Title:
STEP VALVE
Document Type and Number:
Japanese Patent JPS6043715
Kind Code:
A
Abstract:
This invention relates to a pneumatically actuated stepping valve for an automatic control of inlets and outlets for a pneumatic fluid. Each stepping movement is performed in response to a feedback signal indicating that an operation controlled by the valve has been completed. A distributing disc is provided for selecting consecutive pairs of ports consisting of an inlet port and an outlet port each. The stepping valve consists mainly of plastic parts, which contain numerous bores and passages and can be made at low cost. In accordance with the invention the valve disc cooperates with a sealing piston, which in response to pressure applied to said piston establishes connections to through passages of the valve disc, whereas when the piston is pressure-relieved it will be urged by spring means to disengage the valve disc so that the latter will not be restrained by the piston during its stepping movement.
Inventors:
KAARU TORITSUTORAA
Application Number:
JP15113484A
Publication Date:
March 08, 1985
Filing Date:
July 20, 1984
Export Citation:
Assignee:
HENGSTLER KG
FESTO MASCHF STOLL G
FESTO MASCHF STOLL G
International Classes:
F15C3/00; F15B13/07; F16K11/06; G05B19/44; G05D16/00; (IPC1-7): F15C3/00; G05D16/00
Attorney, Agent or Firm:
Teruo Akimoto