US3285560A - Mounting arrangement for a fluorescent lampholder assembly - Google Patents

Mounting arrangement for a fluorescent lampholder assembly Download PDF

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Publication number
US3285560A
US3285560A US489305A US48930565A US3285560A US 3285560 A US3285560 A US 3285560A US 489305 A US489305 A US 489305A US 48930565 A US48930565 A US 48930565A US 3285560 A US3285560 A US 3285560A
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United States
Prior art keywords
blade
contact
section
slot
lampholder
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
US489305A
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English (en)
Inventor
John M Pistey
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.)
General Electric Co
Original Assignee
General Electric Co
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
Priority claimed from US357578A external-priority patent/US3337837A/en
Priority to GB12382/65A priority Critical patent/GB1074163A/en
Priority to DE19651489325 priority patent/DE1489325B1/de
Priority to BE662087D priority patent/BE662087A/xx
Priority to CH466865A priority patent/CH435450A/de
Priority to NO157539A priority patent/NO119187B/no
Priority to SE4348/65A priority patent/SE310736B/xx
Application filed by General Electric Co filed Critical General Electric Co
Priority to US489305A priority patent/US3285560A/en
Publication of US3285560A publication Critical patent/US3285560A/en
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
    • H01R33/05—Two-pole devices
    • H01R33/06—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other
    • H01R33/08—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other for supporting tubular fluorescent lamp
    • H01R33/0827—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other for supporting tubular fluorescent lamp characterised by the contacts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
    • H01R33/05—Two-pole devices
    • H01R33/06—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other
    • H01R33/08—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other for supporting tubular fluorescent lamp
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • 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
    • Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
    • Y10S411/955—Locked bolthead or nut
    • Y10S411/965—Locked bolthead or nut with retainer
    • Y10S411/97—Resilient retainer

Definitions

  • the present invention relates to electric lampholders, and more particularly to an improved mounting arrangement especially suitable for securing a fluorescent lampholder assembly in a lighting fixture.
  • My invention finds particular utility in lampholders for use with fluorescent lamps.
  • the lampholder contacts which engaged the lamp pins of the fluorescent lamps have been of predominantly two types.
  • One type is the resiliently biased contact arm or leaf spring having angular movement. This movement might also be characterized as a hinged or flexing movement.
  • This type of contact is exemplified by my Patent 3,060,400 which I have assigned to the same assignee as the present invention.
  • the other type of fluorescent lampholder contact is the one employing a plunger or straight line biased contact.
  • This type of contact generally has a coil spring which biases the contact directly against the lamp pin.
  • My Patent 2,716,738 is an example of this type of contact.
  • the De Reamer Patent 2,584,677 which is also assigned to the same .assignee shows some additional varieties of both types of the prior art lampholder contacts discussed above.
  • An object of my invention is to provide an improved mounting arrangement especially suitable for securing an electric socket, such as a lampholder assembly, in a lighting fixture.
  • Another object of my invention is to provide an improved yet inexpensive fluorescent lampholder assembly securing arrangement adapted for cooperative engagement with a mounting nut.
  • the lampholder housing has a projecting foot section with a slot passing through it.
  • Two transverse grooves are formed in the side walls of the slot and a recessed seat is formed at the bottom of the slot.
  • the nut has a planar section which is seated in the recess and extends across the slot. Upstanding legs formed on the base section extend into the slot and have teeth resiliently engaged within the groove to prevent the nut from being dislodged from the seat.
  • a threaded aperture is formed in the base section of the nut and aligned with the slot so that a bolt may be passed through the slot and threaded into the nut to secure the lampholder in a lighting fixture.
  • FIG. 1 is a side elevational view showing the general arrangement of a fluorescent lamp supported between a pair of lampholders embodying my invention
  • FIG. 2 is a front elevational view of one of the lampholders of FIG. 1;
  • FIG. 3 is a sectional view taken along line 3-3 of FIG. 2;
  • FIG. 4 is a rear view of the lampholder with the back cover and the right hand contact removed;
  • FIG. 5 is an edge view of the left hand contact of FIG. 4 illustrating the degree of twist in the blade
  • FIG. 6 is a perspective View of the contact blade of FIG. 5;
  • FIG. 7 is an edge view of the right hand contact
  • FIG. 8 is a sectional view taken along line 8-8 of FIG. 4;
  • FIG. 9 is a rear view of the back cover of the lampholder together with the fastening clip
  • FIG. 10 is a front elevational view of my lampholder mounting nut
  • FIG. 11 is a side elevational view of the mounting nut of FIG. 10;
  • FIG. 12 is a bottom plan view of the nut member of FIG. 10;
  • FIG. 13 is an isometric view of the nut of FIG. 10.
  • FIG. 14 is an isometric view partly in section of the lampholder of FIG. 1 showing the mounting nut of FIG. 10 engaged therewith.
  • FIGS. 5 and 6 of the drawings I have shown therein a contact or contact connector 1 cmbodying one form of the torsion contact aspect of my invention which is disclosed and claimed in my above identified co-pending application.
  • the torsion contact shown in FIGS. 5 and 6 is constructed for use in electric sockets for engagement with the pins 2 of a bi-pin fluorescent lamp such as the lamp 3 shown in FIG. 1.
  • the torsion contact 1 is of a thin blade construction and has a somewhat offset contact making section 4, an inter: mediate elongated section 5, a U-shaped yoke section 6 which is the mounting section of the contact and an angularly moving pressure locking type contact section 7.
  • the torsional section of the blade 1 includes part of the oifset contact making section 4 and the intermediate section 5. While these two sections are offset along their longitudinal edges, it may be seen that they are in alignment at one point intermediate their edges and therefore they have one common longitudinal axis.
  • the forces from the lamp pins as will be more fully explained hereinafter, produce a torsional efiect in the blade and this efiect is distributed from the point of actual contact down through the two sections, 4 and 5.
  • sections 4 and 5 together form a unified torsion action section or torsional contact making section 8 and the actual contact making section of the blade is that portion of the larger contact making section that is actually engaged by a lamp pin.
  • FIG. 7 shows the right hand contact blade 9.
  • Contact blade 9 is a mirror image of blade 1 and the parts have been numbered the same. It will be understood that the operation and construction of the blades is the same, the reason for the reversal of arrangement being that one is the left hand contact blade of a pair and the other the right hand contact blade.
  • the plane of the contact making section 4 can be seen in FIG. 5 to be oifset from the plane of the intermediate section 5.
  • the number of degrees by which the contact making section 4 is offset from the plane of the intermediate section 5 depends upon a number of variable factors, including the material used in con structing the blade, the thickness and the width of the blade, the amount of resistance to torsional twist desired and the size of the mating contact, etc. Of further significance would be the degree of firmness of the engagement desired between the two mating contacts. In one application I have formed my contact blades of Phosphor-bronze with the angle of the offset in this particular application being 8".
  • torsional action is particularly desirable.
  • torsional contact action can give a rigid and firm engagement against an inserted mating contact accompanied by a very desirable wiping action.
  • this wiping action occurs as the torsion contact blade is cammed around and then allowed to partially return as the lamp pin is fully positioned in making engagement with it.
  • the torsion contact is twisted to a greater extent during an initial stage of the insertion of a lamp pin into a lampholder than it is in its final engaged position which means the contact is twisted in one direction and then due to the torsional return action moves back along the lamp pin as some of the torsional forces are reduced.
  • the lamp pin gets more than a straight line wipe as its passes along the edge of the blade into a seated position. It has been observed that the torsional section of the contact blade does not have a perfectly pure torsion action for when the blade twists around there is usually some amount of angular bending, but the characteristic feature of the torsional sections operation is a twisting or torsion action.
  • the housing 10 is recessed, recess 11 being divided into two hollow compartments 12 and 13.
  • the hollow chambers or recesses 12 and 13 are mirror images of one another.
  • the housing 10, as may be seen in FIGS. 24 and 9, has a front wall 14 and a rear wall 15.
  • the rear wall 15 includes a removable cover member 16, which is secured in position by the clip 17, the two legs of which engage in the slots 17a and 17b.
  • the longitudinal rib 18 can be seen to divide the recess 11 into the two hollow chambers or recesses 12 and 13.
  • This longitudinal rib 18 is formed integrally with the front wall 14.
  • a transverse rib 19 can be seen to extend across the hollow chamber 12 between the longitudinal rib 18 and the side wall 20 of the housing.
  • This transverse rib 19 has an upper step 21 on its upper surface extending inwardly from the side wall 20.
  • a lower step 22 is formed on the lower surface of the transverse rib 19.
  • the lower step 22 is centrally located and spaced from the side wall 20 and the longitudinal rib 18.
  • the transverse rib 19 is formed integrally with the front wall and projects rearwar'dly from the front wall.
  • Transverse rib 19 is also 4 integral with the longitudinal rib 18 and the side wall which it extends between.
  • a pair of aligned lower ribs 23 project inwardly from the side wall 20 and the longitudinal rib 18 respectively as shown in FIG. 4.
  • the ribs 23 are spaced below the lower surface of the step 22 a sufiicient distance to permit the insertion of the blade thickness of the contact 9 between the two ribs and the lower step surface.
  • An upper rib 24 projects from the longitudinal rib 18 and it is spaced above the upper surface of the step 21 a sufficient distance to enable the insertion of the blade thickness of the contact 9 therebetween.
  • a supporting fulcrum or boss 25 projects into the hollow chamber 12 from the side wall 20 above the rib 24. It is formed integrally with the front wall 14 and the side wall 20. This fulcrum boss provides support for the contact blade, i.e., a surface against which the blades outer edge can bear as it twists, and a limited engagement point from which some angular blade motion can occur.
  • the contact blades 1 and 9 can be seen in FIGS. 5-7 to be mirror images formed for mating cooperation with the ribs 19 in the respective compartments 12 and 13 which are correspondingly mirror imaged.
  • Contact 1 may be seen in FIG. 4 mounted in hol low compartment 13.
  • compartment 13 The detailed features of compartment 13 have not been described, it being understood that they are the same as those in compartment 12 being mirror images thereof.
  • Contact blade 1 can be seen to have its mounting section 6 formed in the shape of a U-shaped yoke as previously set forth.
  • the yoke section is designed for cooperating engagement with the transverse rib 19 and the trapping ribs 23 and 24.
  • the yoke section has an upper leg 26 which is shown in FIG. 4 in trapped engagement between the trapping rib 24 and the upper step 21.
  • the bight section 27 extends over' the rear surface of the transverse rib 19, and the lower leg 28 of the yoke section 6 is in trapped engagement between the lower step 22 and the pair of lower trapping ribs 23.
  • the blade 1 has notched edges at 29 and 30 so that it will clear the ribs 23, and the elongated section 5 of the blade is spaced from the inner edge of the yoke section 6 so that it will clear the rib 24.
  • the fulcrum boss 25 engages against the outer edge of the 'blade as seen in FIG. 4 to support the blade and insure that the outer edge of the blade is supported from the side wall 20 when one of the lamp pins is inserted in the lampholder.
  • the fulcrum boss provides a support against which the outer edge of the contact blade can bear as the blade twists and it also provides a limited engagement point from which angular motion can occur.
  • the torsional contact section is positioned near the front wall of the housing 10. This has the advantage of enabling fairly short bi-pins to be properly engaged. In other words, with such an arrangement it is only necessary that the bi-pins penetrate into the housing recess a short distance. It may also be seen that the offset of the contact blades is angled toward the front wall 14 and the slot 33, see FIG. 2. This .makes it unlikely that the lamp pins will push the contact blades toward the back wall of the housing beyond the end of the lamp pins or that a blade might twist out beyond the end of a lamp pin and become disengaged from a firm edge contact with the lamp pin.
  • the entrance slot 33 for the lamp pins may be seen formed in the upper side wall of the housing and extending into an annular opening in the front wall 14 of the housing 10 which forms slot 34 about the two section center post 35.
  • the upper portion of the inner edge of the contact making section 4 is shaped so that one of the lamp pins may ride over the arcuate surface of the center post and engage against the upper projecting edge portion 36 to cam the blade aside as it passes between the post 35 and projection 36.
  • This pin will then seat in seating notch 37 on the inner edge of the contact making section 4.
  • a lower projection or shoulder 38 resists the passage of this pin beyond the seating notch and the upper projection or shoulder 36 resists the pins passing back by it.
  • this resistance is due to the resiliency of the contact blade as well as the shape of the blade edge.
