US3069751A - Manufacture of multiple contact devices - Google Patents

Manufacture of multiple contact devices Download PDF

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Publication number
US3069751A
US3069751A US765764A US76576458A US3069751A US 3069751 A US3069751 A US 3069751A US 765764 A US765764 A US 765764A US 76576458 A US76576458 A US 76576458A US 3069751 A US3069751 A US 3069751A
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Prior art keywords
contact members
strip
apertures
adhesive
placing
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Expired - Lifetime
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US765764A
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Deakin Stanley Thomas
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ASS ELECT IND WOOLWICH Ltd
ASSOCIATED ELECTRICAL INDUSTRIES (WOOLWICH) Ltd
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ASS ELECT IND WOOLWICH Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/20—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve
    • H01R43/205—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve with a panel or printed circuit board
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K13/00—Apparatus or processes specially adapted for manufacturing or adjusting assemblages of electric components
    • H05K13/04—Mounting of components, e.g. of leadless components
    • H05K13/0417—Feeding with belts or tapes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/42—Securing in a demountable manner
    • H01R13/428—Securing in a demountable manner by resilient locking means on the contact members; by locking means on resilient contact members
    • H01R13/432—Securing in a demountable manner by resilient locking means on the contact members; by locking means on resilient contact members by stamped-out resilient tongue snapping behind shoulder in base or case
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49204—Contact or terminal manufacturing
    • Y10T29/49208—Contact or terminal manufacturing by assembling plural parts
    • Y10T29/49217—Contact or terminal manufacturing by assembling plural parts by elastic joining
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49204—Contact or terminal manufacturing
    • Y10T29/49208—Contact or terminal manufacturing by assembling plural parts
    • Y10T29/4922—Contact or terminal manufacturing by assembling plural parts with molding of insulation
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49204—Contact or terminal manufacturing
    • Y10T29/49208—Contact or terminal manufacturing by assembling plural parts
    • Y10T29/49222—Contact or terminal manufacturing by assembling plural parts forming array of contacts or terminals

