US3966419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic converter having monolith with mica support means therefor
Assignee: Motors Liquidation Co
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Filing: 1974-11-18
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Granted: 1976-06-29
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Expires: 1994-11-18
Abstract
Abstract Spacers formed from mica are disposed in a catalytic converter between a monolithic ceramic catalyst element and a metal converter housing. As the converter warms, the spacers increase the compressive loading on the catalyst element to support and immobilize it within the housing.
Inventors
- 👤 Rodger E. Bloomfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:57
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/08; F01N13/10; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/28; F01N3/2839; F01N3/2853; F01N3/2867; F01N2350/00; F01N2350/02; F01N2350/04; F01N2350/06; Y; Y10; Y10S; Y10S248/00; Y10S248/901
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
84 words
A catalytic converter comprising a housing, a monolithic catalyst element disposed within said housing, said catalyst element having a rate of thermal expansion less than said housing, and support means disposed between said catalyst element and said housing for providing supporting and immobilizing forces therebetween, said support means being formed of mica having a rate of thermal expansion greater than said housing to thereby provide increasing supporting and immobilizing forces between said catalyst element and said housing as the temperature of said converter increases.
Claim 2
Dependent Claim
84 words
A catalytic converter comprising a housing, a monolithic catalyst element disposed within said housing, said catalyst element having a rate of thermal expansion less than said housing, and support means disposed between said catalyst element and said housing for providing supporting and immobilizing forces therebetween, said support means being formed of mica having a rate of thermal expansion greater than said housing to thereby provide increasing supporting and immobilizing forces between said catalyst element and said housing as the temperature of said converter increases.
Claim 3
Dependent Claim
124 words
A catalytic converter comprising a housing, a monolithic catalyst element disposed within said housing, said catalyst element having a rate of thermal expansion less than said housing, and support means disposed between said catalyst element and said housing for providing supporting and immobilizing forces therebetween, said support means being formed of mica having a rate of thermal expansion greater than said housing to thereby provide increasing supporting and immobilizing forces between said catalyst element and said housing as the temperature of said converter increases and further having the property of creating residual expansion forces after being initially heated above a certain temperature to thereby support and immobilize said catalyst element within said housing throughout the range of temperatures to which said converter is subjected.
Claim 4
Dependent Claim
124 words
A catalytic converter comprising a housing, a monolithic catalyst element disposed within said housing, said catalyst element having a rate of thermal expansion less than said housing, and support means disposed between said catalyst element and said housing for providing supporting and immobilizing forces therebetween, said support means being formed of mica having a rate of thermal expansion greater than said housing to thereby provide increasing supporting and immobilizing forces between said catalyst element and said housing as the temperature of said converter increases and further having the property of creating residual expansion forces after being initially heated above a certain temperature to thereby support and immobilize said catalyst element within said housing throughout the range of temperatures to which said converter is subjected.
Claim 5
Dependent Claim
125 words
A catalytic converter comprising a housing, a monolithic catalyst element disposed within said housing, said catalyst element having a rate of thermal expansion less than said housing, and support means disposed between said catalyst element and said housing for providing supporting and immobilizing forces therebetween, said support means being formed of phlogopite mica having a rate of thermal expansion greater than said housing to thereby provide increasing supporting and immoblizing forces between said catalyst element and said housing as the temperature of said converter increases and further having the property of creating residual expansion forces after being initially heated above a certain temperature to thereby support and immobilize said catalyst element within said housing throughout the range of temperatures to which said converter is subjected.
Claim 6
Dependent Claim
125 words
A catalytic converter comprising a housing, a monolithic catalyst element disposed within said housing, said catalyst element having a rate of thermal expansion less than said housing, and support means disposed between said catalyst element and said housing for providing supporting and immobilizing forces therebetween, said support means being formed of phlogopite mica having a rate of thermal expansion greater than said housing to thereby provide increasing supporting and immoblizing forces between said catalyst element and said housing as the temperature of said converter increases and further having the property of creating residual expansion forces after being initially heated above a certain temperature to thereby support and immobilize said catalyst element within said housing throughout the range of temperatures to which said converter is subjected.
Claim 7
Dependent Claim
139 words
A catalytic converter comprising a housing, a monolithic catalyst element disposed within said housing, said catalyst element having a rate of thermal expansion less than said housing, and support means disposed between said catalyst element and said housing for providing supporting and immobilizing forces therebetween, said support means being formed of heater plate material comprising large flakes of muscovite mica bonded together with an organic binder and having a rate of thermal expansion greater than said housing to thereby provide increasing supporting and immobilizing forces between said catalyst element and said housing as the temperature of said converter increases and further having the property of creating residual expansion forces after being initially heated above a certain temperature to thereby support and immobilize said catalyst element within said housing throughout the range of temperatures to which said converter is subjected.
Claim 8
Dependent Claim
139 words
A catalytic converter comprising a housing, a monolithic catalyst element disposed within said housing, said catalyst element having a rate of thermal expansion less than said housing, and support means disposed between said catalyst element and said housing for providing supporting and immobilizing forces therebetween, said support means being formed of heater plate material comprising large flakes of muscovite mica bonded together with an organic binder and having a rate of thermal expansion greater than said housing to thereby provide increasing supporting and immobilizing forces between said catalyst element and said housing as the temperature of said converter increases and further having the property of creating residual expansion forces after being initially heated above a certain temperature to thereby support and immobilize said catalyst element within said housing throughout the range of temperatures to which said converter is subjected.
Claim 9
Dependent Claim
89 words
A catalytic converter comprising a cylindrical housing, a cylindrical monolithic catalyst element coaxially disposed within said housing, said catalyst element having a rate of thermal expansion less than said housing, and support means disposed circumferentially about said catalyst element within said housing for providing radial supporting and immobilizing forces therebetween, said support means being formed of mica having a rate of thermal expansion greater than said housing to thereby provide increasing supporting and immobilizing forces between said catalyst element and said housing as the temperature of said converter increases.
Claim 10
Dependent Claim
89 words
A catalytic converter comprising a cylindrical housing, a cylindrical monolithic catalyst element coaxially disposed within said housing, said catalyst element having a rate of thermal expansion less than said housing, and support means disposed circumferentially about said catalyst element within said housing for providing radial supporting and immobilizing forces therebetween, said support means being formed of mica having a rate of thermal expansion greater than said housing to thereby provide increasing supporting and immobilizing forces between said catalyst element and said housing as the temperature of said converter increases.
Claim 11
Dependent Claim
104 words
A catalytic converter comprising a housing including end members, a monolithic catalyst element disposed within said housing between said end members, said catalyst element having a rate of thermal expansion less than said housing, and support means disposed at one end of said catalyst element between said catalyst element and the adjacent end member of said housing for providing supporting and immobilizing forces therebetween, said support means being formed of mica having a rate of thermal expansion greater than said housing to thereby provide increasing supporting and immobilizing forces between said catalyst element and said end members as the temperature of said converter increases.
Claim 12
Dependent Claim
104 words
A catalytic converter comprising a housing including end members, a monolithic catalyst element disposed within said housing between said end members, said catalyst element having a rate of thermal expansion less than said housing, and support means disposed at one end of said catalyst element between said catalyst element and the adjacent end member of said housing for providing supporting and immobilizing forces therebetween, said support means being formed of mica having a rate of thermal expansion greater than said housing to thereby provide increasing supporting and immobilizing forces between said catalyst element and said end members as the temperature of said converter increases.
Claim 13
Dependent Claim
175 words
A catalytic converter comprising a housing including end members and a cylindrical shell, a cylindrical monolithic catalyst element disposed between said end members and within said shell, said catalyst element having a rate of thermal expansion less than said housing, said catalyst element including means defining an annular groove opening axially toward one of said end members and radially toward said shell, and a ring disposed in said groove for providing radial supporting and immbolizing forces between said catalyst element and said shell and axial supporting and immobilizing forces between said catalyst element and said end members, said ring being formed of mica having a rate of thermal expansion greater than said housing to thereby provide increasing supporting and immobilizing forces between said catalyst element and said housing as the temperature of said converter increases and further having the property of creating residual expansion forces after being initially heated above a certain temperature to thereby support and immobilize said catalyst element within said housing throughout the range of temperatures to which said converter is subjected.
Claim 14
Dependent Claim
175 words
A catalytic converter comprising a housing including end members and a cylindrical shell, a cylindrical monolithic catalyst element disposed between said end members and within said shell, said catalyst element having a rate of thermal expansion less than said housing, said catalyst element including means defining an annular groove opening axially toward one of said end members and radially toward said shell, and a ring disposed in said groove for providing radial supporting and immbolizing forces between said catalyst element and said shell and axial supporting and immobilizing forces between said catalyst element and said end members, said ring being formed of mica having a rate of thermal expansion greater than said housing to thereby provide increasing supporting and immobilizing forces between said catalyst element and said housing as the temperature of said converter increases and further having the property of creating residual expansion forces after being initially heated above a certain temperature to thereby support and immobilize said catalyst element within said housing throughout the range of temperatures to which said converter is subjected.
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) | 1979-06-29 | 1979-12-29 | 1980-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-29 | 1983-12-29 | 1984-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-29 | 1987-12-29 | 1988-06-29 | $7700.00 | Window Closed / Lapsed |