US3528471A - Carrier bags having handles with snap-fastener locking means - Google Patents

Carrier bags having handles with snap-fastener locking means Download PDF

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Publication number
US3528471A
US3528471A US818728A US3528471DA US3528471A US 3528471 A US3528471 A US 3528471A US 818728 A US818728 A US 818728A US 3528471D A US3528471D A US 3528471DA US 3528471 A US3528471 A US 3528471A
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US
United States
Prior art keywords
stud
recess
bag
handle
snap
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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
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US818728A
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English (en)
Inventor
Emil Hartmann
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CTP Ind Inc
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CTP Ind Inc
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Publication date
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Publication of US3528471A publication Critical patent/US3528471A/en
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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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/1683—A pair of interconnecting rigid strips made of plastic material, e.g. one or both being provided with a handle or suspension means
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S493/00—Manufacturing container or tube from paper; or other manufacturing from a sheet or web
    • Y10S493/916—Pliable container
    • Y10S493/926—Pliable container having handle or suspension means

Definitions

  • Thermoplastic carrier bags which are provided with a pair of handle members at the opposed bag walls adjacent the rnouth of the bag and with means for snap fastening together the two handle members are now wellknown in the art.
  • the two handle members each comprise a longitudinal sealing bar and a centrally-disposed looped gripping portion which is integral with the sealing bar.
  • the sealing strip and/ or the looped hand-grip portion may carry one or more snap fastener elements generally comprising a protruding stud on one part and a mating recess on the other.
  • Each handle is affixed to the bag wall at its mouth by heat sealing the longitudinal sealing strip to the open edge of the bag.
  • Such bags may be frequently re-used and are highly convenient to the user because the bag mouth may be closed to guard against loss of the bag contents and entry of dirt, rain, etc.
  • the invention comprises a snap-fastener type locking means for handles for carrier bags which is readily openable when the two handle portions are prized apart at the location of the looped gripping handles, but strongly resist separation when an equal amount of force is applied on the handles through the bag walls. Consequently, the bag can readily be opened by the user, but will not readily be inadvertently opened as the result of stresses from a load in the bag.
  • any separating forces exerted on the two handle parts from above i.e. forces tending to separate the looped gripping handles, will quite readily result in releasing the snap fasteners; however, forces exerted which tend to separate the longitudinal sealing strips from below cause the above-mentioned protrusion to become quite securely engaged within and behind the overhanging portion of the stud so that there is a strong tendency to resist separation of the stud and recess.
  • FIG. 1 is a view of a typical carrier bag having thermoplastic bag walls and engageable handle portions which are secured to the bag walls at the mouth thereof;
  • FIG. 2 is a detailed view of a single one of the stud and recess combinations shown in FIG. 1;
  • FIG. 3 is a cross-sectional view taken along the section line 33 of FIG. 1;
  • FIG. 4 is a cross-sectional view of a stud and recess combination according to an alternative embodiment of the invention.
  • FIG. 5 is a perspective view of still another embodiment of the invention.
  • FIG. 1 illustrates a plastic carrier bag having opposed front and rear bag walls which are formed of a thin-film thermoplastic material. Inside the bag mouth are secured a pair of handle members 12 and 13 each of which comprises a longitudinal sealing strip 14, 15, and a centrally disposed looped hand-grip portion 16, 17. Preferably the handle members 12 and 13 are heat sealed to the bag walls along the respective sealing strips 14 and 15.
  • the two handle portions 12 and 13 are brought together and are releasably secured together by means of one or more stud-recess combinations 18 which may be located either along the longitudinal sealing strip or in the looped hand-grip portion, but which are preferably located adjacent the region where each looped hand-grip portion joins the longitudinal sealing strip as shown in FIG. 1.
  • FIG. 2 illustrates in greater detail the combination of a stud and recess for releasably securing two handle portions 12 and 13 together
