US3762647A - Sprayer - Google Patents

Sprayer Download PDF

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Publication number
US3762647A
US3762647A US00283358A US3762647DA US3762647A US 3762647 A US3762647 A US 3762647A US 00283358 A US00283358 A US 00283358A US 3762647D A US3762647D A US 3762647DA US 3762647 A US3762647 A US 3762647A
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US
United States
Prior art keywords
cylinder
container
piston
sprayer
recess
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
US00283358A
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English (en)
Inventor
T Tada
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
Priority claimed from JP46064722A external-priority patent/JPS5115605B2/ja
Priority claimed from JP3540372U external-priority patent/JPS5549327Y2/ja
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3762647A publication Critical patent/US3762647A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
    • B05B1/3431—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves
    • B05B1/3436—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves the interface being a plane perpendicular to the outlet axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0037—Containers
    • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means
    • B05B11/00442—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means the means being actuated by the difference between the atmospheric pressure and the pressure inside the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B05B11/1009—Piston pumps actuated by a lever
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0037—Containers
    • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means

Definitions

  • the present invention relates to a manual sprayer.
  • a sprayer of this kind has a sprayer body provided with a cylinder, in which a hollow piston slides back and forth.
  • the piston When the piston is moved toward the rear end of the cylinder, the liquid is sprayed through a swirl member disposed in the piston, and when the piston is moved toward the front end of the cylinder, the liquid is sucked through a first check valve into the cylinder.
  • a second check valve other than the above-mentioned first check valve is indispensable in order to lower the pressure in the cylinder so that the liquid can be sucked in the cylinder.
  • the provision of said second check valve makes the construction of the sprayer complicated, and the production more time-consuming, and results in a higher cost of the sprayer.
  • the object of the present invention is to provide a manual sprayer simple in construction and low in manufacturing cost.
  • a swirl member is designed not only to atomize liquid effectively but to reduce the pressure in the cylinder, thereby sucking up the liquid. Owing to this specific function of the swirl member, the sprayer according to this invention can dispense with the above-mentioned second check valve, and therefore can be made in a simple construction.
  • FIG. 1 is a side sectional view of one embodiment of the sprayer according to the present invention.
  • FIG. 2a is an enlarged sectional view of the piston with the swirl member in it;
  • FIG. 2b is a side sectional view of the piston and swirl member taken along the line ll in FIG. 20;
  • FIGS. 3a and 3b are enlarged sectional views of the front end of the piston, and show the position of the swirl member at spraying and liquid sucking, respectively;
  • FIG. 4 is an enlarged perspective view of the valve used in the embodiment of FIG. 1 for preventing pressure reduction of the container;
  • FIG. 5 is a sectional view of another sprayercontainer connection
  • FIG. 6 is a sectional view of another container having on its bottom a valve for preventing pressure reduction of the container;
  • FIG. 7 shows the valve used in the embodiment of FIG. 6 for preventing pressure reduction other than those illustrated in FIGS. 1, 4 and 5;
  • FIG. 8 is a sectional view of the bottom portion of still another container having a valve for preventing pressure reduction.
  • the sprayer of the present invention is constituted of a sprayer body 1 having a cavity Le. a cylinder 2 opening at one end and a liquid passage 3 communicating with the cylinder at one end and opening at the lower portion of the sprayer body 1.
  • Firmly attached to the body 1 is a liquid container 4 which will be described hereinafter.
  • a cap 5 is securely attached to the container 4 by means of an adhesive tape 6 of, for instance, vinyl chloride.
  • a lever 7 having a hole 9 is rockably attached by means of a pin 8.
  • a piston 10 In said hole 9, there is inserted one end of a piston 10.
  • the other end of said piston 10 is slidably inserted in the cylinder from the opening.
  • the lever 7 has side walls each with a Ushaped notch 11 into which fitted is a pin 12 protruding from either side of the piston 10.
  • a spring seat 13 in the closed end of cylinder, and on said spring seat a compression spring 14 is so mounted as to push the piston 10 toward the open end of the cylinder 2.
  • a check valve 15 which is so designed as to permit the liquid to flow into the cylinder 2 from the passage 3 but not the other way around.
  • the piston 10 consists of a sliding member 16 moving back and forth in the cylinder 2 and a cap 17 firmly fitted on the sliding member 16 and having a nozzle hole 18 at its end.
  • a sliding member 16 moving back and forth in the cylinder 2 and a cap 17 firmly fitted on the sliding member 16 and having a nozzle hole 18 at its end.
  • Within said sliding member 16 there is formed a cylinder-like cavity 19 which communicates with the cylinder 2 via a hole 20.
  • Said nozzle hole 18, cavity 19 and hole 20 form a main liquid passage running through the piston 10.
  • a swirl member 22 is slidably disposed in the cavity 19 between the bottom of the cap 17 and the front end of the sliding member 16 which is made flat.
  • Said swirl member 22 has, as shown in FIGS. 2a and 2b, a hexagonal section (or any other polygonal section) and its edges 23 contact the inner wall of cap 17.
  • subliquid passages 24 between the sides of the swirl member 22 and the inner wall of the cap 17.
  • the tip of the swirl member 22 is formed as a truncated cone and has a round recess 25 at the center of its end surface opposite the cylinder 2. From the recess 25 extend grooves 26 parallel the radial directions of the swirl member 22.
  • the liquid is sprayed in the following manner.
  • the lever 7 is moved in the direction of arrow A and the piston 10 slides toward the inner end of the cylinder 2, the liquid filling the cylinder and the cavity 19 pushes swirl member 22 onto the bottom of the cap 17, and consequently flows into the recess 25 through the sub passages 24 and grooves 26.
  • the liquid then swirls in the recess 25 and is jetted in spray out of the nozzle hole 18.
  • swirl member 22 When the lever 7 is released and the piston 10 is moved toward the outer end of the cylinder 2, the swirl member 22 comes into contact with the end of the sliding member 16 to close the front sub passages 24. Simultaneously, the pressure in the cylinder 2 and the cavity 19 is reduced, and the check valve 15 is opened to permit the liquid to flow into the cylinder 2 through the liquid passage 3.
  • swirl member 22 functions also as a check valve for reducing the pressure in the cylinder 2.
  • the sprayer of the present invention is further provided with a rod 27 extending from the spring seat 13 and passing through hole 20.
  • a head 28 is integrally formed with the end of the rod 27. Said rod 27 and head 28 are combined into a piston valve, which closes the hole only when the piston 10 is placed in the foremost position.
  • the sprayer body 1 has formed a tapered connection neck 29, at the lower end of which is formed a truncated conical recess 30. On the middle of the bottom of recess 30, there stands a tubular protrusion 31 into which a pipe 32 is inserted to communicate with the liquid passage 3.
  • Said recess of the sprayer body 1 receives a truncated conical neck 33 of the container 4.
  • Said neck 33 has serrations 34 on its periphery and frictionally contacts with the inner wall of the recess 30.
  • the recess 30 has a ring 35 protruding from the lower end of its inner wall. Said ring 35 engages with the lowest serration of neck 33, thereby strongly connecting the container 4 to the sprayer body.
  • a clamp ring 36 clamps the lower portion of the neck 29 to more firmly connect the container 4 to sprayer body 1.
  • a check valve 38 is disposed on the bottom of the recess 30.
  • Said check valve 38 has an M-shaped section and is made of an elastic material such as synthetic resins, and consists, as shown in FIGS. 1 and 4, of a central tubular portion 39 securely mounted on the tubular protrusion 31 and a thin skirt portion 40, whose hem elastically touches the inner wall of the recess 30 a little below tiny hole 37. Consequently, when the pressure in the container 4 is reduced, air passes through the hole 37, bends the skirt portion 40 and easily flows into the container 4 through between the hem of the skirt portion 40 and the inner wall of the recess 30.
  • a sprayer body I and a container 4 are intergrated, and a circular bottom plate 41 is provided at the bottom portion of the container 4.
  • Said bottom plate 41 has a peripheral flange which is secured on the inner wall of the container 4 by means of, for example, welding.
  • the opening 42 may be either sealed or closed with a lid which is detachably provided so that re-flllings of the container 4 can be made.
  • a check valve 38 is, like that used in the embodiment of FIG. I, disposed in the recess of the neck of the sprayer body I. If the sprayer body and the container are integrated, the sprayer becomes simpler in construction and is therefore easily assembled. In this case, a check valve for preventing pressure reduction in the container may be disposed on the bottom plate of the container.
  • a tubular member 43 having a U-shaped recess 44 protrudes from the middle portion of a bottom plate 41, and a tubular member 45 having a flange 46 is disposed on the lower surface of the bottom plate 41 right beneath the tubular member 43.
  • the U-shaped recess 44 of the tubular member 43 is communicated with the interior 47 of the ring-shaped member 45 by a through hole 48.
  • a circular groove 49 In the bottom of the U-shaped recess 44, there is made a circular groove 49 into which a check valve 50 is fitted.
  • Said check valve 50 is made of an elastic material and consists, as shown in FIG. 7, of a funnel-shaped tubular part 51 the thickness of which decreases toward its open end, and of a tubular part 52 having long U- shaped notches 53 and extending in longitudinal direction thereof. Said tubular parts 51 and 52 are separated one from the other by a partition wall 54 disposed therebetween. The lower end of the tubular part 52 is firmly fitted in the circular groove 49, and the open end of the funnel-shaped part 51 elastically touches the inner wall of the U-shaped recess 44. With the check valve 50 disposed in such manner, air flows into container 4 through the hole 48, notches 52 and through between the open end of the tubular part 51 and the inner wall of the U-shaped recess 44. However, the liquid in the container 4 never leaks out since the open end of the funnel-shaped part 51 is brought into a strong contact with the inner wall of the U-shaped recess 44 by the liquid pressure.
  • a disk 55 perforated with tiny holes is mounted so that the check valve 50 may not be dislocated from its place by, for instance, a slender rod which is inserted, by change, through the hole 48.
  • Check valve 50 may, as illustrated in FIG. 8, detachably be disposed beneath the opening 42 of the bottom plate 41.
  • a ring 56 surrounding the opening 42 is threaded on its periphery.
  • a cap 57 which is a combination of the tubular member 43 and the ring-shaped member 45 as shown in FIG. 6.
  • a check valve 50 is securedly placed in the cap 57.
  • a clamp ring 58 is disposed to secure a disk 55 perforated with tiny holes.
  • a sprayer comprising:
  • a sprayer body having a cylinder with an opening at one side
  • a first check valve for introducing spray material into the cylinder
  • a swirl member disposed in the main passage to be axially movable to atomize the spray material flowing through the main passage from the cylinder, said swirl member being adapted to open the main passage by increased pressure of the material due to the backward movement of the piston member and to close the passage by reduced pressure in the cylinder due to the forward movement of the piston member.
  • a sprayer according to claim 1 wherein said swirl member has a polygonal cross section, the edges of the swirl member abutting on the inner surface of the main passage to form a plurality of sub passages'between the peripheral surface of the swirl member and the inner surface of the main passage, said sub passages being opened and closed by axial movement of the swirl member.
  • a sprayer according to claim 2 wherein said swirl member has a recess in the end surface opposite to the cylinder, and grooves extending from the recess to the sub passages.
  • said reciprocating means includes a lever for moving the piston member backward in cylinder and a spring for urging the piston member forward in the cylinder.
  • a sprayer according to claim 1 further comprising a piston valve for closing the main passage as the piston member is placed in the foremost position.
  • a sprayer according to claim 1 further comprising a container for containing the spray material and a second check valve arranged in the container to prevent reduced pressure in the container.

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  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Closures For Containers (AREA)
  • Reciprocating Pumps (AREA)
US00283358A 1971-08-26 1972-08-24 Sprayer Expired - Lifetime US3762647A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP46064722A JPS5115605B2 (de) 1971-08-26 1971-08-26
JP3540372U JPS5549327Y2 (de) 1972-03-25 1972-03-25

Publications (1)

Publication Number Publication Date
US3762647A true US3762647A (en) 1973-10-02

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ID=36587189

Family Applications (1)

Application Number Title Priority Date Filing Date
US00283358A Expired - Lifetime US3762647A (en) 1971-08-26 1972-08-24 Sprayer

Country Status (6)

Country Link
US (1) US3762647A (de)
BE (1) BE788042A (de)
CA (1) CA954840A (de)
DE (1) DE2241927C3 (de)
FR (1) FR2151396A5 (de)
GB (1) GB1360694A (de)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3869089A (en) * 1973-10-24 1975-03-04 Black & Decker Mfg Co Trigger assembly for manually operable spray apparatus
US3897006A (en) * 1974-09-09 1975-07-29 Tetsuya Tada Sprayer
US3927834A (en) * 1974-02-12 1975-12-23 Tetsuya Tada Sprayer
DE2705071A1 (de) * 1976-02-09 1977-08-11 Afa Corp Von hand betaetigbare spruehvorrichtung mit automatischer behaelterentlueftung
US4345718A (en) * 1979-04-23 1982-08-24 William Horvath Manually actuated trigger sprayer
DE3402406A1 (de) * 1984-01-25 1985-08-01 Pressol Schmiergeräte GmbH, 8500 Nürnberg Spritzkanne
US4815663A (en) * 1977-03-02 1989-03-28 Tetsuya Tada Trigger type sprayer
US5509221A (en) * 1994-05-10 1996-04-23 Black & Decker Inc. Spray nozzle assembly for an electric iron
US5593094A (en) * 1995-02-07 1997-01-14 Calmar Inc. Pump sprayer having variable discharge
US5716008A (en) * 1996-03-04 1998-02-10 Nottingham-Spirk Design Associates, Inc. Trigger sprayer
US5740964A (en) * 1994-05-16 1998-04-21 Par-Way Group Hand held spray dispenser with adjustable pressure delivery system and rotating nozzle
US20030150881A1 (en) * 2000-06-16 2003-08-14 Jean-Louis Bougamont Dynamic air replenishing device for liquid product dispenser
US20040211792A1 (en) * 2003-04-28 2004-10-28 Nottingham-Spirk Design Associates, Inc., An Ohio Corporation Pump drive unit for battery operated fluid dispensers
US20080135581A1 (en) * 2006-12-12 2008-06-12 Timothy James Kennedy Fluid Dispensing Systems for Pump Dispenser
USD717666S1 (en) 2014-03-14 2014-11-18 The Clorox Company Fluid dispenser
EP3009194A1 (de) * 2014-08-20 2016-04-20 Nordson Corporation Applikator, mischspitze und verfahren zur ausgabe einer gemischten flüssigkeit
CN108602083A (zh) * 2016-02-19 2018-09-28 阿普塔尔法国简易股份公司 分配机构和包括该分配机构的分配器

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA79280B (en) * 1978-02-28 1980-05-28 Afa Corp Universal body variable shroud dispenser
DE3245493C1 (de) * 1982-07-21 1984-02-09 Karlheinz 8902 Neusäß Kläger Belueftungsventil fuer den Fluessigkeitsbehaelter eines handbetaetigten Fluessigkeitszerstaeubers

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2605142A (en) * 1948-10-25 1952-07-29 Gold Harold Spray device
US2921747A (en) * 1958-08-14 1960-01-19 Bosch Arma Corp Nozzle
US3112074A (en) * 1961-11-29 1963-11-26 Edward Howard Green Spray head for an aerosol dispenser
US3379381A (en) * 1965-01-07 1968-04-23 Raymond Decaux Atomizer pump
US3627206A (en) * 1969-07-07 1971-12-14 Step Soc Tech Pulverisation Dip-tube liquid vaporizers
US3685739A (en) * 1970-08-07 1972-08-22 Afa Corp Liquid dispensing apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2605142A (en) * 1948-10-25 1952-07-29 Gold Harold Spray device
US2921747A (en) * 1958-08-14 1960-01-19 Bosch Arma Corp Nozzle
US3112074A (en) * 1961-11-29 1963-11-26 Edward Howard Green Spray head for an aerosol dispenser
US3379381A (en) * 1965-01-07 1968-04-23 Raymond Decaux Atomizer pump
US3627206A (en) * 1969-07-07 1971-12-14 Step Soc Tech Pulverisation Dip-tube liquid vaporizers
US3685739A (en) * 1970-08-07 1972-08-22 Afa Corp Liquid dispensing apparatus

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3869089A (en) * 1973-10-24 1975-03-04 Black & Decker Mfg Co Trigger assembly for manually operable spray apparatus
US3927834A (en) * 1974-02-12 1975-12-23 Tetsuya Tada Sprayer
US3897006A (en) * 1974-09-09 1975-07-29 Tetsuya Tada Sprayer
DE2705071A1 (de) * 1976-02-09 1977-08-11 Afa Corp Von hand betaetigbare spruehvorrichtung mit automatischer behaelterentlueftung
US4815663A (en) * 1977-03-02 1989-03-28 Tetsuya Tada Trigger type sprayer
US4345718A (en) * 1979-04-23 1982-08-24 William Horvath Manually actuated trigger sprayer
DE3402406A1 (de) * 1984-01-25 1985-08-01 Pressol Schmiergeräte GmbH, 8500 Nürnberg Spritzkanne
US5509221A (en) * 1994-05-10 1996-04-23 Black & Decker Inc. Spray nozzle assembly for an electric iron
US5740964A (en) * 1994-05-16 1998-04-21 Par-Way Group Hand held spray dispenser with adjustable pressure delivery system and rotating nozzle
US5593094A (en) * 1995-02-07 1997-01-14 Calmar Inc. Pump sprayer having variable discharge
US5716008A (en) * 1996-03-04 1998-02-10 Nottingham-Spirk Design Associates, Inc. Trigger sprayer
US20030150881A1 (en) * 2000-06-16 2003-08-14 Jean-Louis Bougamont Dynamic air replenishing device for liquid product dispenser
US6666357B2 (en) * 2000-06-16 2003-12-23 Rexam-Dispensing Systems Dynamic air replenishing device for liquid product dispenser
US20040211792A1 (en) * 2003-04-28 2004-10-28 Nottingham-Spirk Design Associates, Inc., An Ohio Corporation Pump drive unit for battery operated fluid dispensers
US7318539B2 (en) 2003-04-28 2008-01-15 Power Sprayer Llc Pump drive unit for battery operated fluid dispensers
US20080135581A1 (en) * 2006-12-12 2008-06-12 Timothy James Kennedy Fluid Dispensing Systems for Pump Dispenser
US20110174841A1 (en) * 2006-12-12 2011-07-21 Timothy James Kennedy Fluid Dispensing Systems for Pump Dispenser
USD717666S1 (en) 2014-03-14 2014-11-18 The Clorox Company Fluid dispenser
EP3009194A1 (de) * 2014-08-20 2016-04-20 Nordson Corporation Applikator, mischspitze und verfahren zur ausgabe einer gemischten flüssigkeit
CN108602083A (zh) * 2016-02-19 2018-09-28 阿普塔尔法国简易股份公司 分配机构和包括该分配机构的分配器
US10646887B2 (en) 2016-02-19 2020-05-12 Aptar France Sas Dispensing member and dispenser comprising such a member

Also Published As

Publication number Publication date
CA954840A (en) 1974-09-17
GB1360694A (en) 1974-07-17
DE2241927C3 (de) 1978-11-09
DE2241927A1 (de) 1973-03-15
BE788042A (fr) 1972-12-18
DE2241927B2 (de) 1978-03-16
FR2151396A5 (de) 1973-04-13

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