SE9701523D0 - Two-hand control system for a pressurized fluid flow - Google Patents

Two-hand control system for a pressurized fluid flow

Info

Publication number
SE9701523D0
SE9701523D0 SE9701523A SE9701523A SE9701523D0 SE 9701523 D0 SE9701523 D0 SE 9701523D0 SE 9701523 A SE9701523 A SE 9701523A SE 9701523 A SE9701523 A SE 9701523A SE 9701523 D0 SE9701523 D0 SE 9701523D0
Authority
SE
Sweden
Prior art keywords
unit
power
drive
accumulator
delivers
Prior art date
Application number
SE9701523A
Other languages
Swedish (sv)
Other versions
SE507552C2 (en
SE9701523L (en
Inventor
Uwe Wetzel
Nils Svensson
Original Assignee
Rudolf Westerberg Ab
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
Application filed by Rudolf Westerberg Ab filed Critical Rudolf Westerberg Ab
Priority to SE9701523A priority Critical patent/SE9701523L/en
Publication of SE9701523D0 publication Critical patent/SE9701523D0/en
Priority to EP98850062A priority patent/EP0874163A3/en
Publication of SE507552C2 publication Critical patent/SE507552C2/en
Publication of SE9701523L publication Critical patent/SE9701523L/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
    • F15B20/001—Double valve requiring the use of both hands simultaneously

Abstract

A pneumatic double two-channel drive system for a pneumatic linear power unit (10) is redundant and each movement of all components that may seriously malfunction is monitored. The system comprises two essentially identical units (1, 1') where each unit includes a drive device that is actuated by a control signal, for instance a drive signal generated by respective hands of the operator. The drive device (3) of one unit (1) delivers a start pulse and a holding signal for a power valve (6, 6') in the other unit (1") and vice versa. Each of the two power valves (6, 6') drives a monitoring valve (7, 7') and controls the supply of fluid to the power unit (10). Each unit includes an accumulator (4, 4') which is adapted to be charged when the system is at rest and discharged by actuation of respectice drive devices (3, 3'). The accumulator (4, 4') delivers a start pulse of limited duration, for actuation of one of the power valves. The system is connected to permit activation of the power unit (10) solely when the control pulses are delivered essentially simultaneously. <IMAGE>
SE9701523A 1997-04-23 1997-04-23 Tvåhandsmanöversystem SE9701523L (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE9701523A SE9701523L (en) 1997-04-23 1997-04-23 Tvåhandsmanöversystem
EP98850062A EP0874163A3 (en) 1997-04-23 1998-04-23 A double two-channel drive system for a pressurized fluid flow

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9701523A SE9701523L (en) 1997-04-23 1997-04-23 Tvåhandsmanöversystem

Publications (3)

Publication Number Publication Date
SE9701523D0 true SE9701523D0 (en) 1997-04-23
SE507552C2 SE507552C2 (en) 1998-06-22
SE9701523L SE9701523L (en) 1998-06-22

Family

ID=20406693

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9701523A SE9701523L (en) 1997-04-23 1997-04-23 Tvåhandsmanöversystem

Country Status (2)

Country Link
EP (1) EP0874163A3 (en)
SE (1) SE9701523L (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE512859C2 (en) * 1999-05-07 2000-05-22 Rudolf Westerberg Ab Duplicated two-channel, pneumatic control system
US8679241B2 (en) 2006-10-30 2014-03-25 Novartis Ag Gas pressure monitor for pneumatic surgical machine
US8162000B2 (en) 2006-12-13 2012-04-24 Novartis Ag Adjustable pneumatic system for a surgical machine
US9241830B2 (en) 2006-12-15 2016-01-26 Novartis Ag Pressure monitor for pneumatic vitrectomy machine
US8312800B2 (en) 2006-12-21 2012-11-20 Novartis Ag Pneumatic system for a vitrector
US8080029B2 (en) 2007-09-21 2011-12-20 Novartis Ag System for actuation of a vitreous cutter
CA2770487C (en) 2009-08-31 2018-01-09 Jiansheng Zhou Pneumatic pressure output control by drive valve duty cycle calibration
US8666556B2 (en) 2009-12-10 2014-03-04 Alcon Research, Ltd. Systems and methods for dynamic feedforward
CA2781157C (en) 2009-12-10 2018-01-02 Alcon Research Ltd. Systems and methods for dynamic pneumatic valve driver
US8821524B2 (en) 2010-05-27 2014-09-02 Alcon Research, Ltd. Feedback control of on/off pneumatic actuators
US8808318B2 (en) 2011-02-28 2014-08-19 Alcon Research, Ltd. Surgical probe with increased fluid flow
US9060841B2 (en) 2011-08-31 2015-06-23 Alcon Research, Ltd. Enhanced flow vitrectomy probe
US10070990B2 (en) 2011-12-08 2018-09-11 Alcon Research, Ltd. Optimized pneumatic drive lines

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1426512B2 (en) * 1964-02-13 1971-10-07 Henon Werke KG, 7012 Fellbach SERVO CONTROL FOR A PRESSURE CONSUMER IN PARTICULAR FOR THE CLUTCH OR BRAKE OF A PRESS DRIVE
DE9014789U1 (en) * 1990-10-25 1991-02-07 Herion-Werke Kg, 7012 Fellbach, De
US5113907A (en) * 1991-01-29 1992-05-19 Ross Operating Valve Company Dynamic self-monitoring air operating system
DE9202938U1 (en) * 1992-03-05 1992-05-07 Herion-Werke Kg, 7012 Fellbach, De
DE9406561U1 (en) * 1994-04-20 1994-07-14 Herion Werke Kg Safety valve

Also Published As

Publication number Publication date
SE507552C2 (en) 1998-06-22
SE9701523L (en) 1998-06-22
EP0874163A2 (en) 1998-10-28
EP0874163A3 (en) 1999-03-17

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