  • FIG. 3 is a crosssectional view of the stud and recess combination of FIG. 2.
  • One ofthe handle portions 13 is shown as being provided with a stud 19 which is of generally circular crosssection as shown in FIG. 2.
  • the stud is hollowed out at 20 as shown in FIG. 3.
  • the hollowed-out portion has generally the configuration shown by the solid lines in FIG. 2 designated as 21, 22, 23, and 24.
  • the clearance which is provided by hollowing out the stud along the solid lines 22, 23, and 24 provides clearance for the stud over the protuberance 25 which is provided within the recess defined in the opposed handle portion 12.
  • the protuberance is smoothly curved downwardly toward the entranceway of the recess, but is also provided with an abrupt vertical wall 28 behind which the overhanging lip 27 can readily be engaged.
  • the handle portions are principally formed of a rather flexible, deformable plastic material such as polyethylene, it can be seen that when the stud 19 is inserted into the corresponding recess 26 defined in member 12, there will be clearance over the protuberance 25, and it will be necessary only to exert sufficient force to cause the lower lip 27 of stud 19 to pass over the protuberance 25 and be engaged against the back edge thereof, thereby effectively locking the stud in place in the recess.
  • any force applied along the direction of the arrows A to separate the two handle portions 12 and 13 will readily result in slippage of the surface 29 of the recess 26 over the smoothly contoured upper surface 30 of stud 19, and once these surfaces 29 and 30 are free of each other, continued separation of the handle portions 12 and 13 quite readily causes the protuberance 25 to slip out from behind the lower edge 27 of the overhanging lip so that the two handle members are then readily disengaged from each other.
  • FIG. 4 illustrates an alternative embodiment of the invention in which the stud 31 is provided with an overhanging lip portion 32 as before but the stud is not provided with a generally hollowed-out portion over its major cross-section. Instead, only a portion of the stud is hollowed out along its bottom portion at 33 so as to provide clearance for the protuberance 34. Otherwise, the stud and recess combination of FIG. 4 operates in much the same way as that of FIGS. 2 and 3.
  • the stud is hollowed out, with the hollowed-out portion being generally circular, but leaving an overhanging lip portion 35.
  • the recess is again provided with a protuberance 36 which can engage with the lip 35 to restrain separation of the two handle portions by lateral forces applied along the bottoms of the respective handle members.
  • the protuberance is illustrated as being generally located within the recess, and more closely toward the opposed handle portion than is the case in the embodiment of FIGS. 2 and 3, and the embodiment of FIG. 4.
  • the stud and recess of the embodiments disclosed herein are shown to have a generally cylindrical configuration, this is not essential, and they may very well have different configurations such as an oblong or irregular cross-section.
  • a carrier bag of the type having opposed bag walls and a pair of handle members formed of a flexible deformablematerial each secured to a bag wall at the mouth of the bag and with each handle member having a portion which is sealed to a bag wall and having also an integral hand-grip portion, the improvement which comprises:
  • snap-fastener locking means for said handle members comprising a stud on one handle frictionally and releasably engaging within a recess formed in the other handle member,
  • said stud being of generally cylindrical configuration and projecting laterally outwardly of said one handle member
  • said recess having a protuberance therein in the circumferential portion thereof which is most closely adjacent the location at which a bag side wall is secured to the relevant handle member,
  • said stud having a part of its cylindrical body portion removed from its point of juncture with the respective handle member axially therealong to a point near its remote end to thereby provide an overhanging lip at a said remote end which passes over and effectively locks behind said protuberance when said stud is fully inserted into said recess,

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
US818728A 1968-04-25 1969-04-23 Carrier bags having handles with snap-fastener locking means Expired - Lifetime US3528471A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH615468A CH464782A (de) 1968-04-25 1968-04-25 Henkelpaar für Tragbeutel, Verfahren zu seiner Herstellung und Mittel zur Ausführung des Verfahrens

Publications (1)

Publication Number Publication Date
US3528471A true US3528471A (en) 1970-09-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
US818728A Expired - Lifetime US3528471A (en) 1968-04-25 1969-04-23 Carrier bags having handles with snap-fastener locking means

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US (1) US3528471A (de)
CH (1) CH464782A (de)
DE (1) DE6752244U (de)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818811A (en) * 1972-09-15 1974-06-25 Bagprint Ltd Handle inserting device
USD253502S (en) 1977-12-30 1979-11-27 N A S Import Corp. Handle for a handbag
US4298104A (en) * 1979-12-17 1981-11-03 Henry Leong Luggage handle having releasable locking assembly
USD262668S (en) 1979-11-30 1982-01-19 Atwater Bag Corporation Handle for a bag
WO1987002967A1 (en) * 1985-11-18 1987-05-21 Polsun Manufacturing Corporation Bag handle
GB2210018A (en) * 1987-09-17 1989-06-01 Brian Posner Bag
US5161710A (en) * 1991-08-26 1992-11-10 Vaughan's Seed Company Container with integrally formed handle
US5813092A (en) * 1996-02-02 1998-09-29 Monaco, Llc Hanger handle for a recloseable bag
US20040011687A1 (en) * 2000-09-07 2004-01-22 Andre Charrin Portable package for a floral bouquet
US20050205632A1 (en) * 2002-10-02 2005-09-22 Harald Ristau Shopping bag to be attached in a shopping cart
EP1702857A1 (de) * 2005-03-16 2006-09-20 Angelika Schmitt Tragegriff für Behälter
US20080034536A1 (en) * 2006-05-08 2008-02-14 Terry Kinskey Cooperatively-engageable handles
US8356850B1 (en) * 2010-09-22 2013-01-22 In-Store Bagging Machine Company, LLC System and method for carrying and installing a plurality of empty ice bags into an ice bagging assembly

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3227358A (en) * 1964-01-03 1966-01-04 Laguerre Leon Handle and closure device for thermoplastic bags
US3313470A (en) * 1965-01-04 1967-04-11 Windmoeller & Hoelscher Carrying handle

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3227358A (en) * 1964-01-03 1966-01-04 Laguerre Leon Handle and closure device for thermoplastic bags
US3313470A (en) * 1965-01-04 1967-04-11 Windmoeller & Hoelscher Carrying handle

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818811A (en) * 1972-09-15 1974-06-25 Bagprint Ltd Handle inserting device
USD253502S (en) 1977-12-30 1979-11-27 N A S Import Corp. Handle for a handbag
USD262668S (en) 1979-11-30 1982-01-19 Atwater Bag Corporation Handle for a bag
US4298104A (en) * 1979-12-17 1981-11-03 Henry Leong Luggage handle having releasable locking assembly
WO1987002967A1 (en) * 1985-11-18 1987-05-21 Polsun Manufacturing Corporation Bag handle
GB2210018A (en) * 1987-09-17 1989-06-01 Brian Posner Bag
US5161710A (en) * 1991-08-26 1992-11-10 Vaughan's Seed Company Container with integrally formed handle
US5813092A (en) * 1996-02-02 1998-09-29 Monaco, Llc Hanger handle for a recloseable bag
US20040011687A1 (en) * 2000-09-07 2004-01-22 Andre Charrin Portable package for a floral bouquet
US6907991B2 (en) * 2000-09-07 2005-06-21 Charrin Andre Portable package for a floral bouquet
US20050205632A1 (en) * 2002-10-02 2005-09-22 Harald Ristau Shopping bag to be attached in a shopping cart
EP1702857A1 (de) * 2005-03-16 2006-09-20 Angelika Schmitt Tragegriff für Behälter
US20080034536A1 (en) * 2006-05-08 2008-02-14 Terry Kinskey Cooperatively-engageable handles
WO2007133530A3 (en) * 2006-05-08 2008-08-21 Union Rich Usa Llc Cooperatively-engageable handles
US8356850B1 (en) * 2010-09-22 2013-01-22 In-Store Bagging Machine Company, LLC System and method for carrying and installing a plurality of empty ice bags into an ice bagging assembly

Also Published As

Publication number Publication date
CH464782A (de) 1968-10-31
DE6752244U (de) 1969-03-06

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