US3857141A - End stop for sliding clasp fasteners - Google Patents

End stop for sliding clasp fasteners Download PDF

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Publication number
US3857141A
US3857141A US00379964A US37996473A US3857141A US 3857141 A US3857141 A US 3857141A US 00379964 A US00379964 A US 00379964A US 37996473 A US37996473 A US 37996473A US 3857141 A US3857141 A US 3857141A
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US
United States
Prior art keywords
fastener
strip
end stop
slider
fastener elements
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
US00379964A
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English (en)
Inventor
H Ebata
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Individual
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Individual
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Filing date
Publication date
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Publication of US3857141A publication Critical patent/US3857141A/en
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Classifications

    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00—Slide fasteners
    • A44B19/24—Details
    • A44B19/36—Means for permanently uniting the stringers at the end; Means for stopping movement of slider at the end
    • 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
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/25—Zipper or required component thereof
    • Y10T24/2596—Zipper or required component thereof including means attaching interlocking surfaces together

Definitions

  • This invention relates to sliding clasp fasteners and Amore particularly to an improved end stop for use in restricting the movement of the slider thereof.
  • a sliding clasp fastener contemplated in the practice of the invention comprises a pair of oppositely disposed Stringer tapes each carrying along their respective longitudinal edges a row of interlocking fastener elements formed from a continuous plastic filament into a spiral or meandering structure, and a slider arranged to move along the longitudinal edges of the Stringer tapes to take the fastener elements into and out of engagement with one another thereby closing and opening the fastener.
  • end stops anchored in place at a top and a bottom end region of the fastener. It is to the bottom end stop which the present invention relates.
  • bottom end stops for preventing the slider from running off the rows of fastener elements.
  • One such known end stop is formed by simply melting a group of plastic fastener elements together adjacent the bottom end of the fastener.
  • Another end stop known in the art is formed by also melting or fusing a plastic film together with the fastener elements, and causing the molten material to spread over the full width of the fastener, with a stopper element formed at the upper end of the molten region.
  • an end stop which consists of a relatively narrow plastic film fused to impregnate the fastener over its entire width and a stop member projecting centrally of the impregnated area for engagement with the slider.
  • the first mentioned prior art end stop has the disadvantage that it is liable to excessive wear or damage from repeated abutting engagement direct with the neck of the slider connecting its wing members and hence has very short service life.
  • the aforementioned second end stop is arranged such that the stopper element is brought into impinging contact with the flange end of the slider, with the results that it is often separated from the fastener tape. Since the plastic film is applied to the entire width of the fastener ⁇ this area of the fastener tape becomes stiff, rendering it difficult to run a sewing stitch therealong.
  • the third known end stop has the drawback that the fastener is susceptible to flexing about the border defined between the plastic impregnated region and nonimpregnated region of the fastener where the sewn stitches are restricted to move and hence are liable to become torn off or damaged.
  • a further disadvantage which is common to the various conventional end stop devices is that when the chain of interlocking fastener elements is broken off, it is extremely difficult to bring the chain completely back into meshed condition.
  • a more specific object of the invention is to provide an improved bottom end stop for sliding clasp fasteners which is held securely in place against displacement or separation from the fastener in repeated abutting engagement with the slider.
  • Another specific object of the invention is to provide an improved bottom end stop which is constructed such that the sewn stitches located adjacent to the end stop are held immune from damage when the fastener is bent or flexed.
  • a further specific object of the invention is to provide an improved end stop which has structural features to permit the slider, when the fastener cracks open unintentionally, to take the disengaged fastener elements backinto normal engagement with one another with utmost ease.
  • FIG. 1 is a plan view of a sliding clasp fastener on which an end stop embodying the invention is mounted, the fastener being shown as in closed disposition;
  • FIG. 2 is a transverse cross-sectional view taken on the line II--II of FIG. 1;
  • FIG. 3 is a plan view of the fastener which has been opened by a slider.
  • a sliding clasp fastener 10 of the conventional type which comprises a pair of oppositely disposed stringer tapes 11,11, a row of fastener elements 12 secured by sewing threads 13 to the longitudinal inner edge of each tape l1 and a slider 14 mounted on the fastener for reciprocal movement along the opposed longitudinal edges of the Stringer tapes 11,11 to cause the fastener elements l2 to come into and out of engagement with one another in the usual manner.
  • the fastener elements 12 are made from a continuous plastic filament and formed into a spiral structure as shown.
  • the slider 14 partly shown in FIG. 3 is of the usual construction consisting generally of spaced-apart upper wing (not shown) and lower wing 15, respectively, inwardly bent to form side flanges 16,16 and connected by a neck 17 in such a manner as to provide substantially a Y-shaped channel for guiding the movement of the fastener elements 12 therethrough.
  • Designated at 18 is a bottom end stop provided in accordance with the invention. which end stop is adapted for restricting thereat the downward movement of the slider 14 when the latter is manipulated to open the fastener 10.
  • the bottom end stop 18 is made of a plastic material such as a thermoplastic resin and is substantially square in shape. It has a width w substantially corresponding to a distance between the side flange ends 16',16' of the slider I4 and not exceeding a distance d between the opposed longitudinal lines of stitchings s on the two mated Stringer tapes 11,11 so as not to interfere with the sewing operation.
  • the end stop 18 has a forward marginal end 18' disposed for abutting engagement with the flange ends l6,l6 of the slider 14.
  • the end stop 18 is supplied in the form of a plastic chip of film at a desired location near the bottom end area of the fastener and secured thereto by means of a high-frequency heating, supersonic processing or the like whereby the chip or film is fused to encompass a group of interengaged fastener elements 12 and impregnate into the tapes 11,11.
  • interengaged portions 12' of a group of fastener elements 12 immediately beyond the forward marginal ends 16',16 of the slider 14 are deformed by means of heat and pressure into a solid piece of tongue 19 which is joined integrally with the body of the end stop 18.
  • the number of fastener elements 12 to be thus deformed corresponds preferably to those elements 12 which remain interengaged when the slider 14 has been moved down into abutment with the end stop 18 to fully open the fastener 10.
  • the tongue 19 serves to orient the endmost fastener elements into condition for ready reengagement with one another simply by bringing the slider 14 back to its starting position at the end stop 18.
  • tongue 19 reinforces the end stop 18 against severe stresses applied by the slider 14 and helps retain the positional stability of the end stop 18.
  • the tongue 19, which is rigid to some extent while resilient, serves to prohibit the tendency of the fastener 10 to flex along the forward marginal end 18' of the end stop 18 which could otherwise occur and cause the stitches sto become torn y off or damaged.
  • tongue 20 extending from the rearward end of the end stop 18 in a direction opposite to the first-mentioned tongue 19.
  • the tongue 20 is formed by deforming a group of elements 12 in the manner above described, and it is adapted to reinforce the end stop 18 against stresses imposed on the fastener 10 particularly in a direction to split apart the Stringer tapes 11,1 1.
  • a sliding clasp fastener of the type which comprises a pair of oppositely disposed Stringer tapes each carrying along their respective longitudinal edges a row of interlocking fastener elements made of a continuous plastic filament and a slider having side flanges and mounted on the fastener for reciprocal movement along the said longitudinal edges
  • the improved bottom end stop for restricting the movement of the slider which comprises a thermoplastic strip laid overa group of fastener elements adjacent the bottom end of the fastener, means securing said strip to said fastener, said strip being substantially square in shape and having a width corresponding substantially to the distance between the side flange ends of the slider, and a tongue formed by deforming a group of interengaged parts of fastener elements adjacent to the forward marginal end of said square strip, said tongue being joined integrally with said strip.
  • a bottom end stop as defined in claim l which further includes another tongue formed by deforming a group of fastener elements adjacent to the rearward marginal end of said square strip and joined integrally therewith.

