US3654379A - Security closure for electrically shielded cable raceway - Google Patents

Security closure for electrically shielded cable raceway Download PDF

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Publication number
US3654379A
US3654379A US82972A US3654379DA US3654379A US 3654379 A US3654379 A US 3654379A US 82972 A US82972 A US 82972A US 3654379D A US3654379D A US 3654379DA US 3654379 A US3654379 A US 3654379A
Authority
US
United States
Prior art keywords
cover
fasteners
adapter collar
openings
fastener
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US82972A
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English (en)
Inventor
Donald Howard Rodgers
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Danzer Metal Works Co Inc
Original Assignee
Danzer Metal Works Co Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Danzer Metal Works Co Inc filed Critical Danzer Metal Works Co Inc
Application granted granted Critical
Publication of US3654379A publication Critical patent/US3654379A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
    • H02G3/0406—Details thereof
    • H02G3/0418—Covers or lids; Their fastenings
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S292/00—Closure fasteners
    • Y10S292/45—Slot closure
    • 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
    • Y10T292/00—Closure fasteners
    • Y10T292/08—Bolts
    • Y10T292/1043—Swinging
    • Y10T292/1044—Multiple head
    • Y10T292/1045—Operating means
    • Y10T292/1049—Rigid
    • 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
    • Y10T292/00—Closure fasteners
    • Y10T292/08—Bolts
    • Y10T292/1043—Swinging
    • Y10T292/1075—Operating means
    • Y10T292/1083—Rigid
    • Y10T292/1091—Spring-arm catch
    • 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
    • Y10T70/00—Locks
    • Y10T70/50—Special application
    • Y10T70/5611—For control and machine elements
    • Y10T70/5854—Bolt, nut, stud, stud-cap
    • Y10T70/5867—Encased

Definitions

  • ABSTRACT A shielded raceway duct is provided in one wall thereof with an access opening surrounded by an adapter collar having a shielding gasket abutment flange.
  • a cover unit has interlocking hinged engagement with the collar and contains an RF energy tight gasket engageable with said flange of the adapter.
  • the adapter carries a side extension which supports spaced quick release fasteners and the cover carries an overlying housing extension having openings to receive the heads of the fasteners.
  • a locking member slidable within the housing extension of the cover is shiftable between positions where the fastener heads are exposed for manipulation and where they are covered and rendered inaccessible. The locking member is securely lockable to the cover in the fastener covering position.
  • the objective of the invention is to satisfy all of the above requirements by providing an efficient, economical and entirely practical security closure and RF energy sealing means for the access openings of communication cable raceways and the like.
  • the structure of the invention can readily be mounted on the top, bottom or sides ofa duct section to meet the needs of a particular installation.
  • FIG. 1 is a perspective view of a communication raceway section equipped with the security closure embodying the present invention.
  • FIG. 2 is an exploded perspective view of the closure on an enlarged scale.
  • FIG. 3 is a perspective view of a wrench for manipulating the quick release closure fasteners.
  • FIG. 4 is a side elevational view of section and parts broken away.
  • FIG. 5 is a longitudinal vertical section taken on line 5-5 of FIG. 4.
  • FIG. 6A is a fragmentary vertical section similar to FIG. 5 showing a locking channel in a release position and showing an adjacent quick release fastener in an unlocked position.
  • FIG. 6B is a similar fragmentary view in cross section showing the cover assembly separated from the adapter and the quick release fastener means.
  • FIG. 7 is a fragmentary plan view of the structure shown in FIG. 6A.
  • FIG. 8 is an enlarged vertical transverse section taken on line 8-8 ofFlG. 4.
  • FIG. 9 is a fragmentary vertical section taken on line 99 of FIG. 8.
  • FIG. 10 is a similar view taken on line 10-10 ofFIG. 8.
  • FIG. 9A is a view similar to FIG. 9 showing the indexing movement of a quick release fastener between stable positions at ninety degree intervals.
  • the numeral 20 designates a typical rectangular duct section forming a part of a shielded cable raceway having the invention applied thereto. It should be mentioned that the invention is applicable to any side wall of the duct section 20 or may be applied similarly to a terminal cabinet or other component of the raceway system.
  • the security closure structure constituting the invention shown in its entirety at 21 in FIG. 1 is applied to the raceway system at required intervals throughout the system to provide the neces sary access to the interior of the raceway by authorized peo ple. Since the closure structure is standard throughout the system, a complete detailed description of one closure unit will suffice to describe all similar units.
  • the closure is applied in FIG. 1 to one vertical side wall 22 of duct section 20 and this side wall has a rectangular access opening 23 formed therethrough, either at the time ofinitial manufacturing or in the fleld as the case may be.
  • a rectangular adapter collar 24 which extends continuously around the four sides of the rectangular opening 23 with the side walls of the adapter 24 spaced somewhat outwardly of the edges of opening 23 and disposed perpendicularly to the duct side wall 22.
  • the adapter collar 24 has a continuous marginal inturned mounting flange 25 formed integral therewith and abutting the outer face of side wall 22 with the edges in registry with the rectangular opening 23.
  • a continuous edge bead 26 of welding serves to rigidly join the adapter flange 25 to the duct side wall 22 as best shown in FIG. 8. It may be mentioned here that the parts involved are fabricated from low carbon galvanized sheet steel of substantially the type mentioned in said prior Merckle patents.
  • the adapter collar 24 On its outer open side, the adapter collar 24 carries an outwardly rolled flange or hem 27 extending around its two short sides and one longitudinal side, FIG. 2, and a similar inwardly rolled hem 28 is of the adapter collar.
  • the rounded shoulders 25* around all sides of the adapter collar lie in a common plane for even compressive contact with a metallic shielding gasket, to be describedpn the cover component.
  • a channel bracket 30 is securely welded to the adjacent collar side wall, FIG. 8.
  • the open side of the channel bracket 30 faces the duct side wall 22, as shown.
  • a plurality of equidistantly spaced quick release quarter turn cam fasteners 31 are mounted upon the channel bracket 30 in equidistantly spaced relation.
  • Each fastener 31 per se is conventional and comprises a cylindrical shank 32 engaging rotatably through an opening 33 provided in the channel bracket 30.
  • the fastener 31 carries a transverse cam locking head 34 at its outer end and has a shoulder 35 engaging the outer face of bracket 30.
  • An indexing washer 36 on the shank 32 is held against rotation thereon by a flat 37.
  • a retainer ring 38 engaging in a groove of the shank 32 prevents axial movement of the washer 36 on the shank 32 of the fastener.
  • the indexing washer 36 has four circumferentially equidistantly spaced notches 39 in its periphery, each opposing pair of notches adapted to receive the spring arms 40 of an indexing washer having a plate body 41 lying between the washer 36 and the main web of channel bracket 30.
  • the washer 36 rotates with the shank 32 and cam locking head 34 relative to the spring arms 44) and the plate 41 which carries the arms on an extension 42.
  • the arms and plate 41 do not rotate relative to the shank and washer or relative to the staprovided integrally on the remaining long side tionary channel bracket 30. As shown in FIG. 8, the head 34 of each fastener 31 is spaced outwardly somewhat from the mounting channel 30.
  • the invention further comprises a detachable cover 43 which is rectangular and generally coextensive with the adapter collar 24.
  • the cover 43 is similar to a shallow pan and embodies a main flat plate body 44 having marginal edge flanges 45 extending around three sides thereof, the flange on the long side of the cover having an integral inturned right angular lip 46 adapted to coact with the adjacent hem or flange 27 of the adapter collar to form an unpinned hinge or interlocking pivotal connection.
  • a relatively deep flange plate 47 perpendicular to the cover 43 and projecting substantially inwardly thereof and being integral therewith.
  • an L-shaped bar 48 extending for the full length of the cover along its long side and securely welded thereto.
  • This bar 48 forms with the cover 43 and flange plate 47 an elongated rectangular chamber or passage 49 for a channel-shaped locking bar 50 slidably mounted therein.
  • the locking bar 50 also extends for the full length of the cover and has an integral locking tab 51 at one end provided with an opening 52 to receive the shackle ofa combination padlock or the like. The remote end of the locking bar 50, FIG.
  • the cover itself has a mating extension tab 53 at one corner thereof with an aperture 54 adapted to register with the previously identified aperture 52 for receiving the shackle of the lock.
  • the plate body 44 of cover 43 adjacent the chamber 49 and locking bar 50 has a series of openings 55 formed therethrough on the same center spacing as the quick release fasteners 31.
  • the locking bar 50 is provided at the same spaced intervals with similar openings 56 and the number of openings in both cases, as well as the number of fasteners, will depend on the length of the particular security closure and this may vary, as explained.
  • the bar 48 is provided at the same spaced intervals with elongated slots 57 adapted to receive therethrough the heads 34 when the heads are turned into parallelism with these slots. This condition shown in FIGS. 6A and 6B allows detachment and removal of the cover 43.
  • the interior face of the cover plate body 44 carries a continuous metallic shielding gasket 58 extending in an uninterrupted manner around all four sides of the cover.
  • This metal gasket is of the material described in the prior Merckle patents and is attached at its interior edge to a rubber-like strip 59 whose sole purpose is to anchor the metallic shielding gasket to the plate body 44 with suitable adhesive exactly as described in said patents.
  • the shielding gasket 58 is positioned to directly abut the rounded shoulder 29 of the adapter collar so that the shoulder can properly compress the gasket, FIG. 8.
  • the gasketing forms a permanent and fixed part of the removable cover 43.
  • the fasteners 31 and their carrier bracket 30 form a permanent fixed unit on the adapter collar 24.
  • the locking bar 50 is a separable element and may be removed endwise from the channel or chamber 49.
  • FIG. 3 depicts a wrench 60 passable through the circular openings 55 and 56, FIG. 68, when the same are in registry.
  • the wrench has a slot 61 in its shank to engage over the fastener heads 34 for turning the fasteners.
  • FIG. 11 shows a slight modification of the invention wherein the adapter collar 24 is bolted removably at 62 to the wall 22 of the duct with an intervening section of metallic gasket 63 clamped therebetween to render the joint RF energy tight.
  • this arrangement instead of the welded construction shown in FIG. 8.
  • the construction of the closure in FIG. 11 is identical to that already described.
  • the cover is manipulated relative to the adapter collar 24 as suggested by the arrows in FIG. 2.
  • the lip 46 is brought into interlocking hinged relationship with the outturned hem or flange 27 on the long side of the adapter collar and the opposite side of the cover is merely swung downwardly around this pinless hinge and the slots 57 will pass over the fastener heads 34, it being understood that the heads are positioned as in FIGS. 6A and 6B.
  • the locking bar 50 will now be positioned to bring its openings 56 into registration with the openings 55 which is the condition shown in FIGS. 6A and 6B and the wrench 60 is utilized to turn the fasteners 31 or to their locking positions shown in FIGS. 4, 5 and 8.
  • the fastener heads 34 are across the slots 57 transversely and exert a camming action or pressure against the bar 48 to force the gasket 58 into compressive relationship with the continuous shoulder 29 of the adapter collar 24.
  • the described turning of the fastener heads 90 will cause their spring arms 40 to drop into one pair of the notches 39, FIG. 9.
  • the spring arms serve to releasably hold the fasteners in either of two 90 positions, FIGS. 5 and 6B, and in between these two positions when the fasteners are turned in either direction, the arms 40 will ride on the circular peripheries of the washers 36. This feature enables the mechanic to feel the proper locked or unlocked position of each fastener.
  • the bar 50 When all of the fasteners are locked, the bar 50 is shifted longitudinally to the position shown in FIG. 5 and also in FIG. 4 where the bar openings 56 are out of registry with the cover openings 55 and solid portions of the bar are covering the fasteners 31 and rendering them inaccessible from the outside.
  • the bar 50 is now fully within the channel 49.
  • the apertures 52 and 54 are in registration and the shackle of a suitable padlock, not shown, may be introduced through these apertures to securely lock the bar 50 in covering relationship to the several fasteners 31.
  • an unauthorized person cannot possibly manipulate the fasteners or remove the cover 43 to gain access to the raceway.
  • To remove the cover a simple reverse procedure is followed and this is thought not to require description in view of the foregoing.
  • the construction is rugged and durable, very simplified, economical to manufacture and substantially fool-proof to operate. lt affords maximum security against unauthorized access and yet renders the raceway easily accessible to properly authorized personnel.
  • a security closure for a shielded communication cable raceway or the like comprising in combination with a section ofsaid raceway, an adapter collar secured to a wall of said section in surrounding relation to an access opening in said wall, a supporting member for turnable fasteners on the adapter collar, plural spaced turnable fasteners on said supporting member, a separable cover having RF energy sealing gasketing adapted to engage a sealing shoulder of the adapter collar, said cover including a part adapted for interlocking engagement with the adapter collar, a member carried by the cover and having spaced openings to receive heads of the turnable fasteners lockingly, the cover having fastener access openings in substantial alignment with the fasteners through which a fastener operating tool may be inserted, and a locking bar slidably engaging the cover and having fastener access openings adapted to register with the access openings of the cover and shiftable out of registry therewith so that the locking bar extends over the fasteners and covers them and renders them inaccessible, and means on the locking
  • a security closure for a cable raceway or the like comprising a rectangular adapter collar attachable fixedly to a raceway section adjacent an access opening in said section, a fastener assembly including plural spaced quick release fasteners on the adapter collar externally thereof, a gasketed cover for said adapter collar having interlocking engagement therewith and sealing against the exterior end of the collar when in a closed position, means on the cover externally ofthe adapter collar and in opposed relation to said fastener assembly forming a locking bar channel, said channel including a wall having spaced openings to receive locking heads of said fasteners therethrough, said cover having fastener access openings in alignment with the last-mentioned openings, and an elongate bar member slidable within said channel and having spaced openings which register with the cover access openings in one longitudinal position of the bar member and which are out of registry with said access openings in another longitudinal position of the bar member, and apertured parts on the bar member and cover adapted to register and receive the shackle ofa lock when the opening
  • said fastener assembly comprising an elongated bracket secured to one side of the adapter collar, said plural fasteners mounted on said bracket in spaced relation and being rotary quarter turn quick release cam fasteners having elongate heads, the openings of said channel wall being elongate openings to receive said heads in one right angular position thereof and to lock said heads to the cover in a second right angular position thereof.
  • said cover comprising a shallow pan-like cover having marginal edge flanges, a right angular lip secured to one edge flange and being inwardly directed, an exterior hem flange on one side of the adapter collar adapted to interlock hingedly with said lip and to form therewith a pinless hinge between the cover and adapter collar allowing complete separation of the cover from the adapter collar when said fasteners are in a release position.
  • said fastener assembly comprising a channel member secured to the outside of the adapter collar along one side thereof, plural quick release fasteners on said channel member including turnable heads projecting above the channel member, an opposing elongated box-like housing part on the cover beyond the adjacent side of the adapter collar, said box-like housing part having a fastener head receiving slots and said cover having fastener access openings opposite said slots, and a longitudinally movable bar member engaging through the box-like housing part and having openings adapted to register with the access openings of the cover in one Iposition of the bar member, and means to lock the bar mem er to the cover rigidly with the openings of the bar member staggered and out of registration with the access openings of the cover and the bar member covering and concealing said heads of the quick release fasteners.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
  • Casings For Electric Apparatus (AREA)
  • Installation Of Indoor Wiring (AREA)
  • Details Of Indoor Wiring (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
US82972A 1970-10-22 1970-10-22 Security closure for electrically shielded cable raceway Expired - Lifetime US3654379A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US8297270A 1970-10-22 1970-10-22

Publications (1)

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US3654379A true US3654379A (en) 1972-04-04

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Application Number Title Priority Date Filing Date
US82972A Expired - Lifetime US3654379A (en) 1970-10-22 1970-10-22 Security closure for electrically shielded cable raceway

Country Status (7)

Country Link
US (1) US3654379A (OSRAM)
JP (1) JPS553883B1 (OSRAM)
BE (1) BE774215A (OSRAM)
DE (1) DE2152768A1 (OSRAM)
FR (1) FR2111763B1 (OSRAM)
GB (1) GB1359183A (OSRAM)
IT (1) IT948509B (OSRAM)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4618741A (en) * 1982-02-15 1986-10-21 Ega Limited Adaptor for connecting raceway trunking to a box for electrical components, and the adaptor and box in combination
US4661888A (en) * 1984-07-03 1987-04-28 Hewlett-Packard Company Removable modular housing for RF circuits
US5165189A (en) * 1991-05-10 1992-11-24 Besal Bernard P Access door for ductwork
US5353202A (en) * 1990-07-20 1994-10-04 International Business Machines Corp. Personal computer with shielding of input/output signals
US6505441B1 (en) * 2001-03-15 2003-01-14 Ductmate Industries, Inc. Access door for ductwork
WO2003098761A1 (en) * 2002-05-17 2003-11-27 Richard John Thompson Trunking and coupling means therefor
US20060032725A1 (en) * 2000-06-30 2006-02-16 Plesh Ronald L Rollers mountable to a cooling bed plate transfer grid
US20070256363A1 (en) * 2005-11-10 2007-11-08 York International Corporation Access door
US20090324188A1 (en) * 2008-06-25 2009-12-31 3M Innovative Properties Company Drop access location method and system for horizontal cabling in multi-dwelling unit applications
US20100247052A1 (en) * 2009-03-27 2010-09-30 3M Innovative Properties Company Low profile fiber drop point of entry system and method of installing
US20100243096A1 (en) * 2009-03-27 2010-09-30 3M Innovative Properties Company Ducts to support a drop access location system for horizontal cabling in multi-dwelling unit applications
US20110030190A1 (en) * 2009-08-06 2011-02-10 3M Innovative Properties Company System and method for providing final drop in a living unit in a building
US8559176B2 (en) 2010-07-19 2013-10-15 Panduit Corp. Systems and methods for managing heat generated by electronic equipment in an electronic equipment enclosure
US20150114708A1 (en) * 2013-10-31 2015-04-30 Tyco Electronics Corporation Cabled backplane system having an electromagnetic radiation absorber
US9640958B2 (en) 2010-04-14 2017-05-02 3M Innovative Properties Company Removable adhesive backed ducts for cabling and a removal method

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4058334A (en) * 1976-04-13 1977-11-15 Edson Tool And Manufacturing Company, Inc. Self-locking devices
DE8628985U1 (de) * 1986-10-30 1986-12-11 Thorsman & Co GmbH, 5880 Lüdenscheid Eingriffgeschützter Kabelkanal
DE102007033591B3 (de) * 2007-07-19 2009-01-29 Fms Fernmeldeservice Gmbh Kabelinstallationskanal

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3351699A (en) * 1965-03-19 1967-11-07 Danzer Metal Works Co Raceway for electrical cables and wires adapted to retain rf energy
US3370121A (en) * 1967-06-26 1968-02-20 Danzer Metal Works Co Rf energy retaining raceway for communications cables

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3351699A (en) * 1965-03-19 1967-11-07 Danzer Metal Works Co Raceway for electrical cables and wires adapted to retain rf energy
US3370121A (en) * 1967-06-26 1968-02-20 Danzer Metal Works Co Rf energy retaining raceway for communications cables

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4618741A (en) * 1982-02-15 1986-10-21 Ega Limited Adaptor for connecting raceway trunking to a box for electrical components, and the adaptor and box in combination
US4661888A (en) * 1984-07-03 1987-04-28 Hewlett-Packard Company Removable modular housing for RF circuits
US5353202A (en) * 1990-07-20 1994-10-04 International Business Machines Corp. Personal computer with shielding of input/output signals
US5165189A (en) * 1991-05-10 1992-11-24 Besal Bernard P Access door for ductwork
US20060032725A1 (en) * 2000-06-30 2006-02-16 Plesh Ronald L Rollers mountable to a cooling bed plate transfer grid
US6505441B1 (en) * 2001-03-15 2003-01-14 Ductmate Industries, Inc. Access door for ductwork
US20060012175A1 (en) * 2002-05-17 2006-01-19 Thompson Richard J Trunking and coupling means therefor
GB2390489B (en) * 2002-05-17 2006-04-05 Richard John Thompson Trunking and coupling means therefor
WO2003098761A1 (en) * 2002-05-17 2003-11-27 Richard John Thompson Trunking and coupling means therefor
US20070256363A1 (en) * 2005-11-10 2007-11-08 York International Corporation Access door
US8107785B2 (en) * 2008-06-25 2012-01-31 3M Innovative Properties Company Drop access location method and system for horizontal cabling in multi-dwelling unit applications
US20090324188A1 (en) * 2008-06-25 2009-12-31 3M Innovative Properties Company Drop access location method and system for horizontal cabling in multi-dwelling unit applications
US8360127B2 (en) 2008-06-25 2013-01-29 3M Innovative Properties Company System for installing horizontal cabling in multi-dwelling units
US20100243096A1 (en) * 2009-03-27 2010-09-30 3M Innovative Properties Company Ducts to support a drop access location system for horizontal cabling in multi-dwelling unit applications
US8295670B2 (en) 2009-03-27 2012-10-23 3M Innovative Properties Company Low profile fiber drop point of entry system
US20100247052A1 (en) * 2009-03-27 2010-09-30 3M Innovative Properties Company Low profile fiber drop point of entry system and method of installing
US8842960B2 (en) 2009-03-27 2014-09-23 3M Innovative Properties Company Ducts to support a drop access location system for horizontal cabling in multi-dwelling unit applications
US20110030832A1 (en) * 2009-08-06 2011-02-10 3M Innovative Properties Company Adhesive backed ducts for cabling applications
US20110030190A1 (en) * 2009-08-06 2011-02-10 3M Innovative Properties Company System and method for providing final drop in a living unit in a building
US9343885B2 (en) 2009-08-06 2016-05-17 3M Innovative Properties Company System and method for providing final drop in a living unit in a building
US9343886B2 (en) 2009-08-06 2016-05-17 3M Innovative Properties Company System and method for providing final drop in a living unit in a building
US9640958B2 (en) 2010-04-14 2017-05-02 3M Innovative Properties Company Removable adhesive backed ducts for cabling and a removal method
US8559176B2 (en) 2010-07-19 2013-10-15 Panduit Corp. Systems and methods for managing heat generated by electronic equipment in an electronic equipment enclosure
US9167719B2 (en) 2010-07-19 2015-10-20 Panduit Corp. Systems and methods for managing heat generated by electronic equipment in an electronic equipment enclosure
US20150114708A1 (en) * 2013-10-31 2015-04-30 Tyco Electronics Corporation Cabled backplane system having an electromagnetic radiation absorber
US9113568B2 (en) * 2013-10-31 2015-08-18 Tyco Electronics Corporation Cabled backplane system having an electromagnetic radiation absorber

Also Published As

Publication number Publication date
FR2111763B1 (OSRAM) 1975-04-18
IT948509B (it) 1973-06-11
JPS553883B1 (OSRAM) 1980-01-28
GB1359183A (en) 1974-07-10
DE2152768A1 (de) 1972-04-27
BE774215A (fr) 1972-04-20
FR2111763A1 (OSRAM) 1972-06-09

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