Fluid handling – Diverse fluid containing pressure systems – Liquid filling by evacuating container
Reexamination Certificate
2002-02-01
2004-07-20
Michalsky, Gerald A. (Department: 3753)
Fluid handling
Diverse fluid containing pressure systems
Liquid filling by evacuating container
C184S001500
Reexamination Certificate
active
06763847
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an airless oil header, and more particularly to an oil airless sucking machine that has a small volume for carrying, can suit any size oil container, and has a non-home switch that does not have to be held all the time when running.
2. Description of Prior Art
In common vehicles, trains, various machines, and mechanical equipments, gear boxes thereof need to use lubricant for lubrication, but after a certain period of time of running or a certain distance (km or mile), to keep the lubrication function in an efficient state the lubricant has to be replaced. In general, the users should use a professional oil header driven by a vacuum-pump generating vacuum sucking force to suck up waste oil. But this kind of oil header is very expensive, hence an airless oil header employing a vacuum suction force created by compressed air jet flow came out.
As shown in
FIG. 1
, a conventional airless oil header
10
is comprised of a blowgun
11
, a nozzle carrier
12
combined on a blowpipe
111
, an oil tank
13
attached on a bottom side of the nozzle carrier
12
via a cap
14
so that a vacuum suction force generated by compressed air jet flow blown out from a nozzle
121
inside of the nozzle carrier
12
at a high speed creates a suction force in the oil collection tank
13
, and a suction pipe
15
crosses inside of the gear box over the oil collection tank
13
. Because the specific weight of oil is greater than that of air, waste oil will be dropped into the oil collection tank
13
. Meanwhile, air is absorbed into the inside of the nozzle carrier and winded out via a muffle
16
by a high speed jet flow of compressed air with lower noise, thereby keeping collection waste oil of the gear box in the oil collection tank
13
by suction until it is filled up and taken away.
The above-mentioned airless oil header, by means of the vacuum suction force generated by the high speed jet flow of compressed air, has a great suction effect in practice. Whatever structure and cost comparing with that of the pump oil header, it is bound to suit various factories and common families, but there are some demerits existing in structure design and facility as following:
1. During suction process the operator has to hold a lever latch
112
of the blowgun
11
down to keep the compressed air jet flow in a blowing state, so one hand is occupied by this, and the suction pipe
15
has to be held for adjusting position along with a change in level of oil in the gear box, therefore the operator will be convenienced.
2. The nozzle carrier
12
and the cap
14
are fixed in an integrated structure, so the cap
14
cannot be replaced so that the size of the oil tank is limited. In sucking a large volume of oil, an operator has to interrupt the suction process to turn over the waste oil as the oil tank
13
is filled up. Depending on the volume of oil contained in the gear box, the number of interruptions is changed, wasting time and labor.
OBJECTS AND SUMMARY OF THE INVENTION
It is therefore a main object of the present invention to provide an airless oil header, which can be operated easily, just needs one action to cut in or off a non-home switch to control the compressed air jet flow.
Another object of the present invention is to provide an airless oil header that is suited for replacing a variety of different sized oil containers.
REFERENCES:
patent: 1986476 (1935-01-01), Ironside
patent: 2682886 (1954-07-01), Paxton
patent: 5427505 (1995-06-01), Payne
patent: 6412669 (2002-07-01), Chuang
patent: 6558138 (2003-05-01), Tseng
Baxley Charles E.
Michalsky Gerald A.
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