[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

EP0590339A1 - Distributeur - Google Patents

Distributeur Download PDF

Info

Publication number
EP0590339A1
EP0590339A1 EP93114071A EP93114071A EP0590339A1 EP 0590339 A1 EP0590339 A1 EP 0590339A1 EP 93114071 A EP93114071 A EP 93114071A EP 93114071 A EP93114071 A EP 93114071A EP 0590339 A1 EP0590339 A1 EP 0590339A1
Authority
EP
European Patent Office
Prior art keywords
connection
directional control
control valve
consumer
shaped piece
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
EP93114071A
Other languages
German (de)
English (en)
Other versions
EP0590339B1 (fr
Inventor
Helmut Ing. Ott
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.)
Herion Werke KG
Original Assignee
Herion Werke KG
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 Herion Werke KG filed Critical Herion Werke KG
Publication of EP0590339A1 publication Critical patent/EP0590339A1/fr
Application granted granted Critical
Publication of EP0590339B1 publication Critical patent/EP0590339B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/08—Assemblies of units, each for the control of a single servomotor only
    • F15B13/0803—Modular units
    • F15B13/0832—Modular valves
    • 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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves
    • 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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/08—Assemblies of units, each for the control of a single servomotor only
    • F15B13/0803—Modular units
    • F15B13/0821—Attachment or sealing of modular units to each other
    • F15B13/0825—Attachment or sealing of modular units to each other the modular elements being mounted on a common member, e.g. on a rail
    • 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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/08—Assemblies of units, each for the control of a single servomotor only
    • F15B13/0803—Modular units
    • F15B13/0878—Assembly of modular units
    • F15B13/0896—Assembly of modular units using different types or sizes of valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7879—Resilient material valve
    • Y10T137/7888—With valve member flexing about securement
    • Y10T137/789—Central mount
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/877—With flow control means for branched passages
    • Y10T137/87885—Sectional block structure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87917—Flow path with serial valves and/or closures
    • Y10T137/88054—Direct response normally closed valve limits direction of flow

Definitions

  • the invention relates to a directional control valve for compressed air, which is mounted in particular on a battery bar, with a housing in which a control slide is arranged, which controls the connection between an inlet connection, at least one consumer connection and at least one ventilation connection, with a between the ventilation connection and the consumer connection Throttle check valve is arranged.
  • the invention is therefore based on the object of equipping a directional control valve of the type mentioned at the outset in a simple, compact and space-saving design with a throttle check valve (or the required number of throttle check valves).
  • the throttle check valve is installed directly in the housing of the directional valve transversely to the longitudinal axis of the control slide.
  • a throttle check valve is provided for each consumer connection.
  • the throttle element and the check element of the throttle check valve consist of a single shaped piece, which is formed in particular from a flexible, elastic plastic material.
  • the fitting is advantageously fastened on the shaft of an adjusting screw, by means of which the flow cross section between the housing of the directional control valve and the fitting can be changed.
  • a step bore is expediently formed in the housing, one step of which together with the shaped piece forms the throttle element and the other step together with the shaped piece forms the check element.
  • the adjusting screw is expediently accessible from the outside, so that the throttle cross section of the throttle check valve can be changed even when the directional control valve is mounted on the battery strip. By fastening the fitting on the shaft of the set screw, the latter is secured against unscrewing.
  • Figure 1 shows a top view schematically shows two directional control valves 10 which are mounted side by side on a common connecting plate or battery strip 12. With such a design, all directional control valves 10 are connected to a common inlet line and to common ventilation lines.
  • FIG. 2 shows a cross section through one of the directional control valves 10 according to FIG. 1.
  • the directional control valve 10 according to FIG. 2 is mounted on a battery strip 12, through which an inlet line 72 and two ventilation lines 74, 76 extend, which are common to all directional control valves 10.
  • a control slide 14 is installed together with an associated seal set 16.
  • the control slide 14 is connected at each of its two axial ends to a working piston 44 and 46, the latter of which can be pressurized with compressed air via working connections 40, 42, whereby the control slide 14 is switched to the desired position.
  • a working piston 44 and 46 the latter of which can be pressurized with compressed air via working connections 40, 42, whereby the control slide 14 is switched to the desired position.
  • the operation of the directional control valve shown here is known and is therefore not described in detail.
  • An inlet connection 18 (which is connected to the inlet line 72) is formed in the housing 48, furthermore two consumer connections 24, 26 (the one to two consumers, which are not specified in any more detail) are connected), and two ventilation connections 32, 34 (which are connected to the ventilation lines 74, 76, respectively).
  • the inlet connection 18 opens into an inlet chamber 22, the consumer connections 24, 26 open out correspondingly in consumer chambers 28, 30 and the ventilation connections 32, 34 open out accordingly in ventilation chambers 36, 38.
  • the inlet chamber 22, the consumer chambers 28 and 30, and the ventilation chambers 36 and 38 are parts of the bore in which the control slide 14 is arranged to be axially movable.
  • a throttle check valve is installed between the consumer port 24 and the vent port 32 and also between the consumer port 26 and the vent port 34, the throttle check valve 50 between the consumer port 24 and the vent port 32 being shown in FIG.
  • the throttle valve 50 is arranged in the region of the ventilation chamber 36.
  • a bore 32 is formed in the housing 48, the axis of which extends transversely to the longitudinal axis of the control slide, and which is connected to the ventilation chamber 36.
  • the bore 52 is expanded to form a shoulder 54 to form a bore 56, the diameter of which is larger than that of the bore 52.
  • the bore 56 is connected to the vent connection 32.
  • the upper area of the bore 52 in FIG. 3 is designed as a threaded bore 58, into which an adjusting screw 60 is screwed, which is accessible and operable from the outside.
  • the adjusting screw 60 has a shaft 62 with a reduced diameter, on the lower end of which in FIG. 3 a shaped piece 64 attached, e.g. B. is held or clamped between two unspecified collars on the shaft 62.
  • the generally annular fitting 64 has a central bore and an annular lip 68 which, as shown, abuts the wall of the bore 56.
  • the shaped part expediently consists of a flexible, elastic plastic material, so that it can be pushed onto the shaft from the end of the shaft 62 via the outer collar until it engages between the two collars.
  • An annular gap 70 is formed between the shaped piece 64 and the shoulder 54, that is to say the annular edge between the bores 52 and 56.
  • the area of this annular gap that is to say the flow cross section between the housing 48 and the shaped piece 64, can be changed by the adjusting screw which is accessible from the outside and can thus be adjusted as required.
  • the compressed air flows back from the consumer connection 24 via the consumer chamber 28 and the ventilation chamber 36 to the ventilation connection 32 (as shown in FIG. 2), the air first flows through the annular gap 70 into the space 66, which is part of the bore 56 , whereupon the lip 68 of the fitting 64 is lifted off the wall of the bore 56 and opens the passage to the vent connection 32.
  • the compressed air can thus flow back from the consumer connection 24 to the vent connection 32, this backflow being able to be throttled as required by changing the throttle cross section.
  • a dynamic pressure occurs in the ventilation line 74 and the compressed air therefore tries to flow back through the throttle check valve in the opposite direction, i.e.
  • the lip 68 of the fitting 64 lies against the wall of the bore 56 and blocks the flow of compressed air in this direction. An undesired exposure to the consumer connected to the consumer connection 24 is thus prevented.
  • the fitting 64 thus forms (in connection with the housing 48) the throttle element and the check element of the throttle check valve 50.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Check Valves (AREA)
  • Valve Housings (AREA)
  • Multiple-Way Valves (AREA)
EP93114071A 1992-09-29 1993-09-02 Distributeur Expired - Lifetime EP0590339B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4232628A DE4232628A1 (de) 1992-09-29 1992-09-29 Wegeventil
DE4232628 1992-09-29

Publications (2)

Publication Number Publication Date
EP0590339A1 true EP0590339A1 (fr) 1994-04-06
EP0590339B1 EP0590339B1 (fr) 1996-11-13

Family

ID=6469135

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93114071A Expired - Lifetime EP0590339B1 (fr) 1992-09-29 1993-09-02 Distributeur

Country Status (4)

Country Link
US (1) US5400821A (fr)
EP (1) EP0590339B1 (fr)
JP (1) JPH06213342A (fr)
DE (2) DE4232628A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29711130U1 (de) * 1997-06-26 1997-08-28 Festo Kg, 73734 Esslingen Mehrwegeventil
EP0840018A3 (fr) * 1996-10-28 1999-05-12 Smc Corporation Vanne de transfert piloté avec 5 orifices.
EP0838596A3 (fr) * 1996-10-28 1999-05-12 Smc Corporation Vanne de transfert piloté avec 3 orifices.
EP0887559A3 (fr) * 1997-06-26 1999-05-19 FESTO AG & Co Distributeur à plusieurs voies
EP2335904A1 (fr) * 2009-12-21 2011-06-22 FESTO AG & Co. KG Soupape

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1271510B (it) * 1993-10-06 1997-05-30 Luciano Migliori Sottobase multipla per la distribuzione dell'aria a valvole pneumatiche
FR2757599B1 (fr) * 1996-12-23 1999-01-29 Ksb Sa Actionneur de robinet dans lequel la base du boitier est conformee de maniere a assurer les liaisons de distribution du fluide
DE19829530B4 (de) * 1998-07-02 2005-01-20 Hoerbiger Micro Fluid Gmbh Ventilanordnung
WO2015000496A1 (fr) * 2013-07-05 2015-01-08 Festo Ag & Co. Kg Vanne
EP2994674B1 (fr) * 2013-07-05 2016-09-14 Festo AG & Co. KG Vanne
CN103573733B (zh) * 2013-11-05 2016-01-27 龙工（上海）精工液压有限公司 一种用于液压马达的缓冲稳压阀
JP6819867B2 (ja) * 2017-02-16 2021-01-27 Smc株式会社 電磁弁用マニホールドベース及びそれを用いた電磁弁集合体
JP6684480B2 (ja) * 2017-05-17 2020-04-22 Smc株式会社 シリンダ駆動用マニホールド装置及びシリンダ駆動装置
DE102018221689B4 (de) * 2018-12-13 2022-05-12 Hawe Hydraulik Se Hydraulikventilsystem mit einem Ventilgehäuse

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2045464A5 (fr) * 1969-04-29 1971-02-26 Festo Maschf Stoll G
FR2324959A1 (fr) * 1975-09-19 1977-04-15 Atlas Copco Ab Soupape reglable de limitation d'ecoulement, notamment pour controler la vitesse d'un moteur pneumatique
FR2346582A1 (fr) * 1976-04-02 1977-10-28 Bouteille Daniel Dispositif perfectionne de distribution pour une installation pneumatique
DE2701654A1 (de) * 1977-01-17 1978-07-20 Brill Ingenieur Ges Mbh Aufbauplatte fuer hydraulische und pneumatische systeme
FR2511786A1 (fr) * 1981-08-21 1983-02-25 Climax France Sa Module regleur d'echappement pour un distributeur d'un fluide sous pression

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126795A (en) * 1964-03-31 -timed out
US4485846A (en) * 1982-02-24 1984-12-04 Mac Valves, Inc. Four-way valve with integral flow controls, common exhaust, and cartridge type pilot valve
US4550749A (en) * 1984-03-12 1985-11-05 C. R. Bard, Inc. Adjustable check valve
US4770209A (en) * 1987-07-23 1988-09-13 Mac Valves, Inc. Valve base with integral flow controls
DE3831554C2 (de) * 1988-09-16 1997-06-05 Rexroth Pneumatik Mannesmann Drosselrückschlagventil

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2045464A5 (fr) * 1969-04-29 1971-02-26 Festo Maschf Stoll G
FR2324959A1 (fr) * 1975-09-19 1977-04-15 Atlas Copco Ab Soupape reglable de limitation d'ecoulement, notamment pour controler la vitesse d'un moteur pneumatique
FR2346582A1 (fr) * 1976-04-02 1977-10-28 Bouteille Daniel Dispositif perfectionne de distribution pour une installation pneumatique
DE2701654A1 (de) * 1977-01-17 1978-07-20 Brill Ingenieur Ges Mbh Aufbauplatte fuer hydraulische und pneumatische systeme
FR2511786A1 (fr) * 1981-08-21 1983-02-25 Climax France Sa Module regleur d'echappement pour un distributeur d'un fluide sous pression

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0840018A3 (fr) * 1996-10-28 1999-05-12 Smc Corporation Vanne de transfert piloté avec 5 orifices.
EP0838596A3 (fr) * 1996-10-28 1999-05-12 Smc Corporation Vanne de transfert piloté avec 3 orifices.
US6109291A (en) * 1996-10-28 2000-08-29 Smc Corporation Pilot 5-port transfer valve
US6167901B1 (en) 1996-10-28 2001-01-02 Smc Corporation Pilot 3-port transfer valve
DE29711130U1 (de) * 1997-06-26 1997-08-28 Festo Kg, 73734 Esslingen Mehrwegeventil
EP0887559A3 (fr) * 1997-06-26 1999-05-19 FESTO AG & Co Distributeur à plusieurs voies
EP2335904A1 (fr) * 2009-12-21 2011-06-22 FESTO AG & Co. KG Soupape

Also Published As

Publication number Publication date
DE4232628A1 (de) 1994-03-31
JPH06213342A (ja) 1994-08-02
US5400821A (en) 1995-03-28
DE59304467D1 (de) 1996-12-19
EP0590339B1 (fr) 1996-11-13

Similar Documents

Publication Publication Date Title
DE4409252C2 (de) Luftfederungsanlage
EP0590339B1 (fr) Distributeur
CH656441A5 (de) Servo-schieberventil.
DE2709386A1 (de) In einer richtung wirkender durchflussbegrenzer
EP2084451B1 (fr) Distributeur de lubrifiant
DE1951869A1 (de) Steuerventil
DE2231217C2 (de) Hydraulische Steuervorrichtung zur lastunabhängigen Steuerung von hydraulisch betriebenen Einrichtungen
EP0263252A2 (fr) Accumulateur à compensation de température, en particulier pour la commande hydraulique de transmissions de véhicules à moteur
DE3320047C2 (fr)
DE102005003982A1 (de) Pneumatisches Wegeventil mit einem Ventilschieber
DE69923887T2 (de) Druckregelventil für ein Magnetventilaggregat und damit ausgerüstete Magnetventilanordnung
EP0887559B1 (fr) Distributeur à plusieurs voies
DE2639331C2 (de) Hydraulische oder pneumatische Drei-Wege-Weiche
DE3625058A1 (de) Ventil
DE2906670A1 (de) Ventileinrichtung zur lastkompensierten steuerung eines hydraulischen verbrauchers
EP1452744B1 (fr) Dispositif de contrôle hydraulique
DE3626043C2 (fr)
DE3844405A1 (de) Ventilanordnung fuer ein hydraulisches system
EP0879374B1 (fr) Distributeur
DE10004975C2 (de) Mehrstufiges hydraulisches Druckbegrenzungsventil
EP0740083A2 (fr) Vanne d'arrêt avec une piston de vanne distributrice
DE2435877C2 (de) Regelventil
DE9305980U1 (de) Pneumatikzylinder
DE69805082T2 (de) Druckkompensiertes durchflussventil
DE19625348A1 (de) Anordnung zur Ansteuerung eines hydraulisch betätigbaren Hauptventils

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT

17P Request for examination filed

Effective date: 19940420

17Q First examination report despatched

Effective date: 19950919

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19961113

Ref country code: GB

Effective date: 19961113

Ref country code: FR

Effective date: 19961113

REF Corresponds to:

Ref document number: 59304467

Country of ref document: DE

Date of ref document: 19961219

EN Fr: translation not filed
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19961113

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20000823

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020601