US3526868A - Incandescent lamp socket - Google Patents

Incandescent lamp socket Download PDF

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Publication number
US3526868A
US3526868A US841499A US3526868DA US3526868A US 3526868 A US3526868 A US 3526868A US 841499 A US841499 A US 841499A US 3526868D A US3526868D A US 3526868DA US 3526868 A US3526868 A US 3526868A
Authority
US
United States
Prior art keywords
lamp
lever
tabs
spring
ejecting
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
US841499A
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English (en)
Inventor
William R Mattson
Richard J Shea
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.)
GTE Sylvania Inc
Original Assignee
Sylvania Electric Products 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 Sylvania Electric Products Inc filed Critical Sylvania Electric Products Inc
Application granted granted Critical
Publication of US3526868A publication Critical patent/US3526868A/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
    • H01R33/97—Holders with separate means to prevent loosening of the coupling or unauthorised removal of apparatus held
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings

Definitions

  • the lamp used for illumination must be securely fixed to the socket.
  • This locked-in lamp arrangement has a two-fold purpose, mainly it is so that the apparatus can be transported from one site to another without removing the lamp. The other reason is that the lamp is usually operated other than in a base down position, therefore, it must be secured in place.
  • the socket of this invention not only firmly holds the lamp in an optically aligned position, but can be used to eject the lamp by manipulation of a single, spring-actuated lever.
  • an actuator lever controlled by a torsion spring is utilized to lock the lamp in the socket as well as to eject it when replacement is required.
  • the electrical contacts are initially fitted into the socket and the lower edge of the base is disposed between a set of lock tabs on the actuator lever.
  • the actuator lever is then tripped. This action forces the lever into a locked position and the tabs on the lever engage a ledge on the lamp base.
  • the torsion spring is designed so that a locking force occurs during insertion and an open position occurs when the actuator lever is tripped to eject the lamp.
  • the actuator lever When ejecting the lamp from the socket, the actuator lever is moved counter to insertion. A set of ejecting tabs on the actuator lever are disposed beneath the lamp base and movement of the actuator lever will lift the lamp out of the socket. When this movement is completed, it places the actuator lever in an open position. The lever can stay in this position until a new lamp is inserted into the socket between the locking tabs.
  • FIG. 1 is a front elevational view of the socket and a lamp locked in position.
  • FIG. 2 is a view similar to FIG. 1 but with the lamp in an ejected position.
  • FIG. 3 is a side elevational view of the socket and lamp.
  • FIG. 4 is a top view of the socket only.
  • FIG. 1 of the drawings the socket 10 of our invention is shown having a lamp 12 illustrated in phantom line, locked in its operative position.
  • FIG. 2 the same lamp 12 is shown being ejected from the socket 10.
  • the basic socket 10 has a generally rectangular main body 14 made from a refractory insulating material.
  • a metal bracket or yoke 16 having four upstanding arms 18 encompasses the body 14 and retains it through pivot studs 20, 21 positioned at either end. These studs extend through holes provided in the upstanding legs 18 and rest in concave grooves (not shown in the drawing) which prevent lateral movement.
  • the lower end of bracket 16 is provided with mounting tabs 24, each of which has an elongated slot 26 for the adaption of screws or bolts, when the socket is secured to an apparatus.
  • studs 20 and 21 form supports for the ejection mechanism.
  • Stud 20 supports spring-retaining bail 30 and stud 21 supports an actuator lever bail 32.
  • the actuator lever bail 32 pivots on approximately one third its length on stud 21.
  • the longer portion of the lever is provided with a lateral web area 36 which connects an identically shaped lever on the opposite side of the body 14 and is pivotally supported on the other end by stud 21.
  • Each short portion of the lever 32 is provided with two inwardly directed tabs 40 and 42 and a spring retaining ear 44. The function of tabs 40 and 42 will be described hereinafter in the description of the operational sequence.
  • the spring retaining bail 30 is pivoted at both ends on pivot 20.
  • the inside surface of the web portion of the bail is provided with a stud 50 (as seen in FIG. 3) and a torsion spring 52 is anchored thereabout.
  • the torsion spring 52 is directed beneath the legs of bail 30, each end of which extend toward the lever 32.
  • the end portions of the spring 52 are shaped as angled cam surfaces 56 with terminating hook ends 58.
  • the cam surfaces 56 of spring 52 liein grooves disposed on the retaining ears 44 of lever 32 and the hook ends 58 provide a limiting means for the lever 32.
  • the spring As viewed in FIG. 2 when the cam lever 32 is in its opened operative position, the spring is in a dormant spring position, that is, it is retained in the crook of the terminating end. In comparison to FIG. 1, the lever 32 is in its locked position when the spring 32 having its inclined cam surface 56 bearing against the cars 44 which provides spring tension to lever 32.
  • electrical connectors for the lamp are located in the main insulated body 14 and provide the necessary electrical connection to operate a lamp.
  • two receiving holes 64 are shown in the main body one slightly larger than the other which insures proper alignment of the lamp 12.
  • the e ectrical connectors are not shown but are standard cup connectors fixed to the end of lead-in wires 68. The connectors are aliged with the holes 64 and provide proper electrical connection to the prongs of the lamp 12.
  • an insulator pad 70 is positioned between the bracket 16 and the connectors providing a complete insulated receiver.
  • FIG. 2 a view of the socket is shown where a lamp 12 is in position to be placed into the socket 10.
  • the lever 32 in this position does not have the tension that normally is provided by the spring 52.
  • the prongs of the lamp are slipped into the mating holes 64 of the socket, the lower end of a ledge 75 on the lamp base contacts the inwardly directed ejecting tabs 42 of lever 32.
  • Forcing the prongs, and hence the base into socket will rotate the lever 32 to a point where locking the tabs 44 will ride down the cam portion of the spring 52.
  • the spring will overcome the resistance of the lever thereby snapping it into a locked position shown in FIG. 1. Locking tabs 40 then come to rest over the ledge 75. The lever is tensioned in this position by the spring 52 laying against locking tabs 44.
  • Ejection of the lamp is accomplished by reversing the procedure. Pressure applied to the end of the lever 32 which brings the ejecting tabs 42, now lying at the bottom of clearance space in the body, to a point underneath the base of the ledge 75. Further movement of the lever will fully eject the lamp.
  • a lamp holder comprising: socket means adapted to hold a prong type lamp, lever means pivotally associated with said socket means, locking tabs and ejecting tabs separated from each other disposed on said lever means and adapted to be disposed above and below a ledge on the lamp; spring means bearing against said lever means and adapted to hold the locking tabs against the top of the ledge in a locked position and to abut the bottom of the ledge during ejection, said socket means including a flat metal bracket having a first set and a second set of oppositely disposed upstanding legs at each end thereof and an insulated lamp receiving body portion fitted and held within the confines of the legs; a pair of pivot studs fitted to each top end of the legs to retain saidlamp receiver with the bracket.
  • lever means includes indentical side members joined and spaced from one another by a flat web portion, said side members connected to said pivot studs on the first set of upstanding legs of said metal bracket and said side members each having an outwardly directed spring retaining tab.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Connecting Device With Holders (AREA)
US841499A 1969-07-14 1969-07-14 Incandescent lamp socket Expired - Lifetime US3526868A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US84149969A 1969-07-14 1969-07-14

Publications (1)

Publication Number Publication Date
US3526868A true US3526868A (en) 1970-09-01

Family

ID=25285033

Family Applications (1)

Application Number Title Priority Date Filing Date
US841499A Expired - Lifetime US3526868A (en) 1969-07-14 1969-07-14 Incandescent lamp socket

Country Status (2)

Country Link
US (1) US3526868A (enrdf_load_stackoverflow)
GB (1) GB1302774A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3200031A1 (de) * 1982-01-04 1983-07-14 Helmut 7417 Pfullingen Eich Vorrichtung fuer die befestigungvon uv-brennern in bestrahlungsgeraeten
US6267609B1 (en) * 1998-09-29 2001-07-31 The Whitaker Corporation Ejection mechanism
US6554628B2 (en) * 1999-08-05 2003-04-29 General Electric Co. Remote cable extractor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2166300B (en) * 1984-10-30 1988-07-20 Amp Inc Electrical connector assembly

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2615071A (en) * 1945-06-02 1952-10-21 Kalart Co Inc Flash lamp socket with ejector

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2615071A (en) * 1945-06-02 1952-10-21 Kalart Co Inc Flash lamp socket with ejector

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3200031A1 (de) * 1982-01-04 1983-07-14 Helmut 7417 Pfullingen Eich Vorrichtung fuer die befestigungvon uv-brennern in bestrahlungsgeraeten
US6267609B1 (en) * 1998-09-29 2001-07-31 The Whitaker Corporation Ejection mechanism
US6554628B2 (en) * 1999-08-05 2003-04-29 General Electric Co. Remote cable extractor

Also Published As

Publication number Publication date
GB1302774A (enrdf_load_stackoverflow) 1973-01-10

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