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US3929419A Expired / Lapsed US ⏱️ 0.0 years remaining

Dual cross-flow canister and process

Assignee: 3M Co
•
Filing: 1973-08-31
•
Granted: 1975-12-30
•
Expires: 1993-08-31
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Abstract

Abstract A process is provided for the facial mounting of a dual crossflow supported catalyst and a canister is provided wherein manifolding inlet and outlet means bring exhaust gases to and away from the supported catalyst at an angle of about 45* to the direction and in the plane of flow through the catalyst support. The frame of the canister provides surfaces for rigid positioning of the catalyst support around the peripheries of at least two of its four active faces. Means are provided for addition of air between two catalytic stages.

Inventors

  • 👤 Harvey A Chapman

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 16:12
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/28; F01N3/2839; F01N3/2853; F01N3/2857; F01N3/2803; F01N3/2825; F01N3/2828; F01N3/2882; F01N3/2889; F01N3/2892; F01N3/30; F01N3/34; F01N13/00; F01N13/14; F01N2240/00; F01N2240/02; F01N2260/00; F01N2260/10; F01N2330/00; F01N2330/06; F01N2350/00; F01N2350/02; F01N2350/04; F01N2350/06; F01N2450/00; F01N2450/30; F01N2470/00; F01N2470/18; F01N2490/00; F01N2490/16; F01N2530/00; F01N2530/02; F01N2530/04; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12

Claims Analysis

Total Claims: 41
Claim 1
Independent Claim 25 words
A CONTAINER OR CANISTER FOR CONNECTION INTO THE EXHAUST STREAM OF AN ENGINE AND FOR POSITIONING A CATALYST SUPPORT IN SAID STREAM COMPRISING, IN COMBINATION,
Claim 2
Dependent Claim 25 words
A CONTAINER OR CANISTER FOR CONNECTION INTO THE EXHAUST STREAM OF AN ENGINE AND FOR POSITIONING A CATALYST SUPPORT IN SAID STREAM COMPRISING, IN COMBINATION,
Claim 3
Dependent Claim 36 words
A CASING CONTAINING AND HOLDING A CATALYST SUPPORT, SAID CASING HAVING TWO PARTS, A COVER AND A BASE, SAID COVER AND SAID BASE MATING AND BEING JOINED AT PERIPHERALLY FLANGED RECTANGULAR OPENINGS, A. SAID BASE HAVING
Claim 4
Dependent Claim 36 words
A CASING CONTAINING AND HOLDING A CATALYST SUPPORT, SAID CASING HAVING TWO PARTS, A COVER AND A BASE, SAID COVER AND SAID BASE MATING AND BEING JOINED AT PERIPHERALLY FLANGED RECTANGULAR OPENINGS, A. SAID BASE HAVING
Claim 5
Dependent Claim 29 words
A ROUNDED BOTTOM, APPROXIMATELY PARABOLOID END MEMBERS AND EXTENDED SIDE WALLS, SAID SIDE WALLS DIVERGING TOWARD A FIRST PAIR OF OPPOSITE SIDES OF THE RECTANGULAR OPENING OF SAID BASE,
Claim 6
Dependent Claim 29 words
A ROUNDED BOTTOM, APPROXIMATELY PARABOLOID END MEMBERS AND EXTENDED SIDE WALLS, SAID SIDE WALLS DIVERGING TOWARD A FIRST PAIR OF OPPOSITE SIDES OF THE RECTANGULAR OPENING OF SAID BASE,
Claim 7
Dependent Claim 32 words
RIGHT-TRIANGULAR END PIECES HAVING THE RIGHT ANGLE AT THE APEX, THE HYPOTENUSES OF SAID TRIANGULAR END PIECES MATING WITH THE TRIANGULAR SUPPORT FRAMES OF THE SAID PARABOLOID END MEMBERS OF SAID BASE,
Claim 8
Dependent Claim 32 words
RIGHT-TRIANGULAR END PIECES HAVING THE RIGHT ANGLE AT THE APEX, THE HYPOTENUSES OF SAID TRIANGULAR END PIECES MATING WITH THE TRIANGULAR SUPPORT FRAMES OF THE SAID PARABOLOID END MEMBERS OF SAID BASE,
Claim 9
Dependent Claim 17 words
A RIDGE CONNECTING THE RIGHT ANGLES OF SAID RIGHT-TRIANGULAR END PIECES AND FORMING AN INTERNAL ANGLE THEREBETWEEN;
Claim 10
Dependent Claim 17 words
A RIDGE CONNECTING THE RIGHT ANGLES OF SAID RIGHT-TRIANGULAR END PIECES AND FORMING AN INTERNAL ANGLE THEREBETWEEN;
Claim 11
Dependent Claim 91 words
SAID APPROXIMATELY PARABOLOID END MEMBERS COMPRISING RIGHT-TRIANGULAR SUPPORT FRAMES, SAID TRIANGULAR SUPPORT FRAMES HAVING EQUAL SIDES MEETING AT A RIGHT ANGLE, SAID RIGHT ANGLE BEING LOCATED NEAR THE ROUNDED BOTTOM OF THE BASE, THE HYPOTENUSES OF SAID TRIANGULAR SUPPORT FRAMES FORMING THE TOP EDGES OF SAID END MEMBERS WHICH HYPOTENUSES ALSO FORM THE SECOND PAIR OF OPPOSITE SIDES OF THE RECTANGULAR OPENING OF SAID BASE AND THE EQUAL SIDES OF SAID SUPPORT FRAMES FORMING SIDE RAILS, AND SAID END MEMBERS, SAID ROUNDED BOTTOM AND SAID SIDE WALLS FORMING A PLENUM SPACE,
Claim 12
Dependent Claim 91 words
SAID APPROXIMATELY PARABOLOID END MEMBERS COMPRISING RIGHT-TRIANGULAR SUPPORT FRAMES, SAID TRIANGULAR SUPPORT FRAMES HAVING EQUAL SIDES MEETING AT A RIGHT ANGLE, SAID RIGHT ANGLE BEING LOCATED NEAR THE ROUNDED BOTTOM OF THE BASE, THE HYPOTENUSES OF SAID TRIANGULAR SUPPORT FRAMES FORMING THE TOP EDGES OF SAID END MEMBERS WHICH HYPOTENUSES ALSO FORM THE SECOND PAIR OF OPPOSITE SIDES OF THE RECTANGULAR OPENING OF SAID BASE AND THE EQUAL SIDES OF SAID SUPPORT FRAMES FORMING SIDE RAILS, AND SAID END MEMBERS, SAID ROUNDED BOTTOM AND SAID SIDE WALLS FORMING A PLENUM SPACE,
Claim 13
Dependent Claim 17 words
a ridge connecting the right angles of said right-triangular end pieces and forming an internal angle therebetween;
Claim 14
Dependent Claim 17 words
a ridge connecting the right angles of said right-triangular end pieces and forming an internal angle therebetween;
Claim 15
Dependent Claim 91 words
