US4410933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Luminaire trunnion degree marker and reset stop
Assignee: General Electric Co
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Filing: 1981-09-21
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Granted: 1983-10-18
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Expires: 2001-09-21
Abstract
Abstract A trunnion degree marker and reset stop for a luminaire indicating the angle of aim and providing a positive stop to facilitate resetting after service. It comprises a flat plate having a trunnion bolt hole, an arcuate slot around it with angle markings, and a screw extending therethrough for locking the plate to the trunnion bracket independently of the trunnion bolt. The plate has a foot protruding at an angle and turned toward the housing for engaging a shoulder stop cast as an integral part of the housing.
Inventors
- 👤 Walter R. Blake
- 👤 Jerry R. Plemmons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:06
CPC Classifications
F; F16; F16M; F16M11/00; F16M11/02; F16M11/04; F16M11/06; F16M11/10; F21; F21V; F21V21/00; F21V21/14; F21V21/30; F16M2200/00; F16M2200/02; F16M2200/021; F16M2200/022
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
184 words
In combination: a luminaire comprising a housing containing means for accommodating an electric lamp and an optical assembly producing a beam of light when the lamp is energized, a trunnion bracket and trunnion bolts for mounting the luminaire in a pivotable manner on a support structure, a degree marker and reset stop device to facilitate aiming said luminaire and resetting it to its original aim after it has been tilted for service, comprising a flat plate having a short foot projecting therefrom, the plate having a hole therein, an arcuate slot surrounding the hole, said plate being mounted against the trunnion with one of the trunnion bolts extending through the hole, and a screw extending through the slot for locking the plate to the trunnion bracket independently of the trunnion bolt, and a stop on the housing for engagement by said foot when a luminaire is aimed and the device is fast against it, loosening of the trunnion bolts thereafter allowing the housing to be tilted for service and then reset to its original aim by bringing the shoulder stop home against said foot.
Claim 2
Dependent Claim
184 words
In combination: a luminaire comprising a housing containing means for accommodating an electric lamp and an optical assembly producing a beam of light when the lamp is energized, a trunnion bracket and trunnion bolts for mounting the luminaire in a pivotable manner on a support structure, a degree marker and reset stop device to facilitate aiming said luminaire and resetting it to its original aim after it has been tilted for service, comprising a flat plate having a short foot projecting therefrom, the plate having a hole therein, an arcuate slot surrounding the hole, said plate being mounted against the trunnion with one of the trunnion bolts extending through the hole, and a screw extending through the slot for locking the plate to the trunnion bracket independently of the trunnion bolt, and a stop on the housing for engagement by said foot when a luminaire is aimed and the device is fast against it, loosening of the trunnion bolts thereafter allowing the housing to be tilted for service and then reset to its original aim by bringing the shoulder stop home against said foot.
Claim 3
Dependent Claim
25 words
The combination of claim 1 wherein said foot protrudes at an angle from said plate and is turned toward said housing for engaging said stop.
Claim 4
Dependent Claim
46 words
The combination of claim 1 wherein said foot protrudes at an angle from said plate and is turned toward said housing for engaging said stop, and said stop is a shoulder stop cast as an integral part of the housing and barely protruding beyond its confines.
Claim 5
Dependent Claim
22 words
The combination of claim 1 including angle markings in said plate extending along said slot to indicate the aim of said laminaire.
References Cited (Backward Citations)
US1915967A
Cited
US2166394A
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US3505515A
Cited
US3476925A
Cited
US4143413A
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US4379321A
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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) | 1986-10-17 | 1987-04-18 | 1987-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-17 | 1991-04-18 | 1991-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-17 | 1995-04-18 | 1995-10-18 | $7700.00 | Window Closed / Lapsed |