Definitions

  • This invention relates to the manufacture of multiple contact devices of the kind in which an array of contacts is embedded in recesses or apertures in an insulating base member in accordance with a predetermined pattern.
  • the invention has an important application in socket contacts for plug-in type components, such as thermionic valves and transistors, used in printed circuits.
  • Printed circuits are usually formed on an insulating panel and the socket contacts pressed into apertures cut in the panel and held there by the resilience of the contact.
  • Valve sockets for instance will be usually arranged around a pitch circle whilst sockets for other components will be arranged in appropriate patterns.
  • the object of the present invention is to provide an improved method of inserting contact members within an insulating body.
  • a method of inserting contact members within apertures arranged in a pattern in a body of insulating material comprises the steps of pressing said contact members in accordance with said pattern on a strip of material having an adhesive surface, placing said strip of material over said body so that said contact members are aligned with said apertures, placing each of said contact members into the corresponding aperture so that said contact members are retained within said apertures and removing said strip of material so as to leave said contact members within said apertures.
  • the contact members may be arranged in repetitive groups on the adhesive surface.
  • the contact members may be fed through a plurality of ducts on to the adhesive surface, the outlet ends of which ducts are arranged in the required pattern so that the contact members, as fed on to the adhesive surface, conform to the required pattern.
  • the strip of material may be fed continuously or in steps across the ends of the ducts.
  • FIG. 1 is an illustration of apparatus used for affixing contact members to a strip of material having an adhesive layer on one surface;
  • FIG. 2 is a perspective view of the strip with the contact members adhering to one surface in accordance with a required pattern
  • FIG. 3 is a side view, sectioned, of an apertured plate illustrating how the contact members are pressed into the apertures.
  • a strip of flexible material 1 which may be plastic, cloth, paper or any other suitable material, is wound off a drum 2.
  • the strip of material 1 has a layer of adhesive material 3 on its upper surface.
  • This adhesive material may be of any suitable type.
  • One type which has been found satisfactory in use is a mixture of pitch, wood ash and tallow in the ratio 511:1.
  • the tallow is mixed with the pitch and the wood ash is added subsequently. This mixture is placed in a layer on a strip of material 1. If the mixture is subsequently added it becomes tacky and adhesive.
  • the strip 1 is pressed under a guide roller 4 and over a roller 5 which may be heated so as to apply heat to the adhesive material if required. Heat may be supplied to the roller 5 by means of hot air or other fluid flowing through a duct 6 from a suitable source of heat.
  • the strip 1 then passes over a block 7 which has an upper surface 8.
  • a plurality of ducts 9 are located above the surface 8 and are supported in a holder 11.
  • the ducts 9 are arranged in accordance with the required pattern of contact members.
  • the contact members are fed one by one in succession down each of the ducts 9 and on to the upper surface of the adhesive layer 3 on the strip 1 and adhere thereto.
  • the strip 1 is subsequently pressed over the roller 12. As the strip 1 passes under the ducts 9 contact members drop down so as to adhere to the layer 3 in the required pattern and groups of contact members 14 are formed at successive positions on the strip 1 as the strip 1 moves across the ends of the ducts under the action of the rollers.
  • the contact members After the contact members have been aflixed to the layer 3 it may be necessary to store the strip 1 before the contact members are inserted within the apertures of a printed circuit. It will therefore be convenient to roll up the strip to store it. If the strip is rolled means must be provided to prevent the adhesive layer 3 from adhering to other protions of the strip and also to prevent damage to the contact members. For this surface, after the contact members have been placed in position, the adhesive layer may be coated with a layer of French chalk or other absorbent powdered material or a layer of paper may be placed over the portion of the adhesive layer not covered by the contact members.
  • a sheet of foam rubber or other compressible material may be placed on the adhesive layer so as to extend either in strips transverse to the strip 1 and between each successive groups of contact mmbers, or in strips encircling each group, or in one or more strips extending longitudinally along the strip 1 outside each group of contact members.
  • FIG. 2 which shows two longitudinally extending strips of foam rubber 15, 16 extending one on each side of the groups of contact members 14.
  • the strips 15, .16, transversely extending strips 17 may be placed between the groups of contact members.
  • the strips of compressible material 15, 16 may conveniently be applied to the strip 1 as shown in FIG. 1 by unwinding the strips of compressible material from a drum 18. Only one strip 15 is illustrated in the figure.
  • the strip, with the contact members 14, may be rolled up and stored until required for use, the thickness of the compressible material preventing damage to the contact members and also preventing the adhesive layer from sticking to portions of the strip.
  • FIG. 3 illustrates how the contact members are in serted in apertures in a printed circuit board, or other board of insulating material having apertures of a certain pattern.
  • the board 21 is shown in section through the apertures 22.
  • the contact members are so shaped with lips 24 and flanges 25 that they are retained within the apertures 22 by the action of the lips and the flanges engaging respectively with opposite surfaces of the plate 21.
  • the strip of foam rubber is compressed as the contact members are pressed in the apertures and prevents the adhesive layer 3 from. adhering to the upper surface of the plate 21.
  • the use of French chalk or paper as described above will also prevent the adhesive layer 3 from adhering to the plate 21.
  • the strip 1 When the contact members are retained in position within the aperture 22 the strip 1 is removed from the upper surfaces of the flanges 24 leaving the contact members in position Within the apertures.
  • the strip 1 is first laid over the surface of the plate 21 so that the contact members may be pressed into each group of apertures.
  • the method of inserting the contact members is quick and accurate and greatly decreases the time taken to construct a printed circuit.
  • the plate 21 may be the body of a valve holder or other insulated body into apertures in which contact members are to be inserted.
  • the strip 1 may, of course, be cut into pieces after the contacts have been pressed on the adhesive layer.
  • a pressure sensitive adhesive sheet material for example that sold under the name Sellotape, a registered trademark, may be used for the strip 1 and this is of such a type that it is easily removed from the contact members when the contact members have been placed in position Within the apertures.
  • the adhesive layer 3 may not be applied to the whole of the surface of the strip 1 but may only extend over the portions of the surface to which the contact members are required to adhere.
  • the material of the adhesive layer is applied by any suitable method well known in the art.
  • the strip 1 may be moved continuously or in strips across the ends of the ducts 9.
  • the contact members may be fed on to the strip 1 from below if required and in this case the adhesive layer will have to be coated on to the lower surface of the strip 1.
  • the invention may be employed for inserting contacts of the type described in co-pending patent application Serial No. 749,673 in an insulating panel for a printed circuit.
  • the process of manufacturing multiple electrical contact devices comprising the steps of placing in accordance with a required pattern on an adhesive surface of a strip of material a plurality of contact members of the type adapted to be self-retaining in suitably shaped apertures, placing non-adhesive compressible material having a thickness greater than the height of said contact members onto said adhesive surface adjacent to said contact members, placing said strip of material over an insulating body formed with apertures arranged in accordance with the required pattern so that said compressible material is compressed and said contact members are inserted into respective apertures and retain themselves therein and finally removing said strip of material together with said compressible material from said contact members so as to leave said contact members within said apertures.
  • the process of manufacturing mulitple electrical contact devices comprising the steps of placing in accordance with a required pattern on an adhesive surface of a strip of material a plurality of contact members of the type adapted to be self-retaining in suitably shaped apertures, placing non-adhesive compressible material having a thickness greater than the height of said contact members on said adhesive surface so that said compressible material extends longitudinally along said strip adjacent to said contact members, placing said strip of material over an insulating body formed with apertures arranged in accordance with the required pattern so that said compressible material is compressed and said contact members are inserted into respective apertures and retain themselves therein and finally removing said strip of material together with said compressible material from said contact members so as to leave said contact members within said apertures.

Description

Dec. 25, 1962 s. T. DEAKIN 3,069,751
MANUFACTURE OF MULTIPLE CONTACT DEVICES Filed Oct. '7, 1958 Inventor:
STANLEY THOMAS DEAKIN Attorneys United States Patent Ofilice 3,069,751 Patented Dec. 25, 1962 3,069,751 MANUFACTURE OF MULTIPLE CONTACT DEVICES Stanley Thomas Deakin, Ewell West, England, assignor to Associated Electrical Industries (Woolwich) Limited, a British company Filed Oct. 7, 1958, Ser. No. 765,764 Claims priority, application Great Britain Oct. 10, 1957 4 Claims. (Cl. 29155.5)
This invention relates to the manufacture of multiple contact devices of the kind in which an array of contacts is embedded in recesses or apertures in an insulating base member in accordance with a predetermined pattern.
The invention has an important application in socket contacts for plug-in type components, such as thermionic valves and transistors, used in printed circuits.
Printed circuits are usually formed on an insulating panel and the socket contacts pressed into apertures cut in the panel and held there by the resilience of the contact. Valve sockets for instance will be usually arranged around a pitch circle whilst sockets for other components will be arranged in appropriate patterns.
Normally in apparatus such, for instance, as a radioreceiver employing printed circuitry, there will be a number of components and hence the fitting of the socket contacts into the aperture on the insulating board can be a lengthy and laborious operation adding appreciably to the cost of production.
The object of the present invention is to provide an improved method of inserting contact members within an insulating body.
According to the present invention a method of inserting contact members within apertures arranged in a pattern in a body of insulating material comprises the steps of pressing said contact members in accordance with said pattern on a strip of material having an adhesive surface, placing said strip of material over said body so that said contact members are aligned with said apertures, placing each of said contact members into the corresponding aperture so that said contact members are retained within said apertures and removing said strip of material so as to leave said contact members within said apertures.
The contact members may be arranged in repetitive groups on the adhesive surface.
The contact members may be fed through a plurality of ducts on to the adhesive surface, the outlet ends of which ducts are arranged in the required pattern so that the contact members, as fed on to the adhesive surface, conform to the required pattern. The strip of material may be fed continuously or in steps across the ends of the ducts.
In order that the invention may be more readily understood reference will now be made to the accompanying drawing in which:
FIG. 1 is an illustration of apparatus used for affixing contact members to a strip of material having an adhesive layer on one surface;
FIG. 2 is a perspective view of the strip with the contact members adhering to one surface in accordance with a required pattern, and
FIG. 3 is a side view, sectioned, of an apertured plate illustrating how the contact members are pressed into the apertures.
With reference to FIG. 1 a strip of flexible material 1, which may be plastic, cloth, paper or any other suitable material, is wound off a drum 2. The strip of material 1 has a layer of adhesive material 3 on its upper surface. This adhesive material may be of any suitable type. One type which has been found satisfactory in use is a mixture of pitch, wood ash and tallow in the ratio 511:1.
The tallow is mixed with the pitch and the wood ash is added subsequently. This mixture is placed in a layer on a strip of material 1. If the mixture is subsequently added it becomes tacky and adhesive.
The strip 1 is pressed under a guide roller 4 and over a roller 5 which may be heated so as to apply heat to the adhesive material if required. Heat may be supplied to the roller 5 by means of hot air or other fluid flowing through a duct 6 from a suitable source of heat. The strip 1 then passes over a block 7 which has an upper surface 8. A plurality of ducts 9 are located above the surface 8 and are supported in a holder 11. The ducts 9 are arranged in accordance with the required pattern of contact members. The contact members are fed one by one in succession down each of the ducts 9 and on to the upper surface of the adhesive layer 3 on the strip 1 and adhere thereto. The strip 1 is subsequently pressed over the roller 12. As the strip 1 passes under the ducts 9 contact members drop down so as to adhere to the layer 3 in the required pattern and groups of contact members 14 are formed at successive positions on the strip 1 as the strip 1 moves across the ends of the ducts under the action of the rollers.
After the contact members have been aflixed to the layer 3 it may be necessary to store the strip 1 before the contact members are inserted within the apertures of a printed circuit. It will therefore be convenient to roll up the strip to store it. If the strip is rolled means must be provided to prevent the adhesive layer 3 from adhering to other protions of the strip and also to prevent damage to the contact members. For this surface, after the contact members have been placed in position, the adhesive layer may be coated with a layer of French chalk or other absorbent powdered material or a layer of paper may be placed over the portion of the adhesive layer not covered by the contact members. Alternatively a sheet of foam rubber or other compressible material may be placed on the adhesive layer so as to extend either in strips transverse to the strip 1 and between each successive groups of contact mmbers, or in strips encircling each group, or in one or more strips extending longitudinally along the strip 1 outside each group of contact members. This is illustrated in FIG. 2 which shows two longitudinally extending strips of foam rubber 15, 16 extending one on each side of the groups of contact members 14. As an alternative, or in addition to, the strips 15, .16, transversely extending strips 17 may be placed between the groups of contact members. The strips of compressible material 15, 16 may conveniently be applied to the strip 1 as shown in FIG. 1 by unwinding the strips of compressible material from a drum 18. Only one strip 15 is illustrated in the figure.
When the strips of rubber or other compressible material, or other protective devices as described above are in position on the strip 1, the strip, with the contact members 14, may be rolled up and stored until required for use, the thickness of the compressible material preventing damage to the contact members and also preventing the adhesive layer from sticking to portions of the strip.
FIG. 3 illustrates how the contact members are in serted in apertures in a printed circuit board, or other board of insulating material having apertures of a certain pattern. The board 21 is shown in section through the apertures 22. The contact members 14, which are shown as sockets but may, of course, be any suitable type of pin, socket or connector, adhere to the surface of the layer 3 and are placed over the corresponding apertures 22 of each group and are then pressed into the apertures by the action of an operators thumb 23 or by other suitable means. The contact members are so shaped with lips 24 and flanges 25 that they are retained within the apertures 22 by the action of the lips and the flanges engaging respectively with opposite surfaces of the plate 21. The strip of foam rubber is compressed as the contact members are pressed in the apertures and prevents the adhesive layer 3 from. adhering to the upper surface of the plate 21. The use of French chalk or paper as described above will also prevent the adhesive layer 3 from adhering to the plate 21.
When the contact members are retained in position within the aperture 22 the strip 1 is removed from the upper surfaces of the flanges 24 leaving the contact members in position Within the apertures. The strip 1 is first laid over the surface of the plate 21 so that the contact members may be pressed into each group of apertures. The method of inserting the contact members is quick and accurate and greatly decreases the time taken to construct a printed circuit. The plate 21 may be the body of a valve holder or other insulated body into apertures in which contact members are to be inserted. The strip 1 may, of course, be cut into pieces after the contacts have been pressed on the adhesive layer.
A pressure sensitive adhesive sheet material, for example that sold under the name Sellotape, a registered trademark, may be used for the strip 1 and this is of such a type that it is easily removed from the contact members when the contact members have been placed in position Within the apertures. The adhesive layer 3 may not be applied to the whole of the surface of the strip 1 but may only extend over the portions of the surface to which the contact members are required to adhere. The material of the adhesive layer is applied by any suitable method well known in the art.
The strip 1 may be moved continuously or in strips across the ends of the ducts 9. The contact members may be fed on to the strip 1 from below if required and in this case the adhesive layer will have to be coated on to the lower surface of the strip 1.
The invention may be employed for inserting contacts of the type described in co-pending patent application Serial No. 749,673 in an insulating panel for a printed circuit.
What I claim is:
1. The process of manufacturing multiple electrical contact devices comprising the steps of placing in accordance with a required pattern on an adhesive surface of a strip of material a plurality of contact members of the type adapted to be self-retaining in suitably shaped apertures, placing non-adhesive compressible material having a thickness greater than the height of said contact members onto said adhesive surface adjacent to said contact members, placing said strip of material over an insulating body formed with apertures arranged in accordance with the required pattern so that said compressible material is compressed and said contact members are inserted into respective apertures and retain themselves therein and finally removing said strip of material together with said compressible material from said contact members so as to leave said contact members within said apertures.
2. The process of manufacturing multiple electrical contact devices comprising the steps of placing in accordance with a required pattern on an adhesive surface of a strip of material a plurality of contact members of the type adapted to be self-retaining in suitably shaped apertures, placing non-adhesive compressible material having a thickness greater than the height of said contact members onto said adhesive surface between at least some of said contact members, placing said strip of material over an insulating body formed with apertures arranged in accordance with the required pattern so that said compressible material is compressed and said contact members are inserted into respective apertures and retain themselves therein and finally removing said strip of material together with said compressible material from said contact members so as to leave said contact members within said apertures.
3. The process of manufacturing mulitple electrical contact devices comprising the steps of placing in accordance with a required pattern on an adhesive surface of a strip of material a plurality of contact members of the type adapted to be self-retaining in suitably shaped apertures, placing non-adhesive compressible material having a thickness greater than the height of said contact members on said adhesive surface so that said compressible material extends longitudinally along said strip adjacent to said contact members, placing said strip of material over an insulating body formed with apertures arranged in accordance with the required pattern so that said compressible material is compressed and said contact members are inserted into respective apertures and retain themselves therein and finally removing said strip of material together with said compressible material from said contact members so as to leave said contact members within said apertures.
4. The process of manufacturing multiple electrical contact devices comprising the steps of placing in accordance with a required pattern on an adhesive surface of a strip of material a plurality of contacts members of the type adapted to be self-retaining in suitable shaped apertures, placing non-adhesive compressible material having a thickness greater than the height of said contact members onto said adhesive surface adjacent to said contact members, rolling up said strip so that the free surface of said compressible material abuts against a non-adhesive surface on said strip and protects said contact members, unrolling said strip, placing said strip of material over an insulating body formed with apertures arranged in accordance with the required pattern so that said compressible material is compressed and said contact members are inserted into respective apertures and retain themselves therein and finally removing said strip of material together with said compressible material from said contact members so as to leave said contact members Within said apertures.
References Cited in the file of this patent UNITED STATES PATENTS 2,251,326 Cullin Aug. 5, 1941 2,281,478 Chirelstein Apr. 28, 1942 2,676,765 Kaplan Apr. 27, 1954 2,768,429 Willis Oct. 30, 1956
US765764A 1957-10-10 1958-10-07 Manufacture of multiple contact devices Expired - Lifetime US3069751A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3136041A (en) * 1955-07-05 1964-06-09 United Carr Fastener Corp Socket feeding apparatus
US3335852A (en) * 1962-12-20 1967-08-15 Nippon Electric Co Mounting assembly supporting semiconductor devices
US3407925A (en) * 1965-03-19 1968-10-29 Elco Corp Microelectronic carrier
US3858721A (en) * 1971-10-01 1975-01-07 Western Electric Co Loading of compliant tape
US4568416A (en) * 1984-06-06 1986-02-04 Tokujiro Okui Taping package method for small-size electronic parts

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US221478A (en) * 1879-11-11 Improvement in sieves
US2251326A (en) * 1937-09-07 1941-08-05 Lou Mervis Method of making commutators
US2676765A (en) * 1950-01-21 1954-04-27 Kaplan Irving Pressure sensitive adhesive tape and core
US2768429A (en) * 1955-04-19 1956-10-30 Grant N Willis Method and apparatus for attaching lugs to panels

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US221478A (en) * 1879-11-11 Improvement in sieves
US2251326A (en) * 1937-09-07 1941-08-05 Lou Mervis Method of making commutators
US2676765A (en) * 1950-01-21 1954-04-27 Kaplan Irving Pressure sensitive adhesive tape and core
US2768429A (en) * 1955-04-19 1956-10-30 Grant N Willis Method and apparatus for attaching lugs to panels

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3136041A (en) * 1955-07-05 1964-06-09 United Carr Fastener Corp Socket feeding apparatus
US3335852A (en) * 1962-12-20 1967-08-15 Nippon Electric Co Mounting assembly supporting semiconductor devices
US3407925A (en) * 1965-03-19 1968-10-29 Elco Corp Microelectronic carrier
US3858721A (en) * 1971-10-01 1975-01-07 Western Electric Co Loading of compliant tape
US4568416A (en) * 1984-06-06 1986-02-04 Tokujiro Okui Taping package method for small-size electronic parts

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