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Pump tip for fluid dispenser

  • US 5,501,372 A
  • Filed: 12/16/1994
  • Issued: 03/26/1996
  • Est. Priority Date: 05/27/1994
  • Status: Expired due to Term
First Claim
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1. An improved pump tip for use with a fluid vessel and pump tube in a fluid dispenser wherein said pump tube is connected to lower end of said fluid vessel such that fluid contained therein flows freely from said vessel into said pump tube,said pump tip comprising a body, a nozzle projecting downward from lower end of said body, and a tube coupling projecting upward from upper end of said body and attachable to lower end of said pump tube,said body containing an interior chamber, said chamber communicating with an output opening at lower end of said nozzle and further communicating with an input opening at upper end of said tube coupling whereby a continuous passage is formed through said pump tip,said body having at least one longitudinally-extending external mating surface, said mating surface directly engagable and closely fitting within a lower tube locator recess of said fluid dispenser, thereby providing a rigid interface and lateral support means to said pump tip and extending said tube coupling above said tube locator recess whereby said pump tip is not susceptible to lateral displacement during operation of said dispenser and said pump tube does not extend downward into said tube locator recess when attached to said tube coupling,said body further comprising keyed surfaces corresponding to mating surfaces in said tube locator recess, said keyed surfaces and said mating surfaces cooperating to provide resistance to twisting and upward movement of said pump tip when said pump tip is engaged with said tube locator recess,said external mating surface having a generally cylindrical shape, said keyed surfaces comprising at least one tab extending outward from said body corresponding to at least one mating slot in said tube locator recess and further comprising at least one step surface on said body corresponding to at least one mating step surface in said tube locator recess.

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