Dispensing pump
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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May 4, 2004
Grant Date -
Mar 13, 2003
app pub date -
Sep 30, 2002
filing date -
May 11, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A dispensing pump for liquid or pasty products comprising a housing (2), a piston (6) arranged to move telescopically within the housing between rest and activated positions and a plastics spring (9) arranged to return the piston from its activated to its rest position. The plastics spring has a folded, concertina configuration to provide the required return force for the piston. The spring also has end plates (91, 92), which can be adapted increased functionality. The whole pump may be moulded from a plastics material and has few component parts.
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