US3912633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil filter with pull tab drain
Assignee: Individual
•
Filing: 1974-09-09
•
Granted: 1975-10-14
•
Expires: 1994-09-09
Abstract
Abstract An oil filter for use with an internal combustion engine or other type of power source and including a tear strip integrally formed therein with an attached tab or ring which may be grasped and pulled to tear the strip from the oil filter thus allowing the oil contained therein to be selectively drained prior to removal of the oil filter. The tear strip may be located on the side or may be located on the dome or top portion of the oil filter.
Inventors
- 👤 Arthur Delaney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:49
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/16; B01D27/00; B01D27/08; B01D35/30; F; F01; F01M; F01M1/00; F01M1/10; F01M11/00; F01M11/04; Y; Y10; Y10S; Y10S210/00; Y10S210/17
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
181 words
IN COMBINATION WITH AN ENGINE HAVING AN OIL PUMP AND PASSAGES THROUGH THE ENGINE FOR THE CIRCULATION OF LUBRICATING OIL THERETHROUGH, INLET AND OUTLET PASSAGE MEANS FOR THE INTRODUCTION AND REMOVAL OF THE LUBRICATING OIL FROM SAID ENGINE, A FILTER HOUSING HAVING WALLS AND MOUNTING MEANS FOR ATTACHING SAID FILTER HOUSING TO THE ENGINE, SAID HOUSING ALSO HAVING INLET AND OUTLET MEANS THEREINTO IN FLUID COMMUNICATION WITH SAID ENGINE MOUNTED INLET AND OUTLET PASSAGE MEANS, FILTER MEDIA WITHIN SAID HOUSING LOCATED BETWEEN SAID INLET AND SAID OUTLET MEANS OF SAID HOUSING, DRAINAGE MEANS IN ONE OF SAID WALLS OF SAID HOUSING CONSTRUCTED AND ARRANGED FOR THE DRAINAGE OF OIL THEREFROM, THE IMPROVEMENT COMPRISING SAID DRAINAGE MEANS HAVING A SCORED PORTION IN ONE WALL OF SAID HOUSING, SAID SCORED PORTION PROVIDING A WEAKENED TEAR STRIP AREA CAPABLE OF BEING BROKEN TO FORM A DRAINAGE OPENING THROUGH SAID ONE WALL OF SAID HOUSING, TAB MEANS INCLUDING MEANS CONNECTED TO SAID WEAKENED TEAR STRIP AREA FOR SEPARATING SAID AREA FROM THE HOUSING ALONG SAID SCORED PORTION WHEREBY OIL MAY BE DRAINED FROM SAID HOUSING.
Claim 2
Dependent Claim
181 words
IN COMBINATION WITH AN ENGINE HAVING AN OIL PUMP AND PASSAGES THROUGH THE ENGINE FOR THE CIRCULATION OF LUBRICATING OIL THERETHROUGH, INLET AND OUTLET PASSAGE MEANS FOR THE INTRODUCTION AND REMOVAL OF THE LUBRICATING OIL FROM SAID ENGINE, A FILTER HOUSING HAVING WALLS AND MOUNTING MEANS FOR ATTACHING SAID FILTER HOUSING TO THE ENGINE, SAID HOUSING ALSO HAVING INLET AND OUTLET MEANS THEREINTO IN FLUID COMMUNICATION WITH SAID ENGINE MOUNTED INLET AND OUTLET PASSAGE MEANS, FILTER MEDIA WITHIN SAID HOUSING LOCATED BETWEEN SAID INLET AND SAID OUTLET MEANS OF SAID HOUSING, DRAINAGE MEANS IN ONE OF SAID WALLS OF SAID HOUSING CONSTRUCTED AND ARRANGED FOR THE DRAINAGE OF OIL THEREFROM, THE IMPROVEMENT COMPRISING SAID DRAINAGE MEANS HAVING A SCORED PORTION IN ONE WALL OF SAID HOUSING, SAID SCORED PORTION PROVIDING A WEAKENED TEAR STRIP AREA CAPABLE OF BEING BROKEN TO FORM A DRAINAGE OPENING THROUGH SAID ONE WALL OF SAID HOUSING, TAB MEANS INCLUDING MEANS CONNECTED TO SAID WEAKENED TEAR STRIP AREA FOR SEPARATING SAID AREA FROM THE HOUSING ALONG SAID SCORED PORTION WHEREBY OIL MAY BE DRAINED FROM SAID HOUSING.
Claim 3
Dependent Claim
26 words
The combination of claim 1 wherein said walls comprise a cylindrical wall and an end wall wherein: said tear strip is formed in said end wall.
Claim 4
Dependent Claim
15 words
The combination of claim 1, wherein: said tear strip is located in the cylindrical wall.
Claim 5
Dependent Claim
33 words
The combination of claim 1, wherein said tab means comprises: a ring member having a finger opening and leverage means responsive to finger movement to provide said drainage opening in the filter housing.
Claim 6
Dependent Claim
33 words
The combination of claim 1, wherein said scored portion comprises: a plurality of angles comprising a triangle, and further, said tab means having means attached adjacent one of the angles of the triangle.
Claim 7
Dependent Claim
37 words
The combination of claim 1, wherein said tab means includes: pivoting extensions engageable with said filter housing when the tab portion is lifted to thereby provide a force multiplying lever for removing the weakened tear strip area.
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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) | 1978-10-13 | 1979-04-14 | 1979-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-13 | 1983-04-14 | 1983-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-13 | 1987-04-14 | 1987-10-14 | $7700.00 | Window Closed / Lapsed |