Patent US3645402A successfully refreshed from Google Patents.
US3645402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid coolant conditioner
Assignee: Hastings Manufacturing Co
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Filing: 1970-12-10
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Granted: 1972-02-29
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Expires: 1990-12-10
Abstract
Abstract This invention discloses a disposable-type filter particularly adapted for use in the coolant system of internal combustion engines, the filter including a housing having a support plate provided with a central interiorly threaded outlet neck and with inlet passages spaced radially from said neck, a rigid canister provided in said housing in spaced relation from said support plate, a stepped tubular adapter seated over said outlet neck and separating said canister from said support plate, and a spring mounted in said housing pressing said canister and said adapter toward said support plate. In accordance with the invention the canister includes a central tube which is perforated adjacent one end, a perforated bottom end plate, an imperforate top end plate, and an imperforate exterior tubular wall, said end plates being rigidly joined to the exterior and central tubes. The canister is separated into two interior chambers by an annular perforated partition. The bottom chamber is filled with a depth medium of filtering material such as wood wool, rayon fibers, or the like, on top of which rests a cathodic anode disc. The top chamber is provided with a chemical package including ion exchange beads and soluble corrosion prevention chemicals. The flow of liquid within the filter is through the inlet passages into the space between the top of the canister and the support plate, down between the outside of the canister and the housing to the bottom of the housing, upwardly in series through the perforated bottom end plate, the depth filtering media, the anode disc, the transverse partition into the chemical package, radially inwardly from the chemical package through the perforations in the central tube, upwardly through the central tube and thus out of the filter through the outlet neck.
Inventors
- 👤 Willis Alexander
- 👤 Robert J Shaltis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:37
CPC Classifications
B; B01; B01D; B01D27/00; B01D27/02; B01D27/14; B01D27/146; B01D27/148; B01D35/00; B01D35/06; B01D37/00; B01D37/02; B01D37/025; C; C02; C02F; C02F9/00; C02F9/20; F; F01; F01P; F01P11/00; F01P11/06; F01P2011/061; F01P2011/066
Claims Analysis
Total Claims: 45
Claim 1
Independent Claim
405 words
A disposable-type filter means for the liquid coolant in the cooling system of internal combustion engines comprising a filter housing adapted to be connected in the cooling system of an internal combustion engine so that at least part of the circulating coolant will pass through the filter, said housing including a shell portion closed at one end with an integral end member and at the other end with a support plate assembly, said support plate assembly having a centrally disposed screw threaded, tubular outlet neck and multiple inlet openings spaced radially outwardly from said outlet neck, a rigid canister provided in said housing and radially spaced inwardly from said shell to provide an annular flow passage, a tubular adapter disposed within said housing axially inwardly with respect to said tubular outlet neck anD separating said canister from said support plate assembly, and a spring mounted in said housing and biasing said canister and said adapter toward said support plate assembly, said canister including a central canister tube disposed in axial alignment with said tubular adapter and said tubular outlet neck, one end of said central tube being open and communicating with said outlet through said tubular adapter, and end cup means closing the other end of said central tube, an imperforate exterior canister tube concentric with said central tube and radially spaced outwardly thereof, a perforated canister end plate adjacent the closed end of said central tube, and an imperforate canister end plate adjacent the open end of said central tube, means sealingly and rigidly connecting said canister end plates to the opposite ends of said central and exterior canister tubes respectively, an annular transverse partition separating said canister into first and second longitudinally spaced canister chambers, said partition having annularly arranged apertures extending therethrough, said first canister chamber being adjacent said perforated end plate of said canister, and said second canister chamber being adjacent said imperforate canister end plate, an inlet chamber in the space between the imperforate end of said canister and said support plate assembly, a flow reversing chamber in the space between the integrally closed end of said shell and said perforated end of said canister, an outlet chamber within said central tube, and radially extending apertures in said central tube adjacent said outlet end providing fluid communication only between said central tube and said second canister chamber, and diverse liquid coolant treating means in said first and second canister chambers.
Claim 2
Dependent Claim
405 words
A disposable-type filter means for the liquid coolant in the cooling system of internal combustion engines comprising a filter housing adapted to be connected in the cooling system of an internal combustion engine so that at least part of the circulating coolant will pass through the filter, said housing including a shell portion closed at one end with an integral end member and at the other end with a support plate assembly, said support plate assembly having a centrally disposed screw threaded, tubular outlet neck and multiple inlet openings spaced radially outwardly from said outlet neck, a rigid canister provided in said housing and radially spaced inwardly from said shell to provide an annular flow passage, a tubular adapter disposed within said housing axially inwardly with respect to said tubular outlet neck anD separating said canister from said support plate assembly, and a spring mounted in said housing and biasing said canister and said adapter toward said support plate assembly, said canister including a central canister tube disposed in axial alignment with said tubular adapter and said tubular outlet neck, one end of said central tube being open and communicating with said outlet through said tubular adapter, and end cup means closing the other end of said central tube, an imperforate exterior canister tube concentric with said central tube and radially spaced outwardly thereof, a perforated canister end plate adjacent the closed end of said central tube, and an imperforate canister end plate adjacent the open end of said central tube, means sealingly and rigidly connecting said canister end plates to the opposite ends of said central and exterior canister tubes respectively, an annular transverse partition separating said canister into first and second longitudinally spaced canister chambers, said partition having annularly arranged apertures extending therethrough, said first canister chamber being adjacent said perforated end plate of said canister, and said second canister chamber being adjacent said imperforate canister end plate, an inlet chamber in the space between the imperforate end of said canister and said support plate assembly, a flow reversing chamber in the space between the integrally closed end of said shell and said perforated end of said canister, an outlet chamber within said central tube, and radially extending apertures in said central tube adjacent said outlet end providing fluid communication only between said central tube and said second canister chamber, and diverse liquid coolant treating means in said first and second canister chambers.
Claim 3
Dependent Claim
17 words
A filter means as defined in claim 1 wherein the filter housing is of the spin-on type.
Claim 4
Dependent Claim
37 words
The filter set forth in claim 1 wherein said diverse liquid coolant treating means includes a depth filter medium in one of said canister chambers and a liquid-treating chemical package in the other of said canister chambers.
Claim 5
Dependent Claim
43 words
The filter means set forth in claim 3 wherein said liquid-treating chemical package includes ion exchange resin particles and a soluble chemical means for forming a corrosion protecting film on the interior surfaces of the liquid coolant passages in said internal combustion engine.
Claim 6
Dependent Claim
31 words
The filter means set forth in claim 3 wherein said chemical package includes a fluid permeable annular fabric bag fitted within said other canister chamber and enveloping said liquid-treating chemical materials.
Claim 7
Dependent Claim
46 words
The filter means set forth in claim 3 wherein said chemical package includes bulk chemicals packed within said other canister chamber, and a chemical migration barrier means wrapped around the radial outer surface of said central tube and over said transverse partition to prevent chemical migration.
Claim 8
Dependent Claim
29 words
The filter means set forth in claim 4 wherein said chemical package includes also a dye to color the liquid coolant to make it visible to the human eye.
Claim 9
Dependent Claim
21 words
The filter means set forth in claim 3 wherein said depth filter medium is a depth filtration material including wood wool.
Claim 10
Dependent Claim
21 words
The filter means set forth in claim 3 wherein said depth filter medium is a depth filtration material including rayon fibers.
Claim 11
Dependent Claim
62 words
The filter means set forth in claim 1 wherein a sacrificial anode is provided within said canister, said sacrificial anode being made of a metallic material which is higher in the electrochemical series with respect to the metal of the internal combustion engine with which the filter means is to be used for preventing corrosion of the engine by galvanic current flow.
Claim 12
Dependent Claim
17 words
The filter means set forth in claim 10 wherein said sacrificial anode is a perforated annular disc.
Claim 13
Dependent Claim
51 words
The filter means set forth in claim 11 wherein said first canister chamber is provided with said depth filter medium and second canister chamber is provided with said liquid treating chemical package aNd said sacrificial anode is provided in said first chamber between said depth filter medium and said transverse partition.
Claim 14
Dependent Claim
35 words
The filter means set forth in claim 12 wherein an annular detent is provided in said exterior canister tube adjacent one side of said partition to limit longitudinal motion of said partition in one direction.
Claim 15
Dependent Claim
41 words
The filter means set forth in claim 13 wherein an annular ring is secured to the interior surface of said exterior canister tube adjacent the other side of said partition to limit longitudinal motion of said partition in the other direction.
Claim 16
Dependent Claim
46 words
The filter means set forth in claim 14 wherein said annular ring has a recessed shoulder facing oppositely to said partition and said anode disc is seated on said recessed shoulder, said annular ring providing an electrical connection between said anode and said exterior canister tube.
Claim 17
Dependent Claim
36 words
The filter means set forth in claim 3 wherein said central tube is wrapped on its radially outer surface with a fluid permeable fabric means to provide a migration barrier for said liquid treating chemical package.
Claim 18
Dependent Claim
41 words
The filter means set forth in claim 1 in combination with an internal combustion engine having a liquid coolant system, and support means for pendantly supporting said filter means in fluid communication with the liquid coolant in said liquid coolant system.
Claim 19
Dependent Claim
38 words
The combination set forth in claim 17 wherein said coolant system includes a bypass of said internal combustion engine for a portion of the liquid coolant in said system and said filter means is located in said bypass.
Claim 20
Dependent Claim
44 words
The combination set forth in claim 17 wherein said support means includes fluid inflow passage means in sealed communication with said multiple inlet openings of said filter means and fluid outflow passage means in sealed communication with the outlet neck of said filter means.
Claim 21
Dependent Claim
13 words
The combination set forth in claim 17 wherein the liquid coolant is tapwater.
Claim 22
Dependent Claim
150 words
An improved filter element for use in a filter casing comprising a rigid canister, said canister including a central canister tube having one open end and another closed end, an imperforate exterior canister tube surrounding said central tube and radially spaced outwardly thereof; a perforated canister end plate adjacent said closed end of said central tube, and an imperforate canister end plate adjacent the open end of said canister tube, means sealingly and rigidly connecting said canister end plates to the opposite ends of said central and exterior canister tubes respectively, an annular transverse partition separating said canister into first and second longitudinally spaced canister chambers, said partition having apertures extending therethrough, said first canister chamber being adjacent said perforated end plate of said canister, and said second canister chamber being adjacent said imperforate canister end plate, and diverse liquid coolant treating means in said first and second canister chambers.
Claim 23
Dependent Claim
150 words
An improved filter element for use in a filter casing comprising a rigid canister, said canister including a central canister tube having one open end and another closed end, an imperforate exterior canister tube surrounding said central tube and radially spaced outwardly thereof; a perforated canister end plate adjacent said closed end of said central tube, and an imperforate canister end plate adjacent the open end of said canister tube, means sealingly and rigidly connecting said canister end plates to the opposite ends of said central and exterior canister tubes respectively, an annular transverse partition separating said canister into first and second longitudinally spaced canister chambers, said partition having apertures extending therethrough, said first canister chamber being adjacent said perforated end plate of said canister, and said second canister chamber being adjacent said imperforate canister end plate, and diverse liquid coolant treating means in said first and second canister chambers.
Claim 24
Dependent Claim
37 words
The filter set forth in claim 21 wherein said diverse liquid coolant treating means includes a depth filter medium in one of said canister chambers and a liquid-treating chemical package in the other of said canister chambers.
Claim 25
Dependent Claim
43 words
The filter means set forth in claim 22 wherein said liquid-treating chemical package includes ion exchange resin particles and a soluble chemical means for forming a corrosion protecting film on the interior surfaces of the liquid coolant passages in said internal combustion engine.
Claim 26
Dependent Claim
32 words
The filter means set forth in claim 22 wherein said chemical package includes a fluid permeable annular fabric bag fitted within said other canister chamber and enveloping said liquid treating chemical materials.
Claim 27
Dependent Claim
46 words
The filter means set forth in claim 22 wherein said chemical package includes bulk chemicals packed within said other canister chamber, and a chemical migration barrier means wrapped around the radial outer surface of said central tube and over said transverse partition to prevent chemical migration.
Claim 28
Dependent Claim
29 words
The filter means set forth in claim 23 wherein said chemical package includes also a dye to color the liquid coolant to make it visible to the human eye.
Claim 29
Dependent Claim
21 words
The filter means set forth in claim 22 wherein said depth filter medium is a depth filtration material including wood wool.
Claim 30
Dependent Claim
21 words
The filter means set forth in claim 22 wherein said depth filter medium is a depth filtration material including rayon fibers.
Claim 31
Dependent Claim
62 words
The filter means set forth in claim 21 wherein a sacrificial anode is provided within said canister, said sacrificial anode being made of a metallic material which is higher in the electrochemical series with respect to the metal of the internal combustion engine with which the filter means is to be used for preventing corrosion of the engine by galvanic current flow.
Claim 32
Dependent Claim
17 words
The filter means set forth in claim 29 wherein said sacrificial anode is a perforated annular disc.
Claim 33
Dependent Claim
51 words
The filter means set forth in claim 30 wherein said first canister chamber is provided with said depth filter medium and second canister chamber is provided with said liquid treating chemical package and said sacrificial anode is provided in said first chamber between said depth filter medium and said transverse partition.
Claim 34
Dependent Claim
35 words
The filter means set forth in claim 31 wherein an annular detent is provided in said exterior canister tube adjacent one side of said partition to limit longitudinal motion of said partition in one direction.
Claim 35
Dependent Claim
41 words
The filter means set forth in claim 32 wherein an annular ring is secured to the interior surface of said exterior canister tube adjacent the other side of said partition to limit longitudinal motion of said partition in the other direction.
Claim 36
Dependent Claim
46 words
The filter means set forth in claim 33 wherein said annular ring has a recessed shoulder facing oppositely to said partition and said anode disc is seated on said recessed shoulder, said annular ring providing an electrical connection between said anode and said exterior canister tube.
Claim 37
Dependent Claim
36 words
The filter means set forth in claim 22 wherein said central tube is wrapped on its radially outer surface with a fluid permeable fabric means to provide a migration barrier for said liquid treating chemical package.
Claim 38
Dependent Claim
16 words
The combination as set forth in claim 17 wherein the liquid coolant is an antifreeze solution.
Claim 39
Dependent Claim
18 words
The filter means as set forth in claim 21 wherein the filter casing is of the spin-on type.
Claim 40
Dependent Claim
281 words
An improved filter unit for liquid treatment comprising a filter housing having first and second opening means adjacent one end thereof for ingress and egress of liquid and also means for mounting said filter unit in its intended place of use, a liquid treatment element, and means for mounting said liquid treatment element in spaced relationship within said filter casing, said liquid treatment element comprising a rigid canister having radially spaced interior and exterior tubular walls and a pair of end walls rigidly connecting the opposite ends of said interior and exterior walls, said exterior tubular wall being imperforate, said interior wall being perforated for at least a portion of its length, said end wall adjacent the end having said opening means being imperforate and the opposite end wall being perforated, said interior and exterior walls together with said end walls defining an annular cavity, said interior tubular wall and said mounting means providing a first liquid passageway, and said exterior wall and the interior of said filter housing defining a second liquid passageway, access means adjacent one end of said canister providing liquid communication between said cavity and said first liquid passageway, and additional access means adjacent the other end of said canister providing communication between said cavity and said second liquid passageway and liquid treatment means within said cavity for conditioning said liquid, said first passageway being in communication with one of said first and second opening means and said second passageway being in communication with the other of said first and second opening means, said liquid treatment means including at least one annular sacrificial metal anode and at least one diverse liquid treatment material located within said cavity.
Claim 41
Dependent Claim
281 words
An improved filter unit for liquid treatment comprising a filter housing having first and second opening means adjacent one end thereof for ingress and egress of liquid and also means for mounting said filter unit in its intended place of use, a liquid treatment element, and means for mounting said liquid treatment element in spaced relationship within said filter casing, said liquid treatment element comprising a rigid canister having radially spaced interior and exterior tubular walls and a pair of end walls rigidly connecting the opposite ends of said interior and exterior walls, said exterior tubular wall being imperforate, said interior wall being perforated for at least a portion of its length, said end wall adjacent the end having said opening means being imperforate and the opposite end wall being perforated, said interior and exterior walls together with said end walls defining an annular cavity, said interior tubular wall and said mounting means providing a first liquid passageway, and said exterior wall and the interior of said filter housing defining a second liquid passageway, access means adjacent one end of said canister providing liquid communication between said cavity and said first liquid passageway, and additional access means adjacent the other end of said canister providing communication between said cavity and said second liquid passageway and liquid treatment means within said cavity for conditioning said liquid, said first passageway being in communication with one of said first and second opening means and said second passageway being in communication with the other of said first and second opening means, said liquid treatment means including at least one annular sacrificial metal anode and at least one diverse liquid treatment material located within said cavity.
Claim 42
Dependent Claim
33 words
The filter unit as set forth in claim 38 wherein partition means is provided transversely of said cavity to divide said cavity into two chambers with said liquid treatment material in each chamber.
Claim 43
Dependent Claim
22 words
The filter unit as set forth in claim 39 wherein there is an annular sacrificial anode disc positioned adjacent said partition means.
Claim 44
Dependent Claim
32 words
The filter unit as set forth in claim 39 wherein the liquid treatment material in one of said chambers is diverse from the liquid treatment material in the other of said chambers.
Claim 45
Dependent Claim
25 words
The filter unit as set forth in claim 41 wherein the liquid treatment material in the one of said chambers includes ion exchange resin particles.
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) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |