US3601778A - Lamp socket - Google Patents

Lamp socket Download PDF

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Publication number
US3601778A
US3601778A US796058A US3601778DA US3601778A US 3601778 A US3601778 A US 3601778A US 796058 A US796058 A US 796058A US 3601778D A US3601778D A US 3601778DA US 3601778 A US3601778 A US 3601778A
Authority
US
United States
Prior art keywords
socket
insulating element
recited
section
cylindrical body
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
US796058A
Other languages
English (en)
Inventor
Ronald G Hollett
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.)
Microdot Inc
Original Assignee
Microdot 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 Microdot Inc filed Critical Microdot Inc
Application granted granted Critical
Publication of US3601778A publication Critical patent/US3601778A/en
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
    • H01R33/46—Two-pole devices for bayonet type base

Definitions

  • the socket is constructed from a tube having a pair of bayonet $108 and a locating slot formed outwardly of [52] 339/188, the tube wall.
  • a cylindrical insulating element has a pair of 339/14 conductors fixed thereto, the portion extending'from the front [51] face being helically formed for engaging the contacts of a two [50] FleldolSearch 339/ 188, fil t light and the extending f the real 217 4 face forming terminals.
  • a ground terminal is also supported by the insulating element having a portion in contact with the [56] new.
  • the invention pertains to a lamp socket which is rugged of construction, which is simple of manufacture and assembly and which positively locates the filaments of a light bulb in a desired position.
  • the socket is of tubular construction having bayonet slots and a locating slot pressed outwardly from the tube wall for locating a light bulb relative to the socket and the contact fingers relative thereto.
  • a cylindrically formed insulating element has three apertures therethrough, two for receiving the bodies of conducting elements which are fixed thereto having nested fingers of helical shape at the forward or bulb receiving end with the portions extending from the rear face forming terminals.
  • the third aperture receives a ground terminal which is secured to the insulating element and which contacts the wall of the tube.
  • the ground terminal extends rearwardly from the insulating element and is spaced a greater distance from the center thereof for locating corresponding contacts in a plug which are to engage the terminals.
  • the outwardly extending locating slot positions the socket within an aperture of a receptacle, panel or other supporting element for locating the pair of filaments within the lamp bulb in predetermined position relative thereto.
  • Various known means may be provided for securing the socket in sealed relation to the receptacle or other support and retaining it in fixed or releasable relation therewith.
  • FIG. '1 is a sectional view of a socket mounted in a receptacle embodying features of the present invention
  • FIG. 2 is a broken end view of the socket illustrated in FIG. 1, as viewed from the point 2 thereof;
  • FIG. 3 is a broken end view of the socket illustrated in FIG. 1, as viewed from the point 3 thereof;
  • FIG. 4 is a sectional view of the structure illustrated in FIG. 1, taken on the line 4-4 thereof;
  • FIG. 5 is a sectional view of the structure illustrated in FIG. 2, taken on the line 5-5 thereof with parts in elevation;
  • FIG. 6 is a view in elevation of one of the terminal elements illustrated in FIG. 1;
  • FIG. 7 is a view of the structure illustrated in FIG. 6, as viewed from the lamp bulb-engaging end thereof;
  • FIG. 8 is a view of the structure illustrated in FIG. 6 after the stamping and before the forming operation thereof.
  • the socket 1 1 has a tubular body 12 containing a pair of oppositely disposed bayonet slots 13 and a locating slot 14 pressed outwardly of the wall thereof.
  • a cylindrical insulating element 15 is insertable within the tubular body having an outwardly extending rib engaged in the locating slot 14. The insulating element 15 is retained against further inward movement by a section 16 of the tubular wall which is deflected inwardly therefrom to form a stop against which the bottom of the insulating element abuts when urged inwardly by the lamp bulb.
  • the front face of the insulating element has a cylindrical recess 17 extending therein from which flat helical fingers 18 and 19 extend in a position to engage the two contacts of a double filament lamp bulb.
  • a pair of rectangular slots 21 extend through the body of the insulating member 15 spaced equidistantly from the center thereof and in angular relation to each other.
  • the fingers l8 and 19 are located on the end of a stamping 22 which have a pair of rectangular sections 23 and 24 extending therefrom with a lanced-out finger 25 adjacent to the finger 18 or 19 and Ranger 26 lanced from the section 24 and extending in the same direction as; fi nger 25.
  • the fingers 18 and 19 are helically formed as illustrated in FIG. 6, and the section 24 is bent backward onto'the section 23.
  • the fingers 25 and 26 are oppositely presented and located a distance apart such as to have the finger 25 engage the front face of the body portion of the insulating element 15 and the finger 26 engage the rear face thereof when both of the sections are inserted through slots 21 to form terminal blades.
  • a shoulder 30 is provided at the upper end of the section 23 in position to engage the front face of the body portion of the insulating element in which case the finger 25 can be eliminated.
  • a ground terminal 27 is secured in a third aperture 28 through the body of the insulating element 15 spaced a greater distance from the center thereof than that of the slots 21 to form a locating relation therewith.
  • the ground terminal 27 is made from a strip of conductive material which is bent backward on itself to form a terminal blade and have a section 29 in engagement with a section 31 to form the ground terminal 27.
  • the free end of the section 29 extends through the aperture 28 and has a lanced-out finger 33 at the upper end which engages the front face of the body portion of the insulating element 13.
  • the section 31 is bent outwardly at 34 and formed forwardly at 35 and shaped on an arc struck from the center of the tubular body 12 to engage the wall thereof.
  • a wall of the tubular body may be staked on the forward side of the insulating element 15 to prevent it from moving forwardly when the lamp bulb is removed.
  • a flanged collar 37 is illustrated as being secured to the outer surface of the wall of the tubular body 12, with a flange 38 thereon to which a ring of elastomeric material 39 is secured for the purpose of sealing the body against the bottom of a receptacle or other support 41.
  • a predetermined sealing pressure applied thereto the forward end is spun over at 43 to permanently secure the body 12 to the receptacle.
  • this permanent attachment is by way of example and that there are other types of attaching means of the permanent or releasable types known in the art to be suitable which may be substituted therefor. It is to be understood that when the aperture 42 is provided through the receptacle or support 41 a notch is cut in the edge to receive the wall of the locating slot 14 to thereby orient the socket and therefore the pair of filaments relative to the support.
  • a cylindrical body having lamp bulb securing and locating slots in the wall thereof, a unit insulating element within the body having a rib extending in said locating slot, said element having a pair of rectangular apertures therethrough extending from the front to the rear face thereof, a pair of conducting members having a rectangular body portion extending through said slots forming rigid terminal blades i I 2;
  • unit insulat- .ing' element has a cylindrical recess inthe front 'end thereof in which aaid contact: can be deflected out of engagement' with v I laid cylindrical body.

Landscapes

  • Connecting Device With Holders (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
US796058A 1969-02-03 1969-02-03 Lamp socket Expired - Lifetime US3601778A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US79605869A 1969-02-03 1969-02-03

Publications (1)

Publication Number Publication Date
US3601778A true US3601778A (en) 1971-08-24

Family

ID=25167165

Family Applications (1)

Application Number Title Priority Date Filing Date
US796058A Expired - Lifetime US3601778A (en) 1969-02-03 1969-02-03 Lamp socket

Country Status (5)

Country Link
US (1) US3601778A (enExample)
JP (1) JPS498553B1 (enExample)
DE (1) DE2000853A1 (enExample)
FR (1) FR2032701A5 (enExample)
GB (1) GB1250442A (enExample)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3775728A (en) * 1972-07-19 1973-11-27 Itt Lamp holder
US3781755A (en) * 1972-07-19 1973-12-25 Itt Lamp holder
US3794962A (en) * 1972-06-02 1974-02-26 M Clark Ceiling lamp mounting
US3800267A (en) * 1972-06-28 1974-03-26 Itt Lamp socket
US3805211A (en) * 1972-05-09 1974-04-16 Microdot Inc Plastic lamp socket with latched insert

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2483137A1 (fr) * 1980-05-20 1981-11-27 Seima Douille pour le support d'une ampoule electrique

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1511267A (en) * 1920-03-22 1924-10-14 Richard H Croninger Lamp socket
US2549134A (en) * 1947-12-15 1951-04-17 Electric Service Mfg Co Lamp socket having leaf spring contacts
US3052867A (en) * 1958-11-12 1962-09-04 Burndy Corp Electrical connector
US3105730A (en) * 1960-01-04 1963-10-01 Watts Electric & Mfg Co Bulb socket adapter
US3139316A (en) * 1962-12-20 1964-06-30 Kingston Products Corp Lamp socket
US3272913A (en) * 1964-03-18 1966-09-13 Thomas & Betts Co Inc Two-wire socket insulator
US3344388A (en) * 1965-08-27 1967-09-26 Gen Motors Corp Multi-function clip means
US3460088A (en) * 1967-02-21 1969-08-05 United Carr Inc Blade terminal lamp socket

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1511267A (en) * 1920-03-22 1924-10-14 Richard H Croninger Lamp socket
US2549134A (en) * 1947-12-15 1951-04-17 Electric Service Mfg Co Lamp socket having leaf spring contacts
US3052867A (en) * 1958-11-12 1962-09-04 Burndy Corp Electrical connector
US3105730A (en) * 1960-01-04 1963-10-01 Watts Electric & Mfg Co Bulb socket adapter
US3139316A (en) * 1962-12-20 1964-06-30 Kingston Products Corp Lamp socket
US3272913A (en) * 1964-03-18 1966-09-13 Thomas & Betts Co Inc Two-wire socket insulator
US3344388A (en) * 1965-08-27 1967-09-26 Gen Motors Corp Multi-function clip means
US3460088A (en) * 1967-02-21 1969-08-05 United Carr Inc Blade terminal lamp socket

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3805211A (en) * 1972-05-09 1974-04-16 Microdot Inc Plastic lamp socket with latched insert
US3794962A (en) * 1972-06-02 1974-02-26 M Clark Ceiling lamp mounting
US3800267A (en) * 1972-06-28 1974-03-26 Itt Lamp socket
US3775728A (en) * 1972-07-19 1973-11-27 Itt Lamp holder
US3781755A (en) * 1972-07-19 1973-12-25 Itt Lamp holder

Also Published As

Publication number Publication date
GB1250442A (enExample) 1971-10-20
FR2032701A5 (enExample) 1970-11-27
DE2000853A1 (de) 1970-08-13
JPS498553B1 (enExample) 1974-02-27

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