US4635170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reflector for electric light
Assignee: Spectrum Brands Inc
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Filing: 1985-12-18
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Granted: 1987-01-06
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Expires: 2005-12-18
Abstract
Abstract A reflector for an electric light has a first reflector member with a socket for the light bulb and a second reflector member positioned generally forward of the socket. In one aspect of the invention a first angular segment of the first reflector defines curved reflector means for reflecting light from the light in the socket into a collimated beam. The remaining angular segment of the first reflector defines a transversely directed, curved reflector for focusing light from the light bulb back to the filament in the light bulb to increase the filament temperature. In another aspect of the invention, the first, angular segment of the second reflector member defines a transparent partition, with the partition carrying a plurality of transparent ridges of triangular cross section. The ridges are circumferentially disposed at different radii about an extension of the central axis of the socket. Thus light from the light bulb in the socket is diffracted by the ridges into the collimated beam.
Inventors
- 👤 John L. Beiswenger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:06
CPC Classifications
F; F21; F21V; F21V7/00; F21V7/04; F21V7/09; F21L; F21L2/00
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
97 words
In a reflector for an electric light having a first reflector member defining socket means for carrying a light bulb, and a second reflector member positioned generally forward of said socket means, the improvement comprising in combination: a first angular segment of said first reflector defines curved reflector means for reflecting light from a light bulb in the socket into a collimated beam, the remaining angular segment of said first reflector defining a transversely directed, curved reflector for focusing light from said light bulb back to the filament in said light bulb to increase the filament temperature.
Claim 2
Dependent Claim
97 words
In a reflector for an electric light having a first reflector member defining socket means for carrying a light bulb, and a second reflector member positioned generally forward of said socket means, the improvement comprising in combination: a first angular segment of said first reflector defines curved reflector means for reflecting light from a light bulb in the socket into a collimated beam, the remaining angular segment of said first reflector defining a transversely directed, curved reflector for focusing light from said light bulb back to the filament in said light bulb to increase the filament temperature.
Claim 3
Dependent Claim
30 words
The reflector of claim 1 in which the first angular segment of said first reflector defining curved reflector means is essentially 180°, and said remaining angular segment is essentially 180°.
Claim 4
Dependent Claim
71 words
The reflector of claim 1 in which at least a first, angular segment of said second reflector member defines a transparent partition, said partition carrying a plurality of transparent ridges of triangular cross-section, said ridges being circumferentially disposed at different radii about an extension of the central axis of said socket means, whereby light from a light bulb in said socket means is diffracted by said ridges into said collimated beam.
Claim 5
Dependent Claim
44 words
The reflector of claim 3 in which a second angular segment of said second reflector member also defines a transparent partition, said second segment carrying curved, circumferentially disposed, elongated reflector members positioned to reflect light from said light bulb to join said collimated beam.
Claim 6
Dependent Claim
44 words
The reflector of claim 1 in which said second reflector member defines a transparent partition, and at least an angular segment of said partition carrying curved, circumferentially disposed, elongated reflector members positioned to reflect light from said light bulb to join said collimated beam.
Claim 7
Dependent Claim
35 words
The reflector of claim 1 in which said second reflector member defines a lens positioned about an extension of the central axis of said socket means, to focus centrally directed light into said collimated beam.
Claim 8
Dependent Claim
42 words
The reflector of claim 1 which is carried in a casing, said casing and reflector together having a width that is at least twice as great as its depth, said length being measured generally parallel to the beam of light emitted thereby.
Claim 9
Dependent Claim
80 words
The reflector of claim 1 in which said first reflector member defines, in said first angular segment, a radially inward surface which is substantially flat, positioned to the rear of the center of a light bulb in said socket, and substantially parallel to the nearest paths of light emission from said light bulb, and a radially outer surface from said inner surface which has a generally parabolic, reflective surface to reflect light from said bulb into said substantially parallel beam.
Claim 10
Dependent Claim
62 words
An electric light in accordance with claim 8 in which said reflector is carried by a casing, a bulb positioned within said socket, and means for electrically illuminating said bulb, said reflector being capable of directing into said collimated beam essentially all of the light emitted by said light bulb in a spherical section defined by an arc of at least 220°.
Claim 11
Dependent Claim
25 words
The electric light of claim 9 in which a folding handle is carried on the side of said casing facing away from said collimated beam.
Claim 12
Dependent Claim
177 words
In an electric light which comprises a reflector, a casing, a light bulb socket carrying a light bulb, and means for electrically energizing said light bulb, said electric light having a first reflector member surrounding socket means carrying said light bulb, and a second reflector member positioned generally forward of said socket means, the improvement comprising, in combination: a first angular segment of said first reflector defining curved reflector means for reflecting light from a light bulb in the socket into a collimated beam, the remaining angular segment of said first reflector defining a transversely directed, curved reflector for focusing light from said light bulb back into the filament in said light bulb to increase the filament temperature; at least a first, angular segment of said second reflector defining a transparent partition, said partition carrying a plurality of transparent ridges of triangular cross-section, said ridges being circumferentially disposed at different radii about an extension of the central axis of said socket means, whereby light from said light bulb is diffracted by said ridges into said collimated beam.
Claim 13
Dependent Claim
177 words
In an electric light which comprises a reflector, a casing, a light bulb socket carrying a light bulb, and means for electrically energizing said light bulb, said electric light having a first reflector member surrounding socket means carrying said light bulb, and a second reflector member positioned generally forward of said socket means, the improvement comprising, in combination: a first angular segment of said first reflector defining curved reflector means for reflecting light from a light bulb in the socket into a collimated beam, the remaining angular segment of said first reflector defining a transversely directed, curved reflector for focusing light from said light bulb back into the filament in said light bulb to increase the filament temperature; at least a first, angular segment of said second reflector defining a transparent partition, said partition carrying a plurality of transparent ridges of triangular cross-section, said ridges being circumferentially disposed at different radii about an extension of the central axis of said socket means, whereby light from said light bulb is diffracted by said ridges into said collimated beam.
Claim 14
Dependent Claim
44 words
The reflector of claim 11 in which a second angular segment of said second reflector member also defines a transparent partition, said second segment carrying curved, circumferentially disposed, elongated reflector members positioned to reflect light from said light bulb to join said collimated beam.
Claim 15
Dependent Claim
28 words
The reflector of claim 12 in which said second reflector means defines a lens positioned about said central axis to focus centrally directed light into said collimated beam.
Claim 16
Dependent Claim
39 words
The electric light of claim 13 in which said casing and reflector together have a width that is at least twice at great as its depth, said depth being measured generally parallel to the beam of light emitted thereby.
Claim 17
Dependent Claim
40 words
The electric light of claim 14 in which said reflector is capable of directing into said collimated beam essentially all of the light emitted by said light bulb in a spherical section defined by an arc of at least 220°.
Claim 18
Dependent Claim
46 words
The electric light of claim 15 in which said second reflector member is an integrally molded, transparent plastic sheet, said curved, circumferentially disposed, elongated reflector members projecting inwardly from said plastic sheet and carrying a reflective surface coating, said transparent ridges of triangular cross-section projecting outwardly.
Claim 19
Dependent Claim
29 words
The electric light of claim 16 in which the first and second angular segments of said second reflector member each occupy essentially 140° to 210° about said central axis.
Claim 20
Dependent Claim
101 words
In a reflector for an electric light having a first reflector member defining socket means for carrying a light bulb, and a second reflector member positioned generally forward of said socket means, the improvement comprising, in combination; at least a first angular segment of said second reflector member defining a transparent partition, said partition carrying a plurality of transparent ridges of triangular cross-section, said ridges being circumferentially disposed at different radii about an extension of the central axis of said socket means, whereby light from a light bulb in said socket means is diffracted by said ridges into a collimated beam.
Claim 21
Dependent Claim
101 words
In a reflector for an electric light having a first reflector member defining socket means for carrying a light bulb, and a second reflector member positioned generally forward of said socket means, the improvement comprising, in combination; at least a first angular segment of said second reflector member defining a transparent partition, said partition carrying a plurality of transparent ridges of triangular cross-section, said ridges being circumferentially disposed at different radii about an extension of the central axis of said socket means, whereby light from a light bulb in said socket means is diffracted by said ridges into a collimated beam.
Claim 22
Dependent Claim
44 words
The reflector of claim 18 in which a second angular segment of said second reflector member also defines a transparent partition, said second segment carrying curved, circumferentially disposed, elongated reflector members positioned to reflect light from said light bulb to join said collimated beam.
Claim 23
Dependent Claim
28 words
The reflector of claim 19 in which said second reflector means defines a lens positioned about said central axis to focus centrally directed light into said collimated beam.
Claim 24
Dependent Claim
41 words
An electric light which comprises a casing, the reflector of claim 20, and means for electrically illuminating a light bulb in said socket, said reflector and casing together defining a width that is at least twice as great as its depth.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-01-05 | 1990-07-07 | 1991-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-05 | 1994-07-07 | 1995-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-05 | 1998-07-07 | 1999-01-06 | $7700.00 | Window Closed / Lapsed |