US3303003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for purifying exhaust gases of internal combustion engines
Assignee: WR Grace and Co
•
Filing: 1963-03-11
•
Granted: 1967-02-07
•
Expires: 1983-03-11
Abstract
No abstract record available.
Inventors
- 👤 Austin A Zimmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:55
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/18; F01N3/20; F01N3/2006; F01N3/2046; F01N3/22; F01N3/24; F01N3/30; F01N3/32; F01N2270/00; F01N2270/02; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A COMBINATION OF APPARATUS FOR AUTOMATICALLY CONTROLLING THE TEMPERATURE OF A CATALYTIC EXHAUST PURIFIER COMPRISING, (A) MEANS FOR PURIFYING EXHAUST GASES INCLUDING A HOUSING CONTAINING AN OXIDATION CATALYST, (B) INLET AND OUTLET OPENINGS WITHIN SAID PURIFYING MEANS FOR THE EXHAUST GASES TO ENTER AND EXIT THEREFROM, (C) A TEMPERATURE SENSING MEANS POSITIONED WITHIN SAID PURIFYING MEANS, (D) VALVE MEANS ASSOCIATED WITH SAID SENSING MEANS AND POSITIONED WITHIN A CONDUIT CONNECTING A MANIFOLD SECTION OF AN INTERNAL COMBUSTION ENGINE WITH A PUMP ACTUATING MEANS CONNECTED TO A VARIABLE SPEED BELT DRIVEN SPRING LOADED AIR PUMP PIVOTALLY ATTACHED TO SAID ENGINE, (E) AND A SECOND CONDUIT CONNECTING SAID PUMP MEANS WITH SAID EXHAUST INLET OPENING.
Claim 2
Dependent Claim
113 words
A COMBINATION OF APPARATUS FOR AUTOMATICALLY CONTROLLING THE TEMPERATURE OF A CATALYTIC EXHAUST PURIFIER COMPRISING, (A) MEANS FOR PURIFYING EXHAUST GASES INCLUDING A HOUSING CONTAINING AN OXIDATION CATALYST, (B) INLET AND OUTLET OPENINGS WITHIN SAID PURIFYING MEANS FOR THE EXHAUST GASES TO ENTER AND EXIT THEREFROM, (C) A TEMPERATURE SENSING MEANS POSITIONED WITHIN SAID PURIFYING MEANS, (D) VALVE MEANS ASSOCIATED WITH SAID SENSING MEANS AND POSITIONED WITHIN A CONDUIT CONNECTING A MANIFOLD SECTION OF AN INTERNAL COMBUSTION ENGINE WITH A PUMP ACTUATING MEANS CONNECTED TO A VARIABLE SPEED BELT DRIVEN SPRING LOADED AIR PUMP PIVOTALLY ATTACHED TO SAID ENGINE, (E) AND A SECOND CONDUIT CONNECTING SAID PUMP MEANS WITH SAID EXHAUST INLET OPENING.
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) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |