Title: Vestibule valve reagent dispenser

Abstract: An arrangement for the controlled delivery of liquid reagent is shown wherein a reservoir vessel for storing the liquid in volume is coupled to replenish a "vestibule vessel" provided for intermediate storage of the liquid enroute to the delivery point and for pneumatic propulsion thereof, the liquid being pneumatically driven from reservoir to the vestibule through a unidirectional check valve.

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Other info:

Inventors: Sharples, Thomas Davy (Atherton, CA, US)

Application Number: 627803
Filing Date: 1975-10-31
Publication_date: 1977-06-14
Assignee: Beckman Instruments, Inc. (Fullerton, CA)
Primary Class(es): 422/100 137/209, 222/399, 422/103
Other Classes:
US Patent Ref:

1834245	Dec, 1931	Kantor et al.	137/209.
3531258	Sep, 1970	Merrifield et al.	23/253.
3536450	Oct, 1970	Dus et al.	23/253.
3557077	Jan, 1971	Brunfeld et al.	23/259.
3909205	Sep, 1975	Jones	23/259.

Other Refs:
Primary Examiner: Reese, Robert M.
Assistant Examiner:
Attorney: Steinmeyer; R. J., Harder; P. R., Frieman; R. S.