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Title: Fluid driven reciprocating apparatus

An apparatus is described comprising a pair of fluid driven pump assemblies in a back-to-back configuration to yield a bi-directional pump. Each of the pump assemblies includes a piston or diaphragm which divides a chamber therein to define a power section and a pumping section. An intake-exhaust valve is connected to each of the power sections of the pump chambers, and function to direct fluid, such as compressed air, into the power section and exhaust fluid therefrom. At least one of the pistons or diaphragms is connected by a rod assembly which is constructed to define a signal valve, whereby the intake-exhaust valve of one pump assembly is controlled by the position or location of the piston or diaphragm in the other pump assembly through the operation of the rod assembly signal valve. Each of the pumping sections of the pump assemblies are provided with intake and exhaust valves to enable filling of the pumping section with fluid and discharging fluid therefrom when a desired pressure has been reached. 13 figs.
Inventors:
Issue Date:
OSTI Identifier:
462852
Assignee:
Univ. of California, Oakland, CA (United States) PTO; SCA: 420200; PA: EDB-97:062422; SN: 97001767264
Patent Number(s):
US 5,616,005/A/
Application Number:
PAN: 8-335,605
Contract Number:
W-7405-ENG-48
Resource Relation:
Other Information: PBD: 1 Apr 1997
Research Org:
University of California
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; PUMPS; DESIGN; OPERATION; INTAKE STRUCTURES; OUTLET STRUCTURES; PRESSURE CONTROL