|Publication number||US3040286 A|
|Publication date||Jun 19, 1962|
|Filing date||May 23, 1960|
|Priority date||May 23, 1960|
|Publication number||US 3040286 A, US 3040286A, US-A-3040286, US3040286 A, US3040286A|
|Inventors||Heller Robert M, Stanley Wallace A|
|Original Assignee||Watts Electric & Mfg Co|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (9), Referenced by (3), Classifications (5)|
|External Links: USPTO, USPTO Assignment, Espacenet|
June 19, 1962 R. M. HELLER ETAL 3,040,286
CONNECTOR STRUCTURE Filed May 25, 1960 2 Sheets-Sheet 1 ATTE- l R. M. HELLER ETAL June 19, 1962 CONNECTOR STRUCTURE 2 Sheets-Sheet 2 Filed May 25, 1960 s y 5M; n.. R 4 y ml. Nam o E Vw@ W W m A a r a e f o u R United States Patent O 3,040,236 CONNECTOR STRUCTURE Robert M. Heler and Wallace A. Stanley, Birmingham,
Nlich., assignors to Watts Eiectric & Mfg. Co., Birmxngham, Mich., a corporation of Michigan Filed May 23, 1960, Ser. No. 31,016 Claims. (Cl. 339-64) The invention relates to connector structure and refers more specically to structure for making a sealed connection having a predetenmined polarity between an electric light bulb and electric conductors with the conductors and light bulb in any relative angular position.
It is an object of the invention to provide connector structure for connecting an electric light bulb to electric conductors which connector structure insures proper polarity of the connection.
Another object is to provide connector structure for connecting an electric light bulb to electric conductors with the bulb and conductors in any relative angular position.
More specifically, it is an object to provide connector structure comprising a bulb socket including a socket tube adapted to receive an electric light bulb in one end thereof and also including a core within and extending `axially out of the other end of the socket tube having cylindrical concentric contact members therein with harness connector contact ends spaced axially of said socket tube, and a harness connector including a body member having a cylindrical shaft portion extending from one end thereof and also including cylindrical concentric contact members having axially spaced bulb socket contact ends secured to said shaft, which contact members are secured to electric conductors within the body member.
Another object is to provide connector structure as set forth above wherein the body member of the harness connector is provided with an axially extending annular ilange at said one end thereof which is adapted to be sleeved on said other end of the socket tube of the bulb socket to seal the lconnection between the harness connector and bulb socket from water, dust and corrosion.
Another object is to provide connector structure as set forth above wherein the axially outer contact member of the harness connector and the axially inner contact member of the bulb socket are of smaller diameter than I the axially inner contact member of the harness connector land the axially outer contact member of the bulb socket whereby the harness connector may be easily piloted into assembly with the Ibulb socket.
Another object is to provide a bulb socket comprising a socket tube adapted to receive an electric light bulb in one end thereof, an insulating core received in and extending axially outwardly through the other end of the socket tube and a pair of concentric cylindrical contact members carried by said core having harness connector contact ends spaced axially of the socket tube.
Another object is to provide a bulb socket as set forth above wherein the contact members are of different diameter.
Another object is lto provide a *bulb socket as set forth abo-ve wherein the contact members are segmental.
Another object is to provide a bulb socket as set forth above wherein the core has an outer diameter slightly less than the inner diameter of the socket tube and is spring urged toward said one end of the socket tube so that the core is permitted to tilt slightly to provide firm contact between the contact members carried thereby and the terminals of a light bulb inserted within said one end of the socket tube, which terminals are of different lengths.
Another object is to provide a socket tube as set forth above wherein a transverse recess is provided in the end of the core in which the bul-b contact ends of the contact "ice members are positioned to prevent shearing of the terminals of a light bulb inserted within the bulb socket during insertion thereof.
Another object is to provide a harness connector including a body member of insulating material having a cylindrical shaft portion extending from one end thereof and cylindrical concentric contact members having ends secured to and spaced axially of the shaft portion of the body member and extending through the body member to connect with electric conductors extending into the body member from the other end thereof.
