US4043774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for air purification
Assignee: Individual
•
Filing: 1976-04-26
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Granted: 1977-08-23
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Expires: 1996-04-26
Abstract
Abstract An air purification unit for use in a compressed air system, said unit including a chamber having a plurality of serially connected sections located therein, said sections comprising a heat transfer section, a filter and expansion section, a supply reservoir section and a drying section, each section having an inlet and an outlet, the outlet of said heat transfer section connected with the inlet of said filter and expansion section, the outlet of said filter and expansion section connected to the inlet of said supply reservoir section, and the outlet of said supply reservoir section connected with the inlet of said drying section.
Inventors
- 👤 Doyle Wayne McGrath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:24
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/26; B01D50/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
311 words
An air purification unit for use in a compressed air system including an air compressor, a discharge line from said air compressor, a filter in said discharge line and a compressed air service reservoir; said air purification unit comprising a unitary chamber means, closure means at the inlet end of said chamber means, said closure means formed with a plurality of air inlet openings; a plurality of serially connected sections located within said unitary chamber means; said sections including a heat transfer section spaced from said closure means, a filter and expansion section, a supply reservoir section and a drying section; inlet means and outlet means for each of said sections, the inlet means of said heat transfer section adapted to be connected to the discharge line from the air compressor downstream of the filter and the outlet means of said heat transfer section connected with the inlet means of said filter and expansion section, the outlet means of said filter and expansion section connected with the inlet means of said supply reservoir section, the outlet means of said supply reservoir section connected with the inlet means of said drying section, and the outlet means of said drying section adapted to be connected to the service reservoir in the compressed air system; and positively driven fan means located in said chamber means between said closure means and said heat transfer section and a plurality of air outlet openings in said chamber means downstream of said heat transfer section, said fan means moving atmospheric air through said air inlet openings into said chamber means, past said heat transfer section and through said air outlet openings; whereby compressed air from the air compressor flows through said air purification unit wherein the temperature of the compressed air is decreased and substantially all of the liquid and solid contaminants are removed from the compressed air.
Claim 2
Dependent Claim
311 words
An air purification unit for use in a compressed air system including an air compressor, a discharge line from said air compressor, a filter in said discharge line and a compressed air service reservoir; said air purification unit comprising a unitary chamber means, closure means at the inlet end of said chamber means, said closure means formed with a plurality of air inlet openings; a plurality of serially connected sections located within said unitary chamber means; said sections including a heat transfer section spaced from said closure means, a filter and expansion section, a supply reservoir section and a drying section; inlet means and outlet means for each of said sections, the inlet means of said heat transfer section adapted to be connected to the discharge line from the air compressor downstream of the filter and the outlet means of said heat transfer section connected with the inlet means of said filter and expansion section, the outlet means of said filter and expansion section connected with the inlet means of said supply reservoir section, the outlet means of said supply reservoir section connected with the inlet means of said drying section, and the outlet means of said drying section adapted to be connected to the service reservoir in the compressed air system; and positively driven fan means located in said chamber means between said closure means and said heat transfer section and a plurality of air outlet openings in said chamber means downstream of said heat transfer section, said fan means moving atmospheric air through said air inlet openings into said chamber means, past said heat transfer section and through said air outlet openings; whereby compressed air from the air compressor flows through said air purification unit wherein the temperature of the compressed air is decreased and substantially all of the liquid and solid contaminants are removed from the compressed air.
Claim 3
Dependent Claim
112 words
The air purification unit of claim 1 wherein said closure means located at the inlet end of said chamber means has first and second spaced circular members, said air inlet openings formed in said circular members, the air inlet openings in said first circular member being radially and axially offset relative to the air inlet openings in said second circular member, whereby atmospheric air passes through the air inlet openings in said first circular member and contacts said second circular member prior to passing through the air inlet openings in said second circular member and solid particles carried by the atmospheric air are deflected by the contact with said second circular member.
Claim 4
Dependent Claim
107 words
An air purification unit as set forth in claim 1 wherein said heat transfer section includes means forming at least one downwardly inclined continuous tortuous passage extending between said inlet means of said heat transfer section and said outlet means of said heat transfer section, a sump connected with said outlet means of said heat transfer section and a drain valve connected with said sump, whereby compressed air passing through said passage is cooled to condense vapor contained therein and the condensate flows along said downwardly inclined passage through said outlet means of said heat transfer section into said sump and is discharged through said drain valve.
Claim 5
Dependent Claim
73 words
An air purification unit as set forth in claim 3 wherein said means forming at least one passage consists of a first pair of spaced parallel members connected at their edges by a second pair of spaced parallel members located perpendicularly to said first pair of members, and a member extending between and parallel with said second pair of members to form a pair of downwardly inclined tortuous passages for the compressed air.
Claim 6
Dependent Claim
79 words
An air purification unit as set forth in claim 1 wherein said filter and expansion section contains a mass of mesh filter material located between said inlet means and said outlet means, whereby substantially all of the oil in the compressed air is retained upon said mass of mesh filter material and a portion of the water in the compressed air is retained upon said mesh filter material as said compressed air passes through said filter and expansion section.
Claim 7
Dependent Claim
73 words
An air purification unit as set forth in claim 1 including a conduit connecting said outlet means of said filter and expansion section with said inlet means of said supply reservoir section, and a one-way check valve located in said conduit, whereby said check valve provides a seal between said filter and expansion section and said supply reservoir section to maintain the compressed air in said supply reservoir section at the desired pressure.
Claim 8
Dependent Claim
51 words
Apparatus as set forth in claim 1 wherein said drying section contains a desiccant for removing residual moisture from said compressed air, a sump at the bottom of said drying section adjacent to said drying section inlet means, and a two-way drain valve connected with said sump for draining liquid therefrom.
Claim 9
Dependent Claim
275 words
An air purification unit for use in a compressed air system having an air compressor, a discharge line from said air compressor, a filter in said discharge line and a compressed air service reservoir; said unit comprising a unitary chamber means; a plurality of serially connected sections all located within said unitary chamber means; said sections including a heat transfer section, a filter and expansion section, a supply reservoir section having a substantially greater volume than said separator section to form an expansion chamber to permit expansion of compressed air passing into said supply reservoir section and a drying section; inlet means and outlet means for each of said sections, the inlet means of said heat transfer section adapted to be connected to the discharge line from the air compressor downstream of the filter and the outlet means of said heat transfer section connected with the inlet means of said filter and expansion section, the outlet means of said filter and expansion section connected with the inlet means of said supply reservoir section, the outlet means of said supply reservoir section connected with the inlet means of said drying section, and the outlet means of said drying section adapted to be connected to the service reservoir in the air compressor system; and positively driven fan means located within said chamber upstream of said heat transfer section to force atmospheric air into said chamber past said heat transfer section; whereby compressed air from the air compressor flows through said air purification unit wherein the temperature of the compressed air is decreased and substantially all of the liquid and solid contaminants are removed from the compressed air.
Claim 10
Dependent Claim
275 words
An air purification unit for use in a compressed air system having an air compressor, a discharge line from said air compressor, a filter in said discharge line and a compressed air service reservoir; said unit comprising a unitary chamber means; a plurality of serially connected sections all located within said unitary chamber means; said sections including a heat transfer section, a filter and expansion section, a supply reservoir section having a substantially greater volume than said separator section to form an expansion chamber to permit expansion of compressed air passing into said supply reservoir section and a drying section; inlet means and outlet means for each of said sections, the inlet means of said heat transfer section adapted to be connected to the discharge line from the air compressor downstream of the filter and the outlet means of said heat transfer section connected with the inlet means of said filter and expansion section, the outlet means of said filter and expansion section connected with the inlet means of said supply reservoir section, the outlet means of said supply reservoir section connected with the inlet means of said drying section, and the outlet means of said drying section adapted to be connected to the service reservoir in the air compressor system; and positively driven fan means located within said chamber upstream of said heat transfer section to force atmospheric air into said chamber past said heat transfer section; whereby compressed air from the air compressor flows through said air purification unit wherein the temperature of the compressed air is decreased and substantially all of the liquid and solid contaminants are removed from the compressed air.
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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) | 1980-08-22 | 1981-02-21 | 1981-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-22 | 1985-02-21 | 1985-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-22 | 1989-02-21 | 1989-08-23 | $7700.00 | Window Closed / Lapsed |