Compressed fluid spraying pistol

Details Compressed fluid spraying pistol Compressed fluid spraying pistol

1981-12-28

1986-01-07

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

Including supply holder for material

Fluid pressure discharge means

239375, B05B 730

Patent

active

045629650

DESCRIPTION:

BRIEF SUMMARY
STATE OF ART

In conventional spraying pistols according to the head part of claim 1 the nozzle ejecting the spray substance is an integral part of the body of the pistol with its spraying head and said body is provided with a threaded pipe for screw connection to a tank for the spray substance. Plastics as spray substance for a quick hardening after spraying on are intensively mixed immediately before spraying with a hardening agent. After operation the pistol as well as the tank must be cleaned thoroughly to hinder contamination and occlusion by hardening of the spraying substance. This work is circumstantial and time-consuming. Furthermore, essential difficulties often result from slovenly cleaning.


PROBLEM

The problem of the present invention is to provide a spraying pistol, the application of which is not loaded with problems of cleaning after application.


SOLUTION OF THE PROBLEM

This problem has been solved inventively by that the body of the pistol is provided with a socket arranged concentrically to said nozzle for insertion of said nozzle-tank-units. Thereby, the possibility is given to coordinate the entire surface of the pistol which is wet by the spraying substance to an encasing body which after application can be replaced by an equal unit. Moreover, it is possible to construct such a unit so simple and inexpensive that it is possible to renounce the repeated use and to throw it away after consumption of its contents, although it may be possible to deliver such emptied units to a cleaning procedure which may be performed independent of the unit of work.
The inventive encasing unit besides the tank for the spraying substance encloses the spraying nozzle which is connected to it. Both parts may be integrated into a one-piece body preferably made of plastics. In order to open it, the nozzle may be provided with a needle which is shiftable into its open position against the pressure of a closing spring. Preferably the body of the pistol is provided with a slipshoe-like seat (slipper seat) as socket for the insertion of the encasing unit with its foot which is provided with an adequate foot with a sole and heel. This seat may have a stop for the front side of the nozzle part. For application the user has merely to insert the encasing unit which is delivered with the spraying substance and has to bring in the hardening agent before application. For this purpose a portion of a hardening agent may be added within an auxiliary receptacle. Preferably the encasing unit is formed in such a manner that the auxiliary receptacle is attached to it. The cover of the tank may serve as a bracket for the auxiliary receptacle.


DESCRIPTION OF AN EMBODIMENT

An embodiment of the invention is shown in the accompanying drawings, wherein
FIG. 1 is showing a side view of a spraying pistol according to the invention,
FIG. 2 in a larger scale a square section of a spraying head of the pistol as shown in FIG. 1,
FIG. 3 the pistol of FIG. 1 in exploded view,
FIG. 4 a top view of the pistol in FIG. 1, without spray-substance-inset,
FIG. 5 a top view of the pistol-body in FIG. 3,
FIG. 6 a top view of the looking cap in FIG. 3,
FIG. 7 an exploded view of the inset, and
FIG. 8 in a larger scale a partial front view of the pistol in FIG. 1.
The spraying pistol shown in the drawing serves for application of hardening fluids (spraying substances) and especially a mixture of plastics and a hardening agent onto surfaces by help of a spraying nozzle 6 which is connected to a tank 3 for the spraying substance. It consists essentially of a pistol body 1 with a spraying head 2 which is connected to the tank for the spraying substance and is connectable to a compressed-air source by a feed pipe 4.
The spraying head 2--see especially FIG. 2--includes the nozzle 6, the jet orifice 7 of which in state of rest is closed by the tip of a nozzle needle 8 and is opened by drawing backwards said needle. Within the body 1 channels 9 are provided which join into a distribution chamber 10 surrounding the front end of nozzle 6. This chamber 1

REFERENCES:
patent: 3003704 (1961-10-01), Roche
patent: 3236459 (1966-02-01), McRitchie

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