Another object is to provide a harness connector as indicated above wherein the contact members lare of dierent diameters.
Another object is to provide a harness connector as set forth above wherein the contact members are segmental.
Another object is to provide connector structure as set forth above which is simple in construction, economical to manufacture and eicient in use.
`Other objects, advantages and novel details of construction of this invention will be made more `appa-rent as this description proceeds, especially when considered in connection with the accompanying drawings, wherein:
`FIGURE 1 is a partially broken-away side view of assembled connector structure according to the invention.
FIGURE 2 is a fragmentary longitudinal section View of the bulb socket illustrated in FIGURE 1.
FIGURE 3 is a left end View of the bulb socket illustrated in FIGURE 2.
FIGURE 4 is a right end View of the bulb socket illustrated in FIGURE 2.
FIGURE 5 is a partly broken away side view of the harness connector illustrated in FIGURE 1.
vFIGURE 6 is a left end view of the harness connector illustrated in FIGURE 5.
FIGURE 7 is a right end view of the harness connector illustrated in FIGURE 5.
FIGURE 8 is a perspective view of the contact members of the bulb socket shown in FIGURE 2 with the core member of the bulb socket shown in dashed lines.
FIGURE 9 is a longitudinal section of a modified bulb ysocket and harness connector similar to that illustrated in FIGURE l in which the contact members are of equal diameter.
FIGURE l0 is a perspective View of lthe contact members of the bulb socket shown in FIGURE 9 with the core member of the bulb socket shown in dashed lines.
With reference to the drawings, a particular embodiment of the invention will now be disclosed.
As shown in FIGURE l, an electric light bulbv generally indicated 10 is connected to the electric conductors 12 and 14 in accordance with the invention by means of the bulb socket 16 inserted in housing 18 and the harness connector 20 in assembly.
With the connector structure shown, the bulb socket 16 may be secured to the housing 18 separately from the harness connector 20. The harness connector 20 may then be assembled with the bulb socket 16 to provide a sealed electrical connection having a predetermined polarity between the conductors 12 and 14 and the laments 21 and 23 of light bulb 10 with the bulb socket 16 and harness connector 20 in any relative angular position. Such connection will be sealed against Water, dust and corrosion.
More speciiically, the bulb socket 16 comprises a socket tube 21, core 22, spring 24 and contact members 26 and 2S.
The socket tube 21 has axially oifset bayonet slots 30 in one end 32 thereof adapted to receive axially offset lugs 34 of an electric light bulb 10 inserted within the socket tube 21 to secure the bulb and socket tube together in a predetermined angular position.
3 Thus a connection of predetermined polarity is established between bulb filaments 21 and 23 connected to bulb terminals 52 and Si) respectively with conductors 12 and 14 respectively through bulb socket 16 and harness connector 2t) when the bulb 12 is positioned in bulb socket 16 and harness connector 28 and bulb socket 16 are assembled.
The socket tube 21 is further provided with a radially inwardly extending annular ilange 36 at the other end 38 thereof against which one end of the spring 24 is seated. Annular groove 40 is provided centrally of socket tube 21 and provides internal annular abutment 42 which is operable to prevent the core 22 under the influence of spring 24 from passing out of the end 32 of the socket tube 21.
'The core 22 is of insulating material shaped as shown and is positioned within the end 38 of the socket tube 2.1 for axial movement with respect thereto. The core 22 is held against rotation relative to the socket tube 21 by the configuration of the flange 36 and its own cross-section as shown.
.Core 22 is provid-ed with a radially outwardly extending annular flange 44 adjacent the end thereof within the socket tube 21 against which the other end of the spring 24 bears and which in turn bears against the abutment 42 when the bulb 18 is not inserted within the socket tube 21. With the bulb 10 inserted within the socket tube 21, the core 22 due to the annular flange 44 thereof having smaller outer diameter than the inner diameter of the socket ytube 21 is allowed to tilt slightly under influence of spring 24 to provide a solid electrical contact between the'bulb contacting ends 46 and 48 of the contact members 26 and 28 and the terminals 50 and 52 of the light bulb 10 which may be of different lengths.
