US3910668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Socket for light bulb without threaded base
Assignee: Rafi Raimund Finsterholzl Elektrotechnische Spezialfabrik
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Filing: 1974-02-20
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Granted: 1975-10-07
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Expires: 1994-02-20
Abstract
Abstract A socket for a light bulb with oppositely outwardly projecting wire ends comprises an insulating housing having a bore for insertion of the bulb, the bore being formed with two opposite, axially extending guide grooves open toward its insertion end. Transverse slots in the housing, intersecting the guide grooves, accommodate bent-over extremities of two terminal tabs secured to the outer housing surface, these extremities having arcuate contact edges centered on the bore axis which resiliently engage the glass envelope of the inserted bulb through its projecting wire ends received in the grooves, these wire ends having been bent back alongside the envelope in the first phase of insertion by engagement with a pair of oppositely sloping lands at the socket mouth.
Inventors
- 👤 Albert Wasmeier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:59
CPC Classifications
H; H01; H01R; H01R33/00; H01R33/05; H01R33/06; H01R33/09
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
165 words
A socket for an electric light bUlb having an elongate glass envelope and a pair of wire ends projecting from opposite sides of said envelope, comprising: a housing of insulating material formed with a bore open at an insertion end thereof for receiving said envelope, said bore being provided with a pair of diametrically opposite lateral grooves substantially parallel to the bore axis and open toward said insertion end, said housing being further provided with two aligned slots transverse to said axis extending from opposite outer surfaces of said housing to said bore and intersecting said grooves; and a pair of resilient contact tabs secured to said housing at said outer surfaces and terminating in bent-over extremities yieldably traversing said slots and extending toward said axis across said grooves in the absence of said envelope for conductive engagement with said wire ends upon insertion of said envelope into said bore with said wire ends bent back axially against said envelope and received in said grooves.
Claim 2
Dependent Claim
165 words
A socket for an electric light bUlb having an elongate glass envelope and a pair of wire ends projecting from opposite sides of said envelope, comprising: a housing of insulating material formed with a bore open at an insertion end thereof for receiving said envelope, said bore being provided with a pair of diametrically opposite lateral grooves substantially parallel to the bore axis and open toward said insertion end, said housing being further provided with two aligned slots transverse to said axis extending from opposite outer surfaces of said housing to said bore and intersecting said grooves; and a pair of resilient contact tabs secured to said housing at said outer surfaces and terminating in bent-over extremities yieldably traversing said slots and extending toward said axis across said grooves in the absence of said envelope for conductive engagement with said wire ends upon insertion of said envelope into said bore with said wire ends bent back axially against said envelope and received in said grooves.
Claim 3
Dependent Claim
37 words
A socket as defined in claim 1 wherein said housing is provided at said insertion end with oppositely sloping lands axially spaced from said slots, said lands forming outwardly flared extensions of the bottoms of said grooves.
Claim 4
Dependent Claim
19 words
A socket as defined in claim 2 wherein said lands include with said axis an angle of substantially 45*.
Claim 5
Dependent Claim
20 words
A socket as defined in claim 1 wherein said outer surfaces are provided with axially extending recesses receiving said tabs.
Claim 6
Dependent Claim
38 words
A socket as defined in claim 1 wherein said bore is cylindrical and said extremities are wider than said grooves and have arcuately concave contact edges with a radius of curvature approximately equaling the radius of said bore.
References Cited (Backward Citations)
US3259868A
Cited
US3702455A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |