EP0135021A1 - Lampe - Google Patents

Lampe Download PDF

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Publication number
EP0135021A1
EP0135021A1 EP84108343A EP84108343A EP0135021A1 EP 0135021 A1 EP0135021 A1 EP 0135021A1 EP 84108343 A EP84108343 A EP 84108343A EP 84108343 A EP84108343 A EP 84108343A EP 0135021 A1 EP0135021 A1 EP 0135021A1
Authority
EP
European Patent Office
Prior art keywords
contact
button cell
cell battery
ring section
housing
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
EP84108343A
Other languages
German (de)
English (en)
Other versions
EP0135021B1 (fr
Inventor
Heinz Wolter
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT84108343T priority Critical patent/ATE37439T1/de
Priority to DK392684A priority patent/DK392684A/da
Priority to ES1984281179U priority patent/ES281179Y/es
Publication of EP0135021A1 publication Critical patent/EP0135021A1/fr
Application granted granted Critical
Publication of EP0135021B1 publication Critical patent/EP0135021B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L4/00—Electric lighting devices with self-contained electric batteries or cells
    • F21L4/08—Electric lighting devices with self-contained electric batteries or cells characterised by means for in situ recharging of the batteries or cells
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/10—Illuminating devices on or for locks or keys; Transparent or translucent lock parts; Indicator lights
    • E05B17/103—Illuminating devices on or for locks or keys; Transparent or translucent lock parts; Indicator lights on keys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L2/00—Systems of electric lighting devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L4/00—Electric lighting devices with self-contained electric batteries or cells
    • 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
    • Y10T70/00—Locks
    • Y10T70/80—Parts, attachments, accessories and adjuncts
    • Y10T70/8432—For key-operated mechanism
    • Y10T70/8676—Key holders

Definitions

  • the invention relates to a lamp in which a handle-forming housing made of plastic, a button cell battery equipped with a circumferential and central surface pole can be brought against the force of a compression spring into the switch contact position by a partial area of the central surface pole of the button cell battery coming into contact with a section of an annular Contact lamella, wherein the compression spring is arranged concentrically to the ring section lying on the housing base and the peripheral pole of the button cell battery is in constant contact (permanent contact) with a contact spring extending tangentially to the button cell battery.
  • a lamp of this type is known from DE-GM 18 50 084, because there is also a constant contact system with regard to the permanent peripheral contact between the button cell battery and the subsequent contact lamella.
  • This lamp is difficult to use; This is because the compression spring is formed by a closed rubber ring, which must be squeezed together with considerable forces to make contact.
  • a push button actuation that is as central as possible is necessary so that the center contact can come into contact with the high-arched tongue of the contact lamella lying on the bottom of the housing. If the pushbutton is pressed closer to the edge, a longer travel distance is required due to the tilt.
  • a lamp connectable with a key is known from DE-OS 31 26 774.
  • the compression spring forms a permanent one Cable bridge between the center surface pole and the contact lamella lying on the housing base.
  • the ring section there which is arranged to fly freely, interacts with a jacket region of the button cell battery that is inwardly flared near the center surface. Even small, for example, merely tolerance-dependent displacements of the contact parts to one another can lead to bridging the poles, which are only separated by an extremely narrow insulation zone. Overall, a relatively large housing is required due to the required safety distance between the ring section which is arranged in a free-flying manner and the button cell battery.
  • the object of the invention is to provide a generic lamp in a technically simpler, extremely flat, and reliable type, and with such a small design that it can be easily integrated with a key to a key lamp.
  • a luminaire which is extremely flat and can be assigned to a key with a high level of functional reliability and simple construction is created in a most favorable manner.
  • the flat center surface pole which protrudes slightly from the jacket of the button cell battery and always has a safe switching contact, is placed on the circular ring section underneath which is supported by the housing base. Since the tilting position, which is possible in many directions, means that changing places close to the edge always work together, there is not so easily a risk of scale formation. Rather, there is a self-cleaning effect at the contact points.
  • the structural assignment of the contact spring is also easy to install and reliable: it is located in a shaft of the housing in such a way that it cuts the receiving space for the incandescent lamp on the circumference with one end. It is advantageous that the contact spring extends at an acute angle to the receiving space aligned parallel to the key shaft. With regard to the compression spring, there is an advantageous assignment in that its bottom end turn lies in a depression in the housing base, the diameter of which is smaller than that of the ring section opening. The central position of the compression spring is thus guaranteed; no cross-shift can take place.
  • the incorporation of the end turn of the compression spring also contributes to achieving the most flat possible design if a conical spring is used.
  • the invention further proposes that the contact lamella contacts the incandescent lamp base with a contact tab angled beyond the contact spring out of the plane of the ring section, and the contact tab thus formed additionally is loaded by an elastic body supported on the housing.
  • the elastic body is cylindrical, is in a shaft and is overlaid by a hold-down of the housing cover.
  • the correspondingly resilient system can also be used for the contact spring, in that the contact spring, which is in constant contact with the peripheral surface pole, resiliently rests with its free end on the bulb socket and is additionally touched there by an elastic or resilient body (Fig. 20).
  • the contact spring which is in constant contact with the peripheral surface pole, resiliently rests with its free end on the bulb socket and is additionally touched there by an elastic or resilient body (Fig. 20).
  • the ring section of the contact lamella has a plurality of claws on the edge side, arranged essentially in the same angular distribution, which are located in the cylindrical wall of the receiving chamber for the Claw the button cell battery like a barb.
  • the clawing takes place in guide shafts running in the direction of insertion.
  • the area of the key 1 is designed as a lamp L.
  • the housing 2 which forms the handle of the key accommodates a button cell battery 3 centrally.
  • the flat, disc-shaped housing shown in FIG. 1 is made of insulation material, for. B. plastic, manufactured and closed by means of an annular cover 4 by means of an edge-side clip connection.
  • a central, cylindrical receiving chamber 5 for the button cell battery 3 extends from the wide surface of the housing 2 facing the cover 4. The latter is axially displaceable against spring loading.
  • the corresponding compression spring 6 is supported on the bottom 7 of the receiving chamber 5. At least its bottom end turn 6 'is in one of the recess 8 of the bottom 7. It is a conical spring, the other end turn 6 "loads the lower flat side of the button cell battery 3 centrally in the direction of the basic position (FIG. 5).
  • the spring-loaded basic position is defined by an annular shoulder 11 of a cone-like actuation button 12 overlapping the button cell battery 3.
  • the latter protrudes with its smaller, cylindrical section into a corresponding, continuous opening 13 of the lid 4.
  • the annular shoulder 11 comes into contact with the underside inner edge of the opening 13.
  • the hat space takes up the upper, cylindrical section of the button cell battery, which is located in the area of the lower edge of the hat widened to the circumference of the same, in order to finally end in the direction of the bottom 7 in the shape of a truncated cone.
  • the shoulder between the cylindrical and frustoconical section of the button cell battery is 14 designated.
  • the peripheral transition has a transverse rounding 15.
  • the jacket wall of this section forms the peripheral pole UP.
  • the peripheral pole UP is in constant contact with a contact spring 16 which extends essentially tangentially to the button cell battery 3. The width thereof corresponds at least to the stroke x of the button cell battery 3.
  • the contact spring is held in a shaft 17 (FIGS. 3 and 13) of the housing 2.
  • the shaft 17 ends at a distance y (FIG. 6) in front of the surface 7 1 of the base 7 on the receiving chamber, which distance is greater than the thickness of the contact lamella 9. This prevents contact between the latter and the contact spring 16.
  • a receiving space 18 for the incandescent lamp 19 of the lamp L adjoins the cylindrical receiving chamber 5 in the direction of the edge of the housing.
  • the receiving space 18 and the receiving chamber 5 are open to one another on a partial section.
  • the contact spring 16 extends in the corresponding break-through zone and is tied only at its two narrow ends 16 1 and 16 ", so that when the button cell battery is moved downwards it finds its spring escape space there, namely the shaft 17 takes an inclined course in the direction of displacement. This has the advantage that, with an increasing push-in movement, there is an even firmer frictional contact between the peripheral pole and the corresponding spring surface.
  • the incandescent lamp 19 forms an annular collar 20 in front of the glass bulb.
  • the latter is located in a transverse shaft 21 of the housing 2.
  • the light bulb 19 is oriented in the direction of the key shaft. It extends in the plane of the key edge.
  • the contact spring extends at an acute angle (angle alpha) to parallel to the key shank 1 1 aligned receiving space (Fig. 3 and 13).
  • the contact lamella 9 projects with a contact lug 22 angled beyond the contact spring 16 out of its flat plane into the region of the contact lamella Incandescent lamp base 23.
  • the flag initially takes an almost tangential course to the ring section 9 'and is then angled once or twice transversely to the direction of extension.
  • the tangentially directed contact spring 16 occurs with one, d. H.
  • the end on the incandescent lamp side which cuts the receiving space for the incandescent lamp on the circumference, against the thread-bearing jacket of the incandescent lamp 19, specifically against the annular collar 20 produced by outward folding, which continues at the rear into a thread-free, cylindrical section, so that the contact via the narrow end 16 "is always safely maintained.
  • the actuation button ends flush with the outer broad surface of the cover 4, but is concavely hollowed out towards the center.
  • the cover 4 also closes the upwardly open receiving space 18 for the incandescent lamp 19.
  • the depth of the space essentially corresponds to that of the incandescent lamp diameter.
  • the light does not need to be operated strictly centrally; due to the ring section 9 ', regardless of the tilting position of the button cell battery, at least a partial area thereof always comes into contact with the ring section.
  • the lights that can be equipped with a key shaft according to the second and third exemplary embodiments are basically of the same construction. Insofar as is necessary for understanding, the reference numbers are transferred analogously, without the text being repeated in relation to the matching features.
  • the contact lug 22 of the contact lamella 9, which rests resiliently on the bulb base 23, is in the direction of the bulb 19 to reinforce the resilient system by means of an elastic body 24, for example made of foam charged.
  • the cylindrical body in its basic form rests in a shaft 25 of the housing 2 lying behind the lamp base.
  • the shaft is partly formed by the receiving space 18.
  • the restoring force leads to the somewhat deformed shape shown in FIG. 13.
  • a congruent hold-down device 26 extends from the housing cover 4. It is a molded cylindrical pin that extends to the top of the elastic body. The pin can be seen in FIG. 15.
  • the contact lamella 9 leads to the bulb socket 23
  • the contact lamella 9 is guided to the annular collar 20 of the bulb 19 and is in constant contact with the Circumferential surface pole UP standing contact spring 16 in contact with the bulb base 23 at its free end.
  • the contact spring 16 takes a multiple-angled course, the directly contacting end being angled in a V-shape and the V-tip resting on the bulb base 23.
  • this free end is also loaded by an elastic or resilient body 24 '.
  • This body consists of a plate, which is inserted diagonally into the shaft area there and lies against the free V-leg, which is stressful.
  • the measure is taken that the contact lamella 9 extends in the direction of the key shaft (FIG. 16). Your lateral support is formed by ribs 27 which extend laterally of the contact lamella 9.
  • the basic shape of the lamp body also differs insofar as it now has an essentially triangular shape with slightly convex long sides.
  • the clip assignment of the The lid is also solved differently in that it forms a hammer head 28 with lateral, bevelled tabs which engage behind the corresponding undercuts of the housing 2.
  • the end of the cover 4 opposite the hammer head 28, on the other hand, is simply clipped into the receiving chamber 5 for the button cell battery 3.
  • the latter has corresponding locking recesses 30 into which the locking projections 31 of the cover 4 snap.
  • a special feature of the exemplary embodiment according to FIGS. 9 to 15 is that the ring section 9 ′ of the contact lamella 9 has a plurality of claws 9 ′′ arranged essentially in the same angular distribution on the edge, which are located in the cylindrical wall of the receiving chamber 5 for the button cell battery 3
  • the clawing takes place on the bottom of guide shafts 32 which run in the direction of insertion of the ring section 9 'and which are adapted to the contour of the claws 9 "and ensure an optimal rotation lock of the circular ring section 9'.
  • the insertion end of the key shaft 1 1 is forked. It enters a shaft of the housing corresponding to the fork shape and is fixed by a locking bolt 33 which is spring-loaded in the direction of the basic locking position.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Battery Mounting, Suspending (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Supports Or Holders For Household Use (AREA)
EP84108343A 1983-08-20 1984-07-16 Lampe Expired EP0135021B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT84108343T ATE37439T1 (de) 1983-08-20 1984-07-16 Leuchte.
DK392684A DK392684A (da) 1983-08-20 1984-08-16 Lygte
ES1984281179U ES281179Y (es) 1983-08-20 1984-08-20 Linterna

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833330179 DE3330179A1 (de) 1983-08-20 1983-08-20 Mit einem schluessel verbindbare leuchte
DE3330179 1983-08-20

Publications (2)

Publication Number Publication Date
EP0135021A1 true EP0135021A1 (fr) 1985-03-27
EP0135021B1 EP0135021B1 (fr) 1988-09-21

Family

ID=6207086

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84108343A Expired EP0135021B1 (fr) 1983-08-20 1984-07-16 Lampe

Country Status (5)

Country Link
US (1) US4521833A (fr)
EP (1) EP0135021B1 (fr)
JP (1) JPS6074301A (fr)
KR (1) KR850002118A (fr)
DE (2) DE3330179A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2597912A1 (fr) * 1986-04-28 1987-10-30 Turatti Mario Cle a dispositif d'eclairage pour serrures de vehicules automobiles

Families Citing this family (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2183021B (en) * 1985-11-13 1989-11-15 Junichi Nishizawa Lock system
DE3644563A1 (de) * 1986-12-27 1988-07-07 Ralf Schaefer Lupenleuchte
US4745527A (en) * 1987-01-09 1988-05-17 Allison Corporation Illuminated door lock scratch guard
US4787016A (en) * 1987-02-12 1988-11-22 Song Chang J Light attachable to a key
JPH01145283U (fr) * 1988-03-28 1989-10-05
DE8807763U1 (fr) * 1988-06-15 1988-09-22 Univers Reiss + Partner Gmbh, 5350 Euskirchen, De
US5181927A (en) * 1991-07-31 1993-01-26 Song Chang J Frame lock mechanism for a key light
US5463539A (en) * 1993-12-10 1995-10-31 Lumatec Industries, Inc. Miniature pocket flashlight with lens module and outer flexible sheath
US5386351A (en) * 1994-02-15 1995-01-31 Blue Tiger Corporation Convenience flashlight
US5457613A (en) * 1994-06-08 1995-10-10 Lumatec Industries, Inc. Peripherally sealed card-like flashlight device
US5927846A (en) * 1995-01-06 1999-07-27 Sinclair; Iain Disposable planar flashlight
US5664867A (en) * 1995-06-07 1997-09-09 Martin & Fisher, Inc. Night light for toilet seat
US5515248A (en) * 1995-06-09 1996-05-07 Canfield; Madeline M. Thin adhesively attached key light device
US5730013A (en) * 1997-04-02 1998-03-24 Huang; Wen-Sheng Key structure with illumination function
US6132058A (en) * 1997-10-08 2000-10-17 Kuo; Lambert Illuminating casing for receiving a handle of a key
DE19754193A1 (de) * 1997-12-06 1999-06-10 Heinz Wolter Schlüsselhalter mit Leuchte
US6224228B1 (en) * 1998-07-29 2001-05-01 W. Richard Frederick Key light
GB9825136D0 (en) * 1998-11-18 1999-01-13 Sinclair Iain Flat torch and manufacture thereof
US6857757B2 (en) * 1999-01-06 2005-02-22 Armament Systems And Procedures, Inc. LED flashlight with side panels inside structure
US6786616B1 (en) 1999-01-06 2004-09-07 Armament Systems And Procedures, Inc. LED flashlight with switch separate from panel
US6357890B1 (en) 2000-09-01 2002-03-19 Armament Systems And Procedures, Inc. Miniature LED flashlight
US6749317B1 (en) 1999-01-06 2004-06-15 Armament Systems And Procedures, Inc. Miniature led flashlight
US6164795A (en) * 1999-05-21 2000-12-26 Lopez; Fidel Universal key holder with light
US6530672B2 (en) * 1999-08-16 2003-03-11 Robert D. Galli Miniature flashlight
WO2001013033A1 (fr) * 1999-08-16 2001-02-22 Emissive Energy Corporation Lampe de poche miniature
US6796675B2 (en) * 1999-08-16 2004-09-28 Robert D. Galli Miniature flashlight
US6244722B1 (en) 1999-12-10 2001-06-12 James John Seebock Handcuff key with illumination
US6609811B1 (en) 2000-10-06 2003-08-26 Streamlight, Inc. Handcuff key light
US6598991B2 (en) 2001-01-10 2003-07-29 Lumatec Industries, Inc. Miniature flashlight device
US6435695B1 (en) 2001-01-22 2002-08-20 Lumatec Industries, Inc. Peripherally sealed card-like flashlight device having light generating module and holder therefor seated in cavity of main body structure
US6454435B1 (en) 2001-03-23 2002-09-24 Lumatec Industries, Inc. Card-shaped flashlight device with lamp, flasher and/or buzzer features
US6504708B2 (en) 2001-06-11 2003-01-07 Royal Consumer Information Products, Inc. Key chain organizer assembly
US6802620B2 (en) * 2001-10-12 2004-10-12 Robert Galli Flashlight housing with a key ring extension
US6971762B2 (en) * 2002-02-01 2005-12-06 Robert Galli Dual mode switch mechanism for flashlights
US6709129B2 (en) * 2002-04-18 2004-03-23 Robert Galli Dual mode switch mechanism for flashlights
US6976766B2 (en) * 2002-04-18 2005-12-20 Robert Galli Dual mode switch mechanism for flashlights
US7036950B1 (en) 2003-03-03 2006-05-02 Element Extreme, Llc Illuminated key blank
FR2856511B1 (fr) * 2003-06-20 2005-10-21 Carlo Mignatti Interrupteur de dispositif electronique et dispositif electronique avertisseur muni d'un tel interrupteur
US7463134B1 (en) 2005-04-01 2008-12-09 Stilley Russell L Dual key fob
US7159993B1 (en) * 2005-10-26 2007-01-09 Ta-Wei Lu Auxiliary light device for a key
US7628503B1 (en) * 2009-03-04 2009-12-08 Pumm Kevin M Illuminated key casing assembly
DE102012106622A1 (de) * 2012-07-20 2014-01-23 Huf Hülsbeck & Fürst Gmbh & Co. Kg Flacher Kraftfahrzeugschlüssel
US9380918B2 (en) * 2013-03-11 2016-07-05 Kohler Co. Toilet with lighted seat hinge
US10194777B2 (en) 2017-02-06 2019-02-05 Kohler Co. Toilet seat lighting apparatuses

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1850084U (de) * 1960-06-04 1962-04-19 Jehan M Teisseire Kleinleuchte.
FR2161154A5 (fr) * 1971-11-16 1973-07-06 Weyrich Dorothea
FR2166446A5 (fr) * 1971-11-08 1973-08-17 Weyrich Dorothea
DE2528498B1 (de) * 1975-06-26 1976-12-02 Heinz Wolter Mit einem schluessel fest verbindbare leuchte
DE2800936A1 (de) * 1977-01-11 1978-07-13 Rousseau Jean Pierre Schalter, insbesondere fuer eine taschenlampe
GB1588720A (en) * 1976-12-21 1981-04-29 Robertson J Key holder
US4281368A (en) * 1979-11-02 1981-07-28 Humbert A Robert Keyhole illuminating apparatus
DE3126774A1 (de) * 1981-07-07 1983-01-27 Tibbe KG, 8065 Erdweg Schluessel, insbesondere zur betaetigung von kraftfahrzeugschloessern

Family Cites Families (6)

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US2393373A (en) * 1944-04-03 1946-01-22 Hendrix Dewey Key container
US3085149A (en) * 1961-10-19 1963-04-09 Realist Miniature light source
US3310668A (en) * 1964-10-20 1967-03-21 Bantam Lite Inc Miniature flashlight with key attachment
DE2827560C2 (de) * 1978-06-23 1983-08-18 Heinz 5067 Kürten Wolter Mit einem Schlüssel verbindbare Leuchte
US4276582A (en) * 1978-12-26 1981-06-30 Lock Light Corporation Key with light
US4392186A (en) * 1980-12-15 1983-07-05 Avi Cziment Key with light in handle

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1850084U (de) * 1960-06-04 1962-04-19 Jehan M Teisseire Kleinleuchte.
FR2166446A5 (fr) * 1971-11-08 1973-08-17 Weyrich Dorothea
FR2161154A5 (fr) * 1971-11-16 1973-07-06 Weyrich Dorothea
DE2528498B1 (de) * 1975-06-26 1976-12-02 Heinz Wolter Mit einem schluessel fest verbindbare leuchte
GB1588720A (en) * 1976-12-21 1981-04-29 Robertson J Key holder
DE2800936A1 (de) * 1977-01-11 1978-07-13 Rousseau Jean Pierre Schalter, insbesondere fuer eine taschenlampe
US4281368A (en) * 1979-11-02 1981-07-28 Humbert A Robert Keyhole illuminating apparatus
DE3126774A1 (de) * 1981-07-07 1983-01-27 Tibbe KG, 8065 Erdweg Schluessel, insbesondere zur betaetigung von kraftfahrzeugschloessern

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2597912A1 (fr) * 1986-04-28 1987-10-30 Turatti Mario Cle a dispositif d'eclairage pour serrures de vehicules automobiles

Also Published As

Publication number Publication date
DE3474203D1 (en) 1988-10-27
EP0135021B1 (fr) 1988-09-21
US4521833A (en) 1985-06-04
KR850002118A (ko) 1985-05-06
JPS6074301A (ja) 1985-04-26
DE3330179A1 (de) 1985-04-04

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