US4612606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for indirect lighting of stairs
Assignee: Individual
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Filing: 1985-04-01
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Granted: 1986-09-16
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Expires: 2005-04-01
Abstract
Abstract An apparatus in the form of a stair nosing formation that is particularly adapted to provide an overhang for housing an indirect lighting source thereby to provide both functional and aesthetically appealing effects. The formation consists of a tread plate in perpendicular affixure to a riser plate while extending an overhang portion that is further formed into an overhang plate disposed parallel to the riser plate. A transverse plate is formed to extend between the overhang plate and riser plate to provide high structural strength while also defining a downwardly oriented channel for retention of an illumination source for directing light downward along the adjacent step riser toward the next lower step tread.
Inventors
- 👤 James R. Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:36
CPC Classifications
F; F21; F21S; F21S8/00; E; E04; E04F; E04F11/00; E04F11/02; E04F11/104; E04F2011/1046; E04F2011/1048; F21Y; F21Y2103/00
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
103 words
Apparatus for use in indirect lighting of step treads, comprising: first plate means for secure placement on at least the forward part of a step tread portion and extending a further forward edge beyond the step riser portion by a predetermined distance; second plate means connected to said first plate means to extend for placement against the step riser portion immediately beneath said first plate means; and overhang plate means connected to extend from said first plate means forward edge parallel to said second plate means thereby to define a channel that is open in the direction generally parallel to said step riser.
Claim 2
Dependent Claim
103 words
Apparatus for use in indirect lighting of step treads, comprising: first plate means for secure placement on at least the forward part of a step tread portion and extending a further forward edge beyond the step riser portion by a predetermined distance; second plate means connected to said first plate means to extend for placement against the step riser portion immediately beneath said first plate means; and overhang plate means connected to extend from said first plate means forward edge parallel to said second plate means thereby to define a channel that is open in the direction generally parallel to said step riser.
Claim 3
Dependent Claim
23 words
Apparatus as set forth in claim 1 wherein: said first plate means, second plate means and overhang plate means are a unitary formation.
Claim 4
Dependent Claim
14 words
Apparatus as set forth in claim 2 wherein: said unitary formation is extruded metal.
Claim 5
Dependent Claim
39 words
Apparatus as set forth in claim 1 which further includes: transverse plate means extending generally perpendicularly between said overhang plate means and second plate means at a position generally bisecting said overhang plate means thereby defining said channel therebeneath.
Claim 6
Dependent Claim
26 words
Apparatus as set forth in claim 4 wherein: said first plate means, second plate means, overhang plate means and transverse plate means are a unitary formation.
Claim 7
Dependent Claim
14 words
Apparatus as set forth in claim 5 wherein: said unitary formation is extruded metal.
Claim 8
Dependent Claim
35 words
Apparatus as set forth in claim 4 which further includes: channel means disposed on said transverse means spaced from each of said second and overhang plate means and open downward along the adjacent step riser.
Claim 9
Dependent Claim
21 words
Apparatus as set forth in claim 4 which further comprises: low voltage light tubing means secured beneath said transverse plate means.
Claim 10
Dependent Claim
20 words
Apparatus as set forth in claim 7 which further comprises: low voltage light tubing means secured within said channel means.
Claim 11
Dependent Claim
33 words
Apparatus as set forth in claim 7 wherein: said space on said transverse plate means on each side of said channel means is sufficient to allow termination of first and second carpet ends.
Claim 12
Dependent Claim
120 words
Apparatus for housing light tubing in order to provide indirect lighting of step treads, comprising: stair nosing structure formed to include a tread plate having front and rear edges and a riser plate connected intermediate thereto between said front and rear edges and disposed at right angles said structure being adapted for placement in contact with a respective step tread and riser, and overhang plate means connected to extend from the front edge of the tread plate generally in parallel to said riser plate and spaced therefrom thereby to define a downwardly open channel for receiving said light tubing; and means for securing said tread plate and riser plate in placement in contact with said respective step tread and riser.
Claim 13
Dependent Claim
120 words
Apparatus for housing light tubing in order to provide indirect lighting of step treads, comprising: stair nosing structure formed to include a tread plate having front and rear edges and a riser plate connected intermediate thereto between said front and rear edges and disposed at right angles said structure being adapted for placement in contact with a respective step tread and riser, and overhang plate means connected to extend from the front edge of the tread plate generally in parallel to said riser plate and spaced therefrom thereby to define a downwardly open channel for receiving said light tubing; and means for securing said tread plate and riser plate in placement in contact with said respective step tread and riser.
Claim 14
Dependent Claim
43 words
Apparatus as set forth in claim 11 wherein said stair nosing structure further includes: a transverse plate affixed parallel to said tread plate and extending generally perpendicularly between said riser plate and overhang plate to form a base for said downward facing channel.
Claim 15
Dependent Claim
17 words
Apparatus as set forth in claim 12 wherein: said stair nosing structure is a unitary metal extrusion.
Claim 16
Dependent Claim
39 words
Apparatus as set forth in claim 12 wherein: said transverse plate is of a width sufficient to accommodate the carpet and pile terminus for each of the step tread and riser with remaining space therebetween for light tubing structure.
Claim 17
Dependent Claim
28 words
Apparatus as set forth in claim 14 wherein said light tubing structure comprises: U-shaped channel means secured centrally to said transverse plate and open downward along the riser.
Claim 18
Independent Claim
131 words
An apparatus for indirect lighting of steps having riser and tread, the combination comprising: a stair nosing structure formed to include a tread plate having front and rear edges and riser plate connected thereto at right angles at a position intermediate said front and rear edges for placement against each of a respective step tread and riser, and having an overhang plate means disposed to extend from the front edge of the tread plate generally in parallel to said riser plate and spaced thereform to define a downwardly open channel; means for securing said tread plate and riser plate in placement against each of a respective step tread and step riser; and light tubing means secured within said downwardly open channel, and energizable to illuminate a respective step riser and tread.
Claim 19
Independent Claim
131 words
An apparatus for indirect lighting of steps having riser and tread, the combination comprising: a stair nosing structure formed to include a tread plate having front and rear edges and riser plate connected thereto at right angles at a position intermediate said front and rear edges for placement against each of a respective step tread and riser, and having an overhang plate means disposed to extend from the front edge of the tread plate generally in parallel to said riser plate and spaced thereform to define a downwardly open channel; means for securing said tread plate and riser plate in placement against each of a respective step tread and step riser; and light tubing means secured within said downwardly open channel, and energizable to illuminate a respective step riser and tread.
Claim 20
Dependent Claim
41 words
Apparatus as set forth in claim 16 wherein said stair nosing structure further includes: a transverse plate affixed parallel to said tread plate and extending between said riser plate and overhang plate to form the base of said downward facing channel.
Claim 21
Dependent Claim
17 words
Apparatus as set forth in claim 17 wherein: said stair nosing structure is a unitary metal extrusion.
Claim 22
Dependent Claim
39 words
Apparatus as set forth in claim 18 wherein: said transverse plate is of a width sufficient to accommodate the carpet and pile terminus for each of the step tread and riser with remaining space therebetween for light tubing structure.
Claim 23
Dependent Claim
36 words
Apparatus as set forth in claim 19 wherein said light tubing structure further comprises: U-shaped channel means secured centrally to said transverse plate and open downward along the riser for receiving said light tubing means therein.
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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) | 1989-09-15 | 1990-03-17 | 1990-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-15 | 1994-03-17 | 1994-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-15 | 1998-03-17 | 1998-09-16 | $7700.00 | Window Closed / Lapsed |