US3654381A - Woven flat conductor - Google Patents
Woven flat conductor Download PDFInfo
- Publication number
- US3654381A US3654381A US50227A US3654381DA US3654381A US 3654381 A US3654381 A US 3654381A US 50227 A US50227 A US 50227A US 3654381D A US3654381D A US 3654381DA US 3654381 A US3654381 A US 3654381A
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- US
- United States
- Prior art keywords
- warp
- woven
- conductors
- cable
- weft
- 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
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/08—Flat or ribbon cables
- H01B7/083—Parallel wires, incorporated in a fabric
Definitions
- first threads known as warp threads are individually fed through eyelets or heddles mounted on one of several movable frames or harnesses. All warp threads are kept under tension during the weaving process.
- Each harness can separate the warp threads threaded through heddles on that harness from the remaining warp threads by being displaced from the other harness transversely to the warp threads.
- the separated warp threads constitute a shed.
- a weft thread is carried through the shed between the separated warp threads. Then the harnesses move and change the shed to weave the weft thread into the warp.
- Weft threads are carried through the shed differently on different looms.
- apparatus throws a shuttle through the shed to position a single weft thread between the separated warp threads each time the harnesses change the shed.
- the shuttle traverses the warp in alternate directions after each shed is made.
- a needle loom has a carrier.
- Each carrier operation disposes a double weft strand in the shed. This carrier sequence follows each shed change.
- the warp comprises parallel textile threads and conductors. Only the textile threads are actively involved in the weaving process. The conductors are only passively involved; that is, they are surrounded by the weaving process, but are not a part of it.
- Another object of my invention is to provide a fiat woven cable which simplifies connection procedures.
- the carrier passes through the SUMMARY Flat cables woven in accordance with my invention comprise warp and weft as in prior cables. Unlike the prior cables, however, the warp consists of conductors only. There are no separate textile warp threads. The weft threads are woven directly into the conductors to form the final woven cable.
- FIG. 1 schematically illustrates a shuttle loom for weaving cables in accordance with this invention
- FIG. 2 shows a cable woven on a shuttle loom
- FIG. 3 schematically illustrates a needle loom for weaving cables in accordance with this invention
- FIG. 4 shows a cable woven on a needle loom.
- a shuttle loom 10 in FIG. 1 includes a unit for maintaining constant warp tension and for weaving flat cable in accordance with my invention.
- the shuttle loom 10 is conventional except as modified by the addition of a warp feeding unit 12.
- the warp conductors from a supply unit 13 pass through the warp feeding unit 12, a harness 14 including representative heddles 16 and 18 and a harness 20 including representative heddles 22 and 24. After passing through selected heddles, the conductors pass through a reed 26 and across a breastbeam 28 to a cloth beam 30.
- Four representative conductors 32, 34, 36 and 38 pass through the heddles 16, 22, 18 and 24, respectively.
- the warp feeding unit 12 in FIG. 1 maintains each conductor under substantially constant tension.
- the conductors may be fed through pinch rollers.
- weights may be suspended from warp conductors to compensate for changing harness positions.
- the warp threads for each harness may be wrapped on a separate counterweighted supply unit such as the unit 13. Any of these or other approaches cause the entire warp conductor to extend as the tension tends to increase to thereby keep the warp conductor tension substantially constant during the weaving process.
- the conductors are woven into the cable when apparatus (not shown) alternately elevates the harnesses 14 and 20 to form sheds and weft threads are passed through the shed to traverse the warp.
- apparatus raises the harness 14
- the heddles l6 and 18 raise the warp conductors 32 and 36 to form a shed with the remaining conductors 34 and 38.
- other apparatus propels a shuttle 42 through the shed to a receiving member (not shown).
- the shuttle deposits a weft thread 44.
- the harness 14 drops to its original position and the harness 20 rises, and then other apparatus moves the reed 26 to beat the weft thread 44 against the previously woven cable portion.
- FIG. 2 shows a section of flat electrical cable woven with a twill weave.
- a twill weave produces an overall surface pattern of diagonal lines, usually all running to the left or right and made by floating weft threads 46 over groups of two or more warp threads 48 and staggering the floats.
- the warp consists only of the conductors 48; so the warping and connection procedures are simplified and the attendant expenses reduced. As no textile threads are in the warp, the conductor insulation can be removed automatically. Further, if the conductors must be separated, it is merely necessary to remove a portion of the weft thread 46 from the cable.
- FIG. 3 schematically shows a needle loom in which a warp feeding unit 76, which is similar to the warp feeding unit shown in FIG. 1, carries four representative warp conductors 80, 82, 84 and 86. These warp conductors enter the warp feed unit 76 from a supply unit (not shown). Of the four representative conductors, conductors 80 and 84 pass through heddles 87 and 88 mounted on a harness 89. Conductors 82 and 86 pass through heddles 94 and 96 on harness 98. All the conductors pass through a reed 100, and weft threads are woven into the warp between the reed 100 and a breastbeam 101. During the weaving process, the warp feeding unit 76 maintains the warp conductors under constant tension.
- apparatus moves a carrier 102 through the shed from a first selvage 103.
- a typical carrier 102 includes hook portion 104, and a weft thread 108 from a spool (not shown) passes through an aperture 106 in the hook portion 104.
- the weft thread 108 forms a loop 112 around a latch needle 114 at a second selvage.
- the latch needle 114 includes a hook 116 and a latch 118 and moves parallel to the selvage 115.
- the loop 112 wraps around the needle between the hook 116 and latch 118 so the latch needle 114 holds the weft thread in position at the selvage 115.
- additional weft thread is deposited in the shed so two weft threads are woven into the warp when the harnesses form another shed.
- the latch needle 114 Before the next double weft strand is pulled through the shed, the latch needle 114 extends and the loop 112 slides away from the hook 116 and opens the latch 118. Then another loop 120, shown in phantom, is formed around the latch needle 114. When the latch needle 114 retracts, it closes the latch 118 and pulls the loop 120 through the loop 112. Then the latch 118 opens as the latch needle 114 is extended to engage the next loop formed in the weft. This sequence of operations produces a regular knitted edge which is easily unravelled from one end only.
- FIG. 4 illustrates a preferred weft termination for a cable woven on a needle loom.
- This weft termination simplifies steps for connecting the cable to a device.
- a latch needle 122 disposed parallel to a selvage 123 with an initially opened latch 124 and a hook 126, passes through a previously formed weft loop 128 and a loop 130 formed by a cord 132.
- a weft carrier 134 passes through the shed to a position shown in phantom and denoted by the reference numeral 134' and then retracts looping a weft thread 136 around the hook 126.
- the latch needle 122 retracts so the loops 128 and 130 engage and close the latch 124. As the latch needle 122 continues to retract, it pulls both the weft thread 136 and the cord 132 through the weft loops 128 and 130. These operations repeat and knit the cord 132 into the loops.
- the single warp conductors in a cable may actually comprise two or more diverse conductors.
- a twisted pair of conductors constitute one warp conductor 140;
- a shielded conductor 142 is another warp conductor; and
- single wire conductors 142 and 146 of different sizes constitute other warp conductors.
- optical and electrical conductors or hydraulic tubing can all be combined in a single cable.
- the insulation on the individual conductors shown in FIG. 4 provides the primary spacing control.
- the weft threads may vary the spacing to a certain degree by varying the weft thread weight or by changing the weaves. Normally, the weft or weave are constant for a given cable. Therefore, the relative lateral positions for each conductor remain substantially fixed to facilitate conductor identification.
- grommets or eyelets can be woven into the cable during manufacture. Once they are woven into the cable, the grommets or eyelets can be placed on hooks or pins during installation or otherwise be affixed to supports in the final installation.
- the weft termination provides identification for cables woven on needle looms.
- a uniquely color coded selvage can identify all the conductors. Additional color codes may also be used.
- color coding may be confusing when a cable comprises a large number of conductors. This confusion can be overcome by printing numbers or symbols directly onto the conductor insulation.
- a printing head stamps the identification on an individual conductor before the cable is formed. During the weaving operation, however, the conductors may twist and obscure the identification in the cable.
- My cables can be printed after the cable is woven because the improved conductor spacing obtained with these cables substantially eliminates printing registration problems present in prior cables. An example is shown in FIG. 4 where alternate conductors are printed by transferring a woven cable past a printer. These symbols are always visible because the individual conductors do not twist after they are woven.
- a woven cable comprising:
- each warp section consisting of warp conductors
- said weft thread having a transverse dimension significantly less than a like dimension of a warp conductor.
- a woven cable as recited in claim 1 including first and second selvages, said weft thread being woven into said warp at said first selvage, and forming weft loops at said second selvage, said cable additionally comprising means for interlocking adjacent of said weft loops.
- a woven cable as recited in claim 1 including first and second selvages, the weft thread being woven into said warp at said first selvage and forming interlocked weft loops at said second selvage.
- a woven cable comprising:
- each warp section consisting of warp conductors
- a resilient weft thread woven into said warp sections said weft thread having a transverse dimension significantly less than the like dimensions of a warp conductor, said woven cable having first and second selvages and said weft thread being woven into said warp at said first selvage and forming interlocked weft loops at said second selvage.
- a woven cable as recited in claim 6 additionally including separate means for interlocking adjacent of said weft loops at said second selvages.
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- Woven Fabrics (AREA)
Abstract
Description
Claims (7)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US5022770A | 1970-06-26 | 1970-06-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3654381A true US3654381A (en) | 1972-04-04 |
Family
ID=21964063
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US50227A Expired - Lifetime US3654381A (en) | 1970-06-26 | 1970-06-26 | Woven flat conductor |
Country Status (1)
Country | Link |
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US (1) | US3654381A (en) |
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4095042A (en) * | 1976-09-07 | 1978-06-13 | Southern Weaving Company | Woven shielded cable |
US4134192A (en) * | 1976-10-12 | 1979-01-16 | Gould Inc. | Composite battery plate grid |
WO1993020563A1 (en) * | 1992-04-03 | 1993-10-14 | W.L. Gore & Associates (Uk) Ltd. | Flat cable |
US5373103A (en) * | 1993-08-09 | 1994-12-13 | Woven Electronics Corp. | Ribbon electrical transmission cable with woven shielding |
DE19504600A1 (en) * | 1995-02-11 | 1996-08-14 | Mike Dipl Ing Jaehrig | Woven pipe network |
US5675299A (en) * | 1996-03-25 | 1997-10-07 | Ast Research, Inc. | Bidirectional non-solid impedance controlled reference plane requiring no conductor to grid alignment |
US5682124A (en) * | 1993-02-02 | 1997-10-28 | Ast Research, Inc. | Technique for increasing the range of impedances for circuit board transmission lines |
US20030044155A1 (en) * | 2001-08-31 | 2003-03-06 | Maiden Janice R. | Optical fiber carrier |
US20030134525A1 (en) * | 2002-01-15 | 2003-07-17 | Matthew Sweetland | Woven multiple-contact connector |
US20040005793A1 (en) * | 2002-01-15 | 2004-01-08 | Tribotek, Inc. | Multiple-contact woven power connectors |
US20040009693A1 (en) * | 2002-01-15 | 2004-01-15 | Tribotek, Inc. | Multiple-contact cable connector assemblies |
US20040048500A1 (en) * | 2002-01-15 | 2004-03-11 | Tribotek, Inc. | Woven multiple-contact connectors |
US20040214454A1 (en) * | 2002-01-15 | 2004-10-28 | Tribotek, Inc. | Method and apparatus for manufacturing woven connectors |
US20050014421A1 (en) * | 2003-07-14 | 2005-01-20 | Tribotek, Inc. | System and methods for connecting electrical components |
US20050045461A1 (en) * | 2003-07-11 | 2005-03-03 | Tribotek, Inc. | Multiple-contact woven electrical switches |
US20050159028A1 (en) * | 2002-01-15 | 2005-07-21 | Tribotek, Inc. | Contact woven connectors |
US20050202695A1 (en) * | 2002-01-15 | 2005-09-15 | Tribotek, Inc. | Electrical connector |
US20060211295A1 (en) * | 2005-03-15 | 2006-09-21 | Tribotek, Inc. | Electrical connector having one or more electrical contact points |
US20070015419A1 (en) * | 2005-07-18 | 2007-01-18 | Tribotek, Inc. | Electrical connector |
CN102262933A (en) * | 2010-05-31 | 2011-11-30 | 日立电线精密技术株式会社 | Flat cable and method for fabricating the same |
US8646397B2 (en) | 2010-12-17 | 2014-02-11 | Midcon Cables Co., Inc. | Method and apparatus for producing machine stitched flat wiring harness |
US20140054085A1 (en) * | 2011-04-24 | 2014-02-27 | Tyco Electronics Nederland Bv | Cable Assembly Comprising A Flexible Support Made From A Textile Material |
US10132013B2 (en) | 2015-05-12 | 2018-11-20 | Taiwan Textile Research Institute | Conductive textile |
WO2021119224A1 (en) * | 2019-12-12 | 2021-06-17 | WEAV3D, Inc. | Interlaced composites integrated with transmission material and method for fabricating the same |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3197554A (en) * | 1961-09-01 | 1965-07-27 | Gene W Baker | Multi-wire electrical system with identifying means |
US3257500A (en) * | 1964-06-03 | 1966-06-21 | Jr Adolphe Rusch | Flat electrically conductive flexible cable |
US3495025A (en) * | 1967-12-07 | 1970-02-10 | Southern Weaving Co | Woven electrical cable structure and method |
-
1970
- 1970-06-26 US US50227A patent/US3654381A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3197554A (en) * | 1961-09-01 | 1965-07-27 | Gene W Baker | Multi-wire electrical system with identifying means |
US3257500A (en) * | 1964-06-03 | 1966-06-21 | Jr Adolphe Rusch | Flat electrically conductive flexible cable |
US3495025A (en) * | 1967-12-07 | 1970-02-10 | Southern Weaving Co | Woven electrical cable structure and method |
Non-Patent Citations (1)
Title |
---|
FRC FAB RI CABLE/COMPUTER Woven Ribbon Cable, The Zippertubing Co. * |
Cited By (50)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4095042A (en) * | 1976-09-07 | 1978-06-13 | Southern Weaving Company | Woven shielded cable |
US4134192A (en) * | 1976-10-12 | 1979-01-16 | Gould Inc. | Composite battery plate grid |
WO1993020563A1 (en) * | 1992-04-03 | 1993-10-14 | W.L. Gore & Associates (Uk) Ltd. | Flat cable |
US5635677A (en) * | 1992-04-03 | 1997-06-03 | W. L. Gore & Associates, Inc. | Series of parallel electrical conductors held together by interwoven braiding |
US5682124A (en) * | 1993-02-02 | 1997-10-28 | Ast Research, Inc. | Technique for increasing the range of impedances for circuit board transmission lines |
US5373103A (en) * | 1993-08-09 | 1994-12-13 | Woven Electronics Corp. | Ribbon electrical transmission cable with woven shielding |
DE19504600A1 (en) * | 1995-02-11 | 1996-08-14 | Mike Dipl Ing Jaehrig | Woven pipe network |
US5675299A (en) * | 1996-03-25 | 1997-10-07 | Ast Research, Inc. | Bidirectional non-solid impedance controlled reference plane requiring no conductor to grid alignment |
US20030044155A1 (en) * | 2001-08-31 | 2003-03-06 | Maiden Janice R. | Optical fiber carrier |
US7021957B2 (en) | 2002-01-15 | 2006-04-04 | Tribotek, Inc. | Woven multiple-contact connector |
US7083427B2 (en) | 2002-01-15 | 2006-08-01 | Tribotek, Inc. | Woven multiple-contact connectors |
US20040009693A1 (en) * | 2002-01-15 | 2004-01-15 | Tribotek, Inc. | Multiple-contact cable connector assemblies |
US20040048500A1 (en) * | 2002-01-15 | 2004-03-11 | Tribotek, Inc. | Woven multiple-contact connectors |
US20040171284A1 (en) * | 2002-01-15 | 2004-09-02 | Tribotek, Inc. | Woven multiple-contact connector |
US20040214454A1 (en) * | 2002-01-15 | 2004-10-28 | Tribotek, Inc. | Method and apparatus for manufacturing woven connectors |
US7223111B2 (en) | 2002-01-15 | 2007-05-29 | Tribotek, Inc. | Electrical connector |
US7101194B2 (en) | 2002-01-15 | 2006-09-05 | Tribotek, Inc. | Woven multiple-contact connector |
US20050130486A1 (en) * | 2002-01-15 | 2005-06-16 | Tribotek, Inc. | Woven multiple-contact connector |
US20050159028A1 (en) * | 2002-01-15 | 2005-07-21 | Tribotek, Inc. | Contact woven connectors |
US6942496B2 (en) | 2002-01-15 | 2005-09-13 | Tribotek, Inc. | Woven multiple-contact connector |
US20050202695A1 (en) * | 2002-01-15 | 2005-09-15 | Tribotek, Inc. | Electrical connector |
US6945790B2 (en) | 2002-01-15 | 2005-09-20 | Tribotek, Inc. | Multiple-contact cable connector assemblies |
US6951465B2 (en) | 2002-01-15 | 2005-10-04 | Tribotek, Inc. | Multiple-contact woven power connectors |
US20040005793A1 (en) * | 2002-01-15 | 2004-01-08 | Tribotek, Inc. | Multiple-contact woven power connectors |
US20060063413A1 (en) * | 2002-01-15 | 2006-03-23 | Tribotek, Inc. | Electrical connector |
US20030134525A1 (en) * | 2002-01-15 | 2003-07-17 | Matthew Sweetland | Woven multiple-contact connector |
US7056139B2 (en) | 2002-01-15 | 2006-06-06 | Tribotek, Inc. | Electrical connector |
US20060134943A1 (en) * | 2002-01-15 | 2006-06-22 | Tribotek, Inc. | Contact woven connectors |
US7077662B2 (en) | 2002-01-15 | 2006-07-18 | Tribotek, Inc. | Contact woven connectors |
US7094064B2 (en) | 2003-07-11 | 2006-08-22 | Tribotek, Inc. | Multiple-contact woven electrical switches |
US20050045461A1 (en) * | 2003-07-11 | 2005-03-03 | Tribotek, Inc. | Multiple-contact woven electrical switches |
US20050014421A1 (en) * | 2003-07-14 | 2005-01-20 | Tribotek, Inc. | System and methods for connecting electrical components |
US7097495B2 (en) | 2003-07-14 | 2006-08-29 | Tribotek, Inc. | System and methods for connecting electrical components |
US7125281B2 (en) | 2003-07-14 | 2006-10-24 | Tribotek, Inc. | Systems and methods for connecting electrical components |
US20050239329A1 (en) * | 2003-07-14 | 2005-10-27 | Tribotek, Inc. | Systems and methods for connecting electrical components |
US20060211295A1 (en) * | 2005-03-15 | 2006-09-21 | Tribotek, Inc. | Electrical connector having one or more electrical contact points |
US7140916B2 (en) | 2005-03-15 | 2006-11-28 | Tribotek, Inc. | Electrical connector having one or more electrical contact points |
US7458827B2 (en) | 2005-07-18 | 2008-12-02 | Methode Electronics, Inc. | Electrical connector |
US7214106B2 (en) | 2005-07-18 | 2007-05-08 | Tribotek, Inc. | Electrical connector |
US20070015387A1 (en) * | 2005-07-18 | 2007-01-18 | Tribotek, Inc. | Electrical connector |
US20070015419A1 (en) * | 2005-07-18 | 2007-01-18 | Tribotek, Inc. | Electrical connector |
CN102262933A (en) * | 2010-05-31 | 2011-11-30 | 日立电线精密技术株式会社 | Flat cable and method for fabricating the same |
US20110290526A1 (en) * | 2010-05-31 | 2011-12-01 | Hitachi Cable Fine-Tech, Ltd. | Flat cable and method for fabricating the same |
US8729399B2 (en) * | 2010-05-31 | 2014-05-20 | Hitachi Metals, Ltd. | Flat cable and method for fabricating the same |
CN102262933B (en) * | 2010-05-31 | 2015-06-24 | 日立金属株式会社 | Flat cable and method for fabricating the same |
US9431784B2 (en) | 2010-05-31 | 2016-08-30 | Hitachi Metals, Ltd. | Method of fabricating a flat cable |
US8646397B2 (en) | 2010-12-17 | 2014-02-11 | Midcon Cables Co., Inc. | Method and apparatus for producing machine stitched flat wiring harness |
US20140054085A1 (en) * | 2011-04-24 | 2014-02-27 | Tyco Electronics Nederland Bv | Cable Assembly Comprising A Flexible Support Made From A Textile Material |
US10132013B2 (en) | 2015-05-12 | 2018-11-20 | Taiwan Textile Research Institute | Conductive textile |
WO2021119224A1 (en) * | 2019-12-12 | 2021-06-17 | WEAV3D, Inc. | Interlaced composites integrated with transmission material and method for fabricating the same |
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Legal Events
Date | Code | Title | Description |
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STCF | Information on status: patent grant |
Free format text: PATENTED FILE - (OLD CASE ADDED FOR FILE TRACKING PURPOSES) |
|
AS | Assignment |
Owner name: ALBERT H. SURPRENANT, INC., A CORP. OF NH,NEW HAMP Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SURPRENANT, INC., A CORP. OF NH;REEL/FRAME:004731/0004 Effective date: 19861222 Owner name: TELEFLEX INCORPORATED, A CORP. OF DE,PENNSYLVANIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ALBERT H. SURPRENANT, INC.,;REEL/FRAME:004731/0005 Effective date: 19861222 Owner name: ALBERT H. SURPRENANT, INC., TALL PINES PARK, JAFFR Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:SURPRENANT, INC., A CORP. OF NH;REEL/FRAME:004731/0004 Effective date: 19861222 Owner name: PMC CORPORATION, 57 HARVEY RD., MANCHESTER, NH. 03 Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ALBERT H. SUPRENANT, INC.;REEL/FRAME:004682/0051 Effective date: 19870213 Owner name: TELEFLEX INCORPORATED, 155 SOUTH LIMERICK RD., LIM Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ALBERT H. SURPRENANT, INC.,;REEL/FRAME:004731/0005 Effective date: 19861222 Owner name: ALBERT H. SURPRENANT, INC., TALL PINES PARK, JAFFR Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:TELEFLEX INCORPORATED, A CORP. OF DE;REEL/FRAME:004731/0006 Effective date: 19861222 |
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Owner name: PMC CORPORATION, 57 HARVEY ROAD, MANCHESTER, NEW H Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ALBERT H. SURPRENANT, INC., A CORP. OF NH;REEL/FRAME:004690/0294 Effective date: 19870319 Owner name: ALBERT H. SURPRENANT CORPORATION Free format text: CHANGE OF NAME;ASSIGNOR:SURPRENANT, INC.;REEL/FRAME:004690/0321 Effective date: 19720203 Owner name: ADVANCE GROUP, INC., 1661 INDUSTRIAL WAY, BELMONT, Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:PMC CORPORATION, A CORP. OF NH.;REEL/FRAME:004690/0292 Effective date: 19870319 |
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