US3722691A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter for removing particulate contaminants from fluids
Assignee: Individual
•
Filing: 1971-03-03
•
Granted: 1973-03-27
•
Expires: 1991-03-03
Abstract
Abstract A filter for removing particulate contaminants from fluids such as oil comprising a filter element in a generally cylindrical, thin walled plastic housing having a base threadably engaged to fluid inlet and outlet means, commonly known as a spin-on filter in which the housing is provided with fluid flow interruption means for enhancing the deposition and collection of particulate debris said means including internal, sharp angled convolutions, radial or helical, said means also including fluid inlet passages in the base oriented at an angle to the longitudinal axis of the housing.
Inventors
- 👤 P Francois
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:10
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/18; B01D27/00; B01D27/005; B01D27/08; B01D27/10; B01D27/106; B01D2201/00; B01D2201/24; F; F01; F01M; F01M1/00; F01M1/10; F01M2001/105; F01M2001/1092; F01M13/00; F01M13/04; F01M2013/0422; F01M2013/0433; F01M2013/0438; Y; Y10; Y10S; Y10S210/00; Y10S210/17
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
112 words
A filter for removing particulate contaminants from fluids comprising, a. a hollow housing closed at one end, b. a base on the housing closing the opposite end, the base having transversely extending fluid inlet means and fluid outlet means, c. filter means in the housing in intercepting relationship to the flow of fluid in the housing between the said inlet and outlet means in the base, d. a plurality of angular, relatively deep, generally radially disposed grooves on the internal surface of at least a substantial portion of the side wall of the housing, and e. the filter means being spaced away from the side wall of the housing opposite said grooves.
Claim 2
Dependent Claim
112 words
A filter for removing particulate contaminants from fluids comprising, a. a hollow housing closed at one end, b. a base on the housing closing the opposite end, the base having transversely extending fluid inlet means and fluid outlet means, c. filter means in the housing in intercepting relationship to the flow of fluid in the housing between the said inlet and outlet means in the base, d. a plurality of angular, relatively deep, generally radially disposed grooves on the internal surface of at least a substantial portion of the side wall of the housing, and e. the filter means being spaced away from the side wall of the housing opposite said grooves.
Claim 3
Dependent Claim
68 words
A filter for removing particulate contaminants from fluids comprising, a. the structure in accordance with claim 1 and, b. a side wall on the filter means immediately opposite the said grooves on the internal surface of the side wall of the housing, c. at least a portion of said fluid flow passing inwardly through said side wall on the filter means directly from the proximity of said grooves.
Claim 4
Dependent Claim
132 words
A filter for removing particulate contaminants from fluids comprising, a. the structure in accordance with claim 1 in which b. the filter is provided with an internal passage extending from end to end thereof which communicate with said outlet means in the base, c. fluid flow blocking means at the end of the passage distal to the base, d. fluid flow blocking means at the end of the filter means proximal to the base and intermediate the inlet and outlet means, e. a side wall on the filter means immediately opposite the said grooves on the internal surface of the side wall of the housing, f. all of said fluid flow passing inwardly through said side wall on the filter means directly from the proximity of the side wall of said housing.
Claim 5
Dependent Claim
35 words
A filter for removing particulate contaminants from fluids comprising, a. the structure in accordance with claim 1 in which b. the sidE wall of said housing is of generally uniform thickness at said internal grooves.
Claim 6
Dependent Claim
27 words
A filter for removing particulate contaminants from fluids comprising, a. the structure in accordance with claim 1 in which, b. the said housing is fabricated from plastic.
Claim 7
Dependent Claim
27 words
A filter for removing particulate contaminants from fluids comprising, a. the structure in accordance with claim 4 in which, b. the said housing is fabricated from plastic.
Claim 8
Dependent Claim
44 words
A filter for removing particulate contaminants from fluids comprising, a. the structure in accordance with claim 2 in which, b. the side wall of said housing is of generally uniform thickness at said internal grooves, and c. the said housing is fabricated from plastic.
Claim 9
Dependent Claim
43 words
A filter for removing particulate contaminants from fluids comprising, a. the structure in accordance with claim 3 in which b. the side wall of said housing is of generally uniform thickness at said internal grooves, and c. the housing is fabricated from plastic.
Claim 10
Dependent Claim
39 words
A filter for removing particulate contaminants from fluids comprising, a. the structure in accordance with claim 7 and, b. a plurality of radial fins on the external surface of the housing extending in the direction of the ends thereof.
Claim 11
Dependent Claim
70 words
A filter for removing particulate contaminants from fluids comprising, a. the structure in accordance with claim 1 in which, b. the housing is fabricated of plastic, and c. the said interrupting means are a plurality of conforming internal and external radial convolutions in the wall of the housing, and d. a plurality of radial fins on the external wall of the housing extending in the direction of the ends thereof.
Claim 12
Dependent Claim
36 words
A filter for removing particulate contaminants from fluids comprising, a. the structure in accordance with claim 10 in which, b. the fins are just sufficiently rigid to prevent undesired deformation of the housing at operating temperatures.
Claim 13
Dependent Claim
45 words
A filter for removing particulate contaminants from fluids comprising, a. the structure in accordance with claim 10 in which b. the said radial convolutions are generally parallel to the ends of the housing and the fins are generally perpendicular to the ends of the housing.
Claim 14
Dependent Claim
39 words
A filter for removing particulate contaminants from fluids comprising, a. the structure in accordance with claim 1 in which, b. the inlet means are oriented at an angle to the axis of the housing extending between the ends thereof.
Claim 15
Dependent Claim
57 words
A filter for removing particulate contaminants from fluids comprising, a. the structure in accordance with claim 6 in which, b. the housing is fabricated from two shells joined together intermediate the ends of the housing, each shell having a generally annular, radially extending integral rib, the respective ribs being joined to each other to form the housing.
Claim 16
Dependent Claim
57 words
A filter for removing particulate contaminants from fluids comprising, a. the structure in accordance with claim 8 in which b. the housing is fabricated from two shells joined together intermediate the ends of the housing, each shell having a generally annular, radially extending integral rib, the respective ribs being joined to each other to form the housing.
Claim 17
Dependent Claim
36 words
A filter for removing particulate contaminants from fluid comprising, a. the structure in accordance with claim 1 and, b. a metallic insert molded into the plastic base, c. the outlet passage extending through the metal insert.
Claim 18
Dependent Claim
28 words
A filter for removing particulate contaminants from fluids comprising, a. the structure in accordance with claim 16 in which, b. the inlet passage extends through the metal insert.
Claim 19
Dependent Claim
73 words
A filter for removing particulate contaminants from fluids comprising, a. the structure in accordance with claim 1 in which, b. the housing is fabricated of a suitable plastic, and c. a metallic nut on the closed end of the housing, d. a body on the nut, e. a pluraLity of radial extensions on the body of the nut, f. the body and radial extensions being molded into the closed end of the housing.
Claim 20
Dependent Claim
29 words
A filter for removing particulate contaminants from fluids comprising, a. the structure in accordance with claim 18 and, b. an Allen-wrench recess in the top of the metallic nut.
Claim 21
Dependent Claim
30 words
A filter for removing particulate contaminants from fluids comprising, a. the structure in accordance with claim 18 and, b. a Phillips-head screwdriver recess in the top of the metallic nut.
Claim 22
Dependent Claim
27 words
A filter for removing particulate contaminants from fluids comprising, a. the structure in accordance with claim 19 and, b. a Phillips-head screwdriver recess in the Allen-wrench recess.
Claim 23
Dependent Claim
36 words
A filter for removing particulate contaminants from fluids comprising, a. the structure in accordance with claim 18, and b. a plurality of intersecting flats on the housing at the top spaced apart by intervening radial recesses.
Claim 24
Dependent Claim
36 words
A filter for removing particulate contaminants from fluids comprising, a. the structure in accordance with claim 13 in which, b. the inlet passages are spaced radially away and equidistant from the axis of the outlet passage.
Claim 25
Dependent Claim
28 words
A filter for removing particulate contaminants from fluids comprising, a. the structure in accordance with claim 15 and, b. sealing ribs molded into the bottom of the base.
Claim 26
Dependent Claim
30 words
A filter for removing particulate contaminants from fluids comprising, a. the structure in accordance with claim 1 in which, b. the said grooves are deployed generally helically around the housing.
Claim 27
Dependent Claim
30 words
A filter for removing particulate contaminants from fluids comprising, a. the structure in accordance with claim 6 in which, b. the said grooves are deployed generally helically around the housing.
Claim 28
Dependent Claim
53 words
A filter for removing particulate contaminants from fluids comprising, a. the structure in accordance with claim 8 in which, b. the said grooves are deployed generally helically around the housing, c. a plurality of inlet passages in the base oriented at an angle to the axis of the housing extending between its ends.
Claim 29
Dependent Claim
71 words
A filter for removing particulate contaminants from fluids comprising, a. the structure in accordance with claim 1 and b. a pair of spaced apart cams on the end of the housing opposite the inlet and outlet means, c. the cams being engaged to the said end of the housing intermediate their ends, d. the opposed ends of the respective cams being spaced away from the housing to define a radial groove.
Claim 30
Dependent Claim
28 words
A filter for removing particulate contaminants from fluids comprising, a. the structure in accordance with claim 28 in which b. the housing and cams are fabricated of plastic.
Claim 31
Dependent Claim
43 words
A filter for removing particulate contaminants from fluids comprising, a. the structure in accordance with claim 14 in which, b. the apexes of the grooves of one shell being oriented in a direction opposite the apexes of the grooves on the other shell.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |