US4089655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air purification system
Assignee: INDIANA NATIONAL BANK
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Filing: 1976-10-20
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Granted: 1978-05-16
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Expires: 1996-10-20
Abstract
Abstract An air purification system accepts foul air from a source of high pressure and treats the air so as to deliver an acceptable breathable air usable in any life support package. The components of the system are mounted on a portable cart. The foul air passes through a plurality of stages in going from the foul to the usable condition. The air is monitored at the various positions along the system to insure that the system is operational.
Inventors
- 👤 John J. Razete
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:04
CPC Classifications
A; A62; A62B; A62B11/00; E; E21; E21D; E21D11/00; Y; Y10; Y10S; Y10S55/00; Y10S55/17
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
462 words
An apparatus for purifying contaminated air from a high pressure source such as a compressor or the like for delivery to a tank or the like as breathable air for breathing or the like by a human being comprising carrier support means; a first stage container securedly mounted on said carrier support means; said first stage container having an inlet and an outlet; said inlet of said first stage container receiving the contaminated air from the high pressure source; dehydrating means disposed within said first stage container to remove moisture from the air passing through said first stage container so that the moisture level of the air is at a predetermined dew point when passing through said outlet of said first stage container; a second stage container securedly mounted on said carrier support means; said second stage container having an inlet and an outlet; first means connecting said outlet of said first stage container and said inlet of said second stage container; bleed means connected to said first connecting means to bleed off a portion of the air passing through said first connecting means, said bleed means including a shut-off valve connected to said first connecting means, a flow limiter connected to said shut-off valve, indicating means to provide an indication of the moisture level of the air passing through said first connecting means and connected to said flow limiter, said flow limiter limiting the pressure in said indicating means, a safety valve connected between said flow limiter and said indicating means to prevent excessive pressure build up in said indicating means, and a bleed valve connected with said indicating means to permit bleed off of air therein; means disposed within said second stage container to remove hydrocarbons from the air passing through said second stage container; third stage container means securedly mounted on said carrier support means; said third stage container means having an inlet and an outlet; second means connecting said inlet of said third stage container means with said outlet of said second stage container; said third stage container means including at least one container; catalyst material means disposed within said third stage container means to convert carbon monoxide in the air passing through said third stage container means to carbon dioxide; a fourth stage container securedly mounted on said carrier support means; said fourth stage container having an inlet and an outlet; means disposed within said fourth stage container to remove odors from the air passing through said fourth stage container; third means connecting said outlet of said third stage container means with said inlet of said fourth stage container; and fourth means connecting said outlet of said fourth stage container with the tank or the like to which the purified air is supplied to charge the tank.
Claim 2
Independent Claim
462 words
An apparatus for purifying contaminated air from a high pressure source such as a compressor or the like for delivery to a tank or the like as breathable air for breathing or the like by a human being comprising carrier support means; a first stage container securedly mounted on said carrier support means; said first stage container having an inlet and an outlet; said inlet of said first stage container receiving the contaminated air from the high pressure source; dehydrating means disposed within said first stage container to remove moisture from the air passing through said first stage container so that the moisture level of the air is at a predetermined dew point when passing through said outlet of said first stage container; a second stage container securedly mounted on said carrier support means; said second stage container having an inlet and an outlet; first means connecting said outlet of said first stage container and said inlet of said second stage container; bleed means connected to said first connecting means to bleed off a portion of the air passing through said first connecting means, said bleed means including a shut-off valve connected to said first connecting means, a flow limiter connected to said shut-off valve, indicating means to provide an indication of the moisture level of the air passing through said first connecting means and connected to said flow limiter, said flow limiter limiting the pressure in said indicating means, a safety valve connected between said flow limiter and said indicating means to prevent excessive pressure build up in said indicating means, and a bleed valve connected with said indicating means to permit bleed off of air therein; means disposed within said second stage container to remove hydrocarbons from the air passing through said second stage container; third stage container means securedly mounted on said carrier support means; said third stage container means having an inlet and an outlet; second means connecting said inlet of said third stage container means with said outlet of said second stage container; said third stage container means including at least one container; catalyst material means disposed within said third stage container means to convert carbon monoxide in the air passing through said third stage container means to carbon dioxide; a fourth stage container securedly mounted on said carrier support means; said fourth stage container having an inlet and an outlet; means disposed within said fourth stage container to remove odors from the air passing through said fourth stage container; third means connecting said outlet of said third stage container means with said inlet of said fourth stage container; and fourth means connecting said outlet of said fourth stage container with the tank or the like to which the purified air is supplied to charge the tank.
Claim 3
Dependent Claim
129 words
The apparatus according to claim 1 in which said third stage container means includes a pair of container, each of said pair of containers having an inlet and an outlet, each of said pair of containers having catalyst material means disposed therein so that the air flowing from said inlet to said outlet passes therethrough, means connecting said outlet of the first one of said pair of containers with said inlet of the second one of said pair of containers, said second connecting means connecting said inlet of the first one of said pair of containers with said outlet of said second stage container, and said third connecting means connecting said outlet of the second one of said pair of containers with said inlet of said fourth stage container.
Claim 4
Dependent Claim
27 words
The apparatus according to claim 1 including gauge means disposed in said third connecting means to indicate the pressure of the air in said third connecting means.
Claim 5
Dependent Claim
107 words
The apparatus according to claim 3 including a line connecting said inlet of said first stage container with the high pressure source, a first shut-off valve disposed in said line to allow flow of air from the high pressure source to said inlet of said first stage container when open and to stop flow of air from the high pressure source to said inlet of said first stage container when closed, and a second shut-off valve disposed in said fourth connecting means to allow flow of air from said fourth stage container when open and to stop flow of air from said fourth stage container when closed.
Claim 6
Dependent Claim
47 words
The apparatus according to claim 4 including pressure responsive means in said fourth connecting means downstream of said second shut-off valve to allow flow through said fourth connecting means to the tank only when the pressure exceeds a predetermined pressure and said second shut-off valve is open.
Claim 7
Dependent Claim
53 words
The apparatus according to claim 1 in which said carrier support means includes a base and a center plate secured to said base and extending upwardly therefrom; each of said containers is mounted on said center plate; and at least two of said containers are mounted on each side of said center plate.
Claim 8
Dependent Claim
75 words
The apparatus according to claim 6 in which said carrier support means includes a pair of wheels rotatably secured to said base adjacent one end thereof, a framework securedly mounted to said base, a portion of said framework extending below said base at the other end thereof to provide a support for said base, and a handle pivotally secured to said framework to permit moving of said carrier support means from one location to another.
Claim 9
Dependent Claim
43 words
The apparatus according to claim 7 in which each of said containers has its inlet at its bottom and its outlet adjacent its top, and each of said containers has a removable top to enable removal of said means disposed therein when necessary.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-15 | 1981-11-14 | 1982-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-15 | 1985-11-14 | 1986-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-15 | 1989-11-14 | 1990-05-16 | $7700.00 | Window Closed / Lapsed |