rod received in the barrel;   a hose including an end connected to another end of the channel of the adapter opposite to the pivotal end, with the hose including another end, with a coupling seat mounted to the other end of the hose and including an inner thread, with a connecting block mounted around the coupling seat, with the connecting block positionable to a side of the barrel; and   a hose with dual inflation nozzles, with two rotary inflation nozzles of different specifications mounted to two ends of the hose with dual inflation nozzles, with each of the two rotary inflation nozzles of different specifications having a coupling thread at an outer end of an outer periphery thereof, with the coupling threads of the two rotary inflation nozzles having identical size, with either of the coupling threads of the two rotary inflation nozzles threadedly engageable with the inner thread of the coupling seat, with one of the two rotary inflation nozzles insertable into the barrel, with another of the two rotary inflation nozzles including a positioning portion on an inner end of the outer periphery thereof, with the positioning portion of the other of the two rotary inflation nozzles engageable with the positioning portion of the end portion.   
     
     
         2 . The pump as claimed in  claim 1 , with the top cap including a central hole, with the piston rod extending through the central hole of the top cap. 
     
     
         3 . The pump as claimed in  claim 1 , with the top cap including a plurality of air inlets in communication with an interior space of the barrel for guiding air into the interior of the barrel. 
     
     
         4 . The pump as claimed in  claim 1 , with an airtight ring mounted around the piston rod at a connection area between the piston rod and the piston. 
     
     
         5 . The pump as claimed in  claim 1 , with the adapter pivotable relative to the valve seat to change an angular position relative to the valve seat. 
     
     
         6 . The pump as claimed in  claim 1 , with the connecting block including a fixing portion, with the fixing portion mounted to an outer periphery of the coupling seat. 
     
     
         7 . The pump as claimed in  claim 1 , with the connecting block including a connecting portion, with the connecting portion receiving and positioning the other of the two rotary inflation nozzles to position the hose with dual inflation nozzles when said one of the two rotary inflation nozzles is inserted into the barrel, retaining the hose to a side of the barrel by the connecting block. 
     
     
         8 . The pump as claimed in  claim 1 , with each of the two rotary inflation nozzles including an interior structure having cross sections adapted to be rotatably and threadedly engaged with a valve of a tire. 
     
     
         9 . The pump as claimed in  claim 1 , further comprising a collapsible pedal mounted to a bottom end of the barrel.