Fluid sprinkling – spraying – and diffusing – Flow line or nozzle attached or carried handgrip or handle – Pistol grip type
Reexamination Certificate
2005-08-09
2005-08-09
Nguyen, Dinh Q. (Department: 3752)
Fluid sprinkling, spraying, and diffusing
Flow line or nozzle attached or carried handgrip or handle
Pistol grip type
C239S530000, C239S587100, C239S525000
Reexamination Certificate
active
06926213
ABSTRACT:
A power washer wand has a configuration which balances the forces of the water stream. By balancing these forces, the back pressure is greatly reduced. This results in less fatigue for the user and also enables the wand to be extended in order to reach high or distant surfaces without the use of a ladder or scaffold. The wand includes an angle changing coupling such as a swivel joint which allows the angle between the configuration that balances the forces (“force balancing configuration”) and the surface being washed to remain substantially constant. The angle changing coupling is preferably located at the proximal end of the force balancing configuration. In one version, the force balancing configuration is a loop or helix having a the first bend replaced with an angle changing coupling or a right angle fitting. In a second version, the force balancing configuration is a two-tined, fork-shaped divergent configuration which reconverges at a distal coupling, such as a “Y” coupling. An angle changing coupling is located at a proximal end to the divergent configuration. The wand may be longer than conventional wands and may be connected to an extension.
REFERENCES:
patent: 1779177 (1930-10-01), Long
patent: 2067044 (1937-01-01), Corley
patent: 2464366 (1949-03-01), Bakke
patent: 2998199 (1961-08-01), Miscovich
patent: 3023971 (1962-03-01), Milhous
patent: 3410493 (1968-11-01), Dion-Biro
patent: 3940072 (1976-02-01), Ishikawa
patent: 4043397 (1977-08-01), Glowienke
patent: 4216911 (1980-08-01), Huperz
patent: 4570854 (1986-02-01), Wernahrt
patent: 4607702 (1986-08-01), Miller
patent: 4674686 (1987-06-01), Trapp
patent: 4915419 (1990-04-01), Smith, III
patent: 5725322 (1998-03-01), Evans
patent: 5749526 (1998-05-01), Laabs et al.
patent: 5897061 (1999-04-01), Petty
patent: 5947388 (1999-09-01), Woodruff
patent: 6158677 (2000-12-01), Coles
patent: 6164570 (2000-12-01), Smeltzer
Kurtz Manufacturing, Inc. Brochure, pp. 7-8, “Telescopic Wands” and “Extension Wand Kit” , date unknown.
Water Cannon Product Catalog, p. 5, “Telescopic Wand” , date unknown.
The Fire Chief's Handbook, pp. 332-333, 344-345, and 348-349, date unknown.
Coles Charles
Nguyen Dinh Q.
Proskauer Rose LLP
LandOfFree
Power washer wand does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Power washer wand, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power washer wand will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3443514