04475666 is referenced by 109 patents and cites 6 patents.

A servo controlled actuator for an automated liquid dispenser for dispensing reagents or diluting samples with reagent automatically in accord with a programmed local microprocessor or remote computer control. The dispenser has at least one reciprocable syringe, valving for it and a syringe actuator driven by a hybrid servo control. The actuator includes a bi-directional variable speed motor and an encoder developing a pulse train which in number is representative of the position of the syringe piston and in repetition rate is representative of piston velocity. A microprocessor controls the piston stroke from the pulse train by comparison to a memory-stored count and controls piston velocity in predetermined relation to the terminal end of piston travel.

Title
Automated liquid dispenser control
Application Number
6/297956
Publication Number
4475666
Application Date
August 31, 1981
Publication Date
October 9, 1984
Inventor
John S H Loram
Berkeley
CA, US
Bruce R Koball
Emeryville
CA, US
Robert A Bilbrey
Orinda
CA, US
Agent
James F Mitchell
Assignee
American Hospital Supply Corporation
IL, US
IPC
B67D 5/30
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