  • the other pin of the bi-pin lamp passes through the center slot in the center post and rides up over the other arcu-ate surface of the center post engaging the lower projection 38 of the other contact blade and camming the other blade aside as it passes between the post 35 and projection 38.
  • This other lamp pin will then seat in the seating notch 37 in the inner edge of the contact making section 4- of the other blade.
  • the upper projection 36 resists the .passage of this other pin beyond the seating notch while the lower projection 38 resists the pins passing back by it.
  • the relative moment of the torsional movement and of the angular .or flexing movement varies depending upon the relationship of many factors, such as, the angle of the offset, the material used in constructing the blade, the thickness and width of the blade, etc.
  • the combined torsional and angular displacement of the contact blades provides the necessary blade displacements for receiving the lamp pins.
  • FIG. 4 Two conductor receiving passageways 39 are formed through the front wall 40 of the foot portion 41 of the housing 10 for each of the blade compartments 12 and 13 (see also FIG. 2).
  • An unlocking slot 42 is also formed through the front wall of the foot 41 for each compartment.
  • the angular moving section 7 (FIG. 6) is divided into two pressure locking portions 43 and 44 by the slit 45 which terminates in an aperture 46.
  • the aperture 46 prevents the slit 45 from enlarging.
  • Each of the hinged blade portions 43 and 44 has a longitudinally extending groove 47 which terminates in the outer lower edge of the pressure locking section.
  • Each groove 47 is deepest at its terminus at the edge of the blade.
  • Each of the blade sections'43 and 44 is positioned across a respective one of the conductor receiving passageways 35 with the deep edge of the grooves 47 aligned with the passageway.
  • the pressure locking section is tightened by the reversal of the conductors movement and the extraction of the conductor is resisted.
  • a tool (not shown) may be inserted through the unlocking slot 42 against the blade and the blade maybe pushed inwardly relieving the pressure on the conductor and allowing it to be more easily extracted from the lampholder.
  • two conductors may be attachedto a single blade to form one continuing side of the parallel circuit.
  • both of the blades 1 and 9 are the same, only mirror images, and that both of the recesses 12 and 13 are the same, only mirror images, and therefore they 'have been discussed singularly, it being understood that they have the same operable construction.
  • FIG. 2 A slot 48 may be seen passing through the foot section 40 and a pair of opposed grooves 49 are formed in opposed slot walls.
  • a recessed seat 50 is formed at the bottom of the slot in the lower side wall of the foot member 41. The plane of this seat is transverse to the axis of the slot.
  • a mounting nut 51 is formed for cooperative engagement in the slot 48.
  • the nut member 51 has a planar base section 52 with an aperture 53 formed centrally therethrough and a collar extension 54 protruding from one of its faces.
  • the aperture 53 has screw threads which are continuous with threads formed in the collar portion 54, as seen in FIG. 13.
  • Four legs 55 project from opposed linear side edges of the base section above the face of the base section opposite the collar section 54. Two of the legs are attached to each of the opposed linear sides of the base section and spaced inwardly of the ends of the other sides as shown in FIGS. 1014.
  • Each of the legs 55 has a tooth 56 at its outer end for engagement in one of the grooves 49. It may .be seen that the teeth on the two legs on the frontally positioned side, looking at FIG. 10, face in opposite directions. The teeth on the two legs on the opposite linear side also face in opposite directions from one another and in the same direction as the teeth on the first side.
  • the mounting nut is made from a resilient material and it is snapped into position by forcing it upwardly into the slot until the base portion 52 seats on the seat 50 at the entrance to the slot with the teeth 56.engaged in the grooves 49.
  • the teeth 56 and the grooves 49 serve as cooperating catch means to hold the nut in position.
  • a screw 57 can then be inserted through a fixture panel 58 as shown in FIG. 14 and through the slot 48 for threaded receipt in the nut 51. Then the screw clamps the mounting nut, the lampholder foot and the fixture together rendering the integral catch means unnecessary except to carry and position the nut prior to its clamped engagement in the fixture.
  • the nut could be used as a bracket with an unthreaded aperture.
  • a bolt could be used on the collar side for threadably mating with the screw.
  • a lampholder assembly comprising a housing having a section with a slot therethrough, a pair of catch means formed on two opposed walls of said slot, and a mounting nut having a base portion and upstanding legs, a catch means on each of said legs, said nut being mounted on said housing with said catch means on said legs engaged with said catch means in said slot and with said base portion bridging said slot, and an aperture through the bight portion of said nut whereby a bolt can be received to secure said lampholder to a lighting fixture.
  • a lampholder assembly comprising a housing having a section with a slot therethrough, a pair of grooves in two opposed slot walls, said grooves being formed transverse to the axis of said slot, a recessed seat at one entrance to said slot, said seat having a plane transverse to the axis of said slot, a mounting nut having a planar base section with an aperture formed centrally therethrough, a collar extension protruding from one face of said base section about said aperture, a continuous thread being formed through said aperture and said collar, said base section having two opposed sides, and four legs projecting above the other face of said base section, two of said legs attached at the other of said opposed sides, said legs being spaced in from the ends of said sides, a tooth at the outer end of each of said legs for engagement in one of said grooves in said slot of said housing member, the teeth on the two legs on the first said side facing in opposite directions, and the teeth on the two legs on said other side facing in opposite directions from one another but in the same directions as the teeth on the first said side,

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Knives (AREA)
  • Connecting Device With Holders (AREA)
US489305A 1964-04-06 1965-09-22 Mounting arrangement for a fluorescent lampholder assembly Expired - Lifetime US3285560A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
GB12382/65A GB1074163A (en) 1964-04-06 1965-03-24 Electric socket
DE19651489325 DE1489325B1 (de) 1964-04-06 1965-04-03 Lampenfassung fuer eine Leuchtstoffroehre
CH466865A CH435450A (de) 1964-04-06 1965-04-05 Sockel zur Aufnahme von Lampen
NO157539A NO119187B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1964-04-06 1965-04-05
BE662087D BE662087A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1964-04-06 1965-04-05
SE4348/65A SE310736B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1964-04-06 1965-04-05
US489305A US3285560A (en) 1964-04-06 1965-09-22 Mounting arrangement for a fluorescent lampholder assembly

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US357578A US3337837A (en) 1964-04-06 1964-04-06 Electric connector with torsion contacts
US489305A US3285560A (en) 1964-04-06 1965-09-22 Mounting arrangement for a fluorescent lampholder assembly

Publications (1)

Publication Number Publication Date
US3285560A true US3285560A (en) 1966-11-15

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US489305A Expired - Lifetime US3285560A (en) 1964-04-06 1965-09-22 Mounting arrangement for a fluorescent lampholder assembly

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US (1) US3285560A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BE (1) BE662087A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CH (1) CH435450A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE1489325B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1074163A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NO (1) NO119187B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
SE (1) SE310736B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3478801A (en) * 1968-02-27 1969-11-18 Tinnerman Products Inc Fastening device
US4208702A (en) * 1978-11-01 1980-06-17 General Electric Company Mounting means for lamp fixture
US20110235319A1 (en) * 2010-03-23 2011-09-29 Panasonic Electric Works Co., Ltd. Light source, lamp socket and illumination device using the lamp socket
WO2014140999A1 (en) * 2013-03-11 2014-09-18 Koninklijke Philips N.V. Adapter device for retrofitting in lighting arrangements

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2272497B (en) * 1989-11-13 1994-07-27 Berg Winfred M Inc A nut segment for an anti-backlash nut

Citations (5)

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Publication number Priority date Publication date Assignee Title
US2465326A (en) * 1946-03-29 1949-03-22 Sylvania Electric Prod Assembly clamp for lamp holders
US2584677A (en) * 1945-11-02 1952-02-05 Gen Electric Lamp socket for elongated tubular lamps
GB707819A (en) * 1951-06-29 1954-04-21 Philidas Ltd Improvements in or relating to nuts of the self-locking or "stiff" type
US2716738A (en) * 1954-08-30 1955-08-30 Gen Electric Lampholders for tubular lamps
US3060400A (en) * 1960-06-27 1962-10-23 Gen Electric Fluorescent lampholder with quickconnect terminals

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE856181C (de) * 1949-06-18 1952-11-20 Busch Jaeger Luedenscheider Me Fassung fuer Roehrenlampen mit Kontaktstiften
DE1037555B (de) * 1952-04-04 1958-08-28 Bbc Brown Boveri & Cie Kontakteinrichtung mit aus Blechstreifen hergestellten Kontaktlamellen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2584677A (en) * 1945-11-02 1952-02-05 Gen Electric Lamp socket for elongated tubular lamps
US2465326A (en) * 1946-03-29 1949-03-22 Sylvania Electric Prod Assembly clamp for lamp holders
GB707819A (en) * 1951-06-29 1954-04-21 Philidas Ltd Improvements in or relating to nuts of the self-locking or "stiff" type
US2716738A (en) * 1954-08-30 1955-08-30 Gen Electric Lampholders for tubular lamps
US3060400A (en) * 1960-06-27 1962-10-23 Gen Electric Fluorescent lampholder with quickconnect terminals

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3478801A (en) * 1968-02-27 1969-11-18 Tinnerman Products Inc Fastening device
US4208702A (en) * 1978-11-01 1980-06-17 General Electric Company Mounting means for lamp fixture
US20110235319A1 (en) * 2010-03-23 2011-09-29 Panasonic Electric Works Co., Ltd. Light source, lamp socket and illumination device using the lamp socket
US9318860B2 (en) * 2010-03-23 2016-04-19 Panasonic Corporation Light source, lamp socket and illumination device using the lamp socket
WO2014140999A1 (en) * 2013-03-11 2014-09-18 Koninklijke Philips N.V. Adapter device for retrofitting in lighting arrangements
CN105190167A (zh) * 2013-03-11 2015-12-23 皇家飞利浦有限公司 用于照明布置中的改型的适配器装置
US20160178169A1 (en) * 2013-03-11 2016-06-23 Koninklijke Philips N.V. Adapter device for retrofitting in lighting arrangements

Also Published As

Publication number Publication date
GB1074163A (en) 1967-06-28
CH435450A (de) 1967-05-15
SE310736B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1969-05-12
DE1489325B1 (de) 1970-05-21
NO119187B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1970-04-06
BE662087A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1965-08-02

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