Patent US4428034A successfully refreshed from Google Patents.
US4428034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light bulb mounting unit
Assignee: TILDAWN ELECTRONICS Ltd
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Filing: 1982-12-14
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Granted: 1984-01-24
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Expires: 2002-12-14
Abstract
Abstract A lamp comprises a battery housing (60), a lens body (70) rotatably connected to the housing (60) and a bulb holder unit (10) which is rotatably fast with the lens body (70) in the assembled lamp. The bulb holder unit (10) is produced as a plastics moulding and is provided with terminals (38,58) which are so arranged with respect to the battery terminals (62, 64) that the lamp can be switched on and off by rotation of the lens body (70).
Inventors
- 👤 Anthony J. Seller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:17
CPC Classifications
F; F21; F21L; F21L2/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
178 words
A lamp comprising a housing for reception of a battery, and a lens body mounted on the housing for rotation relative thereto, wherein the improvement comprises a bulb holder unit comprising a main body which is rotatably fast with the lens body, a bulb-holding sleeve which is open at both ends and is integrally united with the main body as a single plastics molding, a first contact mounted opposite to one end of said sleeve in position to be engaged by the base of a bulb inserted in the other end of said sleeve, and a second contact extending within the side of said sleeve, said main body having a base provided with two bottom terminals one of which is central, the other of which is offset and each of which is connected to a different one of said contacts, said terminals being arranged to cooperate with central and offset terminals of a battery in said housing, to permit the lamp to be switched on and off by rotation of the lens body relative to the battery housing.
Claim 2
Dependent Claim
178 words
A lamp comprising a housing for reception of a battery, and a lens body mounted on the housing for rotation relative thereto, wherein the improvement comprises a bulb holder unit comprising a main body which is rotatably fast with the lens body, a bulb-holding sleeve which is open at both ends and is integrally united with the main body as a single plastics molding, a first contact mounted opposite to one end of said sleeve in position to be engaged by the base of a bulb inserted in the other end of said sleeve, and a second contact extending within the side of said sleeve, said main body having a base provided with two bottom terminals one of which is central, the other of which is offset and each of which is connected to a different one of said contacts, said terminals being arranged to cooperate with central and offset terminals of a battery in said housing, to permit the lamp to be switched on and off by rotation of the lens body relative to the battery housing.
Claim 3
Dependent Claim
37 words
A lamp as claimed in claim 1 in which said first contact is resilient and extends in cantilever fashion in position to be engaged and resiliently deflected by the base of a bulb inserted in the sleeve.
Claim 4
Dependent Claim
128 words
In a bulb holder unit for incorporation in a lamp, a main body, a bulb-holding sleeve which is open at both ends and is integrally united with the main body as a single plastics molding, a first contact mounted opposite to one end of said sleeve in position to be engaged by the base of a bulb inserted in the other end of said sleeve, and a second contact extending within the side of said sleeve, said main body having a base provided with two bottom terminals one of which is central, the other of which is offset and each of which is connected to a different one of said contacts, said terminals being arranged to cooperate with central and offset terminals of a battery in said lamp.
Claim 5
Dependent Claim
128 words
In a bulb holder unit for incorporation in a lamp, a main body, a bulb-holding sleeve which is open at both ends and is integrally united with the main body as a single plastics molding, a first contact mounted opposite to one end of said sleeve in position to be engaged by the base of a bulb inserted in the other end of said sleeve, and a second contact extending within the side of said sleeve, said main body having a base provided with two bottom terminals one of which is central, the other of which is offset and each of which is connected to a different one of said contacts, said terminals being arranged to cooperate with central and offset terminals of a battery in said lamp.
Claim 6
Dependent Claim
28 words
In a bulb holder unit as claimed in claim 3, a stem integral with said main body and said sleeve which spaces the sleeve from the main body.
Claim 7
Dependent Claim
39 words
In a bulb holder unit as claimed in claim 3, a first contact which is resilient and extends in cantilever fashion in position to be engaged and resiliently deflected by the base of a bulb inserted in the sleeve.
Claim 8
Dependent Claim
26 words
In a bulb holder unit as claimed in claim 3, a second contact extending through the sleeve which is clamped between the bulb and the sleeve.
Claim 9
Dependent Claim
22 words
In a bulb holder unit as claimed in claim 3, slots in the sleeve which provide a bayonet connection with the bulb.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-01-23 | 1987-07-25 | 1988-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-23 | 1991-07-25 | 1992-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-23 | 1995-07-25 | 1996-01-24 | $7700.00 | Window Closed / Lapsed |