Measuring and testing – Measuring vessel
Patent
1977-08-11
1978-12-05
Swisher, S. Clement
Measuring and testing
Measuring vessel
222309, B01L 302
Patent
active
041280091
ABSTRACT:
The present invention relates to an adjustable diluting device, comprising a member for regulating the stroke of a first piston, presenting on its outer surface a thread adapted to cooperate with a thread made on the inner surface of the casing of said device, the lower end of said regulating member acting as stop limiting the upward stroke of the first piston; a tubular adjusting member whose lower end has a stop surface adapted to cooperate with the upper end of a sleeve for controlling the first piston and of which the inner surface is threaded; and a tubular push element fast with a shaft for controlling a second piston having an outer threaded adapted to cooperate with the inner thread of the tubular adjusting member. The invention is more particularly applied to laboratory equipment.
REFERENCES:
patent: 3646817 (1972-03-01), Hinchman et al.
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