Liquid dispensing and recirculating module

Details Liquid dispensing and recirculating module Liquid dispensing and recirculating module

1998-09-15

2000-07-18

Shaver, Kevin

Dispensing

With discharge assistant

With bypass or return to supply

504559, B65D 8854

Patent

active

06089413&

ABSTRACT:
A liquid dispensing module for alternately dispensing and recirculating liquid including a module body having a valve stem mounted for reciprocating movement within a main passage of the body. The valve stem includes first and second valve members for respectively engaging first and second valve seats in the main passage. A recirculation passage communicates with the main passage. When the valve stem is in a dispensing position, liquid is prevented from flowing into the recirculation passage and instead flows out of one end of the module. However, when the valve stem is in a recirculation position, liquid is prevented from flowing out of the module and instead enters the recirculation passage where it may flow back to a main pump or supply in a recirculation loop. Apparatus and methods incorporating the liquid dispensing module are further described and encompass similar concepts.

REFERENCES:
patent: 4687137 (1987-08-01), Boger et al.
patent: 4850514 (1989-07-01), Scholl et al.
patent: 5277344 (1994-01-01), Jenkins
patent: 5407101 (1995-04-01), Hubbard
patent: 5458684 (1995-10-01), Miller et al.
patent: 5620139 (1997-04-01), Ziecker

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