Patent US4459208A successfully refreshed from Google Patents.
US4459208A
Expired / Lapsed
US
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Filter system for a power transmitting device
Assignee: ArvinMeritor Technology LLC
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Filing: 1982-01-13
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Granted: 1984-07-10
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Expires: 2002-01-13
Abstract
Abstract A filter system is for a power transmitting device which has an oil pump to draw lubricating oil through an oil passage from an oil sump in the housing thereof. A chamber is provided in the housing to intersect the oil passage and is partially below the normal level of the lubricating oil in the oil sump. A filter device is installed in the chamber for filtering the lubricating oil. An access cover for the chamber is above the normal level of lubricating oil to allow installation, removal and inspection of the filter and verification of the lubricating oil level.
Inventors
- 👤 Robert W. Lemon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:05
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/02; B01D29/00; B01D29/11; B01D29/31; B01D29/35; B01D35/30; F; F16; F16H; F16H57/00; F16H57/04; F16H57/0402; F16H57/0404; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19991
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
174 words
A filter system for a power transmitting device of the type which includes a housing, an oil sump in a lower region of said housing for retaining a supply of lubricating oil which is to be maintained at a predetermined level when said power transmitting device is not in use, oil pumping means, and an internal oil passage from said oil sump to an inlet of said oil pumping means, said filter system including: a chamber in said housing intersecting said oil passage to become a part thereof, said chamber being located at least partially below said predetermined level; filter means removable installed in said chamber for filtering said lubricating oil flowing through said oil passage; said chamber having an opening in said housing to allow access thereto, said opening being above said predetermined level to allow installation and removal of said filter means, verification of said lubricating oil at said predetermined level and supply of said lubricating oil to said predetermined level if needed; and removable means for sealed closure of said opening.
Claim 2
Dependent Claim
174 words
A filter system for a power transmitting device of the type which includes a housing, an oil sump in a lower region of said housing for retaining a supply of lubricating oil which is to be maintained at a predetermined level when said power transmitting device is not in use, oil pumping means, and an internal oil passage from said oil sump to an inlet of said oil pumping means, said filter system including: a chamber in said housing intersecting said oil passage to become a part thereof, said chamber being located at least partially below said predetermined level; filter means removable installed in said chamber for filtering said lubricating oil flowing through said oil passage; said chamber having an opening in said housing to allow access thereto, said opening being above said predetermined level to allow installation and removal of said filter means, verification of said lubricating oil at said predetermined level and supply of said lubricating oil to said predetermined level if needed; and removable means for sealed closure of said opening.
Claim 3
Dependent Claim
33 words
The filter system as set forth in claim 1, wherein said filter means is a tubular filter element and said chamber is generally cylindrical and extends downwardly into said housing from said opening.
Claim 4
Dependent Claim
29 words
The filter system as set forth in claim 2, wherein said lubricating oil flows into an open end of said filter element and outwardly through a tubular wall thereof.
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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) | 1987-07-10 | 1988-01-09 | 1988-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-10 | 1992-01-09 | 1992-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-10 | 1996-01-09 | 1996-07-10 | $7700.00 | Window Closed / Lapsed |