Title:
PNEUMATICALLY COUPLED FLUID CONTROL SYSTEM AND PROCESS WITH AIR DETECTION AND ELIMINATION
Document Type and Number:
WIPO Patent Application WO/2014/190191
Kind Code:
A3
Abstract:
A fluid control system for delivery of a liquid includes a pneumatic drive that incorporates a linear actuator to effect known volume changes in a gas reservoir. The gas reservoir is in fluid communication with a gas-side reservoir that is separated from a fluid-side reservoir by a flexible membrane. Movement of the linear actuator effects positive or negative volume differences on the gas in the gas-side reservoir, resulting in a decrease or increase in pressure of the gas that is transmitted to the fluid-side reservoir to draw fluid, primarily liquid, in from a source or deliver liquid out to a sink. In another aspect, a mechanism is provided for the detection and elimination of air bubbles in the fluid path.
Inventors:
CARLISLE JEFFREY A (US)
KUBA LAWRENCE M (US)
KUBA LAWRENCE M (US)
Application Number:
PCT/US2014/039211
Publication Date:
January 29, 2015
Filing Date:
May 22, 2014
Export Citation:
Assignee:
LEVERAGED DEVELOPMENTS LLC (US)
International Classes:
A61M1/14; A61B17/50; B01D61/32
Foreign References:
| US8409441B2 | 2013-04-02 | |||
| US20060149211A1 | 2006-07-06 | |||
| US20110028937A1 | 2011-02-03 | |||
| US7654982B2 | 2010-02-02 | |||
| US8382771B2 | 2013-02-26 |
Other References:
See also references of EP 2999420A4
Attorney, Agent or Firm:
RAND, Scott, C. (Graf Raulerson & Middleton,Professional Association,900 Elm Street, PO Box 32, Manchester NH, US)
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