US4369110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil filter for use on internal combustion engines
Assignee: SPALDING MICHAEL J MD NASHVILLE TENNESSEE
•
Filing: 1981-08-13
•
Granted: 1983-01-18
•
Expires: 2001-08-13
Abstract
Abstract An oil filter for use on internal combustion engines, the filter having a body portion with an interior recess opening therein and with a threaded opening at the recessed end to receive the attachment of a filter cartridge, the body having an oil inlet, an oil outlet and a vent opening, a needle member extending from the body portion centrally of the end adapted to receive the attachment of a filter cartridge, the needle portion being connected with the oil inlet, the filter cartridge having packing material therein, the cartridge being threadably secured to the body so that the needle extends through the packing and, when the filter cartridge is in place, the end of needle is adjacent the cartridge interior bottom, oil passing into the filter flowing through the needle and being discharged within the cartridge and flowing through the packing material and into the body opening and out through the oil outlet, the space between the filter cartridge and the body interior being separated by a plate having steps or ledges with an opening so that oil flowing through the filter material in the cartridge flows through the openings and down over the steps and ledges affording opportunity for the escape of volatile components, any solid contaminants in the oil being captured by the packing in the filter cartridge.
Inventors
- 👤 Robert A. Picek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:28
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/18; B01D35/185; B01D27/00; B01D27/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
213 words
An improved oil reconditioning device for use on internal combustion engines, comprising: a body having an interior recess having means at one end to receive the attachment of a filter cartridge thereto, the body having an oil inlet and an oil outlet therein; a needle member extending from said body portion centrally of said one end, the needle member being in communication with said oil inlet; a filter cartridge having an open top end and a closed bottom end and having packing material homogeneously distributed across the full cross-sectional interior thereof, the cartridge being secured to said body so that the open top end is in sealed engagement with said one end of said body; means of removably attaching said filter cartridge to said body, the needle member extending through and penetrating said packing as the cartridge is attached so that the outer end of the needle member is adjacent the cartridge interior bottom, the outer cylindrical surface of said needle member sealably engaging said packing material, whereby oil flows into said body oil inlet, through said needle member and into said cartridge adjacent the interior bottom thereof, through said packing and back into said body interior opening and out through said body oil outlet, solid contaminants being captured by said packing material.
Claim 2
Dependent Claim
213 words
An improved oil reconditioning device for use on internal combustion engines, comprising: a body having an interior recess having means at one end to receive the attachment of a filter cartridge thereto, the body having an oil inlet and an oil outlet therein; a needle member extending from said body portion centrally of said one end, the needle member being in communication with said oil inlet; a filter cartridge having an open top end and a closed bottom end and having packing material homogeneously distributed across the full cross-sectional interior thereof, the cartridge being secured to said body so that the open top end is in sealed engagement with said one end of said body; means of removably attaching said filter cartridge to said body, the needle member extending through and penetrating said packing as the cartridge is attached so that the outer end of the needle member is adjacent the cartridge interior bottom, the outer cylindrical surface of said needle member sealably engaging said packing material, whereby oil flows into said body oil inlet, through said needle member and into said cartridge adjacent the interior bottom thereof, through said packing and back into said body interior opening and out through said body oil outlet, solid contaminants being captured by said packing material.
Claim 3
Dependent Claim
51 words
An improved oil filter for use in an internal combustion engine according to claim 1 including: a stepped plate received in said body recess separating the recess from said filter cartridge, the plate having a plurality of small diameter openings through which oil flows from said cartridge into the body recess.
Claim 4
Dependent Claim
24 words
An improved oil filter for use on an internal combustion engine according to claim 1 including: an electric heating element in said body recess.
Claim 5
Dependent Claim
140 words
An improved oil filter for use on an internal combustion engine according to claim 1 wherein said body oil inlet opening is threaded, wherein said stepped plate has a central opening therethrough, and wherein said filter cartridge has a central internally threaded opening in the top end, including: a pipe threaded at each end, the first end being received in said body oil inlet to receive the inlet flow of oil therethrough, the stepped plate being received on the pipe and the filter cartridge being threaded onto the pipe second end whereby the filter cartridge is held in sealed engagement with the body, and a nut received on the pipe between the filter cartridge and the stepped plate whereby the stepped plate is held in secure engagement with the body, said needle member extending co-axially from the pipe second end.
Claim 6
Dependent Claim
85 words
An improved oil filter for use on an internal combustion engine according to claim 1 including a bottom plate positioned in said filter cartridge adjacent the interior bottom and providing a space between the plate and the cartridge bottom, the plate having a central opening therein to receive the outer end of said needle member, said packing being between said plate and the cartridge top end, the space between the plate and the cartridge bottom end being free of packing providing an oil flow passageway.
Claim 7
Dependent Claim
68 words
An improved oil filter for use on an internal combustion engine according to claim 1 wherein the filter is oriented to operate in a vertical position with said body on top and said filter cartridge on bottom and wherein said stepped plate is configured to provide a plurality of coaxial steps of increasing diameter and lower elevation, said openings in the plate being spaced around an upper step.
Claim 8
Dependent Claim
71 words
An improved oil filter for use in an internal combustion engine according to claim 1 wherein the filter is oriented to operate in a horizontal position with said filter cartridge extending horizontally from said body and wherein said stepped plate is configured to provide a plurality of horizontally extending shelves, each lower shelf extending forwardly into said body portion interior opening, said openings in the plate being in an upper shelf.
Claim 9
Dependent Claim
33 words
An improved oil reconditioning device according to claim 1 wherein said body has a vent opening therein whereby volatile components released by the oil while in said body passes out through said vent.
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) | 1986-01-17 | 1986-07-19 | 1987-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-17 | 1990-07-19 | 1991-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-17 | 1994-07-19 | 1995-01-18 | $7700.00 | Window Closed / Lapsed |