US2865531A - Closure cap for the cooling systems of internal combustion engines - Google Patents
Closure cap for the cooling systems of internal combustion engines Download PDFInfo
- Publication number
- US2865531A US2865531A US512832A US51283255A US2865531A US 2865531 A US2865531 A US 2865531A US 512832 A US512832 A US 512832A US 51283255 A US51283255 A US 51283255A US 2865531 A US2865531 A US 2865531A
- Authority
- US
- United States
- Prior art keywords
- disc
- valve member
- internal combustion
- closure cap
- stud
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000001816 cooling Methods 0.000 title description 13
- 238000002485 combustion reaction Methods 0.000 title description 7
- 239000002826 coolant Substances 0.000 description 7
- 239000000945 filler Substances 0.000 description 7
- 239000012530 fluid Substances 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 230000001419 dependent effect Effects 0.000 description 3
- 230000000994 depressogenic effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
- F01P11/0204—Filling
- F01P11/0209—Closure caps
- F01P11/0238—Closure caps with overpressure valves or vent valves
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S220/00—Receptacles
- Y10S220/32—Radiator cap
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7771—Bi-directional flow valves
- Y10T137/7772—One head and seat carried by head of another
- Y10T137/7773—Supporting valve only spring biased
Definitions
- This invention relates to closure caps for the cooling systems of internal combustion engines.
- closure caps embody two valves; a main valve held on its seating under spring pressure and a secondary valve designed to relieve sub-atmospheric pressure in the cooling system.
- This invention is concerned with the form of the secondary valve.
- a closure cap for internal combustion engine cooling systems having a spring-pressed primary valve member within which is a secondary valve member in the form of a freely floating disc movable between two relatively fixed parts of the primary valve member.
- the disc is preferably of rubber or like material, and preferably seats, when closed, against a shoulder forming one of said fixed parts inside the primary valve member; and rests when open, on a raised part of the other of said fixed parts.
- the raised part is preferably formed around an aperture in the other fixed part and there can be a number of smaller apertures spaced around the raised part.
- the secondary valve of this invention is particularly, but not exclusively, adapted for use in a closure cap such as is described and claimed in the specification of General Motors Corporation British Patent No. 511,007 (corresponding with the United States Patent 2,164,450 granted July 4, 1939) in which the primary valve member is domed and is loosely and pivotallymounted at its upper end on a stud inside the cap.
- Fig. 1 is a sectional elevation of one embodiment of a closure cap fixed on the filler spout of an engine cooling system;
- Fig. 2 is a view similar to Fig. l but showing the position of the secondary valve when the engine coolant vaporises and creates pressure in the cooling system;
- Fig. 3 is a side elevation of a portion of an internal combustion engine cooling system.
- a closure cap comprises a cover 1 having at its lower edge a pair of inturned tabs 2 adapted to engage, as shown, flanges 3 on a filler spout 4 which is vented at 5 and secured on the top wall of a radiator inlet header 6, the flanges 3 serving as elements of a well known type of quickly detachable bayonet connection in cooperation with the tabs 2.
- the central portion of the cap cover 1 is depressed at 7 and carries a riveted stud 8 dependent therefrom.
- the depression 7 provides a working clearance between a spring disc 9 and a ridge seat 10 on the spout 4, the spring disc 9 being formed with a central annular depression 11 forming a seat for the upper end of a coil spring 12, the lower end of which is seated on an annular shoulder 13 near the top of a domed primary valve member 14.
- the top of the valve member 14 is 2,865,531 Patented Dec. 23, 1958 formed with a central aperture whereby it is slidably and pivotally fixed on the stud 8, and with a series of small holes 15 about said central aperture.
- the primary valve member 14 has a lower out-turned flange 16 and press-fitted within the lower end of the domed primary valve member 14 is a smaller domed part 17 also having an out-turned flange 18 at its lower end.
- annular rubber valve washer 19 which is adapted to abut a seat 20 in the neck of the radiator filler spout 4 thereby forming the primary valve.
- the shoulder 13 formed in the wall of the primary domed valve member 14 acts as a, fixed part of the primary valve member 14 between which and the upper surface of the smaller domed part 17 is retained a freely floating rubber disc 21.
- the rubber disc 21 normally rests on a raised part 22 of the upper surface of the smaller domed part 17.
- the raised part 22 is formed round a central aperture 23 and smaller apertures 24 are spaced around and below the raised part 22.
- the cap In operation the cap is secured on to the filler spout 4 thereby compressing the coil spring 12 and seating spring disc 9 on ridge seat 10 and causing the domed valve member 14 to slide up the dependent stud 8 forcing the head of the stud 8 into close proximity with the plane of the shoulder 13 (Fig. 1).
- the relative positions of the shoulder 13 and the lower end of the stud 8, when the cap is secured on the spout 4 are such that when the disc 21 seats on the shoulder 13 the central portion of the .disc lies in close proximity to the lower end of the stud 8.
- the disc is bowed by the fluid pressure thereon it will be supported by contact with the stud 8.
- upward movement of the primary valve member 14 when the coolant fluid pressure exceeds the predetermined safe limit will cause the disc 21 to be unseated from shoulder 13 by the stud 8.
- the same effect will also be achieved by downward movement of the cap and stud 8 when releasing the cap from the bayonet connection on the filler spout 4. In this way, accidental sticking of the disc 21 on shoulder 13 will be prevented.
- Aiclosure .device fora filler'spout of a cooling system in which said spout has a primary valve seat and a vent above said seat said device comprising a cap adapted to be removably secured to said spout and having a dependent central stud, a domed primary valve member loosely mounted on said stud with an outwardly extending annular portion adapted to engage said primary valve seat, a spring compressed between said cap and said valve member and urging the latter downwardly, an inner annular shoulder formed on said valve member, said inner shoulder being substantially coplanar with the lower end of said stud when said outwardly extending portion engages said primary valve seat, a partition in said valve member spaced from and positioned below said shoulder, ports in said valve-member and said partition, and a free floating flexible secondary valve disc vertically movable between said inner shoulder and said partition and controlling said ports, said valve disc being movable from a first position at which said disc seats on said partition to a second position at which said disc engages said inner shoulder,
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lift Valve (AREA)
- Safety Valves (AREA)
Description
Dec. 23, 1958 s, GORST T 2,865,531
' CLOSURE CAP FOR THE COOLING SYSTEMS 0F INTERNAL COMBUSTION ENGINES Filed June 2, 1955 v 2 Sheets-Sheetl ttorney 1958 .1. R. s. GORST ET AL 2,865,531
CLOSURE CAP FOR THE COOLING SYSTEMS OF INTERNAL COMBUSTION ENGINES Filed June 2, 1955 2 Sheets-Sheet 2 Attorney United States Patent CLOSURE CAP FOR THE COOLING SYSTEMS OF INTERNAL COMBUSTION ENGINES James R. S. Gorst, Chandlers Ford, and Stanley W. Kemp,
Totton, England, assignors to General Motors Corporation, Detroit, Mich., a corporation of Delaware Application June 2, 1955, Serial No. 512,832
Claims priority, application Great Britain June 8, 1954 1 Claim. (Cl. 220-44) This invention relates to closure caps for the cooling systems of internal combustion engines.
Some closure caps embody two valves; a main valve held on its seating under spring pressure and a secondary valve designed to relieve sub-atmospheric pressure in the cooling system. This invention is concerned with the form of the secondary valve.
According to the invention there is a closure cap for internal combustion engine cooling systems, having a spring-pressed primary valve member within which is a secondary valve member in the form of a freely floating disc movable between two relatively fixed parts of the primary valve member.
The disc is preferably of rubber or like material, and preferably seats, when closed, against a shoulder forming one of said fixed parts inside the primary valve member; and rests when open, on a raised part of the other of said fixed parts. The raised part is preferably formed around an aperture in the other fixed part and there can be a number of smaller apertures spaced around the raised part.
The secondary valve of this invention is particularly, but not exclusively, adapted for use in a closure cap such as is described and claimed in the specification of General Motors Corporation British Patent No. 511,007 (corresponding with the United States Patent 2,164,450 granted July 4, 1939) in which the primary valve member is domed and is loosely and pivotallymounted at its upper end on a stud inside the cap.
The scope of the invention is defined in the appended claims; and how it can be carried into eifect is hereinafter particularly described with reference to the accompanying drawings in which:
Fig. 1 is a sectional elevation of one embodiment of a closure cap fixed on the filler spout of an engine cooling system;
Fig. 2 is a view similar to Fig. l but showing the position of the secondary valve when the engine coolant vaporises and creates pressure in the cooling system; and
Fig. 3 is a side elevation of a portion of an internal combustion engine cooling system.
In the embodiment of the invention shown in Figs. 1 and 2 a closure cap comprises a cover 1 having at its lower edge a pair of inturned tabs 2 adapted to engage, as shown, flanges 3 on a filler spout 4 which is vented at 5 and secured on the top wall of a radiator inlet header 6, the flanges 3 serving as elements of a well known type of quickly detachable bayonet connection in cooperation with the tabs 2. The central portion of the cap cover 1 is depressed at 7 and carries a riveted stud 8 dependent therefrom. The depression 7 provides a working clearance between a spring disc 9 and a ridge seat 10 on the spout 4, the spring disc 9 being formed with a central annular depression 11 forming a seat for the upper end of a coil spring 12, the lower end of which is seated on an annular shoulder 13 near the top of a domed primary valve member 14. The top of the valve member 14 is 2,865,531 Patented Dec. 23, 1958 formed with a central aperture whereby it is slidably and pivotally fixed on the stud 8, and with a series of small holes 15 about said central aperture.
The primary valve member 14 has a lower out-turned flange 16 and press-fitted within the lower end of the domed primary valve member 14 is a smaller domed part 17 also having an out-turned flange 18 at its lower end.
Between the out-turned flange 16 on the primary valve member 14 and the out-turned flange 18 on the smaller domed part 17 is an annular rubber valve washer 19 which is adapted to abut a seat 20 in the neck of the radiator filler spout 4 thereby forming the primary valve.
The shoulder 13 formed in the wall of the primary domed valve member 14 acts as a, fixed part of the primary valve member 14 between which and the upper surface of the smaller domed part 17 is retained a freely floating rubber disc 21. The rubber disc 21 normally rests on a raised part 22 of the upper surface of the smaller domed part 17. The raised part 22 is formed round a central aperture 23 and smaller apertures 24 are spaced around and below the raised part 22.
The position of the cap cover 1 and the inlet header ice 6 in relation to the radiator 25 of the cooling circuit of an engine 26 is shown in Fig. 3. v
In operation the cap is secured on to the filler spout 4 thereby compressing the coil spring 12 and seating spring disc 9 on ridge seat 10 and causing the domed valve member 14 to slide up the dependent stud 8 forcing the head of the stud 8 into close proximity with the plane of the shoulder 13 (Fig. 1).
When the engine cooling system is not in operation the rubber disc 21 rests, as shown in Fig. 1, on the raised portion 22 of the domed part 17. When the cooling system is brought into operation and the coolant vaporises, the vaporised coolant will escape partly through the small apertures 24 but to a greater extent through the aperture 23, and thence through apertures 15 to vent 5, but as the pressure of the vaporised coolant increases the disc 21 will be forced upwardly 011 the raised portion 22 into engagement with the shoulder 13 in the wall of thedomecl primary valve member 14, the escape of coolant fluid then being prevented. When the pressure of the coolant fluid increases above a predetermined safe maximum pressure the primary valve member 14 is raised against the action of spring 12 to unseat the washer 19 from the seat 20 of the filler spout 4.
Thus the rubber washer 19 on the primary valve member 14 forms, with the seat 20 a primary valve, and the rullnber disc 21, with the shoulder 13 forms a secondary va ve.
On cooling, sub-atmospheric pressure is set up within the system and the rubber disc 21 falls or is sucked downwardly into contact with the raised part 22 on which it rests. Thus air is allowed to enter the system from the atmosphere through vent 5, and apertures 15 of the domed primary valve member 14, round the edge of the rubber disc 21 of the secondary valve and through the spaced smaller apertures 24, thereby relieving the sub-atmospheric pressure.
As shown in Fig. 2, the relative positions of the shoulder 13 and the lower end of the stud 8, when the cap is secured on the spout 4 are such that when the disc 21 seats on the shoulder 13 the central portion of the .disc lies in close proximity to the lower end of the stud 8. Thus, if the disc is bowed by the fluid pressure thereon it will be supported by contact with the stud 8. Also, upward movement of the primary valve member 14 when the coolant fluid pressure exceeds the predetermined safe limit will cause the disc 21 to be unseated from shoulder 13 by the stud 8. The same effect will also be achieved by downward movement of the cap and stud 8 when releasing the cap from the bayonet connection on the filler spout 4. In this way, accidental sticking of the disc 21 on shoulder 13 will be prevented.
We claim:
Aiclosure .device fora filler'spout of a cooling system in which said spout has a primary valve seat and a vent above said seat, said device comprising a cap adapted to be removably secured to said spout and having a dependent central stud, a domed primary valve member loosely mounted on said stud with an outwardly extending annular portion adapted to engage said primary valve seat, a spring compressed between said cap and said valve member and urging the latter downwardly, an inner annular shoulder formed on said valve member, said inner shoulder being substantially coplanar with the lower end of said stud when said outwardly extending portion engages said primary valve seat, a partition in said valve member spaced from and positioned below said shoulder, ports in said valve-member and said partition, and a free floating flexible secondary valve disc vertically movable between said inner shoulder and said partition and controlling said ports, said valve disc being movable from a first position at which said disc seats on said partition to a second position at which said disc engages said inner shoulder, said end of said stud providing a support for said disc when said disc engages said inner shoulder and said stud being movable downwardly against said disc to release said disc from said inner shoulder.
References Cited in the file of this patent UNITED STATES PATENTS 1,140,713 Price May 25, 1915 1,619,238 Buss Mar. 1, 1927 2,164,450 Eshbaugh et al July 4, 1939 2,266,314 Eshbaugh Dec. 16, 1941 2,528,791 Scoville Nov. 7, 1950
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB16708/54A GB771692A (en) | 1954-06-08 | 1954-06-08 | Improved closure cap for the cooling systems of internal combustion engines |
Publications (1)
Publication Number | Publication Date |
---|---|
US2865531A true US2865531A (en) | 1958-12-23 |
Family
ID=10082229
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US512832A Expired - Lifetime US2865531A (en) | 1954-06-08 | 1955-06-02 | Closure cap for the cooling systems of internal combustion engines |
Country Status (3)
Country | Link |
---|---|
US (1) | US2865531A (en) |
FR (1) | FR1125857A (en) |
GB (1) | GB771692A (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3027735A (en) * | 1960-01-25 | 1962-04-03 | Gen Motors Corp | Refrigerating apparatus |
US3211321A (en) * | 1963-02-18 | 1965-10-12 | Allie B Holmes | Closure for pressurized fluid tank |
US3280838A (en) * | 1964-10-28 | 1966-10-25 | Brown Steel Tank Company | Vent valve |
US4676390A (en) * | 1986-07-22 | 1987-06-30 | Stant Inc. | Pressure-release fuel cap |
US4765505A (en) * | 1986-07-22 | 1988-08-23 | Stant Inc. | Delayed actuation fuel cap |
US4982456A (en) * | 1987-11-09 | 1991-01-08 | Thetford Corporation | Portable toilet with vent for flush water supply tank |
US5071021A (en) * | 1990-06-22 | 1991-12-10 | S. Smith & Son Pty. Ltd. | Tank lid |
US5108001A (en) * | 1990-07-03 | 1992-04-28 | Stant Inc. | Pressure release vent cap |
US5449086A (en) * | 1993-10-18 | 1995-09-12 | Stant Manufacturing Inc. | Delayed actuation fuel cap |
US5632298A (en) * | 1995-03-17 | 1997-05-27 | Artinian; Hagop | Resuscitation and inhalation device |
US5638975A (en) * | 1994-05-06 | 1997-06-17 | Stant Manufacturing Inc. | Lost motion fuel cap with cap closure indicator |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1140713A (en) * | 1914-05-18 | 1915-05-25 | Bingham S Price | Pressure-valve. |
US1619238A (en) * | 1925-04-13 | 1927-03-01 | Buss August | Circulating drip vent |
US2164450A (en) * | 1937-12-30 | 1939-07-04 | Gen Motors Corp | Radiator pressure cap |
US2266314A (en) * | 1937-12-30 | 1941-12-16 | Gen Motors Corp | Radiator sealing cap |
US2528791A (en) * | 1947-08-07 | 1950-11-07 | Chrysler Corp | Pressure control apparatus for engine cooling systems |
-
1954
- 1954-06-08 GB GB16708/54A patent/GB771692A/en not_active Expired
-
1955
- 1955-06-02 US US512832A patent/US2865531A/en not_active Expired - Lifetime
- 1955-06-08 FR FR1125857D patent/FR1125857A/en not_active Expired
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1140713A (en) * | 1914-05-18 | 1915-05-25 | Bingham S Price | Pressure-valve. |
US1619238A (en) * | 1925-04-13 | 1927-03-01 | Buss August | Circulating drip vent |
US2164450A (en) * | 1937-12-30 | 1939-07-04 | Gen Motors Corp | Radiator pressure cap |
US2266314A (en) * | 1937-12-30 | 1941-12-16 | Gen Motors Corp | Radiator sealing cap |
US2528791A (en) * | 1947-08-07 | 1950-11-07 | Chrysler Corp | Pressure control apparatus for engine cooling systems |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3027735A (en) * | 1960-01-25 | 1962-04-03 | Gen Motors Corp | Refrigerating apparatus |
US3211321A (en) * | 1963-02-18 | 1965-10-12 | Allie B Holmes | Closure for pressurized fluid tank |
US3280838A (en) * | 1964-10-28 | 1966-10-25 | Brown Steel Tank Company | Vent valve |
US4887733A (en) * | 1986-07-22 | 1989-12-19 | Stant Inc. | Pressure-release fuel cap |
US4765505A (en) * | 1986-07-22 | 1988-08-23 | Stant Inc. | Delayed actuation fuel cap |
US4779755A (en) * | 1986-07-22 | 1988-10-25 | Stant Inc. | Pressure release control fuel cap |
US4676390A (en) * | 1986-07-22 | 1987-06-30 | Stant Inc. | Pressure-release fuel cap |
US4982456A (en) * | 1987-11-09 | 1991-01-08 | Thetford Corporation | Portable toilet with vent for flush water supply tank |
US5071021A (en) * | 1990-06-22 | 1991-12-10 | S. Smith & Son Pty. Ltd. | Tank lid |
US5108001A (en) * | 1990-07-03 | 1992-04-28 | Stant Inc. | Pressure release vent cap |
US5449086A (en) * | 1993-10-18 | 1995-09-12 | Stant Manufacturing Inc. | Delayed actuation fuel cap |
US5638975A (en) * | 1994-05-06 | 1997-06-17 | Stant Manufacturing Inc. | Lost motion fuel cap with cap closure indicator |
US5632298A (en) * | 1995-03-17 | 1997-05-27 | Artinian; Hagop | Resuscitation and inhalation device |
Also Published As
Publication number | Publication date |
---|---|
GB771692A (en) | 1957-04-03 |
FR1125857A (en) | 1956-11-09 |
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