The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 22, 2018
Filed:
Jun. 28, 2013
Yamaha Hatsudoki Kabushiki Kaisha, Shizuoka-ken, JP;
Tomoyasu Arai, Iwata, JP;
YAMAHA HATSUDOKI KABUSHIKI KAISHA, Shizuoka-ken, JP;
Abstract
The pressure of a gas supplied to a nozzle is stably controlled over a wide range. A first positive pressure supply pathway supplies the gas at a first positive pressure. A second positive pressure supply pathway supplies the gas at a second positive pressure that is lower than the first positive pressure. A nozzle connecting pathway is connected to the nozzle. A switch-over valve selectively switches between a first connected state in which the first positive pressure supply pathway is connected to the nozzle connecting pathway and a second connected state in which the second positive pressure supply pathway is connected to the nozzle connecting pathway. A valve controller controls the connected state of the switch-over valve and adjusts the pressure of the gas supplied to the nozzle within the range from the first positive pressure to the second positive pressure.