Internal-combustion engines – Accessories – Covers – trays – vibrators – corrosion inhibitors – air filters
Reexamination Certificate
2000-10-11
2001-10-09
Kamen, Noah P. (Department: 3747)
Internal-combustion engines
Accessories
Covers, trays, vibrators, corrosion inhibitors, air filters
C055S385100, C055S408000, C055S467100
Reexamination Certificate
active
06298819
ABSTRACT:
BACKGROUND OF THE INVENTION
When engine radiators become clogged with debris, the radiator becomes inoperative or, partly so, to the extent that the engine overheats. In the past, stationary mesh screens have been used in advance of the radiator when an engine is being used to power a machine at a worksite in which “dirty air” might create problems, but these screens have tended to clog and require frequent cleaning, particularly in operations in which entraining matter is created at the worksite.
Other attempts to solve the problem have involved the use of spinning perforated or mesh cylinders to admit air to radiators of the type which typically are used on agricultural machinery. These, also, tend to become easily clogged and to require frequent and difficult manual cleaning of the cylinders and radiator.
SUMMARY OF THE INVENTION
The present invention is concerned with a frustro-conical tubular device having truly radial fins which do not operate as fans to suck air, and accordingly entrained particles, into the device. The air cleaner of the present invention is in the form of a right circular cone frustrum having a slitted surface area. The frustro-conical member may be driven by its own hydraulic, or other suitable, motor at a speed different than the speed of rotation of the suction fan. The frusto-conical member is driven at a speed such as not to materially reduce the volume of air being drawn in through the frustro-conical member by the suction fan.
One of the prime objects of the present invention is to provide an air cleaner assembly which can be readily attached to the radiator frame of a radiator having a suction fan disposed behind it which is driven by the diesel or other internal combustion engine which the radiator protects.
A further object of the invention is to provide an air cleaner radiator fan assembly wherein the controlled air flow volume into the radiator is not diminished, but foreign matter which might entrain in the air flow is deflected and does not enter the air cleaner.
Another object of the invention is to provide a cleaner assembly which avoids clog problems and the frequent radiator dismantlement and cleaning associated therewith.
Still, another object of the invention is to provide an air cleaner attachment for engine radiator suction fans which is designed to prevent undue shutdown of the machinery which the engine is operating.
A further object of the invention is to provide a relatively economical assembly of the character mentioned which can be relatively economically fabricated, and yet is reliable and durable, and requires virtually no maintenance.
Other objects and advantages of the invention will become apparent with reference to the accompanying drawings and the accompanying descriptive matter.
REFERENCES:
patent: 4299603 (1981-11-01), Friesen
patent: 4874411 (1989-10-01), Snauwaert et al.
patent: 5046458 (1991-09-01), Kronich
patent: 5449391 (1995-09-01), Decker
patent: 5494006 (1996-02-01), Davis, Jr.
patent: 5505756 (1996-04-01), Decker
patent: 5766315 (1998-06-01), Moredock
patent: 5944603 (1999-08-01), Guinn et al.
Johnson Thomas L.
Rescoe Lawerence O.
Kamen Noah P.
LOR Technologies, Inc.
Reising Ethington, Barnes, Kisselle, Learman & McCulloch, P.C.
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