TW200514943A - Directly operated pneumatic valve having an air assist return - Google Patents

Directly operated pneumatic valve having an air assist return

Info

Publication number
TW200514943A
TW200514943A TW092129292A TW92129292A TW200514943A TW 200514943 A TW200514943 A TW 200514943A TW 092129292 A TW092129292 A TW 092129292A TW 92129292 A TW92129292 A TW 92129292A TW 200514943 A TW200514943 A TW 200514943A
Authority
TW
Taiwan
Prior art keywords
valve
valve body
pneumatic valve
valve member
directly operated
Prior art date
Application number
TW092129292A
Other languages
Chinese (zh)
Other versions
TWI240050B (en
Inventor
Robert Neff
Original Assignee
Mac Valves Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US10/150,291 external-priority patent/US6772791B2/en
Application filed by Mac Valves Inc filed Critical Mac Valves Inc
Publication of TW200514943A publication Critical patent/TW200514943A/en
Application granted granted Critical
Publication of TWI240050B publication Critical patent/TWI240050B/en

Links

Landscapes

  • Fluid-Driven Valves (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Actuator (AREA)
  • Magnetically Actuated Valves (AREA)
  • Multiple-Way Valves (AREA)

Abstract

A direct operated valve assembly (10, 210, 310) is provided including a valve body (12, 212, 312) having a pressurized inlet port (30, 230, 330) in communication with a source of pressurized air, a cylinder port (32, 232, 332), a valve bore (36, 236, 336) extending axially within the valve body, and a valve member (46, 246, 346) supported within the valve bore and movable between predetermined positions within the valve bore to selectively direct pressurized air from said inlet port through the cylinder port. An actuator (14, 214, 314) is mounted to the valve body for moving the valve member in a first direction and a biasing member (66, 266, 366) is disposed between the valve member (46, 246, 346) and the valve body (12, 212, 312) to provide a biasing force to the valve member in an opposite direction. Also, an air-assist passage (94, 294, 394) is included for providing a source of pneumatic pressure that acts in combination with the biasing member (66, 266, 366) to operatively move the valve member (46, 246, 346) in a direction opposite to the movement induced by the actuator (14, 214, 314).
TW92129292A 2002-05-17 2003-10-22 Directly operated pneumatic valve having an air assist return TWI240050B (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US10/150,291 US6772791B2 (en) 2002-05-17 2002-05-17 Directly operated pneumatic valve having an air assist return
EP20020257769 EP1363054B1 (en) 2002-05-17 2002-11-08 Directly operated pneumatic valve having an air assist return
CA 2411639 CA2411639C (en) 2002-05-17 2002-11-08 Directly operated pneumatic valve having air assist return
CNB021548196A CN100467879C (en) 2002-05-17 2002-12-02 Directly operated pneumatic valve having an air assist return
JP2003139974A JP4490652B2 (en) 2002-05-17 2003-05-19 Direct acting air valve with air auxiliary return

Publications (2)

Publication Number Publication Date
TW200514943A true TW200514943A (en) 2005-05-01
TWI240050B TWI240050B (en) 2005-09-21

Family

ID=37007638

Family Applications (1)

Application Number Title Priority Date Filing Date
TW92129292A TWI240050B (en) 2002-05-17 2003-10-22 Directly operated pneumatic valve having an air assist return

Country Status (1)

Country Link
TW (1) TWI240050B (en)

Also Published As

Publication number Publication date
TWI240050B (en) 2005-09-21

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Legal Events

Date Code Title Description
MK4A Expiration of patent term of an invention patent