As best shown in FIGURE 4, the end 54 of the core 22 is provided with a transverse recess 55 in which the bulb Contact ends of the Contact members 26 and 28 are positioned. Thus the terminals t) and 52 of the bulb 10 are not subject to detrimental shearing forces on being rotated into contact with the bulb contact ends 46 and 48 of the contact members 26A and 28 during insertion of the bulb in the socket tube 21.
A stepped recess S6 isprovided in the end 58 of the core 22'as shown. The contact members 26 and 28 are mounted in the stepped recess 56 and extend through vthe coreV 22 as shown and are secured in position in core 22 by the bulb contact ends 46 and 48.
As shown in FIGURES l through 8, the contact memybers 26 `and 28 comprise cylindrical harness connector contact ends 60 and 62, the previously indicator bulb Contact ends 46 and 48 and connecting strips 64 and 66 .therebetween respectively. It will be noted that in accordance with the invention the harness connector con- -tact end 62 ofthe Contact member 28 is of smaller diameter than `the harness connector contact end 60 of contact member 26. In addition the harness connector contact end 62 of the contact member 28 is positioned axially inwardly of the socket tube with respect to the harness connector contact end 60` of the contact member 26.
'Ihe harness connector 28 as shown best in FIGURES 5 through 7 comprises a body member 68 of insulating material having a cylindrical shaft portion '70 extending from end 72 thereof. Body member 68 also includes the annular axially extending ange 74 forming a Iboot for receivingthe end 38 of the socket tube 21 to seal the connection between the harness connector and bulb socket in assembly thereof las shown in FIGURE l.
The harness connector 20l also includes the contact members 76 and 78 having cylindrical concentric bulb socket contact ends 80 and 82 respectively, secured to the stepped shaft 7i) as shown -best in FIGURE 5. The contact members 76 and 78 are adapted to tit within and makeelectric-contact with the cylindrical harness connector-contact ends 62 and 60 respectively, of the contact members 2S-,and 26 of the bulb socket 16. The contact members 76 and 78 also include connecting strips 84 and 86 which extend through the body member 68 and are secured to the electric conductors 12 and 14 respectively.
A modification of the connector structure illustrated in FIGURES l through 8 is illustrated in FIGURES 9` and l0'. In the modified connector structure similar parts have been given similar numbers followed by the letter a. The cylindrical portions 64m and 62a of the contact members 26a and 28a of the bulk socket 16a of FIG- URES 9 and l0 are of the same diameter. The harness connector contact end 62a of the contact members 28a is, however, segmental to permit passage of the connecting strip 64e of the contact member 26a through the core member 22a. The connecting strip 64a is offset slightly radially outwardly at 88 to prevent shorting with the bulb socket contacting end of the contact member 76aI of the harness connector 20a to the strip 64a with the harness connector 29a in assembly with the bulb socket 16a. Likewise the contact members 76a and 78a of the harness connector 28a in the connector structure shown in FIGURES 9 and lO are of the same diameter.
It will be evident that with the connector structure of the invention the harness connector 20y is easily piloted into engagement with the bulb socket 16 either before or after the socket tube is assembled with the housing 18. Further it will he evident that with the structure disclosed it is impossible to connect the bulb socket 16 and the harness connector 20 of the invention so as to provide a circuit having the wrong polarity between iilaments 21 and 23 and conductors 12 and 14 through the contact members 28 and 76, and Sil and 78. Also connection may be made between the harness connector 2t) and the bulb socket 16 with any angular relationship therebetween. In addition the connection thus formed will be sealed against water, dust and corrosion Iby the boot structure 74 which lits snugly around the end of the bulb socket 16.
What we claim as our invention is:
l. A bulb socket comprising a cylindrical socket tube adapted to receive an electric light bulb in one end thereof and having a radially inwardly extending annular liange at the other end thereof, a cylindrical insulating cor'e mounted in the other end of the socket tube for axial movement with respect thereto one end of which extends through said other end of the socket tube, said insulating core having an axially extending recess in said one end thereof, a transverse recess extending across the other end thereof and a pair of openings extending axially of the core between said recesses, a pair of contact members secured Within said openings in said core and including ca'p portions extending substantially perpendicularly to the axis of generation of said cylindrical core positioned within said transverse recess, said contact members also including cylindrical portions at the other end thereof Within said -axially extending recess in axially spaced relation which cylindrical portions have a common axis of generation and are in surface-to-surface engagement with the core over the entire radially outer surface thereof, said core also including a radially outwardly extending annular liange adjacent said other end thereof, and resilient means operable between the flanges on said bulb socket and insulating core to bias the insulating core toward said one end of the socket tube.
2. Structure as claimed in claim l wherein said cylindrical portions of said contact members are segmental.
3. Structure as claimed in claim 1 wherein said cylindrical portions of the contact members are of the same diameter.
14. Structure as claimed in claim' 1 wherein said cylindrical portions of the contact members are of dierent diameter.
5. A bulb socket comprising a cylindrical socket tube adapted to receive an electric light bulb in one end thereof, an insulating core mounted in the other end of the socket tube one end of which extends through said other end sixt of the socket tube, said insulating core having an axially extending recess in said one end thereof and a pair of openings extending axially therethrough which openings terminate in one end in the recess, a pair of contact members extending through said openings having cap portions extending substantially perpendicularly to the axis of generation of the socket tube at the other end of the core and cylindrical portions adjacent said one end of the core which cylindrical portions are in axially spaced relation, have a common axis of generation and are in surface-tosurface engagement with the core over the entire radially outer surface thereof, and resilient means operable between the core and bulb socket for biasing the core tow-ard the one end of the bulb socket.
References Cited in the le of this patent UNITED STATES PATENTS v Campbell Apr. 8, 1913 Stearns June 29, 1915 Werner Nov. 8, 1927 Harris Sept. 10, 1929 Wagstai Ian. 17, 1950 Engqvist Mar. 7, 1950 Hull et al. June 11, 1957 Harrisv June 23, 1959 Davis Nov. 3, 1959
|Cited Patent||Filing date||Publication date||Applicant||Title|
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|US1144948 *||Dec 16, 1912||Jun 29, 1915||Jason C Stearns||Metal-armor circuit-connecting attachment.|
|US1648518 *||Jul 28, 1924||Nov 8, 1927||Blecteical costwectee|
|US1727826 *||Apr 5, 1926||Sep 10, 1929||Mark Harris||Filament tube|
|US2494845 *||Jun 12, 1946||Jan 17, 1950||United Carr Fastener Corp||Electric lamp socket|
|US2499474 *||May 9, 1945||Mar 7, 1950||Ericsson Telefon Ab L M||Electrical connector|
|US2795397 *||Apr 23, 1953||Jun 11, 1957||Drilling Res Inc||Electrical transmission lines|
|US2892178 *||Oct 26, 1956||Jun 23, 1959||Amp Inc||Button contact|
|US2911614 *||Oct 22, 1957||Nov 3, 1959||Walter W Davis||Polarized outlet and plug|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3170751 *||Jun 11, 1962||Feb 23, 1965||Watts Electric & Mfg Co||Lamp bulb stabilizing filament centering tube within a sealable capsule|
|US4548449 *||Dec 30, 1983||Oct 22, 1985||Corsetti John A||Lamp socket attachment|
|USRE33123 *||Oct 20, 1987||Dec 5, 1989||Dennis L. Johnson||Lamp socket|
|International Classification||H01R33/46, H01R33/05|