US3767155A - Apparatus for molding longitudinally spaced block portions about laterally spaced parallel inserts - Google Patents

Apparatus for molding longitudinally spaced block portions about laterally spaced parallel inserts Download PDF

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Publication number
US3767155A
US3767155A US00212328A US3767155DA US3767155A US 3767155 A US3767155 A US 3767155A US 00212328 A US00212328 A US 00212328A US 3767155D A US3767155D A US 3767155DA US 3767155 A US3767155 A US 3767155A
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United States
Prior art keywords
molding
wires
inserts
molding dies
block portions
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Expired - Lifetime
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US00212328A
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English (en)
Inventor
J Hovorka
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AT&T Corp
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Western Electric Co Inc
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Assigned to AT & T TECHNOLOGIES, INC., reassignment AT & T TECHNOLOGIES, INC., CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE JAN. 3,1984 Assignors: WESTERN ELECTRIC COMPANY, INCORPORATED
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    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14549—Coating rod-like, wire-like or belt-like articles
    • B29C45/14565—Coating rod-like, wire-like or belt-like articles at spaced locations, e.g. coaxial-cable wires

Definitions

  • spaced block portions are molded about parallel wires by gripping sectors of the wires on opposite sides thereof and introducing molding material into a first mold cavity for forming one of the block portions. Molding material then flows from the first mold cavity, through enlarged channels extending longitudinally between the gripped wires and parallel thereto,
  • molding dies of the apparatus are formed of pressed and sintered powdered metal of a special composition. Wire guides of special design help preclude the wires from becoming misaligned prior to a molding operation.
  • the molded block member is symmetrical on either side of a plane containing the wires, to reduce its tendency to warp or crack during and subsequent to curing.
  • wires and the upper mold cavity portion being relatively open and unobstructed, becomes filled with molding material.
  • the molding material is forced downward between the closely spaced wires to fill the lower mold cavity portion.
  • the molding material is introduced into the mold cavity in this-manner so that flow of the molding material against the wires in a horizontal plane, which could cause lateral shifting of the wires, issubstantially eliminated.
  • the molding material which flows between a wire and its seat subsequently adheres to and remains in the seat, instead of being removed from the mold with the wire. If then becomes impossible for a subsequent wire to seat properly and the wire is out of alignment even before injection of the molding material' has begun. Since the wire hold-down bar portions of the upper mold member are offset relative to the majority of the seats, downward bending of this wire by one of these bar portions also may occur as the mold closes, thereby further aggravating the resultant wild wire" condition. Eventually, if the accumulation of material in the seat is repeated on subsequent shots the wild wire condition caused thereby may become aggravated to the point that the apparatus must be shut down so that the mold can be cleaned.
  • a pair of longitudinally spaced block portions are molded about a plurality of laterally spaced parallel inserts by gripping sectors of the inserts on opposite sides thereof, between the portions of the inserts which are to be enclosed by the block portions, such that substantially no molding material can flow into engagement with the gripped sectors.
  • Molding material then is injected into a first mold cavity for forming one of the block portions.
  • molding material flows from the first mold cavity, through channels extending longitudinally between opposed sectors of the inserts and parallel to the inserts, into a second mold cavity for forming the second block portion about the inserts.
  • the molding material in the channels subsequently forms reinforcing ribs which are bonded to the opposed sectors of the inserts and which integrally connect the molded block portions.
  • the channels are enlarged relative to the inserts to produce reinforcing ribs of relatively strong construction.
  • the molded block portions and the ribs are formed so that they are symmetrical on either side of a plane containing the inserts, to reduce warping or cracking of the molded material during or subsequent to curing.
  • Wire guides of special design also are provided to help preclude the wires from becoming misaligned prior to a molding operation.
  • molding dies of the apparatus preferably are formed of a pressed and sintered metal powder of a special composition.
  • FIG. 1 is a cross-sectional view of molding apparatus in accordance with the invention, taken substantially along its vertical centerline, as indicated by the line l-l of FIG. 2;
  • FIG. 2 is a plan view of a lower molding die of the molding apparatus as seen along a parting line defined by the line 2-2 in FIG. 1;
  • FIG. 3 is an enlarged cross-sectional view of the molding apparatus, taken along the line 3-3 in FIG. 2;
  • FIG. 4 is a further enlarged cross-sectional view of a portion of the molding apparatus, similar to FIG. 3, taken along the line 4-4 in FIG. 2;
  • FIG. 5 is an enlarged view of a wire guide for the molding apparatus, as seen along the line 5-5 in FIG.
  • FIG. 6 is an isometric view of a wire spring relay comb formed by the molding apparatus of FIGS. 1-5;
  • FIG. 7A is a plan view of a portion of a wire spring relay comb, illustrating a wild wire condition
  • FIG. 7B is a side view of a portion of a wire spring relay comb, illustrating another wild wire" condition.
  • apparatus for molding an article 11, such as a wire spring comb of the type used in wire spring relays, wherein the comb includes a block member 12 which is molded about a plurality of parallel resilient wires or inserts 138 of electrically conducting material, the wires having portions projecting from the opposite ends of the block member.
  • the molded block member 12 is symmetrical on both sides of a plane containing the wires13S.
  • the molded block member 12 includes a plurality of transversely extending rectangular block portions 12a which enclose the wires 13S and which are integrally interconnected to one another adjacent their opposite ends by rectangular shaped ribs 12b and intermediate their ends by elliptically shaped ribs 12c (best shown in FIG. 4) disposed between the wires and bonded thereto.
  • the projecting portions of the wires 138 must extend substantially parallel to one another, as shown in FIG. 6.
  • FIGS. 7A and 7B occasionally a wild wire condition occurs, in which certain wires 138 of a comb 11 extend from its block member 12' in non-parallel relationship and may even criss-cross (FIG. 7A).
  • the misaligned projecting portions of the wires 138 then must be straightened, if possible, before the comb 1 l is subjected to additional processing, and a primary purpose of the subject invention is to reduce the occurrence of these wild wire" conditions to a minimum.
  • the molding apparatus disclosed in FIGS. 1-5 is intended for use in apparatus of the general type disclosed in the U.S. Pat. No. 2,794,21 l to R. W. Brown et al, and capable of molding the block members 12 about a plurality of continuous parallel and horizontally disposed wires 13 at spaced intervals as the wires are intermittently advanced therethrough.
  • the wires 13 are advanced therethrough from left to right in FIG. 1, by a reciprocating feed mechanism (not shown) and under'suitable back tension which tends to keep the wires in parallel alignment.
  • the wires 13 are severed between adjacent ones of the molded block members 12 to form the wire spring relay combs l 1, having the projecting wires 138, as shown in FIG. 6.
  • the disclosed apparatus includes opposed lower and upper molding dies 16 and 17 for molding one of the block members 12 about the wires 13.
  • the lower molding die 16 is mounted on a lower fixed platen 18 and the upper molding die 17 is mounted on an upper platen 19 which is movable perpendicular to a parting line of the apparatus as defined by the line 2-2 in FIG. 1, and relative to the lower platen between an open position (not shown) and a closed molding position as shown in FIG. 1.
  • an open position not shown
  • a closed molding position as shown in FIG. 1.
  • the lower and upper platen l8 and 19 carry another set of molding dies 21 and 22, identical to the molding dies 16 and 17, whereby the disclosed apparatus is capable of molding two block members 12 about the wires 13 simultaneously.
  • the molded block members 12 and the wires 13 are ejected from the molding dies 16, 17 and 21, 22 by suitable ejector pins 23 in a well known manner.
  • the wires 13 then are advanced to rmve the molded block members 12 out of molding position, and to position new portions of the wires in molding position.
  • the molding dies 21 and 22 are identical in construction and function to the molding dies 16 and 17, only the molding dies 16 and 17 have been disclosed in detail and will be described.
  • the lower molding die 16 includes a series of horizontally disposed cavity portions l6a which are longitudinally spaced and which extend transversely relative to the wires 13.
  • the upper molding die 17 includes cavity portions 17a which are opposed and identical to their respective cavity portions 16a.
  • each end mold cavity portion 16a is formed by a replaceable die insert 24 having a row of semi-circular Wire receiving and aligning grooves 24a formed therein and provided with suitable seals (not shown) to prevent flashing along the wires 13 during a molding operation.
  • An outer wall of each end mold cavity portion 17a also is formed by a similar replaceable die insert 26 having a row of wire receiving and aligning grooves 26a in opposed relationship to the grooves 24a.
  • the die inserts 24 and 26 are removably secured in elongated horizontal slots in the molding dies 16 and 17 in any suitable manner. When the apparatus is closed, the mold cavity portions 16a and 17a cooperate to form a series of substantially separate mold cavities 16a-17a for forming respective ones of the block portions 12a of the wire spring relay comb l1.
  • the lower molding die 16 includes horizontally extending rows of upwardly concave arcuate seats 16b for receiving lower sectors of the wires 13 in mating engagement in a molding operation.
  • the opposed arcuate seats 16b and 17b cooperate to captivate the wires 13 securely therebetween to prevent shifting of the wires during a molding operation and to preclude molding material from flowing between the wires and the engaged sectors of the seats.
  • the lower and upper molding dies 16 and 17 have opposed arcuate surface portions or slots 16c and 170 which form channels 160-170 for interconnecting the mold cavities 16a-l7a when the molding apparatus is closed, and for forming the elliptically shaped interconnecting ribs 12c the respective surface portions and seats intersecting in opposed spaced relationship so that the ribs are formed in bonded engagement with opposed sectors of the wires 13, as shown in FIGS. 3 and 4.
  • the channels 160-170 are enlarged relative to the wires to facilitate the flow of molding material through the channels and so that the ribs 12c will be formed of a substantial amount of molding material and thus be of relatively strong construction. As is best shown in FIGS.
  • the molding dies 16 and 17 and the platen 18 and 19 also include a runner system 27 which extends to a gate 28 in the lower molding die 16, the gate opening into the centermost one of the mold cavity portions 16a of the lower molding die at one side thereof and at the parting line of the apparatus.
  • the lower and upper molding dies 16 and 17 are of symmetrical construction about the parting line of the apparatus, whereby each of the wire spring relay combs 11 is symmetrical about the plane containing the wires 13 of the comb, as noted above and as shown in FIG. 6.
  • each of the wire spring relay combs 11 is symmetrical about the plane containing the wires 13 of the comb, as noted above and as shown in FIG. 6.
  • wire guide combs 29 are suitably securedto the lower platen l8 and are receivable in suitable recesses in the upper mold members 17 and 22 when the apparatus is closed.
  • Each wire guide comb 29 includes a plurality of laterally spaced upwardly projecting teeth 29a, with the outermost teeth extending substantially above the teeth 24 and 26, as the molding apparatus is closed.
  • top edges of the teeth 29a are taupper extremities of the intermediate teeth define pointed wire locating portions 29d.
  • the molding dies 16 and 17 are formed of a pressed and sintered metal powder composition.
  • favorable results have been'achieved utilizing a composition containing iron on the order of 94.5 i 4.0 percent, carbon on the order of 0.50 i 0.25 percent, nickel on the order of 2.0 i- 1.0 percent, and one or more suitable bonding metals, such as molybdenum, manganese or niobium, up to a combined maximum of 2 percent;
  • the nickel is added to make the molding dies 16 and 17 resilient in the sense that they will not be brittle and subject to cracking.
  • the composition should not include any copper since it has been found that this metal tends to cause deformation of the molding dies 16 and 17 during heat treating and to make them brittle in nature.
  • the molding dies 16 and 17 may be press-formed directly to the configuration as shown in the drawing, or certain parts thereof, such as the slots OPERATION
  • the wires 13 In operation, after the molding apparatus has been opened after each molding cycle the wires 13 generally extend through the apparatus, under tension, at an intermediate level between the lower and upper platen l8 and 19 and above the intermediate teeth 29a of the wire guide combs 29, as illustrated by the dashed lines in FIG. 5, so that the molded block members 12 and the wires can be advanced through the apparatus.
  • the wires 13 may have shifted horizontally out of alignment with the wire guide slots 2%, such as to the left, as illustrated by the single dotted line circle 13m in FIG. 5. Then, as the upper platen 19 subsequently begins to move downward to its closed molding position, as shown in FIG. 1, the left-hand outermost wire 13 will initially engage the adjacent relatively tall outermost tooth 29a and be cammed inward to the right. Since the wires 13 are interconnected by previously molded ones of the block members 12 and are under tension, this camming action causes all of the wires to be shifted laterally as a unit.
  • the outermost teeth 29a insure that the wires 13 will always be in vertical alignment with the upper portions of their respective guide slots 29b, as defined by the upper pointed extremities 29d of the intermediate teeth 29a, as the molding apparatus begins to close.
  • the upper pointed extremities 29d of the intermediate teeth 29a then pass between the downwardly moving wires 13 and the wires continue to be moved downward into the seats 29c, thereby locating the wires substantially in alignment with the arcuate seats 16b and 17b of the molding dies 16 and 17 and the wire receiving grooves 240 and 26a in the die inserts 24 and 26.
  • the opposed arcuate seats 16b and 17b of the molding dies 16 and 17 receive their associated sectors of the wires 13 in mating engagement and captivate the wires securely therebetween.
  • This seating and captivating of the wires 13 is accomplished even though the wires may be nicked or slightly bent, as the result of the inherent camming ability of the opposed arcuate seats 16b and 17b and the high pressure which they are capable of exerting on such wires as the apparatus reaches its closed position.
  • the opposed seats 16b and 17b in effect, also form seals about the engaged sectors of the wires 13, such that molding material cannot flow between the seats and the wires to form deposits or accummulations in the seats which could subsequently interfere with the molding apparatus closing and operating in a proper manner.
  • molding material is introduced into the central mold cavity 16a-17a through the runner system 27 and the molding gate 28, to begin filling this cavity.
  • the molding material also begins to flow through the channels 160-170, and thus longitudinally between the wires 13, into the remaining mold cavities l6a-l7a in succession.
  • This flow of the molding material continues until all of the mold cavities l6a-l7a and channels 160-170 have been filled, thereby forming one of the block members 12 composed of the block portions 12a interconnected by the elliptically shaped ribs 120, with the ribs also being bonded to opposed sectors of the wires 13 in the channels.
  • the molding apparatus is opened and the molded block member 12 and thewires 13 are ejected from the molding dies 16 and 17 (and the molding dies 21 and 22) by the ejector pins 23, whereupon the wires are advanced another step for the next molding operation. Subsequently, the wires 13 are severed to form the wire spring relay combs ll, composed of one of the block members 12 molded about the wires 138, as shown in FIG. 6.
  • molding apparatus has been disclosed for the molding of the block members 12 about the wires 13, in which the wires are properly seated and captivated in the apparatus as it is closed for a molding operation, and in which subsequent shifting of the wires during the molding operation, so as to cause a wild wire condition in the resultant relay combs 11, as illustrated in FIGS. 7A and 7B, is substantially precluded.
  • the construction of the apparatus is such that deposits or accummulations of molding material in the arcuate wire gripping seats 16b and 17b, which could interfere with subsequent closing or proper operation of the apparatus, cannot occur.
  • the apparatus also is constructed so that complete filling of the mold cavities 16a-17a and the interconnecting channels and can be readily achieved, whereby the molded block members 12 are substantially free of voids.
  • the molded block members 12 are symmetrical about the parting line of the apparatus, any tendency for the creation of internal stresses within the block members, which could cause warping or stress cracking thereof during or subsequent to curing, is substantially reduced.
  • the resultant wire spring relay combs 11 are inherently of relatively strong construction, as a result of the reinforcing ribs 120 integrally connecting the block portions 12a, being bonded to the opposed sectors of the adjacent wires 13S, and being relatively large in cross section.
  • Apparatus for molding a plurality of block portions about a plurality of laterally spaced parallel inserts, wherein the block portions are longitudinally spaced along the inserts, and the inserts extend between and project beyond the block portions in spaced parallel relationship which comprises:
  • first and second molding dies movable relative to one another perpendicular to a parting line of said molding dies, between an open position and a closed molding position in which said molding dies define mold cavities spaced longitudinally relative to the inserts, for forming the block portions about the inserts;
  • rows of insert receiving means spaced longitudinally relative to the inserts for aligning the portions of the inserts which are to project beyond the block portions;
  • said first and second molding dies are substantially identical in construction, such that the molded block portions and the reinforcing ribs are symmetrical on either side of a plane containing the inserts.
  • the channels defined by said opposed surface portions of said first and second molding dies are enlarged relative to the inserts, so as to facilitate the flow of molding material through the channels and so as to form reinforcing ribs'of relatively strong construction.
  • Apparatus for molding a plurality of longitudinally spaced block portions about a plurality of laterally spaced parallel inserts which comprises:
  • first and second molding dies movable relative to one another between an open position and a closed molding position in which said molding dies define spaced mold cavities for forming tne block portions about the inserts, said molding dies being formed of a pressed and sintered metal powder composition containing iron on the order of 94.5 i- 4.0 percent, carbon on the order of 0.50 i 0.25 percent, nickel on the order of 2.0 i 1.0 percent, and substantially no copper, with any balance being one or more bonding metals up to a combined maximum of 2 percent;
  • opposed arcuate seats on said first and second molding dies between the mold cavities said arcuate seats being engageable with sectors of respectiveones of the inserts to captivate the inserts therebetween when the molding dies are moved to their closed molding position, so as to preclude shifting of the inserts and to preclude the flow of molding material between said seats and the sectors during a molding operation; and opposed surface portions on said molding dies between said arcuate seats, said surface portions defining channels through which molding material can flow between the mold cavities and into engagement with opposed sectors of the inserts, to form reinforcing ribs bonded to the opposed sectors of the inserts and integrally connecting the block portions which are formed about the inserts in the mold cavities.
  • Apparatus for molding a plurality of longitudinally spaced block portions about a plurality of laterally spaced parallel wires, in which the block portions are molded at preselected intervals along the wires and the wires are advanced in successive increments through the apparatus which comprises:
  • first and second molding dies movable relative to one another between an open position and a closed molding position in which said molding dies define spaced mold cavities for forming the block portions about the wires;
  • arcuate seats on said molding dies between the mold cavities said arcuate seats being engageable with sectors of respective ones of the wires to captivate the wires therebetween when the molding dies are moved to their closed molding position, so as to preclude shifting of the wires and to preclude the flow of molding material between said seats and the wires during a molding operation;
  • first and second sets of wire guides mounted adjacent the entrance and exit ends of said molding dies in fixed positions relative to one of said molding dies, said wire guides tapering both longitudinally and transversely of the wires to form transversely spaced, pointed wire locating extremities on the wire guides, and said wire guides tapering transversely of the wires and toward one another to define wire guide slots merging into arcuate wire receiving seats in alignment with said opposed arcuate seats on said molding dies, with the outermost wire guides of each set of wire guides projecting substantially beyond the wire guides therebetween and beyond the normal positions of the wires in the apparatus when the apparatus is in its open position.
  • said surface portions and said arcuate seats intersect in spaced relationship to the parting line of said molding dies, and said surface portions, intermediate said arcuate seats, are elliptically shaped and spaced from the parting line of said molding dies.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
US00212328A 1971-12-27 1971-12-27 Apparatus for molding longitudinally spaced block portions about laterally spaced parallel inserts Expired - Lifetime US3767155A (en)

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US21232871A 1971-12-27 1971-12-27

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US (1) US3767155A (enrdf_load_stackoverflow)
JP (1) JPS519779B2 (enrdf_load_stackoverflow)
BE (1) BE793243A (enrdf_load_stackoverflow)
CA (1) CA995423A (enrdf_load_stackoverflow)
DE (1) DE2263118B2 (enrdf_load_stackoverflow)
FR (1) FR2166037B1 (enrdf_load_stackoverflow)
GB (1) GB1411576A (enrdf_load_stackoverflow)
SE (1) SE388560B (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3970279A (en) * 1973-07-05 1976-07-20 Aislantes Leon, S.A. Mold assembly for producing multi-partitioned containers having metal connectors through the partitions
US4755340A (en) * 1984-12-20 1988-07-05 Heliotronic Forschungs- Und Entwicklungsgesellschaft Fur Solarzellen Gmbh Method for producing packs of blades used for cutting crystal bars into wafers
US20040150305A1 (en) * 2003-01-31 2004-08-05 Craig Bienick Encapsulated wire shelf
US20230167676A1 (en) * 2021-11-30 2023-06-01 Faurecia Interior Systems, Inc. Vehicle interior assembly with tambour door

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2802127A1 (de) * 1977-01-21 1978-07-27 American Chain & Cable Co Endabschlussbildung von biegsamen hohlfuehrungen aus schraubfoermigem draht
PT68763A (fr) * 1977-11-15 1978-12-01 Delahousse & Bruant Sa Procede de fabrication de produits pour l'habillage ou l'entoilage d'un chassis
IL57898A (en) * 1979-07-26 1983-05-15 Helioset Advanced Tech Method for injection-molding of elements onto extruded units
PL2800647T3 (pl) * 2012-01-05 2016-08-31 Bekaert Sa Nv Forma wtryskowa do piły ciernej drucianej, sposób produkcji piły ciernej drucianej i piła cierna druciana będąca wynikiem tego
CN104859099A (zh) * 2015-04-29 2015-08-26 芜湖顺成电子有限公司 一种防冲料的电线插头模具

Citations (11)

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US1815721A (en) * 1929-03-06 1931-07-21 Western Electric Co Method of and apparatus for manufacturing articles
US2727120A (en) * 1952-03-08 1955-12-13 Wiegand Co Edwin L Electric heaters
US2749393A (en) * 1951-05-01 1956-06-05 Pickering Associates Inc Molded sound reproducer and method of making the same
US3086251A (en) * 1960-09-30 1963-04-23 Plastic Wire & Cable Corp Method of molding electrical connector plugs
US3093432A (en) * 1960-10-27 1963-06-11 Honeywell Regulator Co Molded electrical cord connector
US3210453A (en) * 1961-10-20 1965-10-05 American Mach & Foundry Method for producing an electrical contact and terminal board
US3226463A (en) * 1961-04-10 1965-12-28 Joseph M Wallace Methods of making circuit components
US3307111A (en) * 1963-11-22 1967-02-28 Air Reduction Molded composition resistor with parallel leads
US3471900A (en) * 1967-05-24 1969-10-14 Trw Inc Mold for encapsulating electrical components
US3538602A (en) * 1968-01-15 1970-11-10 Stackpole Carbon Co Method for making stators for rotary electric switches
US3542328A (en) * 1969-02-19 1970-11-24 Western Electric Co Mold having v-shaped guides to prevent pinching a lead on a component during an encapsulation process

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US2924850A (en) * 1958-01-09 1960-02-16 Western Electric Co Die for molding blocks onto a plurality of laterally disposed wires

Patent Citations (11)

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Publication number Priority date Publication date Assignee Title
US1815721A (en) * 1929-03-06 1931-07-21 Western Electric Co Method of and apparatus for manufacturing articles
US2749393A (en) * 1951-05-01 1956-06-05 Pickering Associates Inc Molded sound reproducer and method of making the same
US2727120A (en) * 1952-03-08 1955-12-13 Wiegand Co Edwin L Electric heaters
US3086251A (en) * 1960-09-30 1963-04-23 Plastic Wire & Cable Corp Method of molding electrical connector plugs
US3093432A (en) * 1960-10-27 1963-06-11 Honeywell Regulator Co Molded electrical cord connector
US3226463A (en) * 1961-04-10 1965-12-28 Joseph M Wallace Methods of making circuit components
US3210453A (en) * 1961-10-20 1965-10-05 American Mach & Foundry Method for producing an electrical contact and terminal board
US3307111A (en) * 1963-11-22 1967-02-28 Air Reduction Molded composition resistor with parallel leads
US3471900A (en) * 1967-05-24 1969-10-14 Trw Inc Mold for encapsulating electrical components
US3538602A (en) * 1968-01-15 1970-11-10 Stackpole Carbon Co Method for making stators for rotary electric switches
US3542328A (en) * 1969-02-19 1970-11-24 Western Electric Co Mold having v-shaped guides to prevent pinching a lead on a component during an encapsulation process

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3970279A (en) * 1973-07-05 1976-07-20 Aislantes Leon, S.A. Mold assembly for producing multi-partitioned containers having metal connectors through the partitions
US4755340A (en) * 1984-12-20 1988-07-05 Heliotronic Forschungs- Und Entwicklungsgesellschaft Fur Solarzellen Gmbh Method for producing packs of blades used for cutting crystal bars into wafers
US20040150305A1 (en) * 2003-01-31 2004-08-05 Craig Bienick Encapsulated wire shelf
US7147293B2 (en) 2003-01-31 2006-12-12 Gemtron Corporation Encapsulated wire shelf
US20070063627A1 (en) * 2003-01-31 2007-03-22 Craig Bienick Encapsulated wire shelf
US7237856B2 (en) 2003-01-31 2007-07-03 Gemtron Corporation Encapsulated wire shelf
US20230167676A1 (en) * 2021-11-30 2023-06-01 Faurecia Interior Systems, Inc. Vehicle interior assembly with tambour door

Also Published As

Publication number Publication date
DE2263118A1 (de) 1973-07-12
GB1411576A (en) 1975-10-29
DE2263118B2 (de) 1976-02-26
FR2166037B1 (enrdf_load_stackoverflow) 1975-11-07
SE388560B (sv) 1976-10-11
FR2166037A1 (enrdf_load_stackoverflow) 1973-08-10
CA995423A (en) 1976-08-24
BE793243A (fr) 1973-04-16
JPS519779B2 (enrdf_load_stackoverflow) 1976-03-30
JPS4873455A (enrdf_load_stackoverflow) 1973-10-03

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