US3776384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Replaceable element coolant filter
Assignee: Tenneco Inc
•
Filing: 1972-07-12
•
Granted: 1973-12-04
•
Expires: 1992-07-12
Abstract
Abstract A pleated paper filter element is adapted for use in an existing water filter housing for internal combustion engine cooling systems by means of a grommet that serves to seat the element and seal it around the housing outlet.
Inventors
- 👤 R Offer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:10
CPC Classifications
B; B01; B01D; B01D37/00; B01D37/02; B01D37/025; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/21; F; F01; F01P; F01P11/00; F01P11/06; F01P2011/061; F01P2011/066; F01P2011/068
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
100 words
In a coolant filter for the cooling system of an internal combustion engine, said filter having a housing with an outlet passage and a surface around the inlet end of the outlet passage, a filter element comprising an annulus of pleated paper and end caps secured to the opposite ends of the paper and defining an outlet chamber inside the annulus for cOolant filtered by passage through the paper, and a resilient outlet tube for said outlet chamber mounted on and supported by one of said end caps and seated on said furface in sealed communication with the outlet passage.
Claim 2
Dependent Claim
100 words
In a coolant filter for the cooling system of an internal combustion engine, said filter having a housing with an outlet passage and a surface around the inlet end of the outlet passage, a filter element comprising an annulus of pleated paper and end caps secured to the opposite ends of the paper and defining an outlet chamber inside the annulus for cOolant filtered by passage through the paper, and a resilient outlet tube for said outlet chamber mounted on and supported by one of said end caps and seated on said furface in sealed communication with the outlet passage.
Claim 3
Dependent Claim
56 words
A filter as set forth in claim 1 wherein said one end cap has an outlet opening, said tube has a plurality of annular recesses on the outer surfe of a size to receive the edge of said end cap opening whereby the tube may be mounted to project different axial distances from the end cap.
Claim 4
Dependent Claim
28 words
A filter as set forth in claim 1 wherein said one end cap has a recess formed therein and said outlet tube is press fitted in said recess.
Claim 5
Dependent Claim
45 words
A coolant filter element comprising an annulus of filter material, end plates secured to opposite end faces of the annulus, and a rubber like outlet tube for coolant passing through the annulus attached to one of the end plates and projecting away from the annulus.
Claim 6
Dependent Claim
45 words
A coolant filter element comprising an annulus of filter material, end plates secured to opposite end faces of the annulus, and a rubber like outlet tube for coolant passing through the annulus attached to one of the end plates and projecting away from the annulus.
Claim 7
Dependent Claim
20 words
A filter element as set forth in claim 4 including a bag containing coolant conditioner located inside of said annulus.
Claim 8
Dependent Claim
19 words
A filter element as set forth in claim 4 including a notch means securing the tube to the plate.
Claim 9
Dependent Claim
19 words
A filter element as set forth in claim 4 including press fit means securing the tube to the plate.
References Cited (Backward Citations)
US1830742A
Cited
US2696915A
Cited
US3058592A
Cited
US2995250A
Cited
US3043436A
Cited
US3357563A
Cited
US3516549A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |