US4293031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine cooling system flushing apparatus and method
Assignee: Illinois Tool Works Inc
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Filing: 1978-11-20
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Granted: 1981-10-06
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Expires: 1998-11-20
Abstract
Abstract An internal combustion engine cooling system is flushed by: (a) providing a controlled pressurized flow of flushing liquid and entrained gas bubbles, (b) and passing said flow alternately through (i) the radiator in a reverse direction, (ii) the engine coolant passages in a reverse direction, (iii) the radiator in a forward direction, (iv) the engine coolant passages in a forward direction.
Inventors
- 👤 John A. Babish
- 👤 Larry K. Arnot
- 👤 Douglas C. Appel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:36
CPC Classifications
F; F28; F28G; F28G9/00; F01; F01P; F01P11/00; F01P11/06; F01P2011/065; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87265; Y10T137/87338; Y10T137/8741; Y10T137/87434
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
A special adapter useful to connect flushing apparatus with a vehicle heater and water pump, said vehicle heater and water pump being components normally connected in the engine cooling system, said apparatus having a first outlet to be connected to the water pump and a second outlet to be connected to the vehicle heater, said adapter comprising (a) a pair of tees, each having three ports, and (b) a flexible hose interconnecting a first port of one tee and a first port of the other tee, said hose adapted to be pinched off to stop said interconnection, the hose removably connected to said tees, (c) the second and third ports to one tee being respectively connected with the vehicle heater and said second outlet of said apparatus, and the second and third ports of the other tee being respectively connected with the water pump and the first outlet of said apparatus, (d) and a clamp clamping said hose to stop communication between said tees via said hose.
Claim 2
Dependent Claim
167 words
A special adapter useful to connect flushing apparatus with a vehicle heater and water pump, said vehicle heater and water pump being components normally connected in the engine cooling system, said apparatus having a first outlet to be connected to the water pump and a second outlet to be connected to the vehicle heater, said adapter comprising (a) a pair of tees, each having three ports, and (b) a flexible hose interconnecting a first port of one tee and a first port of the other tee, said hose adapted to be pinched off to stop said interconnection, the hose removably connected to said tees, (c) the second and third ports to one tee being respectively connected with the vehicle heater and said second outlet of said apparatus, and the second and third ports of the other tee being respectively connected with the water pump and the first outlet of said apparatus, (d) and a clamp clamping said hose to stop communication between said tees via said hose.
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) | 1984-10-05 | 1985-04-06 | 1985-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-05 | 1989-04-06 | 1989-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-05 | 1993-04-06 | 1993-10-06 | $7700.00 | Window Closed / Lapsed |