초록 ▼

A variable flow reciprocating piston respirator system which is capable of providing a substantially constant oxygen enrichment over an entire inspiration stroke of a variable flow respirator output. A proportional control valve is used to deliver oxygen from an oxygen supply tank to the output of a

A variable flow reciprocating piston respirator system which is capable of providing a substantially constant oxygen enrichment over an entire inspiration stroke of a variable flow respirator output. A proportional control valve is used to deliver oxygen from an oxygen supply tank to the output of a reciprocation piston pump. A microprocessor controls the magnitude of opening of the proportional valve to insure that a proper overall volume of the output is produced with the proper percentage of enrichment of oxygen.

대표청구항 ▼

A variable flow reciprocating piston respirator system which is capable of providing a substantially constant supply gas enrichment of a reciprocating piston gas produced by said reciprocating piston respirator throughout an inspiratory stroke of said reciprocating piston respirator comprising: reci

A variable flow reciprocating piston respirator system which is capable of providing a substantially constant supply gas enrichment of a reciprocating piston gas produced by said reciprocating piston respirator throughout an inspiratory stroke of said reciprocating piston respirator comprising: reciprocating piston respirator means for producing a variable flow output of said reciprocating piston gas; supply gas reservoir means for providing a source of said supply gas to be admixed with said reciprocating piston gas; control valve means for regulating flow of said supply gas from said supply gas reservoir means; means for combining said flow of said supply gas from said control valve means with said variable flow output of said reciprocating piston gas downstream from said reciprocating piston respirator means; and, airway means for inducing turbulence sufficient to substantially mix said supply gas with said variable flow output of said reciprocating piston gas from said reciprocating piston respirator means; logic means for generating a control signal for regulating said control valve means such that said flow of said supply gas from said control valve means produces said substantially constant supply gas enrichments.