US3891182A - Arrangement for maintaining a shiftable member in a plurality of shifted positions - Google Patents

Arrangement for maintaining a shiftable member in a plurality of shifted positions Download PDF

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Publication number
US3891182A
US3891182A US407256A US40725673A US3891182A US 3891182 A US3891182 A US 3891182A US 407256 A US407256 A US 407256A US 40725673 A US40725673 A US 40725673A US 3891182 A US3891182 A US 3891182A
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US
United States
Prior art keywords
arresting
arresting element
recess
sliding surface
passage
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.)
Expired - Lifetime
Application number
US407256A
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English (en)
Inventor
Gunther Schwerin
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Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
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Publication of US3891182A publication Critical patent/US3891182A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
    • F16K11/0704—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides comprising locking elements
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G5/00—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member
    • G05G5/06—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member for holding members in one or a limited number of definite positions only
    • G05G5/065—Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member for holding members in one or a limited number of definite positions only using a spring-loaded ball
    • 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
    • Y10T137/86485—Line condition change responsive release of valve
    • 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
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20576—Elements
    • Y10T74/20636—Detents

Definitions

  • a housing member has an interior passage and a slide Germany member is located in this passage and shiftable axially [721 Filed: Oct 17 1973 of the same between an arrest and at least one further position.
  • An assembly is also located in this passage [21 1 Appl. No.: 407,256 and includes a slidable control member which contacts the slide member and a biasing spring which biases the control member into such contact.
  • a sec- 251/297; 74/527 ond recess is formed in the control member and adapted to have the element snap mm and out of it.
  • l58l Fleld of Search 251/297 i g% The second recess is at least in part bounded by a flanking surface having a first portion which engages the arresting element when the slide member is in the lsfil References rest position thereof, and which first portion includes UNlTED STATES PATENTS a first angle with the longitudinal axis of the passage. 3,088.48) 5/l963 Stacey 251/297 X
  • the flanking surface further has a second portion 3l28.
  • the present invention relates generally to an arrangement for maintaining a slidable member in different positions thereof. More particularly. the invention relates to such an arrangement which is especially suitable for maintaining the slidable valve member of a slide valve in such different positions.
  • the groove is bounded by a flanking surface, that is by one side surface, which is inclined to the longitudinal axis of the slidable valve member at an angle which is coordinated with a similar angle of a flanking surface which in part bounds a recess in a housing accommodating these members.
  • a flanking surface that is by one side surface, which is inclined to the longitudinal axis of the slidable valve member at an angle which is coordinated with a similar angle of a flanking surface which in part bounds a recess in a housing accommodating these members.
  • One or more spherical members are accommodated in this recess and when the valve member is to be returned from its rest position into another position, i.e., a neutral position, a force exerted by the spherical members against the housing produces a friction which counteracts the biasing forcerof the spring. This friction, however is undesirable.
  • An additional object of the invention is to provide such an improved arrangement which is simple in its construction.
  • one feature of the inven tion resides, in an arrangement of the character described herein. in a combination which comprises a housing member having an interior passage and a slide member which is located in this passage and shiftable axially of the latter between a first and at least one further position.
  • An assembly is also located in this passage and includes a slidable control member contacting the slide member, and a biasing spring biasing the control member into such contact.
  • a first recess is formed in one of the members, and an arresting element of circular cross section is received in this first recess and in part projects from the same.
  • a second recess is formed in the control member and adapted to have the element snap in and out of it.
  • This second recess is at leastin part bounded by a flanking surface having a first portion which engages the arresting element when the slide member is in the first position, and which includes a first angle with the longitudinal axis of the passage. F urther, the flanking surface has a second portion which engages the arresting element when. the slide member is in the further position and which includes with the longitudinal axis a larger, second angle.
  • This construction assures that the portion-of the flanking surface which cooperates with the arresting member when the slide member is in the firstposition thereof, can be so constructed that on the one hand, the desired reliability of retention in the first position is achieved, whereas on the other hand, that portion of the flanking surface which cooperates with the arresting member when the slide member is in its one or more further positions, is so selected that minimum friction will develop, so that the spring can rapidly restore the slide member to its initial position.
  • This advantage is due to the fact that in the arresting and nonarresting positions, the arresting member assumes different positions in its recess, so that a single flanking surface can be provided with two portions ,as mentioned above, which include different angles with the longitudinal axis of the passage and the slide member.
  • FIG. 1 is a longitudinal section through one embodiment of theinvention
  • FIG. 2 is an enlarged fragmentary sectional detail view, showing a detail of FIG. I;
  • FIG. 3 is a view similar'to FIG. 2 but illustrating the same detail of a prior'art arrangement;
  • FIG. 4 is an axial section through a further embodiment of the invention.
  • FIG. 5 is an axial section through still an additional I embodiment of the invention.
  • reference numeral 10 identifies an only diagrammatically illusticulated to a lever 16 which is pivoted to an arm. of'
  • the member 21 is further provided with an annular circumferential groove 24' of triangular cross section. That end of the member 13 which is adjacent the portion 18 is provided. with a blind bore 25 from which a plurality of radial bores 26 extend outwardly, each'of theseiaccommodating an arresting 'element'27 in form of a ball. .
  • the diameter of the ball27 is so selected that it can slide in the radial bore 26 with a'slight pIay.-- I
  • a bolt 28 is guided in the bore 25 with slight'axial play as long as the memberi13 is not 'inits arrested or "rest position.
  • The, circumference of the bolt 28 is provided with a circumferential annular groove 29 which, as shown more clearly in FIG. '2, is bonded in part by a flan'king surface3l.
  • the surface 31 hasa first portion 32 and-an adjacent second portion 33.
  • the first portion 32 includes with the longitudinal axis of the member 13 a first angle 34
  • :the second portion 33 includes with the same axis a second. but larger angle 35.
  • the angle which is included by an associated cooperating flanking surface of the groove 24 with the same longitudinal "axis of'the memberl3, is also larger than the first angle 34.
  • the bolt 28 is provided at its end facing away from the housing ll with the shoulder 36 w hich is engaged by a'plate37.
  • 'A further plate 38 engages a retaining ring 41 atthe reduced-diameter free endof the bolt '28,-
  • the balls 27 are located in such a manner that they engagethe flanking surface 31 only at the portion 32 thereof.
  • FIG. 2 shows that a force P which is exerted by the spring 39 upon the bolt 28 (disregarding for this purpose the frictional forces) will act upon the balls 27 with the force components P P and P
  • the force component P which is responsible for the frictional forces amounts in FIG. 1 to 35% of the force P. Comparing this with the prior-art embodimentwhich is illustrated in FIG-3, it will be seen that in this prior-art embodiment a corresponding force component P, equals of the force P, because the flanking surface 42 cannot be inclined more beyond what is shown in FIG. 3 for reasons of reliable engagement with the ball 27, and is straight.
  • FIG. 5 finally shows still another embodiment of the invention; this embodiment is of. the single-acting type as'oppo's'ed' to the embodiment in FIG. 4 which is of the double-acting type.
  • the arrangement in FIG. 5 is designated in toto-with reference numeral 60 and utilizes a spring-biased member 62 which is biased by a spring 61 and acts upon balls 63, which are guided in a stationary member 64 and cooperate with the slide member 65 corresponding to the member 13 in FIG. 1.
  • the operation is the same in'FIGS. 1 and 2, especially with respect to the flanking surfaces.
  • flanking surface-could also be provided with a curved shape for the portions 32 and 33, instead of the illustratedstraight shape. It is also possible to use cylindrical rolls instead of the illustrated balls.
  • the groove 29 can be readily and inexpensively produced by conventional material-removing techniques.
  • a combination comprising a housing bounding an interior passage having a longitudinal axis; a first member coaxially accommodated in said passage and having an axially extending first sliding surface and an annular free end portion provided with at least one radially extending through hole; a second member coaxially accommodated in said passage and having an axially extending second sliding surface contacting said first sliding surface and provided with at least one arresting recess, one of said first and second members being stationary with respect to said housing and the other being mounted for movement with respect to said one member so that said sliding surfaces slide on one another; at least one arresting element of circular cross section received in said radial through hole and displaceable therein and having a diameter exceeding the length of the latter; means for moving said other member between at least one arresting position in which said through hole faces said arresting recess and said arresting element is partially received in the latter, and a rest position in which said through hole faces said second sliding surface and said arresting element bears against the same; a third member
  • a combination comprising a housing bounding an interior passage having a longitudinal axis; a first membercoaxially m'ounted'in' said passage for axial movement with respect to, said housing and having an axially extending first sliding surface and an annular free end portion provided with at least one radially extending through hole; a second member rigidly connected to said housing and coaxially accommodated in said passage and having an axially extending second sliding surface contacting said first sliding surface and provided with at least one arresting recess; at least one arresting element of circular cross section received in said radial through hole and displaceable therein and having a diameter exceeding the length of the latter; means for moving said first member between at least one arresting position in which said arresting element is partially received in said arresting recess, and a rest position in which said arresting element bears against said second sliding surface; a third member coaxially accommodated in said passage so as to have a limited degree of movement relative to said first member proportionate to the displacement of said arrest
  • a combination comprising a housing bounding an interior passage having a longitudinal axis; a first member rigidly and coaxially attached to said housing and having an axially extending first sliding surface and an annular free end portion provided with at least one radially extending through hole; a second member mounted in said passage for coaxial movement with respect to said housing and having an axially extending second sliding surface contacting said first sliding surface and provided with an arresting recess; at least one arresting element of circular cross section received in said radial through hole and dis placeable therein and partially projecting radially outwardly therefrom; means for moving said second mem- -axially accommodated in said passage so as to have a limiteddegrce of movement relative to said first mem' ber proportionate to the displacement of said arresting element.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Preventing Unauthorised Actuation Of Valves (AREA)
  • Multiple-Way Valves (AREA)
  • Sliding Valves (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Bearings For Parts Moving Linearly (AREA)
US407256A 1972-11-11 1973-10-17 Arrangement for maintaining a shiftable member in a plurality of shifted positions Expired - Lifetime US3891182A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2255270A DE2255270C3 (de) 1972-11-11 1972-11-11 Rast- und Rückstelleinrichtung

Publications (1)

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US3891182A true US3891182A (en) 1975-06-24

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US407256A Expired - Lifetime US3891182A (en) 1972-11-11 1973-10-17 Arrangement for maintaining a shiftable member in a plurality of shifted positions

Country Status (10)

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US (1) US3891182A (enrdf_load_stackoverflow)
JP (1) JPS5644318B2 (enrdf_load_stackoverflow)
BG (1) BG24235A3 (enrdf_load_stackoverflow)
DE (1) DE2255270C3 (enrdf_load_stackoverflow)
FR (1) FR2213535B1 (enrdf_load_stackoverflow)
GB (1) GB1407769A (enrdf_load_stackoverflow)
IT (1) IT1001645B (enrdf_load_stackoverflow)
PL (1) PL91172B1 (enrdf_load_stackoverflow)
RO (1) RO65457A (enrdf_load_stackoverflow)
SE (1) SE402022B (enrdf_load_stackoverflow)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0023602A1 (en) * 1979-08-06 1981-02-11 Caterpillar Tractor Co. Control valve with improved centering and detent mechanisms
US4265144A (en) * 1978-12-26 1981-05-05 Allis-Chalmers Corporation Detent release for power shift transmission selector valve
US4270733A (en) * 1978-11-03 1981-06-02 Hydraulic Energy Company Cable racking system
US4270566A (en) * 1979-12-12 1981-06-02 The United States Of America As Represented By The Secretary Of The Navy Self-restricting shutoff valve
US4633977A (en) * 1985-08-05 1987-01-06 Hi-Ranger, Inc. Manual override control handle selectively engageable with the valve spool of a servo valve
US4633957A (en) * 1985-04-15 1987-01-06 Prost Claude D Soil plugger with plug ejector
US4844412A (en) * 1987-02-06 1989-07-04 Diesel Kiki Co., Ltd. Spool detent device for manually operated directional control valve
US4913190A (en) * 1989-04-24 1990-04-03 Deere & Company Detent mechanism for a control valve
US4957018A (en) * 1987-09-24 1990-09-18 Varian Associates, Inc. Mechanism for selectively locking and unlocking a translatable shaft
US5328002A (en) * 1992-12-07 1994-07-12 Allied-Signal Inc. Apply and release hydraulic parking valve
DE10335104B4 (de) * 2002-10-31 2007-12-13 Hawe Hydraulik Gmbh & Co. Kg Schieberventil
US20080056814A1 (en) * 2006-08-31 2008-03-06 Jergens, Inc. Release pin
US20110008128A1 (en) * 2005-07-01 2011-01-13 Jergens, Inc. Release pin
US20130299183A1 (en) * 2012-05-10 2013-11-14 Weatherford/Lamb, Inc. Failsafe Hydrostatic Vent
US8584845B2 (en) 2010-04-23 2013-11-19 Ronald S. Soltis, JR. Apparatus and method for storing a watch
WO2019209207A3 (en) * 2017-12-31 2019-12-19 Hema Endustri Anonim Sirketi A direction control valve with locking mechanism
EP4579375A1 (en) * 2023-12-28 2025-07-02 elobau GmbH & Co. KG Sliding sleeve, operating unit and method for manufacturing an operating unit
WO2025140936A2 (en) 2023-12-28 2025-07-03 Elobau Gmbh & Co. Kg Sliding sleeve, operating unit and method for manufacturing an operating unit

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4103562A (en) * 1973-10-02 1978-08-01 B & W Manufacturing Co., Inc. Sewing apparatus
CA1114753A (en) * 1978-11-27 1981-12-22 James D. Helm Locking device
JPH024297Y2 (enrdf_load_stackoverflow) * 1984-09-25 1990-01-31
DE4442120A1 (de) * 1994-11-26 1996-05-30 Schaeffler Waelzlager Kg Rampenkontur für eine Arretiereinrichtung
DE29501733U1 (de) * 1995-02-03 1995-03-23 Westfalia-Werke Knöbel GmbH & Co., 33378 Rheda-Wiedenbrück Kugel-Ringrinnenkupplung für die Verbindung des Kupplungskugeltragarms mit der fahrzeugfesten Führungshülse einer Fahrzeuganhängerkupplung
GB2305708B (en) * 1995-09-27 2000-01-26 Raymond Louis Hughes Shut-off valve
DE29802037U1 (de) * 1998-02-06 1998-04-02 Söll GmbH, 95028 Hof Läufer, der auf einer Schiene gleitet, insbesondere für eine Absturzsicherung
DE102008035212A1 (de) * 2008-07-29 2010-02-18 Hydac Filtertechnik Gmbh Hydraulische Ventilvorrichtung
DE102016220684A1 (de) 2016-10-21 2018-04-26 Volkswagen Aktiengesellschaft Stelleinrichtung für ein Ventil

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3088489A (en) * 1960-08-22 1963-05-07 Parker Hannifin Corp Detent release for flow control valves
US3128677A (en) * 1962-04-30 1964-04-14 Hydraulic Unit Specialities Co Control instrumentality having detent mechanism
US3218882A (en) * 1965-11-23 Slide valve detent and locking device
US3247768A (en) * 1965-06-16 1966-04-26 Hydraulic Unit Specialities Co Interlock for hydraulic control valves and the like
US3438399A (en) * 1967-04-24 1969-04-15 Bendix Corp Valve locking means
US3602245A (en) * 1970-02-26 1971-08-31 Abex Corp Universal detent positioner
US3618634A (en) * 1970-01-05 1971-11-09 Int Harvester Co Hydraulic control valve with flow-sensitive unlatching mechanism

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2848014A (en) * 1955-12-19 1958-08-19 Hydraulic Unit Specialities Co Detent mechanism for hydraulic control valves
US3385559A (en) * 1965-05-12 1968-05-28 Automatic Switch Co Releasable latch mechanism for control devices, valves, and the like
US3386138A (en) * 1966-03-08 1968-06-04 Navy Usa Environment discriminating release mechanism

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3218882A (en) * 1965-11-23 Slide valve detent and locking device
US3088489A (en) * 1960-08-22 1963-05-07 Parker Hannifin Corp Detent release for flow control valves
US3128677A (en) * 1962-04-30 1964-04-14 Hydraulic Unit Specialities Co Control instrumentality having detent mechanism
US3247768A (en) * 1965-06-16 1966-04-26 Hydraulic Unit Specialities Co Interlock for hydraulic control valves and the like
US3438399A (en) * 1967-04-24 1969-04-15 Bendix Corp Valve locking means
US3618634A (en) * 1970-01-05 1971-11-09 Int Harvester Co Hydraulic control valve with flow-sensitive unlatching mechanism
US3602245A (en) * 1970-02-26 1971-08-31 Abex Corp Universal detent positioner

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4270733A (en) * 1978-11-03 1981-06-02 Hydraulic Energy Company Cable racking system
US4265144A (en) * 1978-12-26 1981-05-05 Allis-Chalmers Corporation Detent release for power shift transmission selector valve
EP0023602A1 (en) * 1979-08-06 1981-02-11 Caterpillar Tractor Co. Control valve with improved centering and detent mechanisms
WO1981000440A1 (en) * 1979-08-06 1981-02-19 Caterpillar Tractor Co Control valve with improved centering and detent mechanisms
US4260132A (en) * 1979-08-06 1981-04-07 Caterpillar Tractor Co. Control valve with improved centering and detent mechanisms
US4270566A (en) * 1979-12-12 1981-06-02 The United States Of America As Represented By The Secretary Of The Navy Self-restricting shutoff valve
US4633957A (en) * 1985-04-15 1987-01-06 Prost Claude D Soil plugger with plug ejector
US4633977A (en) * 1985-08-05 1987-01-06 Hi-Ranger, Inc. Manual override control handle selectively engageable with the valve spool of a servo valve
US4844412A (en) * 1987-02-06 1989-07-04 Diesel Kiki Co., Ltd. Spool detent device for manually operated directional control valve
US4957018A (en) * 1987-09-24 1990-09-18 Varian Associates, Inc. Mechanism for selectively locking and unlocking a translatable shaft
US4913190A (en) * 1989-04-24 1990-04-03 Deere & Company Detent mechanism for a control valve
US5328002A (en) * 1992-12-07 1994-07-12 Allied-Signal Inc. Apply and release hydraulic parking valve
DE10335104B4 (de) * 2002-10-31 2007-12-13 Hawe Hydraulik Gmbh & Co. Kg Schieberventil
US8162581B2 (en) 2005-07-01 2012-04-24 Jergens, Inc. Release pin
US20110008128A1 (en) * 2005-07-01 2011-01-13 Jergens, Inc. Release pin
US20080056814A1 (en) * 2006-08-31 2008-03-06 Jergens, Inc. Release pin
US7891903B2 (en) * 2006-08-31 2011-02-22 Jergens, Inc. Release pin
US8584845B2 (en) 2010-04-23 2013-11-19 Ronald S. Soltis, JR. Apparatus and method for storing a watch
US20130299183A1 (en) * 2012-05-10 2013-11-14 Weatherford/Lamb, Inc. Failsafe Hydrostatic Vent
US9145757B2 (en) * 2012-05-10 2015-09-29 Weatherford Technology Holdings, Llc Failsafe hydrostatic vent
WO2019209207A3 (en) * 2017-12-31 2019-12-19 Hema Endustri Anonim Sirketi A direction control valve with locking mechanism
EP4579375A1 (en) * 2023-12-28 2025-07-02 elobau GmbH & Co. KG Sliding sleeve, operating unit and method for manufacturing an operating unit
WO2025140936A2 (en) 2023-12-28 2025-07-03 Elobau Gmbh & Co. Kg Sliding sleeve, operating unit and method for manufacturing an operating unit

Also Published As

Publication number Publication date
JPS4978091A (enrdf_load_stackoverflow) 1974-07-27
GB1407769A (en) 1975-09-24
FR2213535B1 (enrdf_load_stackoverflow) 1976-11-19
DE2255270B2 (de) 1981-03-12
BG24235A3 (en) 1978-01-10
PL91172B1 (enrdf_load_stackoverflow) 1977-02-28
DE2255270A1 (de) 1974-05-22
DE2255270C3 (de) 1981-11-12
SE402022B (sv) 1978-06-12
FR2213535A1 (enrdf_load_stackoverflow) 1974-08-02
RO65457A (ro) 1980-03-15
JPS5644318B2 (enrdf_load_stackoverflow) 1981-10-19
IT1001645B (it) 1976-04-30

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