Patents Assigned to Nippon Light Metal Co., Ltd.
  • Pinch valve for a closed container
    Patent number: 4269333
    Abstract: A normally closed container containing liquid therein and having a single pinch valve secured thereto. The pinch valve releasably clamps a portion of a resilient liquid discharge tube and also releasably clamps a portion of a resilient inlet tube which introduces air into the container in discharging liquid out of the container. The timing of opening and closing of two tubes with respect to operation of the pinch valve is determined as desired.
    Type: Grant
    Filed: July 31, 1978
    Date of Patent: May 26, 1981
    Assignees: Asahi Malleablt Iron, Co., Ltd., Nippon Light Metal Co., Ltd.
    Inventors: Kiyoshi Nakai, Hidenobu Miyajima, Syuji Harada
  • Method for forming colorless or colored pattern having shade difference on an aluminum or aluminum alloy article
    Patent number: 4066516
    Abstract: Colored pattern having shade difference on an aluminum or aluminum alloy article is formed by anodically oxidizing said article in a conventional manner, and applying the anodically oxidized aluminum or aluminum alloy article to a voltage 5-190 V higher than the voltage applied in the anodic oxidation at a portion corresponding to the pattern in an electrolytic bath to increase thickness of barrier layer and then coloring the thus treated article in a solution containing a metal salt.
    Type: Grant
    Filed: June 11, 1976
    Date of Patent: January 3, 1978
    Assignee: Nippon Light Metal Co., Ltd.
    Inventor: Toshihiko Sato