Combination pump head

A pump head for alternate use with a first valve stem having a cylindrical body and a second valve stem having a cylindrical body, the first valve stem having an outer diameter greater than the outer diameter of the second valve stem, and a valve biased in a sealing position, said pump head comprising:

• a main body defining a chamber therethrough and having a top end and a bottom end;
• a resilient collar positioned in said chamber adjacent the bottom end of said main body;
• a force-transmitting means positioned in said chamber in engagement with said collar and adjacent to said top end;
• a means for selectively displacing said force-transmitting means to compress said collar, said force-transmitting means having a first position to axially compress said collar a small amount, a second position to axially compress said collar an intermediate amount to sealingly engage said first valve stem and depress said valve and disengage it from said sealing position, and a third position to axially compress said collar a large amount and sealingly engage said second valve stem.

A pump head for alternate use with a large diameter valve stem having a valve biased in a sealing position and a small diameter valve stem, said pump head comprising:

• a main body having a chamber, a top end and a bottom end, and an air inlet port communicating with said chamber;
• a plunger slidably positioned in said chamber adjacent said top end of said main body having a top end with an engagement surface and a bottom surface, a nipple extending from said bottom surface and centrally positioned thereon;
• a spacer slidably positioned in said chamber and defining a center bore and having a top end with a plurality of circumferentially spaced fingers defining a plurality of notches therebetween, said fingers each having defining a top engagement surface, a bottom end, each of said top engagement surfaces being in engagement with said bottom surface of said plunger;
• a camming device pivotally mounted at said top end of said main body, said camming device having a first, second and third cam surfaces in selective engagement with said top engagement surface of said plunger;
• a resilient collar stationarily positioned in said chamber adjacent said bottom end and defining an axial center bore, said collar having an inner wall and an inner diameter, said collar engaging said bottom end of said spacer;
• and
• wherein when said large diameter valve stem is positioned in said axial cavity and said second cam surface engages said top engagement surface of said plunger, said nipple engages the biased valve to release said sealing engagement and said inner wall of said collar engages said larger diameter valve stem to form an airtight seal, and when said smaller diameter valve stem is positioned in said axial cavity and said third cam surface engages said top engagement surface of said plunger, said inner wall of said collar engages said smaller diameter valve stem to form an airtight seal.