Fluent material handling – with receiver or receiver coacting mea – Evacuation apparatus
Reexamination Certificate
2001-12-11
2003-02-11
Douglas, Steven O. (Department: 3751)
Fluent material handling, with receiver or receiver coacting mea
Evacuation apparatus
C141S301000, C141S387000, C004S321000
Reexamination Certificate
active
06516836
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates generally to the operation of the living quarters of recreational vehicles. More particularly, it relates to the expunging of the waste tank of the recreational vehicle.
BACKGROUND OF THE INVENTION
There are a many different types of recreational vehicles, often referred to as “RVs”. One type of RV has living quarters that include a toilet, washing and kitchen facilities. The waste products from these are collected in an on-board tank that must be periodically expunged.
The process for expunging the waste tank is relatively straight forward. The RV must stop next to a sewer system access pipe, commonly found at RV parks, where the operator of the RV connects the waste tank via a hose to the access pipe. Then, a valve is opened to allow the waste from the tank to drain by gravity into the sewer system.
The hose is connected permanently to the RV waste tank and stored in a compartment toward the back of the vehicle. The hose is expandable that can be compressed to fit within its compartment, usually in the bumper, or stretched so that it can be inserted into the sewer system.
This operation may be straightforward, but it is also a disagreeable task. RV's are designed to allow relatively convenient draining of its waste tank and sewer system access pipes are available at convenient locations for RV travelers, but ultimately, the operator of the RV must still undertake the chore of draining the tank. Furthermore, the end of the hose becomes fouled with waste. Odors add to the disagreeable nature of the task.
Thus, there remains a need for improvements in the way the waste tank of an RV is emptied to lessen the disagreeable aspects of this chore.
SUMMARY OF THE INVENTION
According to its major aspects and briefly recited, the present invention is a motorized device to extend and retract the waste hose of an RV. The motorized device causes the proximal end of the hose to be extended from the RV so that it can be inserted into the access pipe of a sewer system and will retract it when the waste tank has been emptied. The device is operable either by throwing a switch to activate a motor or pressing a button on a remote control unit.
The use of a motor is an important feature of the present invention. The use of a motor obviates the need to physically pull the hose from its compartment and to push it back into the compartment, which are both disagreeable tasks.
The operation of the motor using a remote control is another feature of the present invention. The use of the remote also allows the RV operator conduct the procedure in part without having to go to a fixed set of controls.
These and other features and their advantages will be apparent to those skilled in the art of RV usage and design from a careful reading of the Detailed Description of Preferred Embodiments, accompanied by the following drawings.
REFERENCES:
patent: 4133347 (1979-01-01), Mercer
patent: 5023959 (1991-06-01), Mercer
patent: 5247974 (1993-09-01), Sargent et al.
patent: 6352088 (2002-03-01), Stegall
Douglas Steven O.
Mann Michael A
Nexsen Pruet Jacobs & Pollard LLC
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