said approximately paraboloid end members comprising right-triangular support frames, said triangular support frames having equal sides meeting at a right angle, said right angle being located near the rounded bottom of the base, the hypotenuses of said triangular support frames forming the top edges of said end members which hypotenuses also form the second pair of opposite sides of the rectangular opening of said base and the equal sides of said support frames forming side rails, and said end members, said rounded bottom and said side walls forming a plenum space,
Claim 16
Dependent Claim 91 words
said approximately paraboloid end members comprising right-triangular support frames, said triangular support frames having equal sides meeting at a right angle, said right angle being located near the rounded bottom of the base, the hypotenuses of said triangular support frames forming the top edges of said end members which hypotenuses also form the second pair of opposite sides of the rectangular opening of said base and the equal sides of said support frames forming side rails, and said end members, said rounded bottom and said side walls forming a plenum space,
Claim 17
Dependent Claim 34 words
A container or canister according to claim 1 additionally having an angle support member connecting the right angles of the triangular support frames and supporting the said first longitudinal edge of the catalyst support.
Claim 18
Dependent Claim 15 words
a vane between said end members below the right angles of the triangular support frames,
Claim 19
Dependent Claim 15 words
a vane between said end members below the right angles of the triangular support frames,
Claim 20
Dependent Claim 11 words
cross-rails connecting the acute angles of said triangular end pieces and
Claim 21
Dependent Claim 11 words
cross-rails connecting the acute angles of said triangular end pieces and
Claim 22
Dependent Claim 15 words
A VANE BETWEEN SAID END MEMBERS BELOW THE RIGHT ANGLES OF THE TRIANGULAR SUPPORT FRAMES,
Claim 23
Dependent Claim 15 words
A VANE BETWEEN SAID END MEMBERS BELOW THE RIGHT ANGLES OF THE TRIANGULAR SUPPORT FRAMES,
Claim 24
Dependent Claim 11 words
CROSS-RAILS CONNECTING THE ACUTE ANGLES OF SAID TRIANGULAR END PIECES AND
Claim 25
Dependent Claim 11 words
CROSS-RAILS CONNECTING THE ACUTE ANGLES OF SAID TRIANGULAR END PIECES AND
Claim 26
Dependent Claim 17 words
SIDE RAILS ALONG THE SIDES OF SAID TRIANGULAR END PIECES BETWEEN SAID RIDGE AND SAID CROSS RAILS,
Claim 27
Dependent Claim 17 words
SIDE RAILS ALONG THE SIDES OF SAID TRIANGULAR END PIECES BETWEEN SAID RIDGE AND SAID CROSS RAILS,
Claim 28
Dependent Claim 26 words
SAID BASE FURTHER HAVING AN AIR INLET INSERTED THROUGH ONE SAID MEMBER BELOW THE TRIANGULAR SUPPORT FRAME INTO THE SAID PLENUM SPACE. B. SAID COVER HAVING
Claim 29
Dependent Claim 26 words
SAID BASE FURTHER HAVING AN AIR INLET INSERTED THROUGH ONE SAID MEMBER BELOW THE TRIANGULAR SUPPORT FRAME INTO THE SAID PLENUM SPACE. B. SAID COVER HAVING
Claim 30
Dependent Claim 17 words
side rails along the sides of said triangular end pieces between said ridge and said cross rails,
Claim 31
Dependent Claim 17 words
side rails along the sides of said triangular end pieces between said ridge and said cross rails,
Claim 32
Dependent Claim 27 words
said base further having an air inlet inserted through one said end member below the triangular support frame into the said plenum space. B. said cover having
Claim 33
Dependent Claim 27 words
said base further having an air inlet inserted through one said end member below the triangular support frame into the said plenum space. B. said cover having
Claim 34
Dependent Claim 31 words
an inlet manifold connecting to said ridge, side rails and cross rail at one side of said ridge and inlet port for inlet of said exhaust stream in said inlet manifold,
Claim 35
Dependent Claim 31 words
an inlet manifold connecting to said ridge, side rails and cross rail at one side of said ridge and inlet port for inlet of said exhaust stream in said inlet manifold,
Claim 36
Dependent Claim 31 words
AN INLET MANIFOLD CONNECTING TO SAID RIDGE, SIDE RAILS AND CROSS RAIL AT ONE SIDE OF SAID RIDGE AMD INLET PORT FOR INLET OF SAID EXHAUST STREAM IN SAID INLET MANIFOLD,
Claim 37
Dependent Claim 31 words
AN INLET MANIFOLD CONNECTING TO SAID RIDGE, SIDE RAILS AND CROSS RAIL AT ONE SIDE OF SAID RIDGE AMD INLET PORT FOR INLET OF SAID EXHAUST STREAM IN SAID INLET MANIFOLD,
Claim 38
Dependent Claim 262 words
outlet manifold connecting to said ridge, side rails and cross rail at the other side of said ridge and outlet port in said outlet manifold for release of said exhaust stream from said outlet manifold with outlet port facing in the opposite direction to said inlet port and the two said ports being on substantially the same centerline, II. said container or canister further comprising a dual cross-flow refractory ceramic catalyst support of parallelepipedal form with longitudinal axis and square cross-section having all passageways at right angles to the said longitudinal axis, said passageways being in two directions mutually at right angles to each other, said catalyst support having catalyst thereon and being positioned within said casing with its square ends resting in the triangular support frames of said paraboloid end members of said base, its longitudinal axis parallel to the side walls of said base, a first longitudinal edge being positioned above said vane connecting said end members of said casing, two opposite Longitudinal edges being supported at the sides of said base and the fourth longitudinal edge and the ends being engaged and urged into position by said ridge, said side rails and said cross rails of said cover with inlet and outlet manifolds securely positioned above adjacent faces of said catalyst support, and III. said container or canister further comprising resilient mounting material between said catalyst support and the said ridge, said cross rails and said side rails of said cover of said canister at all lines of contact therebetween thereby preventing blowby of gases in said exhaust stream.
Claim 39
Dependent Claim 262 words
outlet manifold connecting to said ridge, side rails and cross rail at the other side of said ridge and outlet port in said outlet manifold for release of said exhaust stream from said outlet manifold with outlet port facing in the opposite direction to said inlet port and the two said ports being on substantially the same centerline, II. said container or canister further comprising a dual cross-flow refractory ceramic catalyst support of parallelepipedal form with longitudinal axis and square cross-section having all passageways at right angles to the said longitudinal axis, said passageways being in two directions mutually at right angles to each other, said catalyst support having catalyst thereon and being positioned within said casing with its square ends resting in the triangular support frames of said paraboloid end members of said base, its longitudinal axis parallel to the side walls of said base, a first longitudinal edge being positioned above said vane connecting said end members of said casing, two opposite Longitudinal edges being supported at the sides of said base and the fourth longitudinal edge and the ends being engaged and urged into position by said ridge, said side rails and said cross rails of said cover with inlet and outlet manifolds securely positioned above adjacent faces of said catalyst support, and III. said container or canister further comprising resilient mounting material between said catalyst support and the said ridge, said cross rails and said side rails of said cover of said canister at all lines of contact therebetween thereby preventing blowby of gases in said exhaust stream.
