US3883734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bulbholders
Assignee: Carello Lighting PLC
•
Filing: 1973-12-12
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Granted: 1975-05-13
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Expires: 1993-12-12
Abstract
Abstract A bulbholder comprises a cylindrical body open at both ends and formed integrally with a lamp reflector. The body is formed internally with recesses to receive, in bayonet fashion, a bulb. A compression spring locates the bulb in the recess and is supported in the body thereof, in one embodiment, by a hooked extension of the spring which engages with a rim formed in the body adjacent the bulb receiving end thereof. In another embodiment, the extension of the spring is secured to the body by a rivet which also secures an electrical terminal thereto.
Inventors
- 👤 John Richard Lincoln Joiner
- 👤 Alan John Covel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:30
CPC Classifications
H; H01; H01R; H01R33/00; H01R33/05; H01R33/46
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
95 words
A bulbholder comprising a tubular body open at both ends, opposed recesses and shoulders in said body for receiving, in bayonet fashion, a bulb when passed into said body via one of the open ends thereof, said tubular body being internally tapered inwardly towards said one of the open ends, a compression spring disposed in said body and arranged to urge said bulb, in use, against said shoulders, and an extension of said compression spring engaging the body so as to prevent said compression spring from passing through the other open end of said body.
Claim 2
Dependent Claim
95 words
A bulbholder comprising a tubular body open at both ends, opposed recesses and shoulders in said body for receiving, in bayonet fashion, a bulb when passed into said body via one of the open ends thereof, said tubular body being internally tapered inwardly towards said one of the open ends, a compression spring disposed in said body and arranged to urge said bulb, in use, against said shoulders, and an extension of said compression spring engaging the body so as to prevent said compression spring from passing through the other open end of said body.
Claim 3
Dependent Claim
17 words
A bulbholder as claimed in claim 1, wherein the body is formed integrally with a lamp reflector.
Claim 4
Dependent Claim
43 words
A bulbholder as claimed in claim 1, wherein said extension comprises an outwardly turned end portion of the spring adjacent the said other open end of the body, said outwardly turned end portion being engaged with the body adjacent said open end thereof.
Claim 5
Dependent Claim
60 words
A bulbholder as claimed in claim 3 wherein said end portion terminates in an outwardly directed hook, said turned back end portion extending from the end of the spring adjacent said other open end of the body in a direction towards said one open end so that the hook engages a rim of the body around said one end thereof.
Claim 6
Dependent Claim
24 words
A bulbholder as claimed in claim 3, wherein said end portion terminates in a portion which is secured to the body by securing means.
Claim 7
Dependent Claim
14 words
A bulbholder as claimed in claim 5, wherein said securing means is a rivet.
Claim 8
Dependent Claim
22 words
A bulbholder as claimed in claim 5, wherein the securing means also secures an electrical terminal to the exterior of the body.
References Cited (Backward Citations)
US900426A
Cited
US959205A
Cited
US2443743A
Cited
US3040285A
Cited
US3206708A
Cited
US3569907A
Cited
US3718892A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |