Fluid sprinkling – spraying – and diffusing – With system fluid relief or return to supply – Return from liquid pump outlet to supply holder
Reexamination Certificate
2001-07-16
2003-09-30
Mar, Michael (Department: 3752)
Fluid sprinkling, spraying, and diffusing
With system fluid relief or return to supply
Return from liquid pump outlet to supply holder
C239S135000, C239S146000, C239S198000
Reexamination Certificate
active
06626374
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to high pressure cleaning apparatus, and more particularly to such apparatus providing two high pressure cleaning hoses fed by independent pumps driven by a common engine.
DESCRIPTION OF THE PRIOR ART
High pressure water is applied through flexible hoses to clean surfaces. A large water tank provides water to a three stage pump that generates water pressure over three thousand pounds/square inch. The pump feeds a long hose terminating in a cleaning wand with a manual control. The water may optionally be heated by a heater for enhanced cleaning. The power required to generate the intense pressure is provided by an internal combustion engine. Because of the great danger involved in handling the hose, the safety rules generally require that at least two people be present when the unit is in operation. The second person generally stands by with little to do. This is very wasteful of labor, making the cleaning operation more expensive.
SUMMARY OF THE INVENTION
It is accordingly an object of the invention to provide a high pressure cleaning apparatus that will not be so wasteful of labor, and make the operation less costly. It is an object of the invention to provide a high pressure cleaning apparatus that can allow the two persons who must be present during operation with their own high pressure hoses so that they can double the rate of cleaning without additional manpower. The apparatus of the invention provides a single water tank and engine that operates two separate high pressure pumps and hoses. The invention enables the same two workers to clean at double the rate of the prior art apparatus. The amount of water in the tank is the same required for cleaning a given area regardless of the rate of cleaning. There is a considerable saving in using one larger engine over two separate smaller engines.
REFERENCES:
patent: 3320895 (1967-05-01), Peterson et al.
patent: 3380658 (1968-04-01), Stasz et al.
patent: 3481544 (1969-12-01), Jackson
patent: 3831849 (1974-08-01), Studinger
patent: 4529127 (1985-07-01), Huszagh
patent: 4613074 (1986-09-01), Schulze
patent: 4821958 (1989-04-01), Shaffer
patent: 5170940 (1992-12-01), Salber
patent: 5533671 (1996-07-01), Baer
patent: 5694976 (1997-12-01), Frye-Hammelmann
patent: 5735461 (1998-04-01), Winther
patent: 5816499 (1998-10-01), Christiansen
patent: 6082630 (2000-07-01), Bohrer
patent: 6227460 (2001-05-01), Funk et al.
Blum Alvin S.
Mar Michael
Nguyen Dinh Q.
LandOfFree
Dual pump high pressure cleaning apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dual pump high pressure cleaning apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dual pump high pressure cleaning apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3042384