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:
Oct. 10, 1989
Filed:
Feb. 20, 1987
Wataru Yasukawa, deceased, late of Kobe, JP;
Masanori Kiyoshige, Akashi, JP;
Takeshi Horikawa, Kobe, JP;
Tomonobu Okada, Kobe, JP;
Tadafumi Ochi, Amagasaki, JP;
Yoshiaki Aoki, Osaka, JP;
Masahiko Higashida, Akashi, JP;
Takashi Kawashima, Akashi, JP;
Shigeki Koe, Kobe, JP;
Hideo Ono, Takasago, JP;
Kanta Nihei, Kobe, JP;
Syunji Takasugi, Kobe, JP;
Koji Take, Kobe, JP;
Kawasaki Jukogyo Kabushiki Kaisha, Hyogo, JP;
Abstract
For cutting sheet metal or other work by means of a jet of water containing abrasive particles, an abrasive water jet nozzle assembly is provided to which there are separately supplied highly pressurized water and an abrasive suspension. The abrasive suspension is such that abrasive particles with an average size of up to 100 microns are held in suspension in water. The abrasive suspension is introduced into the ejected water by virtue of a partial vacuum created in the nozzle assembly by the pressurized water. The nozzle assembly directs the resulting mixture as an abrasive water jet against the work for cutting thereof. Preferably, the abrasive water jet is recovered for recirculation back to the nozzle assembly as an abrasive suspension of controlled abrasive concentration. Various constructions of the nozzle assembly and various recovery systems are also disclosed.