Landscapes

  • Slide Fasteners (AREA)
US00379964A 1972-07-18 1973-07-17 End stop for sliding clasp fasteners Expired - Lifetime US3857141A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1972085301U JPS52650Y2 (fr) 1972-07-18 1972-07-18

Publications (1)

Publication Number Publication Date
US3857141A true US3857141A (en) 1974-12-31

Family

ID=13854755

Family Applications (1)

Application Number Title Priority Date Filing Date
US00379964A Expired - Lifetime US3857141A (en) 1972-07-18 1973-07-17 End stop for sliding clasp fasteners

Country Status (11)

Country Link
US (1) US3857141A (fr)
JP (1) JPS52650Y2 (fr)
AU (1) AU468924B2 (fr)
BE (1) BE802501A (fr)
CA (1) CA985879A (fr)
DE (1) DE2336595C3 (fr)
ES (1) ES416954A1 (fr)
FR (1) FR2192783B1 (fr)
GB (1) GB1382760A (fr)
IT (1) IT991788B (fr)
NL (1) NL171014C (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110113596A1 (en) * 2009-11-18 2011-05-19 Ykk Corporation Slide fastener

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS514521Y2 (fr) * 1972-02-05 1976-02-07
JPS5651773Y2 (fr) * 1977-10-08 1981-12-03

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2220136A (en) * 1937-03-06 1940-11-05 Whitehall Patents Corp End stop for thermoplastic fasteners
US3309746A (en) * 1964-05-26 1967-03-21 Talon Inc End stops
US3435489A (en) * 1966-12-06 1969-04-01 Coats & Clark Box and pin separator for fastener stringers
US3482292A (en) * 1965-11-05 1969-12-09 Opti Holding Ag Endstop members for slide fasteners
US3672008A (en) * 1970-05-04 1972-06-27 Textron Inc Slide fastener stop assembly

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3263291A (en) * 1965-03-12 1966-08-02 Scovill Manufacturing Co End stop for plastic zipper
DE1287838B (de) * 1965-04-29 1969-01-23 Opti-Werk Gmbh & Co, 4300 Essen Verfahren und Vorrichtung zum gleichzeitigen Herstellen des oberen und/oder unteren Endgliedes eines Reißverschlusses
DE1907775A1 (de) * 1968-11-25 1970-08-20 Solidar Heiligenstadt Kom Fuer Verfahren und Vorrichtung zur Herstellung von Bandverbindern an Plastreissverschluessen
FR2093071A5 (fr) * 1970-06-01 1972-01-28 Financ Fse Licences Brev

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2220136A (en) * 1937-03-06 1940-11-05 Whitehall Patents Corp End stop for thermoplastic fasteners
US3309746A (en) * 1964-05-26 1967-03-21 Talon Inc End stops
US3482292A (en) * 1965-11-05 1969-12-09 Opti Holding Ag Endstop members for slide fasteners
US3435489A (en) * 1966-12-06 1969-04-01 Coats & Clark Box and pin separator for fastener stringers
US3672008A (en) * 1970-05-04 1972-06-27 Textron Inc Slide fastener stop assembly

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110113596A1 (en) * 2009-11-18 2011-05-19 Ykk Corporation Slide fastener
US8402613B2 (en) * 2009-11-18 2013-03-26 Ykk Corporation Slide fastener
EP2324726A3 (fr) * 2009-11-18 2013-07-10 YKK Corporation Fermeture à glissière

Also Published As

Publication number Publication date
JPS4943102U (fr) 1974-04-16
NL171014C (nl) 1983-02-01
IT991788B (it) 1975-08-30
CA985879A (en) 1976-03-23
GB1382760A (en) 1975-02-05
JPS52650Y2 (fr) 1977-01-10
NL7309409A (fr) 1974-01-22
DE2336595B2 (de) 1980-10-30
DE2336595A1 (de) 1974-02-07
BE802501A (fr) 1973-11-16
AU5827173A (en) 1975-01-23
FR2192783A1 (fr) 1974-02-15
FR2192783B1 (fr) 1978-10-27
AU468924B2 (en) 1976-01-29
DE2336595C3 (de) 1981-07-09
ES416954A1 (es) 1976-03-16

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