Fluid sprinkling – spraying – and diffusing – Liquid sprayer for transparent panel
Patent
1998-12-21
2000-11-28
Weldon, Kevin
Fluid sprinkling, spraying, and diffusing
Liquid sprayer for transparent panel
239492, B05B 110
Patent
active
061523844
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD OF THE INVENTION
The object of the invention is a spraying device for windscreen washer nozzles of automobile vehicles.
BACKGROUND OF THE INVENTION
Known in the art are an extensive variety of embodiments of nozzles for windscreen washer installations of automobile vehicles which, in general, include a nozzle body fixed to the bodywork of the vehicle, frequently to the bonnet, and means to project the cleaning liquid which essentially consist in a ball mounted with a snug fit in a cavity of the nozzle body, which ball has a through-orifice with a conical cleaning-liquid intake mouth and can be rotated in any direction between the directions normally used for suitable projection of said liquid against the windscreen. The usual practice for the cleaning of windscreens is to fit two nozzles which act simultaneously.
In known embodiments of nozzles such as those described above, the projection of cleaning liquid consists in a jet of relatively high flow and pressure which reaches the windscreen at a point determined by the position of the ball, which mode of projection has the disadvantages detailed below. The volume of cleaning liquid used in each cleaning operation is relatively high, which leads to a situation in which, in order to make provision for a certain number of windscreen cleaning operations between consecutive refillings of the cleaning liquid reservoir fitted ex-works to the automobile vehicles, said reservoirs have to be of considerable volume, which is a significant obstacle to situating them in the engine compartment. This difficulty of situation is accentuated where, for reasons or volume or any other reasons, the cleaning liquid reservoir cannot be situated in said engine compartment, but has instead to be situated in zones of the vehicle bodywork which at least raise problems of installation, of access to electrical pumps for propelling the cleaning liquid, of passage of tubes, etc., which in any case increase both fitting and maintenance costs.
Means for projecting liquid by spraying are known. The patent document FR-A-1355350 discloses a spray head for pressurized containers in which there is an outlet chamber feeded through conducts tangentially disposed; the admission of the pressurized liquid produces a swirl in said chamber. Patent document U.S. Pat. No. 3,625,437 describes a spray head in which there is a perimetral inlet chamber communicating with an outlet chamber through tangential conducts. The devices described in both documents, FR-A-1355350 and U.S. Pat. No. 3,625,437, produce a swirl of the fluid which is not applicable to the projection of cleaning liquid on a vehicle windscreen.
EXPLANATION OF THE INVENTION
A spraying device of new structure and mode of operation for windscreen washer nozzles of automobiles is made known herein in order to provide a solution for the disadvantages deriving from the high consumption of cleaning liquid of the known embodiments of nozzles equipped with ball-type liquid-propulsion means.
The spraying device of the invention has a nozzle body of a shape suited to each specific case of application, preferably made of plastic material, which nozzle body has means for exterior attachment thereof to the bodywork of the vehicle and means to receive a cleaning liquid tube.
The nozzle device of the invention is characterized in that it includes a spraying body and a fixing body which can be coupled coaxially to each other and to the nozzle body, in which: its ends and having on its internal side face and running from the edge of the open end a plurality of regularly distributed longitudinal ribs which extend up to the interior face or bottom of the closed end, and in that bottom end and running from the centre of same a plurality of grooves which extend up to the internal side face between corresponding and adjacent longitudinal ribs, and at the closed end a through-orifice in centred position; ends, the exterior end, a coaxial groove of U-shaped cross-section designed to receive with a snug fit the open end of the spraying body a
REFERENCES:
patent: 3625437 (1971-12-01), Garrigou
patent: 4076174 (1978-02-01), Volgel et al.
patent: 4322037 (1982-03-01), Heeb et al.
patent: 5711488 (1998-01-01), Lund
patent: 5738282 (1998-04-01), Grogan
Elvira Peralta Juan Jesus
Lopez Miguel Mota
Fico Transpar, S.A.
Striker Michael J.
Weldon Kevin
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