Manually controlled spraying installation and sprayer
AssigneeSames S.A.
InventorsPascal Bordaz, Laurent Giraud, Alain Monnier, Eric Prus
Life of this patent
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Abstract
An installation for spraying a coating product includes a manually controlled pneumatic sprayer operated by a trigger. The compressed air flowrate is varied according to the position of the trigger. The coating product feed system can include a gear pump driven at variable speed by a motor controlled by an electric signal representing the position of the trigger.
Claims14
Installation for spraying a coating product, including at least one manually controlled pneumatic sprayer, a positionable trigger on said at least one sprayer, variable flow rate means connected to said at least one sprayer, for feeding coating product to be sprayed thereby, a compressed air supply connected to said at least one sprayer for supplying air thereto, means for establishing the flowrate of said compressed air in response to the position of said trigger, a sensor responsive to the flowrate of said compressed air, and control means responsive to said sensor and operatively coupled to said variable flow rate means for causing the rate at which coating product is fed to said at least one sprayer to be substantially proportional to the rate at which said compressed air is supplied thereto.
Apparatus for spraying, comprising:
- (a) a spray nozzle;
- (b) a pump for delivering a first coating product to said nozzle;
- and
- (c) flow rate control means including a manually actuatable trigger for selectively connecting a compressed air supply to said nozzle, said control means being constructed and arranged so that actuation of said trigger effects the flow of air from said supply and the flow of said first product to said nozzle which mixes the air and the product into a mixture that is sprayed from the nozzle;
- (d) said control means including an air flow sensor for sensing the rate of flow of air to said nozzle, and pump control means responsive to said air flow sensor for controlling the operation of said pump such that the flow rate of said first product is substantially proportional to the flow rate of air.
Dependencies are inferred from the claim text.