US4520435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Orientable refractor mounting
Assignee: General Electric Co
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Filing: 1983-11-04
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Granted: 1985-05-28
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Expires: 2003-11-04
Abstract
Abstract A polycarbonate orientable refractor for a luminaire comprises a mounting ring which has a collar portion fitting a neck portion of the refractor with matching diameters. A diametric interference is provided between a groove in one part and a mating ridge in the other part to an extent allowing a snap fit. Shallow interfering ribs and valleys in the mating surfaces controllably lock the parts together while allowing angular indexing for orienting the light distribution pattern of the refractor.
Inventors
- 👤 Samuel L. Baldwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:50
CPC Classifications
F; F21; F21S; F21S8/00; F21S8/03; F21S8/033; F21V; F21V14/00; F21V14/06; F21V17/00; F21V17/10; F21V17/14; F21V15/00; F21V17/16; F21V17/164; F21V23/00; F21V23/04; F21V23/0442; F21V3/00; F21V3/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
98 words
An optical control appliance in the nature of a refractor or reflector adapted to surround at least in part the light source in a luminaire and mounting means therefor comprising: a cylindrical neck portion on said appliance, a mounting ring having a collar portion fitting said neck portion with matching diameters, a mating ridge and groove, one on the collar portion and the other on the neck portion, said ridge causing diametric interference with the portion next to the groove to an extent allowing a snap fit, and attachment means on said ring for engaging a luminaire housing.
Claim 2
Dependent Claim
98 words
An optical control appliance in the nature of a refractor or reflector adapted to surround at least in part the light source in a luminaire and mounting means therefor comprising: a cylindrical neck portion on said appliance, a mounting ring having a collar portion fitting said neck portion with matching diameters, a mating ridge and groove, one on the collar portion and the other on the neck portion, said ridge causing diametric interference with the portion next to the groove to an extent allowing a snap fit, and attachment means on said ring for engaging a luminaire housing.
Claim 3
Dependent Claim
29 words
An optical control appliance and mounting means therefor as in claim 1 wherein said mounting ring has a dependent collar which fits inside the neck portion of the appliance.
Claim 4
Dependent Claim
34 words
An optical control appliance and mounting means therefor as in claim 2 wherein the ridge is on the outside of the collar while the mating groove is on the inside of the neck portion.
Claim 5
Dependent Claim
42 words
An optical control appliance and mounting means therefor as in claim 1 or 3 wherein there are shallow interengaging radial protuberances and depressions as between collar portion and neck portion providing controlled resistance to rotation of the appliance relative to the ring.
Claim 6
Dependent Claim
38 words
An optical control appliance and mounting means therefor as in claim 1 wherein said attachment means comprise a plurality of vertical tabs having feet portions disposed to penetrate and engage slotted apertures in the bottom of the housing.
Claim 7
Dependent Claim
23 words
An optical control appliance and mounting means therefor as in claim 3 wherein said appliance is a thin-walled refractor of a light-transmitting plastic.
Claim 8
Dependent Claim
18 words
An optical control appliance and mounting means therefor as in claim 6 wherein said plastic is a polycarboante.
References Cited (Backward Citations)
US3461283A
Cited
US4388681A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-27 | 1988-11-26 | 1989-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-27 | 1992-11-26 | 1993-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-27 | 1996-11-26 | 1997-05-28 | $7700.00 | Window Closed / Lapsed |