EP0805470A3 - Device for causing motor stoppage on the basis of liquid delivery in jet washers - Google Patents

Device for causing motor stoppage on the basis of liquid delivery in jet washers Download PDF

Info

Publication number
EP0805470A3
EP0805470A3 EP97200887A EP97200887A EP0805470A3 EP 0805470 A3 EP0805470 A3 EP 0805470A3 EP 97200887 A EP97200887 A EP 97200887A EP 97200887 A EP97200887 A EP 97200887A EP 0805470 A3 EP0805470 A3 EP 0805470A3
Authority
EP
European Patent Office
Prior art keywords
piston
basis
liquid delivery
causing motor
electrode
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP97200887A
Other languages
German (de)
French (fr)
Other versions
EP0805470A2 (en
EP0805470B1 (en
Inventor
Maurizio Magri
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Annovi Reverberi SpA
Original Assignee
Annovi Reverberi SpA
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 Annovi Reverberi SpA filed Critical Annovi Reverberi SpA
Publication of EP0805470A2 publication Critical patent/EP0805470A2/en
Publication of EP0805470A3 publication Critical patent/EP0805470A3/en
Application granted granted Critical
Publication of EP0805470B1 publication Critical patent/EP0805470B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/38—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by piston and cylinder

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Separation Of Particles Using Liquids (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

The device comprises a piston (17) sensitive to the pressure difference between the upstream and downstream side of the valving element for the pressurized water flow to the delivery lance.
Said piston (17) is connected, in series therewith, into a low voltage electrical circuit which is closed and respectively opened by the movements of said piston, said movements bringing it into contact with, and respectively withdrawing it from, an electrode (19), an electronic circuit (260) being provided which, in response to contact between the piston (17) and the electrode (19) energizes an electrical switch to open the power circuit of the jet washer electric motor.
EP97200887A 1996-04-29 1997-03-24 Device for causing motor stoppage on the basis of liquid delivery in jet washers Expired - Lifetime EP0805470B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT96RE000026A IT1287638B1 (en) 1996-04-29 1996-04-29 ENGINE STOP CONTROL DEVICE ACCORDING TO THE DELIVERY OF LIQUID IN HIGH PRESSURE WASHERS
ITRE960026 1996-04-29

Publications (3)

Publication Number Publication Date
EP0805470A2 EP0805470A2 (en) 1997-11-05
EP0805470A3 true EP0805470A3 (en) 2000-10-25
EP0805470B1 EP0805470B1 (en) 2006-03-22

Family

ID=11398865

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97200887A Expired - Lifetime EP0805470B1 (en) 1996-04-29 1997-03-24 Device for causing motor stoppage on the basis of liquid delivery in jet washers

Country Status (4)

Country Link
EP (1) EP0805470B1 (en)
AT (1) ATE321351T1 (en)
DE (1) DE69735519T2 (en)
IT (1) IT1287638B1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4278856A (en) * 1979-06-29 1981-07-14 Owens Charles A Fluid pressure indicator switch apparatus
US4435127A (en) * 1980-10-02 1984-03-06 Kraenzle Josef Apparatus with latching effect for limiting pressure in liquid feeding systems
DE3936155A1 (en) * 1989-10-31 1991-05-02 Kraenzle Josef Water jet cleaning pump control - has control valve that responds to pressure limit signal to shut off pump
DE4221286A1 (en) * 1991-07-05 1993-01-07 Annovi & Reverberi S P A Automatic switching device for motor-pump unit - uses sensor to detect overpressure at output of pump to operate microswitch

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4278856A (en) * 1979-06-29 1981-07-14 Owens Charles A Fluid pressure indicator switch apparatus
US4435127A (en) * 1980-10-02 1984-03-06 Kraenzle Josef Apparatus with latching effect for limiting pressure in liquid feeding systems
DE3936155A1 (en) * 1989-10-31 1991-05-02 Kraenzle Josef Water jet cleaning pump control - has control valve that responds to pressure limit signal to shut off pump
DE4221286A1 (en) * 1991-07-05 1993-01-07 Annovi & Reverberi S P A Automatic switching device for motor-pump unit - uses sensor to detect overpressure at output of pump to operate microswitch

Also Published As

Publication number Publication date
EP0805470A2 (en) 1997-11-05
ATE321351T1 (en) 2006-04-15
EP0805470B1 (en) 2006-03-22
ITRE960026A1 (en) 1997-10-29
ITRE960026A0 (en) 1996-04-29
DE69735519T2 (en) 2006-08-24
DE69735519D1 (en) 2006-05-11
IT1287638B1 (en) 1998-08-06

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