US2515376A

US2515376A - End stop for sealing closures

Info

Publication number: US2515376A
Application number: US689419A
Authority: US
Inventors: Carroll P Krupp
Original assignee: BF Goodrich Corp
Current assignee: Goodrich Corp
Priority date: 1946-08-09
Filing date: 1946-08-09
Publication date: 1950-07-18
Anticipated expiration: 1967-07-18

Description

55.12502] F.ZUPF

d M572? f,

July 18, 1950 c. P.KRUPP END STOP FOR SEALING CLOSURES yFiled. Aug, 9' 1946 Bril Patented July 18, 1950 END STP FOR SEALING CLOSURES Carroll P. Krupp, Barberton, Ohio, assignor to The B. F. Goodrich Company, New York, N. Y., a corporation of New York Application August 9, 1946, Serial No. 689,419

14 Claims. (Cl. 24-'205.11)

The invention relates to closures having topstops and especially to end sealing in conjunction with a top-stop.

Objects of the invention are to provide for stopping a slider or runner at a determinate location and for resisting relative tilting movement between the slider and the stop; to provide for retaining the slider at said location; to provide effectively for sealing adjacent margins of the closure including an end thereof; to provide for continuity of sealing around such end of the closure and for continuity of support of the sealing means around said`end; to provide for sealing by lip-action at said end while preventing breakage of the seal under iiexure of the margins of the closure; to provide for positioning and stopping the slider while supporting said sealing means around said end; and to provide for simplicity of construction, convenience of manufacture, and for effectiveness of operation.'

These and other objects and advantages of the invention will be apparent from the following description.

In the accompanying drawings which form a part of this specification and in which like numerals are employed to designate like parts throughout the same,

Fig. 1 is a plan view from above showing a sealing slide fastener structure including a closed end and a top-stop in the closed condition, and constructed in accordance with and embodying the invention, parts being broken away,

Fig. 2 is a view like Fig. 1 but showing only the closed end and top-stop in the partially opened condition, parts being broken away,

Fig. 3 is a plan view from below of the closed end and top-stop in the open condition, parts being broken away,

Fig. 4 is a sectional view taken along line 4--4 of Fig. 1,

Fig. 5 is a sectional view taken along line 5-5 of Fig. 2.

Fig. 6 is a sectional View taken along line 6--6 of Fig. 1,

Fig. 7 is a sectional view taken along line I-'I of Fig. 1, and

Fig. 8 is a perspective view from above of a bridge-stop element before assembly with the sealing slide fastener structure.

In the embodiment of the invention illustrated in the drawings, a slide fastener structure I0 effecting sealing by lip-action and having a closed end I I, is adapted for closing in a separable manner the adjacent margins of apertures in walls of articles such, for example, as tobacco pouches,

' wearing apparel, tents, footwear, fluid and bulk material containers, yand other related articles of manufacture; and is adapted especially for assembly as a unitary structure with the articles for convenience of manufacture of the fastener as an independent item. The sealing slide fastener structure I0, which may be, if desired, of suitable colored materials to conform to the particular application, has a pair of flexible margins or stringers I2, I3, desirably of plastic material or of woven fabric material such, for example, as cotton, silk, rayon, glass and other fibrousr material, terminating in the closed end. The stringers have adjacent beaded margins I4, I5 including flexible cords I6, I6 and II, I'I of suitable brous material attached to the material of such margins as by stitching I8, I8, or a suitable adhesive such, for example, as rubber cement, or by both.

Cooperating fastener elements or teeth I9, 26 of stiff material such, for example, as Zinc or aluminum alloy, brass, steel, Bakelite or other material of the desired strength and forming characteristics are'disposed in series along the margins I4, I5 and are attached to the beaded margins by engagement with the cords I6, I6 and Il, II and the fabric material of the stringers l2, I3. teeth 2l, 22, respectively, disposed short of the ends of the stringers at the closed end I I. A runner or slider 23 of brass or other suitable stiff material having a pull-tab 24 is slidably movable along the stringers for engaging and disengaging the teeth and joining the stringers throughout the extent of a slot 25 defined between the adjacent margins I4, I5, which slot terminates at the closed end Il.

A rigid bridge-stop element 26 of suitable stiff material, preferably metal, may be die-cast, molded, machined or otherwise formed. The element 26 is attached securely to the stringers I2, I3 at the closed end II and bridges the space between the spaced-apart margins of the stringers, providing for the stopping and holding of the runner 23 in the desired closing position at the end of the slot 25 and for maintaining the stringers in determinately spaced-apart relation. The bridge-stop element 26 may be of substantially the same thickness and depth as that of each fastener element, and may be attached as by .clamping at its apertured ends at 27, 28 to the beaded margins of the stringers, as shown especially in Figs. 1, 2 and 3.

The bridge-stop element 26 includes an indented portion 29 intermediate the spaced-apart margins I4, I5, which portion 29 may be generally Each series of teeth terminates at end stringers.

U-shape in plan and spans the space between the margins I4, I in a manner to receive in its indentation an end portion 3l]v of the runner 23. The construction also includes abutment or projecting portions 3|, 32 for contacting the runner and extending laterally outward from the ends of and in continuation ofthe..r legs ofthe indented Llshape portion-29 lwith suitably shaped slotted

f recesses

33, 34 therein'at the ends at 21, 28 for embracing the beaded margins I4, I5 and the cords I6, I6 and II, II as by clamping the same, f as shown especially in Figs. 3 and 6,.thus, prevent,i

ing spreading-apart lateral movement of-the The bridge-stop element 26 may be disposed across the slot 25 adjacent the end teeth 2i, 22

` in a manner such that the spacing between'theJ-f end tooth 2I and the projecting portion .53| of the. l;

element 26 is substantially equal to the spacing between adjacent teethj I 9`,'. I 9 at oneof'the. beaded margins Afor 'facilitating' a' snug .t'a'nd telescopic' engagement-of the bridge'rstop. elementfespecially the' .projectinglportions .3I,"32^v thereof,A with the.

runner,'..,as shown especially inFigsfl jandj.

Such; construction and arrangement offthe element v:2li i permits i a. desiredloverlapping. and over.- lyinglrelationlthereof lwith' 'over'hangin'g portions 23d; respectively, of the runner' 23,Jivhereby theV bridge-stop'v element. 26"c'ooper`ate`s with the 'runner in.` resisting .relative tilting movement therebetween,. and'iniaoilitatin'g the positioning. of the, runner in its. lclosing position"atthe" endo'f the .Slot 2 5.- f Tlie bridge-stop. element` 2also .co4y operates. Withthe runnerv and asealingele'ment 35 of resilient rlubber, or .other .rubber-like",material in effecting. a sealed 4condition continuouslyabout. the4 closedv end oitheslot 25,. as vdescribed more fully '.hrenaftnf v For. ,sealing l along the stringers and. closing, the end of ,theslot at the bridge-stop .element, the sealingelementii at. 36 extends along theb'eaded margin vI4.of thestringer I2, and.at..31 continu?.

ously about. ,the,close'd end.of' thleslot 25,- andat. 38 .extends .along .the other b'eaded'emargin I'of the., other, stringer...l3.. The. sealing'. element is preferablygenerally, L.shape in` crosssectiom and i, is bonded'tdandmountedat afaceof thestringf; ers .desirably in partdirectlylupon and.,.bridging the.teeth.l 9 and. 2.0..'and in partiipon the margins .f5

I4 andrI5..The sealing .element 35 includsa pore; tionat..3.5d;.35bprojecting laterally'y of the Slot Q and.finspacedrelationto theteethI at sa'idrface of the stringere .for acco'rnrnodatinf'g the upper .'plate. of the runner 23 therebetween, which DrOjec-ting portion tapers to an edge .for sealing bylipQ-action of .the edge of thepo'rtionat 35b.in contact with the. .sealing surface .of the other. portion. latiil attheothefmargin., l The sealing' felement at .SI'extending continubonded to' theouter surface' `2'9 of the. indented portion 29er the 'bridge-st'opelement. and includes" i theV tapered portion at 39?'projecting inward'lyf of theslot. in 'spaced relation tothe bridge-stop I element 26at'said face'of [the 'stringers. The` tapered portion at 391 is in continuation of the other'taperedV portions at 35d, 35lof' thesealing l element.

lQ hanging portions 23a, 23h of the latter overlie the element 26 in bracing and tilt-resisting relation therewithand being united and bonded throughout-itsputer.. surface 29a with the continuous end pontionglof lthe.-'resilient sealing element, braces Il5,,eiefctivelythe-.sealing element 35 at 31 against Aobjectionable distortion even under relatively severebendingand-twisting of the stringers. Such I 'n bracing y action together With the aforesaid resistance to relative tilting movement between the runner.. and lthe y bridge-stop element, prevents breakage4 of thel end sealV under exuraofthe. closure by'separating movementb'etwen the por-f tion 3l of the sealing Yelement and the runner 23. in the. outward `directionrelativeto `saidf'ac'e of the. stringers orstructure IIJ'L", j

mayibedisposed thelspace b'etweenthe' beaded and maybe" integraljwitlr the sealing element at, 30 SIor closing the space Vand joining the 'stringers at the closed end a'rrangerne'ntrlfl:l The stringers I2,'""I 3 mayha've thin layers '4h32' of, suitable rubber-like' material adhered theretd' at, said i ace of the' structure Iiia'nd in' continuationbf the44V bo'dy'A fand thesealingjelement 35f'ormaki`ng the.

stringers impervious andresistant to. leakage of fluid ,through ,the 'fabricrnaterialgand forlfacilitat` ing the independent `adhesive, attachment of Ithe closure to the'wallslof the articles.

40 For. facilitating `retainingA the vl'runner 'in the l closing position at the bridgeestop element `26, shoulder or blockelements 43,'"44 `of suitablefre` silient rubberglike material may be mounted at theother. face'of the structure I0- at the beaded margins ci the stringers ands'ecurely attached to the` latter and-to"thebridgefstopelement, as

shown especially in Figs, 3 and 5. The block ele.- ments. 43,44 are desirably'bonded to the outer surface 29afof the ibrdge-stopgelemient"26 at the' pro-e 0 jecting portions r3 Ig32 and the 'indented' portion 29;;l

and project beyond tliebriidge-:stop element'in the' outwarddirection relative tosaidothe'r face of the structure III; :as shown especially in Figlg." The block elements kare disposed frictiognallyiengage 55...the lower plate or th'e'runnen-whenth'e latterisin` thel closing; position 'with` thef under -faces, of jth'e overhanging portions 2311,J 2363"'overlying."the` bridge-stop element .26, thus .facilitating :thej re.- taining of therunner in its closing positionthere-f. by preventing accidentallbreakage of the; se'alat the closed end of the'slot' 25 under accidental slid-, ing movement of therunner away from such end? The stringers and the portions 'at 36,' 38lbf the sealingelement 35 may be united at the otheiend e-0f the Aslot -25"opposite' theclosed end-II'in"any.

suitable manner for closing. such opposite end. of

theiclosure." ,Tl'iis may be Vjaccornplis'he'cl .byadhering together end portions ,4 5;'4 "of thesealing element 35. in overlapping rhelatiorifto'one another Tlieconstruction andarrangementof thecon- ."hand' adheringa sealingjstrip..'{I'Iof4 suitableilfrzy tinuous end portion at A3'I "of th'ealingielement.f 35 and the Ybridge-stop element ZSproVides th desired *bracing relation between. suchfe'lements. 26 and '35"and fac'ilitates'the flexureof the resili" A ient'tapered portion Vat 39a'ndY the sealing bylipL'MNS-ij A'Iri'theropeni pervious` fabric material? in Vsuperimposed and; overlappingv relation '.With'the`endA 'portions 45;' 46' andthe' stringe'rsA I2, "1I 3,;fas' shown. eSpecially inv ng' operation-of the"c1osurej,"' the 1" margins -l 4,1 I Ebeyond thebridge-stop' element 25 ati 5376 slidingly along the stringers toward the closed end I I and top-stop until the runner engages and overlies the bridge-stop element 26, as shown especially in Fig. 1. Y v

Such latter movement engages the teethV and draws together the portions at 36 and 38 of the sealing element in overlapping relation to one another with the overlying tapered portion 35h at one lmargin flexed and the edge thereof sealing by lip-action against the underlying tapered portion 35a at the other margin continuously along the slot 25 and also against a side .of the upper plate of the runner 23, the edge of the other tapered portion 35a, contacting the other side of the upper plate of the runner. in sealing relation.

The tapered portion 39 of the continuous end portion at 3I being braced and supported by the bridge-'stop element '2E is flexed outwardly relative to the adjacent face of the stringers with its edge sealing by lip-action against the overhanging portions of the upper plate andthe end portion 30 of the runner providing continuity of the sealing about the closed end of the slot and in continuation of the sealing along the stringers, thereby completing the closure of the slot 25. l

The runner 23 in theclosing position engages telescopically with the end teeth 2l, 22 and the.

bridge-stop element 26 and has its end portion 30 positioned in the indentation of the indented portion 29, while 'the projecting portions 3I, 32 of the bridge-stop element are disposed between the upper and lower plates of and in contact with the runner 33, all of which facilitates eiecting the desired resistance to relative tilting movement between'the runner and the bridge-stop element 26, thereby providing iirin support .to the continuous end portion 3'I of the sealing element. The supporting'and stiffening action eiected by the coaction of the runner and bridge-stop element prevents objectionable flexure and undue distortion of the sealing element at such closed end I I under bending and twisting of the stringers, and facilitates effective lip-sealing action continuously about the closed end. With the runner in its closing position, the shoulder or block

elements

43, 44 press resiliently against the adjacent under face of the lower plate element of the runner and facilitate retaining the runner in such position and resisting accidental movement of the runner.

The fabric and rubber-like parts of the closure are preferably united by vulcanization under heat and pressure. The hereinabove described construction advantageously provides for conveniently closing and sealing the closure throughout the extent of the slot including the ends of the latter, and for stopping and holding the runner in the desired closing position for cooperating with the sealing element to effect sealing at the closed end II, while resisting relative tilting movement between the runner and the bridgestop element in addition to resisting objectionable distortion of the sealing element where the latter extends continuously about the closed end of the slot 25.

Variations vmay be made without departing from the scope of the invention as it is defined lin the following claims,

vI claim:v 11.. A closure for comprising cooperating fastener elements at said margins'for separably uniting the same, a runner :slidable alongvsaid margins forv engaging and disengaging said fastener elements and including an overhanging plate portion and an end portiony disposable at the-termination of said fastener elements in the closing position of the runner, and means including a bridge-stop elementof substantially inflexible construction attached to saidmargins adjacent the termination of said fastener elements and disposed laterally between said margins for maintaining the latter a substantial extent of said bridge-stop element' `.in bracing relation therewith in said closing position of the runner to resist relative tilting movement between said runner and said bridge-stop element, and a resilient element mounted on said bridge-stop element and having a projecting portion terminating in an edge extending over said bridge-stop element in spaced-apart relation thereto providing a recess therebetween to receive therein said overhanging plate portion of said runner with said edge of said projecting porltion in contact with said overhanging plate portion in said closing position.

2. A closure for adjacent margins, said closurer comprising cooperating fastener elements at said m'argins'for separably uniting the same, a runner slidable along said margins for engaging and disengaging'said fastener elements, a bridge-stop element of substantially inflexible construction attached to said margins adjacent the termination of said fastener elements and disposed laterally between said margins to maintain the Inargins in laterally fixed spaced-apart relation and to stop said runner at the closing position of the latter, said runner including an overhanging portion at aface of said margins for overlying said bridge-stop element in bracing relation therewith in said closing position of the runner to resist relative tilting movement between said runner and said bridge-stop element, and resilient means including a surface of resilient rubber-like material at said margins adjacent said bridge-stop element for yieldably contacting and frictionally retaining said runner at said closing position in the overlying relation with said bridgestop element.

'3.VA closure for adjacent margins, said closure comprising cooperating fastener elementsat said margins for separably uniting the same, a runner slidable along 'said margins for engaging and disengaging said fastener elements, a bridge-stop `element attached to said margins adjacent the termination of said fastener elements and disposed laterally between said margins to maintain the margins in determinately spaced-apart relation and to stop said runner at the closing posiftion of the latter, said runner including an over- .runner and said bridge-stop element, and a blccl;v

adjacent margins', said closure-1 onsaid margins at said face of the closure and positioned adjacent said'bridge-stop element to press against the under face of said plate element in said closing positionfor frictionally retaining said runner at' said closing position, and a seal-,

ing element extendingalong one of said margins at the other face of the closure and continuously about said closedend and along the other margin, said sealing element including a portion at the rst said margin projecting laterally toward g the' sealing element at said other margin and tapering to an edge for sealing bylip-action of said edge against said sealing element at said other margin,A lthe tapered portion of said sealin'g'element extending continuously about said closed vend for sealing by lip-action of the edge thereof yagainst said runner and being attached to said bridge-stop-element atan outer surface of said indented portion in bracing relation for resisting separating movement between said tapered portion and said runner under ilexure of said margins.

9. A closure for adjacent margins, said closure comprising cooperating fastener elements at said margins for separably uniting the same, a runner slidable along said margins for engaging and disengaging said fastener elements, and a bridgestop element of substantially inflexible construction attached to said margins adjacent the termination of said fastener elements and disposed laterally between said margins to maintain the margins in laterally fixed spaced-apart relation and to stop said runner at the closing position of the latter, said bridge-stop element presenting a surface facing in a direction normal to a face of said margins, said runner including an overhanging portion presenting a surface facing in the opposite direction for overlying said surface of said bridge-stop element in face-to-face adjacent conforming relation therewith in said closing position of the runner to resist relative tilting movement in said normal direction between said runner and said bridge-stop element, and a resilient element supported by said bridge-stop element and extending over said surface thereof in spaced-apart relation thereto providing a retaining recess therebetween for said overhanging portion of said runner in said closing position.

10. A closure for adjacent margins, said closure comprising cooperating fastener elements at said margins for separably uniting the same, a runner slidable along said margins for engaging and disengaging said fastener elements and including an overhanging portion presenting a substantially fiat surface facing in the direction normal to and toward a face of said margins and said runner including an end portion disposable at the termination of said fastener elements in the closing position of the runner, and a bridge-stop element of substantially inflexible construction attached to said margins adjacent the termination of said fastener elements and disposed laterally between said margins to maintain the margins in laterally ixed spaced-apart relation and to stop said runner at said closing position, said bridge-stop element including an indented portion intermediate the spaced-apart margins for receiving said end portion of the runner and including a substantially flat surface facing in the opposite direction for overlying said surface of said overhanging portion of the runner in face-to-face adjacent substantially parallel relation therewith in said closing position of the runner to resist relative tilting movement in said normal direction between said runner and said .bridge-stop element, and a sealing element of resilient rubber having a portion tapering to an edge and mounted to extend over Said flat surface of vcomprising cooperating fastener elements at said margins for separably uniting the same, a runner slidable along said margins for engaging and disengaging said fastener elements, and a bridgestop=element v'attached to said margins adjacent the termination of said fastenerelements and A'disposed laterally between said margins to maintain the margins laterally spaced-apart and to stop said runner at the closing position of the latter, said bridge-stop element presenting an outwardly facing surface at a face of said margins, said runner including an overhanging portion presenting a surface for disposition in overlying and contacting relation with said surface of said bridge-stop element in said closing position of the runner, one of said surfaces being of relatively non-frictional material and the other surface being of elastic friction material for yieldable frictional engagement with the relatively non-frictional surface to yieldably and frictionally retain said runner at said closing position.

12. A closure for adacent margins, said closure comprising cooperating fastener elements at said margins for separably uniting the same, a runner including a plate element slidable along said margins for engaging and disengaging said fastener elements, and a bridge-stop element attached to said margins adjacent the termination of said fastener elements and disposed laterally between said margins to maintain the margins in laterally spaced-apart relation and to stop said runner at the closing positon of the latter, said bridge-stop element presenting a surface of resilient rubber-like material facing in the direction outwardly away from a face of said margins, said plate element of the runner including an overhanging portion presenting a surface of relatively non-frictional material facing in the direction toward said face of said margins for disposition in overlying and contacting relation with the resilient surface of said bridge-stop element and for yieldable frictional engagement therewith in the closing position of said runner so as to yieldably and frictionally retain sai'd runner at said closing position.

13. A bridge-stop element for a slide fastener closure including adjacent margins, cooperating fastener elements at said margins for separably uniting the same, and a runner for engaging and disengaging said fastener elements, said bridgestop element comprising a body of substantially inflexible construction having an indentation extending longitudinally therein from a face thereof for receiving an end portion of said runner in the closing position thereof and having a portion at each opposite side of said indentation extending laterally thereof for attachment to said margins at adjacent edges thereof to maintain said margins in laterally fixed spaced-apart relation, and said bridge-stop element including a surface of elastic friction material integrally united with said body at a face thereof for yieldably engaging and frictionally retaining said runner in its clos-