Claim 40
Dependent Claim 261 words
OUTLET MANIFOLD CONNECTING TO SAID RIDGE, SIDE RAILS AND CROSS RAIL AT THE OTHER SIDE OF SAID RIDGE AND OUTLET PORT IN SAID OUTLET MANIFOLD FOR RELEASE OF SAID EXHAUST STREAM FROM SAID OUTLET MANIFOLD WITH OUTLET PORT FACING IN THE OPPOSITE DIRECTION TO SAID INLET PORT AND THE TWO SAID PORTS BEING ON SUBSTANTIALLY THE SAME CENTERLINE, II. SAID CONTAINER OR CANISTER FURTHER COMPRISING A DUAL CROSS-FLOW REFRACTORY CERAMIC CATALYST SUPPORT OF PARALLELEPIPEDAL FORM WITH LONGITUDINAL AXIS AND SQUARE CROSS-SECTION HAVING ALL PASSAGEWAYS AT RIGHT ANGLES TO THE SAID LONGITUDINAL AXIS, SAID PASSAGEWAYS BEING IN TWO DIRECTIONS MUTUALLY AT RIGHT ANGLES TO EACH OTHER, SAID CATALYST SUPPORT HAVING CATALYST THEREON AND BEING POSITIONED WITHIN SAID CASING WITH ITS SQUARE ENDS RESTING IN THE TRIANGULAR SUPPORT FRAMES OF SAID PARABOLOID END MEMBERS OF SAID BASE, ITS LONGITUDINAL AXIS PARALLEL TO THE SIDE WALLS OF SAID BASE, A FIRST LONGITUDINAL EDGE BEING POSITIONED ABOVE SAID VANE CONNECTING SAID END MEMBERS OF SAID CASING, TWO OPPOSITE LONGITUDINAL EDGES BEING SUPPORTED AT THE SIDES OF SAID BASE AND THE FOURTH LONGITUDINAL EDGE AND THE END BEING ENGAGED AND URGED INTO POSITION BY SAID RIDGE, SAID SIDE RAILS AND SAID CROSS RAILS OF SAID COVER WITH INLET AND OUTLET MANIFOLDS SECURELY POSITIONED ABOVE ADJACENT FACES OF SAID CATALYST SUPPORT, AND III. SAID CONTAINER OR CANISTER FURTHER COMPRISING RESILIENT MOUNTING MATERIAL BETWEEN SAID CATALYST SUPPORT AND THE SAID RIDGE, SAID CROSS RAILS AND SAID RAILS OF SAID COVER OF SAID CANISTER AT ALL LINES OF CONTACT THEREBETWEEN THEREBY PREVENTING BLOWBY OF GASES IN SAID EXHAUST STREAM.
Claim 41
Dependent Claim 261 words
OUTLET MANIFOLD CONNECTING TO SAID RIDGE, SIDE RAILS AND CROSS RAIL AT THE OTHER SIDE OF SAID RIDGE AND OUTLET PORT IN SAID OUTLET MANIFOLD FOR RELEASE OF SAID EXHAUST STREAM FROM SAID OUTLET MANIFOLD WITH OUTLET PORT FACING IN THE OPPOSITE DIRECTION TO SAID INLET PORT AND THE TWO SAID PORTS BEING ON SUBSTANTIALLY THE SAME CENTERLINE, II. SAID CONTAINER OR CANISTER FURTHER COMPRISING A DUAL CROSS-FLOW REFRACTORY CERAMIC CATALYST SUPPORT OF PARALLELEPIPEDAL FORM WITH LONGITUDINAL AXIS AND SQUARE CROSS-SECTION HAVING ALL PASSAGEWAYS AT RIGHT ANGLES TO THE SAID LONGITUDINAL AXIS, SAID PASSAGEWAYS BEING IN TWO DIRECTIONS MUTUALLY AT RIGHT ANGLES TO EACH OTHER, SAID CATALYST SUPPORT HAVING CATALYST THEREON AND BEING POSITIONED WITHIN SAID CASING WITH ITS SQUARE ENDS RESTING IN THE TRIANGULAR SUPPORT FRAMES OF SAID PARABOLOID END MEMBERS OF SAID BASE, ITS LONGITUDINAL AXIS PARALLEL TO THE SIDE WALLS OF SAID BASE, A FIRST LONGITUDINAL EDGE BEING POSITIONED ABOVE SAID VANE CONNECTING SAID END MEMBERS OF SAID CASING, TWO OPPOSITE LONGITUDINAL EDGES BEING SUPPORTED AT THE SIDES OF SAID BASE AND THE FOURTH LONGITUDINAL EDGE AND THE END BEING ENGAGED AND URGED INTO POSITION BY SAID RIDGE, SAID SIDE RAILS AND SAID CROSS RAILS OF SAID COVER WITH INLET AND OUTLET MANIFOLDS SECURELY POSITIONED ABOVE ADJACENT FACES OF SAID CATALYST SUPPORT, AND III. SAID CONTAINER OR CANISTER FURTHER COMPRISING RESILIENT MOUNTING MATERIAL BETWEEN SAID CATALYST SUPPORT AND THE SAID RIDGE, SAID CROSS RAILS AND SAID RAILS OF SAID COVER OF SAID CANISTER AT ALL LINES OF CONTACT THEREBETWEEN THEREBY PREVENTING BLOWBY OF GASES IN SAID EXHAUST STREAM.

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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) 1978-12-29 1979-06-30 1979-12-30 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-12-29 1983-06-30 1983-12-30 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-12-29 1987-06-30 1987-12-30 $7700.00 Window Closed / Lapsed

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