US3709398A - Container - Google Patents

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Publication number
US3709398A
US3709398A US00065911A US3709398DA US3709398A US 3709398 A US3709398 A US 3709398A US 00065911 A US00065911 A US 00065911A US 3709398D A US3709398D A US 3709398DA US 3709398 A US3709398 A US 3709398A
Authority
US
United States
Prior art keywords
aluminum
cans
seam
sealed
section
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
US00065911A
Other languages
English (en)
Inventor
G Fuhrmann
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.)
CPPD Inc A CORP OF
Original Assignee
Lever Brothers Co
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 DE19691944554 external-priority patent/DE1944554C3/de
Application filed by Lever Brothers Co filed Critical Lever Brothers Co
Application granted granted Critical
Publication of US3709398A publication Critical patent/US3709398A/en
Assigned to CPPD, INC., A CORP. OF IL reassignment CPPD, INC., A CORP. OF IL ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: LEVER BROTHERS COMPANY, A CORP. OF ME
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/14—Linings or internal coatings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/543—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining more than two hollow-preforms to form said hollow articles
    • B29C66/5432—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining more than two hollow-preforms to form said hollow articles joining hollow covers and hollow bottoms to open ends of container bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/545—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles one hollow-preform being placed inside the other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B29C66/7232—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
    • B29C66/72321—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of metals or their alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints

Definitions

  • ABSTRACT A can which is of lightweight construction and suitable for heat sterilization, the can being formed from plastics coated aluminum and all seams sealed by heat sealing.
  • Tinplate cans have several disadvantages, however, e.g., relatively high weight, which is tiresome in transit and also for the housewife when she is shopping.
  • contents which react strongly with the container, such as tomato ketchup or fruit juices
  • a further disadvantage is that these cans are difficult to dispose of after use, as they are difficult to compress, which causes special refuse problems.
  • a very economical, relatively new method of sealing cans and bags made from plastic-coated aluminum sheet or foil is heat-sealing. This consists mainly in placing the sections of metal foil to be joined one on top of the other with the plastics sides together and heating them briefly under pressure along the seam to be formed to approximately 70 to 180 C depending on the type of plastics used which heating welds the plastics material along the heat-seal seam.
  • This welding of the plastics coating of a plastics-laminated aluminum sheet along the welded seam is called heat sealing and the seam produced is a heat-sealed seam.
  • the invention is based on the problem of making a stackable, sterilizable, shape-retaining rigid can for foods out of coated aluminum sheet. It should be possible to print the sheet from which the can is formed as it comes off the roll, before the can is manufactured.
  • the composite material must be sufficiently rigid to ensure the desired degree of shape retention in the finished container.
  • the aluminum sheet of this composite material must, however, also be sufficiently flexible to enable it to be coated or laminated from the roll with the plastics material before or after printing.
  • the coating must be sufficiently corrosion-resistant and free of pores to withstand the chemical action of the contents of the can, to protect the aluminum from this action and also to be heat-scalable.
  • the coating should also have sufficient thermal resistance to be able to withstand the relatively high temperature of at least 121 C for at least 20 minutes necessary for sterilization without de-lamination of the composite material, decomposition of the plastics layer or damage to the sealed seam.
  • the 50-200 p. thick aluminum sheet to be used according to the invention should have a rigidity of at least cm p, preferably higher than 50 cm p, measured by the Schlenker method.
  • the tensile strength B should be at least 10 kglsqmm, preferably at least 15 kg/sq.mm and the yield point 0.2 should be at least 7 kglsqmm, preferably approximately 10 kg/sq.mm.
  • the aluminum sheet is still sufficiently flexible to be unwound from the roll as a strip at high speed and further processed, and still produce cans with sufficient rigidity.
  • the low-pressure polyolefin layer on the inside of the can must be approximately 20-70 1.. thick. Coatings or Iaminations approximately 50 ;1. thick are best, on the whole.
  • the body seam joining the body to the base and be cylindrical or multi-angular prismatic, or in the form of a truncated cone or pyramid.
  • the lid and base section, to be joined to the body section rolled from coated aluminum sheeting according to the invention may be in many forms and materials. It is possible to use both plastics-coated and plastics-laminated aluminum, as well as plastics material alone.
  • FIG. 1 shows a longitudinal section through a cylindrical can with a sealed seam on the body and sealedon base and lid sections before completion of the base section by folding.
  • FIG. 2 shows the section of a can vertical to its longitudinal axis.
  • FIG. 3 shows 2 double-folded flanges of the base section of a cylindrical, sealed can in longitudinal section.
  • FIG. 4 shows the longitudinal section of a can in the shape of a truncated cone.
  • FIG. 5 shows the longitudinal section of a cylindrical can with sealed and folded body seam and recessed base section.
  • FIG. 6 shows the section of a cylindrical can vertical to its longitudinal axis with sealed and folded body seam and recessed base section.
  • aluminum sheeting 120 1,, thick, with a tensile strength of 14 kg/sq.mm and a yield point of 11 kg/sq.m. was used, coated on both sides with a 50 layer of isotactic low pressure polypropylene.
  • FIGS. 1-3 consists of a rolled body section 1 with a lap seam 4 with edges 5a and 5b. At the upper and lower edges of the body, flanges 7 and 8 are bent outwards. The base 3 and the lid 2 are sealed on to the flanges 7 and 8. This gives the sealed seams 9 and 10. After sealing, the flanges 7 and 8 are double folded, for example, so that they lie snugly against the body section, as shown in FIG. 3 for the base section.
  • FIG. 4 shows a can in the shape of a truncated cone with body section 11 and base and lid sections 12 and 13. A body seam 14 and base and lid seams 15 and 16 are also shown. Manufacture is analogous with that for the cylindrical can shown in FIGS. 1-3.
  • FIGS. 5 and 6 A further embodiment of the can is shown in FIGS. 5 and 6.
  • the can consists of a rolled body section 18 with strips 17 and 19 bent outwards which strips are sealed to each other so that inner coating rests against inner coating.
  • the sealed and folded seam forms the body seam 20, as shown in FIG. 6.
  • the recessed base section 21 and the lid section 22 are joined to the body 18 by the bonded seams 23 and 24.
  • the seams are made by a method analogous to that for the cans previously described.
  • the cans are made from punched out sheets of coated aluminum, uniform thickness is obtained and especially thin walls can be used. This means a considerable saving in weight.
  • the aluminum sheet of the rolled can remains evenly coated and a particularly corrosion-resistant product is therefore obtained.
  • the small amount of space required by the can illustrated in FIG. 4 is an advantage, because the finished cans may easily be stacked one inside the other when empty.
  • a sterilizable can for foods comprising a body section which is rolled from aluminum sheeting whose thickness is in the range 50 to 200 4., which has at least on its inner side a layer of an isotactic low-pressure polypropylene whose thickness is in the range 20 to 1,, and isdprovided with a side seam which is a heatsealed bon .of said polypropylene on polypropylene;
  • lid and base section also of said polypropylene coated aluminum sheeting and attached to said body section by seams which are heat-sealed bonds of polypropylene on polypropylene.
  • a sterilizable can according to claim 1 in which the thickness of the aluminum sheeting lies in the range to A.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Laminated Bodies (AREA)
US00065911A 1969-09-02 1970-08-21 Container Expired - Lifetime US3709398A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691944554 DE1944554C3 (de) 1969-09-02 SteriHsierbare und stapelbare Konservendose

Publications (1)

Publication Number Publication Date
US3709398A true US3709398A (en) 1973-01-09

Family

ID=5744425

Family Applications (1)

Application Number Title Priority Date Filing Date
US00065911A Expired - Lifetime US3709398A (en) 1969-09-02 1970-08-21 Container

Country Status (5)

Country Link
US (1) US3709398A (fr)
AT (1) AT307963B (fr)
BE (1) BE755641A (fr)
FR (1) FR2060802A5 (fr)
NL (1) NL7012833A (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3921848A (en) * 1972-12-04 1975-11-25 Alusuisse Aerosol dispensing and similar metal cans adapted to contain a pressurized fluid
US4223798A (en) * 1978-07-06 1980-09-23 Swiss Aluminium Ltd. Can for preserving foodstuffs and process for its manufacture
US4254886A (en) * 1975-04-02 1981-03-10 Thomassen En Drijver-Verblifa N.V. Can body having a laterally projecting flange
US4637543A (en) * 1984-04-13 1987-01-20 Weidenhammer Packungen Kg Gmbh & Co. Fiber can with reinforcing crimped metal closure
US4838450A (en) * 1986-07-03 1989-06-13 Luigi Bocchi Container designed for fizzy drinks and made of heat-moulded plastic material
US5049019A (en) * 1979-12-08 1991-09-17 Cmb Foodcan Plc Methods of making containers
US6165115A (en) * 1996-08-22 2000-12-26 Sonoco Development, Inc. Process for closing and hermetically sealing a bottom of a container
US6689307B2 (en) * 1997-01-29 2004-02-10 Tetra Laval Holdings & Finance S.A. Packaging container and a method of producing a packaging container
US20050029254A1 (en) * 2003-07-14 2005-02-10 Reynolds Food Packaging Microwave reflecting container
US20050199619A1 (en) * 2004-03-09 2005-09-15 Michael Richardson Microwavable metallic container
WO2006092364A3 (fr) * 2005-03-01 2006-11-30 Crown Packaging Technology Inc Boite d'emballage et procede et appareil pour sa fabrication
US20070284368A1 (en) * 2004-03-09 2007-12-13 Ball Corporation Microwavable Metallic Container
US20110210129A1 (en) * 2008-10-09 2011-09-01 Antonio Carlos Teixeira Alvares Container in metal sheet

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2185057A (en) * 1937-06-08 1939-12-26 Continental Can Co Sheet metal can body
US2412528A (en) * 1941-04-30 1946-12-10 Jacque C Morrell Coated metal container
US3112300A (en) * 1954-06-08 1963-11-26 Montedison Spa Isotactic polypropylene
US3206848A (en) * 1962-08-28 1965-09-21 American Can Co Method of manufacturing a coated metal container
US3387475A (en) * 1965-01-26 1968-06-11 Alusuisse Process for the manufacture of sheet metal articles coated with a thermoplastic resin
US3406891A (en) * 1964-10-14 1968-10-22 Fr Hesser Maschinenfabrik A G Container, particularly for liquids, with a deep drawn metal foil cover
US3568486A (en) * 1969-01-31 1971-03-09 Montgomery H A Co Preparation of metal for deforming operations

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2185057A (en) * 1937-06-08 1939-12-26 Continental Can Co Sheet metal can body
US2412528A (en) * 1941-04-30 1946-12-10 Jacque C Morrell Coated metal container
US3112300A (en) * 1954-06-08 1963-11-26 Montedison Spa Isotactic polypropylene
US3206848A (en) * 1962-08-28 1965-09-21 American Can Co Method of manufacturing a coated metal container
US3406891A (en) * 1964-10-14 1968-10-22 Fr Hesser Maschinenfabrik A G Container, particularly for liquids, with a deep drawn metal foil cover
US3387475A (en) * 1965-01-26 1968-06-11 Alusuisse Process for the manufacture of sheet metal articles coated with a thermoplastic resin
US3568486A (en) * 1969-01-31 1971-03-09 Montgomery H A Co Preparation of metal for deforming operations

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3921848A (en) * 1972-12-04 1975-11-25 Alusuisse Aerosol dispensing and similar metal cans adapted to contain a pressurized fluid
US4254886A (en) * 1975-04-02 1981-03-10 Thomassen En Drijver-Verblifa N.V. Can body having a laterally projecting flange
US4223798A (en) * 1978-07-06 1980-09-23 Swiss Aluminium Ltd. Can for preserving foodstuffs and process for its manufacture
US5049019A (en) * 1979-12-08 1991-09-17 Cmb Foodcan Plc Methods of making containers
US4637543A (en) * 1984-04-13 1987-01-20 Weidenhammer Packungen Kg Gmbh & Co. Fiber can with reinforcing crimped metal closure
US4838450A (en) * 1986-07-03 1989-06-13 Luigi Bocchi Container designed for fizzy drinks and made of heat-moulded plastic material
US6165115A (en) * 1996-08-22 2000-12-26 Sonoco Development, Inc. Process for closing and hermetically sealing a bottom of a container
US6689307B2 (en) * 1997-01-29 2004-02-10 Tetra Laval Holdings & Finance S.A. Packaging container and a method of producing a packaging container
US6729486B2 (en) * 1997-01-29 2004-05-04 Tetra Laval Holdings & Finance Sa Packaging container and a method of producing a packaging container
US20050029254A1 (en) * 2003-07-14 2005-02-10 Reynolds Food Packaging Microwave reflecting container
US20050199619A1 (en) * 2004-03-09 2005-09-15 Michael Richardson Microwavable metallic container
US8080770B2 (en) 2004-03-09 2011-12-20 Ball Corporation Microwavable metallic container
US7812292B2 (en) * 2004-03-09 2010-10-12 Ball Corporation Microwavable metallic container
US20070108196A1 (en) * 2004-03-09 2007-05-17 Ball Corporation Microwavable Metallic Container
US20070108197A1 (en) * 2004-03-09 2007-05-17 Ball Corporation Microwavable Metallic Container
US20070108198A1 (en) * 2004-03-09 2007-05-17 Ball Corporation Microwavable Metallic Container
US20070284368A1 (en) * 2004-03-09 2007-12-13 Ball Corporation Microwavable Metallic Container
US7378625B2 (en) * 2004-03-09 2008-05-27 Ball Corporation Microwavable metallic container
WO2006091821A3 (fr) * 2005-02-22 2007-03-01 Ball Corp Contenant metallique pour cuisson au micro-ondes
AU2006216587B2 (en) * 2005-02-22 2010-03-11 Ball Corporation Microwavable metallic container
US20090022861A1 (en) * 2005-03-01 2009-01-22 Crown Packaging Technology, Inc. Packaging Can and Method and Apparatus for Its Manufacture
WO2006092364A3 (fr) * 2005-03-01 2006-11-30 Crown Packaging Technology Inc Boite d'emballage et procede et appareil pour sa fabrication
US8746488B2 (en) 2005-03-01 2014-06-10 Crown Packaging Technology, Inc. Packaging can and method and apparatus for its manufacture
US9895737B2 (en) 2005-03-01 2018-02-20 Crown Packaging Technology, Inc. Packaging can and method and apparatus for its manufacture
US20110210129A1 (en) * 2008-10-09 2011-09-01 Antonio Carlos Teixeira Alvares Container in metal sheet
US8631962B2 (en) * 2008-10-09 2014-01-21 Brasilata S.A. Embalagens Metalicas Container in metal sheet

Also Published As

Publication number Publication date
NL7012833A (fr) 1971-03-04
FR2060802A5 (fr) 1971-06-18
AT307963B (de) 1973-06-12
BE755641A (fr) 1971-03-02
DE1944554A1 (de) 1971-03-11
DE1944554B2 (de) 1976-10-14

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STCF Information on status: patent grant

Free format text: PATENTED FILE - (OLD CASE ADDED FOR FILE TRACKING PURPOSES)

AS Assignment

Owner name: CPPD, INC., A CORP. OF IL, ILLINOIS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LEVER BROTHERS COMPANY, A CORP. OF ME;REEL/FRAME:004888/0628

Effective date: 19880101

Owner name: CPPD, INC., C/O CT CORPORATION SYSTEM 208 LASALLE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:LEVER BROTHERS COMPANY, A CORP. OF ME;REEL/FRAME:004888/0628

Effective date: 19880101