Structure for connecting a head to a non-circular cylinder of a bicycle tire pump

Abstract

A bicycle tire pump includes a cylinder having two passages defined therethrough which are separated by a board, two openings respectively defined in a top of the cylinder and communicating with the two passages into which two pistons are respectively and movably received. A head is mounted to the top of the cylinder and has two ways defined therein which respectively communicate with the two passages in the cylinder and an outlet of the head. A bolt extends through one of the two passages and is threadedly connected to the head. The bolt has a longitudinal passage defined therethrough which communicates with one of the two ways.

What is claimed is:  
     
       1. A bicycle tire pump comprising: 
       a cylinder having two passages defined therethrough which are separated by a board, two openings respectively defined in a top of said cylinder and communicating with said two passages, two pistons respectively and movably received in said two passages;  
       a head mounted to said top of said cylinder and having an outlet defined in one of two ends thereof, a valve received in said outlet and two ways defined in said head and respectively communicating with said two passages, and  
       a bolt extending through one of said two passages and threadedly connected to said head, said bolt having a longitudinal passage defined therethrough which communicates with one of said two ways.  
     
     
       2. The bicycle tire pump as claimed in  claim 1  further comprising a connecting member fixedly received in the head, said connecting member having a threaded hole defined centrally therethrough so that said bolt is threadedly engaged with said threaded hole. 
     
     
       3. The bicycle tire pump as claimed in  claim 1  further comprising a sleeve member fixedly received in said passage where the bolt extends, said bolt extending thorough  through said sleeve member. 
     
     
       4. The bicycle tire pump as claimed in  claim 3 , wherein said sleeve member is threadedly received in said passage. 
     
     
       5. The bicycle tire pump as claimed in  claim 1 , wherein said head has a skirt portion in which said top of said cylinder is received. 
     
     
       6. A bicycle tire pump comprising: 
       a cylinder having two passages defined therethrough which are separated by a board, two openings respectively defined in a top of said cylinder and communicating with said two passages, two pistons respectively and movably received in said two passages;  
       a head mounted to said top of said cylinder and having an outlet defined in one of two ends thereof, a valve received in said outlet and two ways defined in said head and respectively communicating with said two passages;  
       a sleeve member fixedly received in one of said two passages and a bolt extending through said sleeve member and threadedly connected to said head, and  
       a first path defined through said sleeve member and said bolt and a second path defined in said head and communicating with said first path, said first path communicating with said passage having said sleeve member and said bolt and said second path communicating with said valve.  
     
     
       7. The bicycle tire pump as claimed in  claim 6  further comprising a connecting member fixedly received in the head, said connecting member having a threaded hole defined centrally therethrough so that said bolt is threadedly engaged with said threaded hole. 
     
     
       8. The bicycle tire pump as claimed in  claim 6 , wherein said sleeve member is threadedly received in said passage. 
     
     
       9. The bicycle tire pump as claimed in  claim 6 , wherein said head has a skirt portion in which said top of said cylinder is received. 
     
     
       10. The bicycle tire pump as claimed in  claim 6 , wherein said bolt has a longitudinal passage defined therethrough which communicates with one of said two ways. 
     
     
       11. A bicycle tire pump comprising: 
       
         a cylinder including a non-circular outer periphery, the cylinder including an interior;  
       
       
         at least a first piston movably received in the interior of the cylinder;  
       
       
         a head directly mounted on top of the cylinder in a nonrotatable manner and including an outlet that is communicated with the interior of the cylinder; and  
       
       
         means mounted in the interior of the cylinder and having a first end securely retained in the interior of the cylinder and a second end extended beyond the cylinder for securely engaging with the head, with the head and the outlet being separable from the cylinder only by removal of the engaging means. 
       
     
     
       12. The bicycle tire pump as claimed in  claim 11 , wherein said engaging means is a bolt, and wherein the head includes a threaded hole for engaging with the bolt. 
     
     
       13. The bicycle tire pump as claimed in  claim 12 , further comprising a sleeve member securely mounted in the interior of the cylinder, the sleeve member including a longitudinal hole through which the bolt extends. 
     
     
       14. The bicycle tire pump as claimed in  claim 13 , wherein the sleeve member is threadedly received in the interior of the cylinder. 
     
     
       15. The bicycle tire pump as claimed in  claim 11 , wherein the head has a skirt portion in which the top of the cylinder is received. 
     
     
       16. The bicycle tire pump as claimed in  claim 11 , wherein said engaging means is a bolt, and wherein the head includes a connecting member fixedly mounted therein, the connecting member including a threaded hole for engaging with the bolt. 
     
     
       17. The bicycle tire pump as claimed in  claim 11 , wherein the interior of the cylinder is cylindrical. 
     
     
       18. The bicycle tire pump as claimed in  claim 11 , wherein the head includes two necks extending from a lower portion thereof, said necks being integral with the head and configured for engaging with the non-circular outer periphery of the cylinder, the second end of the engaging means being engaged with one of said necks. 
     
     
       19. A bicycle tire pump comprising: 
       
         a cylinder including a non-circular outer periphery, the cylinder including an interior;  
       
       
         at least a first piston movably received in the interior of the cylinder;  
       
       
         a head mounted on top of the cylinder and including an outlet that is communicated with the interior of the cylinder; and  
       
       
         means mounted in the interior of the cylinder and having a first end securely retained in the interior of the cylinder and a second end extended beyond the cylinder for securely engaging with the head, wherein the interior of the cylinder includes two passages defined therethrough, the two passages being separated by a board, the head including two ways that are communicated with the outlet and that are communicated with the passages, respectively;  
       
       
         said engaging means being a bolt extending through one of the passages of the cylinder and one of the ways of the head and threadedly connected with the head. 
       
     
     
       20. The bicycle tire pump as claimed in  claim 19 , wherein the bolt comprises a longitudinal hole that communicates said one of the passages of the cylinder with said one of the ways of the head. 
     
     
       21. The bicycle tire pump as claimed in  claim 20 , further comprising a sleeve member securely mounted in said one of the passages of the cylinder, the sleeve member including a longitudinal hole through which the bolt extends. 
     
     
       22. The bicycle tire pump as claimed in  claim 21 , wherein the sleeve member is threadedly received in said one of the passages of the cylinder. 
     
     
       23. The bicycle tire pump as claimed in  claim 19 , wherein the head has a skirt portion in which the top of the cylinder is received. 
     
     
       24. The bicycle tire pump as claimed in  claim 19 , wherein the head includes a connecting member fixedly mounted therein, the connecting member including a threaded hole for engaging with the bolt.