US4860180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grid suspension system for fluorescent troffers
Assignee: Cooper Technologies Co
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Filing: 1988-02-04
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Granted: 1989-08-22
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Expires: 2008-02-04
Abstract
Abstract A troffer for fluorescent lights, including a stabilizer system, the troffer for fluorescent lights in the present invention includes a stabilizer system to prevent the outward bending of fuel and suspension runners or stringers. The stabilizer system has a first vertical plate member attached to the fluorescent troffer, a slotted bridge member eminating perpendicularly from the first vertical plate member and a second vertical plate member extending perpendicularly from the slotted bridge member. The second vertical plate member includes a fastener which is threaded through the vertical plate member to contact the runner or stringer.
Inventors
- 👤 Paul G. Degelmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:42
CPC Classifications
F; F21; F21V; F21V21/00; F21V21/02; F21V21/04; E; E04; E04B; E04B9/00; E04B9/006; F21S; F21S8/00; F21S8/02; F21Y; F21Y2103/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
110 words
A troffer for fluorescent lights including a stabilizer system comprising: a first substantially vertical plate member including a threaded fastener for mechanically attaching said first substantially vertical plate member to the troffer; a bridge member formed substantially perpendicular to said first substantially vertical plate member, said bridge member including a slot constructed and arranged to fit over a runner or stringer used in a suspended ceiling and physically contact the side of said runner or stringer closest to said first substantially vertical plate member; a second substantially vertical plate member including a threaded fastener for engaging the side of said runner or stringer opposite the side contacted by said slot.
Claim 2
Dependent Claim
110 words
A troffer for fluorescent lights including a stabilizer system comprising: a first substantially vertical plate member including a threaded fastener for mechanically attaching said first substantially vertical plate member to the troffer; a bridge member formed substantially perpendicular to said first substantially vertical plate member, said bridge member including a slot constructed and arranged to fit over a runner or stringer used in a suspended ceiling and physically contact the side of said runner or stringer closest to said first substantially vertical plate member; a second substantially vertical plate member including a threaded fastener for engaging the side of said runner or stringer opposite the side contacted by said slot.
Claim 3
Dependent Claim
27 words
The troffer as defined in claim 1 wherein said first substantially vertical plate member, said bridge member and said second substantially vertical plate member are formed integrally.
Claim 4
Dependent Claim
103 words
A lighting system for mounting in a suspended ceiling of runners or stringers comprising: a fluorescent troffer; a first substantially vertical plate member including a threaded fastener for mechanically attaching said first substantially vertical plate member to said fluorescent troffer; a bridge member formed substantially perpendicular to said first substantially vertical plate member, said bridge member including a slot constructed and arranged to fit over the runners or stringers and physically contact the side of the runner or stringer closest to said first substantially vertical plate member; a second substantially vertical plate member including a threaded fastener for contacting said runner or stringer.
Claim 5
Dependent Claim
103 words
A lighting system for mounting in a suspended ceiling of runners or stringers comprising: a fluorescent troffer; a first substantially vertical plate member including a threaded fastener for mechanically attaching said first substantially vertical plate member to said fluorescent troffer; a bridge member formed substantially perpendicular to said first substantially vertical plate member, said bridge member including a slot constructed and arranged to fit over the runners or stringers and physically contact the side of the runner or stringer closest to said first substantially vertical plate member; a second substantially vertical plate member including a threaded fastener for contacting said runner or stringer.
Claim 6
Dependent Claim
27 words
The system as defined in claim 3 wherein said first substantially vertical plate member, said bridge member and said second substantially vertical plate member are formed integrally.
Claim 7
Independent Claim
129 words
A method of stabilizing a fluorescent troffer in a suspended ceiling having runners or stringers, said method comprising the steps of: affixing a first substantially vertical plate member to the side of a fluorescent troffer with a threaded fastener; connecting said first substantially vertical plate member to a bridge member, said bridge member formed substantially perpendicular to said first substantially vertical plate member, said bridge member including a slot constructed and arranged to fit over the runners or stringers and physically contact the side of the runner or stringer closest to said first substantially vertical plate member; connecting said bridge member to a second substantially vertical plate member, said second substantially vertical plate member further including a threaded fastener for engaging the opposite side of said runner or stringer.
Claim 8
Independent Claim
129 words
A method of stabilizing a fluorescent troffer in a suspended ceiling having runners or stringers, said method comprising the steps of: affixing a first substantially vertical plate member to the side of a fluorescent troffer with a threaded fastener; connecting said first substantially vertical plate member to a bridge member, said bridge member formed substantially perpendicular to said first substantially vertical plate member, said bridge member including a slot constructed and arranged to fit over the runners or stringers and physically contact the side of the runner or stringer closest to said first substantially vertical plate member; connecting said bridge member to a second substantially vertical plate member, said second substantially vertical plate member further including a threaded fastener for engaging the opposite side of said runner or stringer.
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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) | 1992-08-21 | 1993-02-20 | 1993-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-21 | 1997-02-20 | 1997-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-21 | 2001-02-20 | 2001-08-22 | $7700.00 | Window Closed / Lapsed |