Sealing system and level monitor for a tank
OwnerArthur W. Lauderinventor
Life of this patent
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Abstract
Sealing systems and level monitors for a tank are disclosed. A housing defines a bore and has exterior dimensions suitable for fitting in a port through the tank. An elongate member or cable passes through the bore of the housing. First and second seal assemblies are set within the bore against first and second stops, respectively, in the housing. The first and second seal assemblies are spaced from one another to form a fluid reservoir and are both sealed to the housing and to the elongate member or cable. The fluid reservoir may be pressured by a bias device. The elongate member or cable may be connected to a float.
Claims20
A sealing system for a tank having a port through the tank, the sealing system comprising:
- a housing defining a bore, the housing having exterior dimensions suitable for fitting of the housing in the port through the tank;
- a cable passing through the bore of the housing;
- a first seal assembly set within the bore against a first stop in the housing, the first seal assembly being sealed to the housing and to the cable with the cable passing through the first seal assembly;
- a second seal assembly set within the bore against a second stop in the housing, the second sealing assembly being sealed to the housing and to the cable with the cable passing through the second seal assembly;
- and
- the first seal assembly being spaced from the second seal assembly to form a reservoir containing a fluid and one or both of the first seal assembly and the second seal assembly being biased against the fluid to maintain pressure on the fluid.
A level monitor for a tank containing liquid and having a port through the tank, the level monitor comprising:
- a float for the liquid in the tank;
- a housing defining a bore, the housing having exterior dimensions suitable for fitting of the housing in the port through the tank;
- an elongate member attached to the float and passing through the bore of the housing;
- a first seal assembly set within the bore against a first stop in the housing, the first seal assembly being sealed to the housing and to the elongate member with the elongate member passing through the first seal assembly;
- a second seal assembly set within the bore against a second stop in the housing, the second sealing assembly being sealed to the housing and to the elongate member with the elongate member passing through the second seal assembly;
- and
- the first seal assembly being spaced from the second seal assembly to form a reservoir containing a fluid under pressure.
A sealing system for a tank having a port through the tank, the sealing system comprising:
- a housing defining a bore, the housing having exterior dimensions suitable for fitting of the housing in the port through the tank;
- an elongate member passing through the bore of the housing;
- a first seal assembly set within the bore against a first stop in the housing, the first seal assembly being sealed to the housing and to the elongate member with the elongate member passing through the first seal assembly;
- a second seal assembly set within the bore against a second stop in the housing, the second sealing assembly being sealed to the housing and to the elongate member with the elongate member passing through the second seal assembly;
- the first seal assembly being spaced from the second seal assembly to form a reservoir containing a fluid;
- and
- a bias device for maintaining pressure on the fluid.
Dependencies are inferred from the claim text.