US4094791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil filter with an upright filter pot
Assignee: Daimler Benz AG
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Filing: 1976-11-23
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Granted: 1978-06-13
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Expires: 1996-11-23
Abstract
Abstract A lubricating-oil filter with a filter pot arranged on a filter base, which is provided with an assembly opening adapted to be closed by a cover and in which a filter cartridge is adapted to be inserted by way of the assembly opening; a bolt retained at its upper end at the cover and at its lower end in the filter base is provided with an intermediate channel that connects a filtered-oil chamber of the filter pot with a base channel, itself connected with a filter base connection for the outflow of the filtered-oil; the fastening means for the cover are thereby structurally separate from the bolt and are arranged outside of the bolt axis while the mounting support for the upper end of the bolt is located at the bottom side of the cover and the mounting support for the lower end of the bolt is constructed as slide seat.
Inventors
- 👤 Ulrich Conrad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:03
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/14; B01D35/147; B01D29/00; B01D29/50; B01D29/52; B01D29/54; B01D35/153; B01D35/16; F; F01; F01M; F01M1/00; F01M1/10; F01M2001/105; F01M2001/1064; Y; Y10; Y10S; Y10S210/00; Y10S210/13
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
306 words
A lubricating-oil filter comprising: a. a filter base having a bore therein; b. a filter pot arranged generally upright at the filter base, said filter pot having a large inner space; c. a bolt retained at its lower end in the bore in the filter base and arranged centrally in the inner space of the filter pot; d. a first upper clean oil filter chamber centered around the bolt in the inner space of the filter pot; e. a second lower clean oil filter chamber centered around the bolt in the inner space of the filter pot; f. a first base channel means in the filter base for receiving oil emptied by way of the bore from the inner space of the filter pot from the first clean oil filter chamber, and from the second clean oil filter chamber; g. an intermediate channel means in the bolt for connecting the first clean oil filter chamber with the first base channel means; h. a first oil discharge channel means in the filter base for connecting the second clean oil filter chamber by way of the bore in the filter base with the first base channel means; i. a second base channel means for receiving oil emptied from the second clean oil filter chamber by way of the first oil discharge channel; j. a second oil discharge channel means in the filter base for connecting the inner space of the filter pot by way of the bore in the filter base with the first base channel means; whereby, upon removal of the lower end of the bolt from the bore in the filter base, oil is emptied from the inner space of the filter pot through the first and second oil discharge channels by way of the bore in the filter base into the first base channel means.
Claim 2
Dependent Claim
306 words
A lubricating-oil filter comprising: a. a filter base having a bore therein; b. a filter pot arranged generally upright at the filter base, said filter pot having a large inner space; c. a bolt retained at its lower end in the bore in the filter base and arranged centrally in the inner space of the filter pot; d. a first upper clean oil filter chamber centered around the bolt in the inner space of the filter pot; e. a second lower clean oil filter chamber centered around the bolt in the inner space of the filter pot; f. a first base channel means in the filter base for receiving oil emptied by way of the bore from the inner space of the filter pot from the first clean oil filter chamber, and from the second clean oil filter chamber; g. an intermediate channel means in the bolt for connecting the first clean oil filter chamber with the first base channel means; h. a first oil discharge channel means in the filter base for connecting the second clean oil filter chamber by way of the bore in the filter base with the first base channel means; i. a second base channel means for receiving oil emptied from the second clean oil filter chamber by way of the first oil discharge channel; j. a second oil discharge channel means in the filter base for connecting the inner space of the filter pot by way of the bore in the filter base with the first base channel means; whereby, upon removal of the lower end of the bolt from the bore in the filter base, oil is emptied from the inner space of the filter pot through the first and second oil discharge channels by way of the bore in the filter base into the first base channel means.
Claim 3
Dependent Claim
72 words
A lubricating-oil filter according to claim 1, further comprising a slide seat being arranged at the lower end of the bolt and including first means for sealing the bore in the filter base in order to prevent any oil in the second clean oil filter chamber and in the inner space of the filter pot from emptying by way of the bore in the filter base into the first base channel means.
Claim 4
Dependent Claim
31 words
A lubricating-oil filter according to claim 2, characterized in that the slide seat further includes a reduced section located within the area of the first and second oil discharge channel means.
Claim 5
Dependent Claim
40 words
A lubricating-oil filter according to claim 3, characterized in that the first and second oil discharge channel means each have discharge orifices that are offset in the direction of the longitudinal axis of the bolt with respect to one another.
Claim 6
Dependent Claim
38 words
A lubricating-oil filter according to claim 4, characterized in that the slide seat is sealingly interconnected between the discharge orifices of the first and second oil discharge channel means located in the reduced section of the slide seat.
Claim 7
Dependent Claim
75 words
A lubricating-oil filter according to claim 1, further comprising a cover for the filter pot; means for fastening the cover to the filter pot, said fastening means being separated structurally from the bolt; and support means for mounting the upper end of the bolt at the bottom side of the cover; whereby, upon fastening of the cover to the filter pot, the bolt is relieved of fastening forces and deformation of the cover is avoided.
Claim 8
Dependent Claim
36 words
A lubricating-oil filter according to claim 1, further comprising a filter cartridge arranged in the filter pot and adapted to be inserted into the filter pot by way of an upper opening in the filter pot.
Claim 9
Dependent Claim
40 words
A lubricating-oil filter according to claim 1, characterized in that the first and second oil discharge channel means each have discharge orifices that are offset in the direction of the longitudinal axis of the bolt with respect to one another.
Claim 10
Dependent Claim
51 words
A lubricating-oil filter according to claim 8, characterized in that the slide seat includes second means for sealing the bore in the filter base, said second means being sealingly interconnected between the discharge orifices of the first and second oil discharge channel means located in the bore in the filter base.
Claim 11
Dependent Claim
21 words
A filter according to claim 6, characterized in that the fastening means of the cover are arranged at the cover edge.
Claim 12
Dependent Claim
26 words
A filter according to claim 10, characterized in that the fastening means of the cover are arranged at a cover flange disposed along the cover edge.
Claim 13
Dependent Claim
29 words
A filter according to claim 10, characterized in that the upper end of the bolt is inserted substantially immovably into an aperture at the bottom side of the cover.
Claim 14
Dependent Claim
29 words
A filter according to claim 6, characterized in that the upper end of the bolt is inserted substantially immovably into an aperture at the bottom side of the cover.
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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) | 1981-06-12 | 1981-12-12 | 1982-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-12 | 1985-12-12 | 1986-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-12 | 1989-12-12 | 1990-06-13 | $7700.00 | Window Closed / Lapsed |