Precision small displacement fluid pump

Details Precision small displacement fluid pump Precision small displacement fluid pump

1995-02-24

1996-02-13

Freay, Charles

Pumps

With signal, indicator, or inspection means

417379, 417401, 13710111, 13710121, 13710131, 73 46, 73168, 92 865, 92153, F04B 2100, F04B 3502

Patent

active

054907667

ABSTRACT:
A fluid pump for displacing a small, precise volume of fluid for each pump stroke, particularly where the fluid to be displaced is a liquid containing dissolved gas. The precise volume of fluid to be displaced is adjustable to any selected amount up to the full displacement of the pump. The pump has instrumentation that indicates a seal failure within the pump, thus allowing for maintenance on the pump before a total failure. This instrumentation results in increased safety when the pump is used to inject odorant into a natural gas pipeline or in other precision chemical injection applications.

REFERENCES:
patent: 4180083 (1979-12-01), Miyaoka et al.
patent: 4436674 (1984-03-01), McMenamin
patent: 4531895 (1985-07-01), Zeck
patent: 4611294 (1986-09-01), Stanfill
patent: 5032063 (1991-07-01), Zeck et al.
patent: 5152678 (1992-10-01), Zeck
patent: 5193991 (1993-03-01), Koelder et al.
patent: 5213586 (1993-05-01), Welker
patent: 5252042 (1993-10-01), Yonezawa
patent: 5345812 (1994-09-01), Haboian
patent: 5372352 (1994-12-01), Smith et al.

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