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EP0211372A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Automatic spray gun

Assignee: Anest Iwata Corp
•
Filing: 1986-07-28
•
Granted: —
•
Expires: 2006-07-28
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Abstract

Abstract An automatic spray gun has liquid atomizing means (1) provided at the front end thereof, a needle valve (3) adapted to control the amount of a liquid jetted out from the atomizing means (1), and an air piston (4) received in a cylinder (5) at the rear end of the needle valve (5) and activated by means of compressed air. The spray gun is provided with distance measuring means (17) for judging the distance between the spray gun and an object to be sprayed which is positioned in front of the spray gun, and a solenoid valve (11) activated in response to an ON-OFF signal delivered from the distance measuring means (17), the solenoid valve (11) being disposed in an air passage (12) which extends from a compressed air supply source to the cylinder (5). Thus, the needle valve (3) is selectively opened and closed by controlling the solenoid valve (11) so as to start and stop a spraying operation automatically.

Inventors

  • 👤 Yoshio Matusita
  • 👤 Takeshi Mochizuki
  • 👤 Ikuya Shiraishi

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-04 17:52
CPC Classifications
B; B05; B05B; B05B9/00; B05B12/00; B05B12/08; B05B12/12; B05B12/124; B05B7/00; B05B7/02; B05B7/08; B05B7/0807; B05B7/0815

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 148 words
An automatic spray gun comprising: liquid atomizing means provided at the front end of said spray gun; a needle valve adapted to control the amount of a liquid jetted out from said atomizing means; an air piston secured to the rear end of said needle valve and received in a cylinder so that it is activated by means of compressed air; distance measuring means for judging the distance between said spray gun and an object to be sprayed which is positioned in front of said spray gun; and a solenoid valve activated in response to an ON-OFF signal delivered from said distance measuring means, said solenoid valve being disposed in an air passage which extends from a compressed air supply source to said cylinder, whereby said needle valve is selectively opened and closed by controlling said solenoid valve so as to start and stop a spraying operation automatically.
Claim 2
Dependent Claim 148 words
An automatic spray gun comprising: liquid atomizing means provided at the front end of said spray gun; a needle valve adapted to control the amount of a liquid jetted out from said atomizing means; an air piston secured to the rear end of said needle valve and received in a cylinder so that it is activated by means of compressed air; distance measuring means for judging the distance between said spray gun and an object to be sprayed which is positioned in front of said spray gun; and a solenoid valve activated in response to an ON-OFF signal delivered from said distance measuring means, said solenoid valve being disposed in an air passage which extends from a compressed air supply source to said cylinder, whereby said needle valve is selectively opened and closed by controlling said solenoid valve so as to start and stop a spraying operation automatically.
Claim 3
Dependent Claim 91 words
An automatic spray gun according to Claim 1, wherein said air piston is biased by a spring in the direction in which said needle valve closes said atomizing means, said air passage being connected to said cylinder in such a manner that the compressed air supplied through said air passage presses said piston in the direction counter to the biasing force applied by said spring, and said solenoid valve being adapted to selectively assume a position where it closes said air passage and a position where it opens said air passage.
Claim 4
Dependent Claim 26 words
An automatic spray gun according to Claim 2, wherein said atomizing means has an air nozzle, said air passage being also communicated with said air nozzle.

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