US3853516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas dilution apparatus
Assignee: Individual
•
Filing: 1974-02-11
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Granted: 1974-12-10
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Expires: 1994-02-11
Abstract
Abstract Gas dilution apparatus for providing a source of a dilute gas containing a pollutant gas component for detection and/or analysis, in which a gas stream containing a pollutant gas is drawn into the apparatus and through first passage means and a trap to a gas scrubbing assembly. A small quantity of the gas stream containing the gaseous pollutant is drawn off from the first passage means by way of a restricted flow passage for admixture with the scrubbed gas from the gas scrubber assembly.
Inventors
- 👤 N Lyshkow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:53
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/28; G01N1/38; B; B01; B01D; B01D53/00; B01D53/02; G01N1/02; G01N1/22; G01N1/2247; G01N2001/2267; G01N2001/227; G01N33/00; G01N33/0004
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
221 words
Apparatus for diluting fluids comprising a body, gas inlet means for receiving a gas stream containing a pollutant gas, first passage means in the body communicating with the gas inlet means, trap means mounted on the body and communicating with the first passage means to receive the gas stream flowing therethrough, gas scrubbing means adapted to remove the pollutant gas from the gas stream flowing therethrough, via second passage means which communicate with the trap means and the scrubbing means, gas discharge means adapted to be connected to a zone of reduced pressure, scrubbed gas passage means communicating with the scrubbing means and the discharge means and restricted flow passage means extending into the scrubbed gas passage means and extending into the first passage means whereby reduced pressure applied at the discharge means draws the gas stream through the inlet means and through the first passage means to provide flow of the bulk of the gas stream through the first passage means to the trap means and then through the gas scrubbing means for removal of pollutant gas therefrom and to form an inert diluent gas and to provide flow of a small amount of the gas stream containing pollutant gas through the restricted flow passage means to permit admixture of the small amount of the gas stream containing pollutant gas.
Claim 2
Dependent Claim
221 words
Apparatus for diluting fluids comprising a body, gas inlet means for receiving a gas stream containing a pollutant gas, first passage means in the body communicating with the gas inlet means, trap means mounted on the body and communicating with the first passage means to receive the gas stream flowing therethrough, gas scrubbing means adapted to remove the pollutant gas from the gas stream flowing therethrough, via second passage means which communicate with the trap means and the scrubbing means, gas discharge means adapted to be connected to a zone of reduced pressure, scrubbed gas passage means communicating with the scrubbing means and the discharge means and restricted flow passage means extending into the scrubbed gas passage means and extending into the first passage means whereby reduced pressure applied at the discharge means draws the gas stream through the inlet means and through the first passage means to provide flow of the bulk of the gas stream through the first passage means to the trap means and then through the gas scrubbing means for removal of pollutant gas therefrom and to form an inert diluent gas and to provide flow of a small amount of the gas stream containing pollutant gas through the restricted flow passage means to permit admixture of the small amount of the gas stream containing pollutant gas.
Claim 3
Dependent Claim
46 words
Apparatus as defined in claim 1 wherein the restricted flow passage means is a hollow needle having a small cross-sectional area whereby the small amount of gas flowing therethrough has a low kinetic energy to permit solid and liquid components to pass to the trap means.
Claim 4
Dependent Claim
31 words
Apparatus as defined in claim 2 wherein the scrubbed gas passage means terminates in a chamber, with the needle being positioned in the chamber extending into the scrubbed gas passage means.
Claim 5
Dependent Claim
20 words
Apparatus as defined in claim 3 wherein the needle extends into the scrubbed gas passage means beyond the discharge means.
Claim 6
Dependent Claim
22 words
Apparatus as defined in claim 1 wherein the inlet means includes gas sampling means adapted to be inserted into the gas stream.
Claim 7
Dependent Claim
31 words
Apparatus as defined in claim 1 wherein the trap means is removably mounted on said body and is formed of a transparent material to permit visual inspection of the contents thereof.
Claim 8
Dependent Claim
50 words
Apparatus as defined in claim 1 wherein the trap means communicates with the first passage means through first tube means and the trap means communicates with the second passage means through second tube means, with the first tube means projecting into the trap means farther than the second tube means.
Claim 9
Dependent Claim
27 words
Apparatus as defined in claim 1 wherein the gas scrubbing means includes one or more zones containing material capable of removing pollutant gas from the gas stream.
Claim 10
Dependent Claim
57 words
Apparatus as defined in claim 1 wherein the gas scrubbing means includes three zones, with one zone adapted to remove water from the gas stream, with the second zone containing means adapted to remove pollutant gas from the gas stream, and with the third zone containing means adapted to remove any remaining impurities in the gas stream.
Claim 11
Dependent Claim
52 words
Apparatus as defined in claim 1 wherein the gas scrubbing means is positioned in cavity in the body, with the base of the gas scrubbing means being positioned about a conical chamber adapted to receive liquid from the gas scrubbing means for return to the trap means through the second passage means.
Claim 12
Dependent Claim
23 words
Apparatus as defined in claim 1 which includes valve means in the scrubbed gas passage means to control the flow of gases therethrough.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |