US3650147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling system pressure tester
Assignee: Glad Products Co
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Filing: 1970-06-26
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Granted: 1972-03-21
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Expires: 1990-06-26
Abstract
Abstract A cooling system pressure tester for automotive engine cooling systems and a method for pressure testing such systems. The pressure tester comprises a fitting having outlets connected in line with the heater system conduit, a conduit connected between a source of pressurized water and the inlet of the fitting, and means for controlling and means for measuring the pressure in the system. The entire automotive engine cooling system may be pressure tested at one time.
Inventors
- 👤 Robert G Moyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:04
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/26; G01M3/32; G01M3/3227
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
126 words
A pressure tester for pressure testing an automotive engine cooling system wherein said system includes an engine block, a heater, a heater-supply conduit connected between said engine block and heater, a radiator provided with a radiator cap, and means for connecting said engine block, heater, heater-supply conduit and radiator for circulating coolant therethrough; said pressure tester means comprising: a. a fitting having openings, connected in line with said heater-supply conduit of said engine cooling system; b. a water conduit connected between a source of pressurized water and an inlet opening of said fitting; c. means for controlling the flow of water through said water conduit and into said heater-supply conduit by way of said fitting; and d. means for measuring the pressure in said water conduit.
Claim 2
Dependent Claim
126 words
A pressure tester for pressure testing an automotive engine cooling system wherein said system includes an engine block, a heater, a heater-supply conduit connected between said engine block and heater, a radiator provided with a radiator cap, and means for connecting said engine block, heater, heater-supply conduit and radiator for circulating coolant therethrough; said pressure tester means comprising: a. a fitting having openings, connected in line with said heater-supply conduit of said engine cooling system; b. a water conduit connected between a source of pressurized water and an inlet opening of said fitting; c. means for controlling the flow of water through said water conduit and into said heater-supply conduit by way of said fitting; and d. means for measuring the pressure in said water conduit.
Claim 3
Dependent Claim
131 words
In combination: an automotive engine cooling system and means for pressure testing said engine cooling system, said engine cooling system including an engine block, a heater, a heater-supply conduit connected between said engine block and heater, a radiator provided with a radiator cap, and means for connecting said engine block, heater, heater-supply conduit and radiator for circulating coolant therethrough; said pressure testing means comprising: a. a fitting having openings, connected in line with said heater-supply conduit of said engine cooling system; b. a water conduit connected between a source of pressurized water and an inlet of said fitting; c. means for controlling the flow of water through said water conduit and into said heater-supply conduit by way of said fitting; and d. means for measuring the pressure in said water conduit.
Claim 4
Dependent Claim
131 words
In combination: an automotive engine cooling system and means for pressure testing said engine cooling system, said engine cooling system including an engine block, a heater, a heater-supply conduit connected between said engine block and heater, a radiator provided with a radiator cap, and means for connecting said engine block, heater, heater-supply conduit and radiator for circulating coolant therethrough; said pressure testing means comprising: a. a fitting having openings, connected in line with said heater-supply conduit of said engine cooling system; b. a water conduit connected between a source of pressurized water and an inlet of said fitting; c. means for controlling the flow of water through said water conduit and into said heater-supply conduit by way of said fitting; and d. means for measuring the pressure in said water conduit.
Claim 5
Dependent Claim
12 words
The apparatus defined by claim 2 wherein said fitting is a T-connection.
Claim 6
Dependent Claim
23 words
The apparatus defined by claim 2 wherein said means for controlling the flow of water through said water conduit is a toggle valve.
Claim 7
Dependent Claim
30 words
The apparatus defined by claim 2 further including a safety device connected in said water conduit to prevent the pressure in the engine cooling system from reaching an excessive level.
Claim 8
Dependent Claim
15 words
The apparatus defined by claim 5 wherein said safety device is a pressure relief valve.
Claim 9
Dependent Claim
17 words
The apparatus defined by claim 2 wherein said means for measuring the pressure is a pressure gauge.
Claim 10
Dependent Claim
19 words
The apparatus defined by claim 2 further including means for releasing the water pressure in said engine cooling system.
Claim 11
Dependent Claim
141 words
In combination: an automotive engine cooling system and means for pressure testing said engine cooling system, said engine cooling system including an engine block, a heater, a heater-supply conduit connected between said engine block and heater, a radiator provided with a radiator cap, and means for connecting said engine block, heater- heater-supply conduit and radiator for circulating coolant therethrough; said pressure testing means comprising: a. a T-connection having its opposed outlets connected in line with said heater-supply conduit of said engine cooling system and having an inlet opening; b. a water conduit connected to said inlet opening of said T-connection; c. a valve in said water conduit for controlling the flow of water into said heater-supply conduit by way of said T-connection; d. pressure gauge connected to said water conduit; and e. a pressure relief valve connected to said water conduit.
Claim 12
Dependent Claim
141 words
In combination: an automotive engine cooling system and means for pressure testing said engine cooling system, said engine cooling system including an engine block, a heater, a heater-supply conduit connected between said engine block and heater, a radiator provided with a radiator cap, and means for connecting said engine block, heater- heater-supply conduit and radiator for circulating coolant therethrough; said pressure testing means comprising: a. a T-connection having its opposed outlets connected in line with said heater-supply conduit of said engine cooling system and having an inlet opening; b. a water conduit connected to said inlet opening of said T-connection; c. a valve in said water conduit for controlling the flow of water into said heater-supply conduit by way of said T-connection; d. pressure gauge connected to said water conduit; and e. a pressure relief valve connected to said water conduit.
Claim 13
Independent Claim
112 words
A method for pressure testing an automotive engine cooling system including an engine block, a heater, a heater-supply conduit connected between said engine block and heater, and a radiator provided with a radiator cap, which method comprises: a. pumping water into said engine cooling system through An opening in said heater-supply conduit intermediate said engine block and heater and with said radiator cap in place on said radiator until said engine cooling system is hydraulically full; b. increasing the hydraulic pressure in said cooling system until the desired test pressure is reached to locate any leaks in said system by inspection; and then c. releasing the pressure in said engine cooling system.
Claim 14
Independent Claim
112 words
A method for pressure testing an automotive engine cooling system including an engine block, a heater, a heater-supply conduit connected between said engine block and heater, and a radiator provided with a radiator cap, which method comprises: a. pumping water into said engine cooling system through An opening in said heater-supply conduit intermediate said engine block and heater and with said radiator cap in place on said radiator until said engine cooling system is hydraulically full; b. increasing the hydraulic pressure in said cooling system until the desired test pressure is reached to locate any leaks in said system by inspection; and then c. releasing the pressure in said engine cooling system.
Claim 15
Dependent Claim
105 words
A pressure tester for pressure testing an automotive engine cooling system wherein said system includes an engine block and heater, a heater-supply conduit connected between said engine block and heater, a radiator provided with a radiator cap, and means for connecting said engine block, heater, heater-supply conduit and radiator for circulating coolant therethrough; said pressure tester means comprising: a. a water conduit connected between a source of pressurized water and an inlet opening in said engine cooling system; b. means for controlling the flow of water through said water conduit and into said opening; and c. means for measuring the pressure in said water conduit.
Claim 16
Dependent Claim
105 words
A pressure tester for pressure testing an automotive engine cooling system wherein said system includes an engine block and heater, a heater-supply conduit connected between said engine block and heater, a radiator provided with a radiator cap, and means for connecting said engine block, heater, heater-supply conduit and radiator for circulating coolant therethrough; said pressure tester means comprising: a. a water conduit connected between a source of pressurized water and an inlet opening in said engine cooling system; b. means for controlling the flow of water through said water conduit and into said opening; and c. means for measuring the pressure in said water conduit.
References Cited (Backward Citations)
US2760367A
Cited
US2893238A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-21 | 1975-09-20 | 1976-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-21 | 1979-09-20 | 1980-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-21 | 1983-09-20 | 1984-03-21 | $7700.00 | Window Closed / Lapsed |