US4570207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Luminous indicating device
Assignee: SHO-BOND CONSTRUCTION COMPANY Ltd
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Filing: 1984-11-08
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Granted: 1986-02-11
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Expires: 2004-11-08
Abstract
Abstract A luminous indicating device and comprising at least one luminous block adapted to be buried in a road surface so that a radiating surface thereof is flush with the road surface. The luminous block is formed of a composite material block and at least one luminous element which is formed of a transparent material block and a light source buried at one end portion of the block to radiate light from the other end surface of the block. The luminous block is buried in the composite material block so that the other end surface of said transparent material block is flush with a top surface of the composite material block.
Inventors
- 👤 Hisae Takahashi
- 👤 Tatsuro Yoshinaga
- 👤 Akio Mitomo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:10
CPC Classifications
E; E01; E01F; E01F9/00; E01F9/50; E01F9/576; E01F9/582; E01F9/20; E01F9/506; E01F9/512; E01F9/535; E01F9/547; E01F9/553; E01F9/559; Y; Y10; Y10S; Y10S362/00; Y10S362/80
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
155 words
A luminous indicating device comprising at least one luminous block which is adapted to be buried in a road surface so that an upper radiating surface thereof is flush with the road surface, said luminous block being formed as an abradable composite material block including at least one luminous element formed of an abradable light passable material block, at least one high intensity light emitting diode disposed at one end surface of the light passable material block for radiating light through the other end surface of the light passable material block, said light passable material block being disposed in said composite material block so that the other end surface of the light passage material block is disposed flush with a top surface of said composite material block, and wherein said light passable material block is made of an acrylic resin or vinyl chloride resin and said composite material block is made of a resin mortar.
Claim 2
Dependent Claim
155 words
A luminous indicating device comprising at least one luminous block which is adapted to be buried in a road surface so that an upper radiating surface thereof is flush with the road surface, said luminous block being formed as an abradable composite material block including at least one luminous element formed of an abradable light passable material block, at least one high intensity light emitting diode disposed at one end surface of the light passable material block for radiating light through the other end surface of the light passable material block, said light passable material block being disposed in said composite material block so that the other end surface of the light passage material block is disposed flush with a top surface of said composite material block, and wherein said light passable material block is made of an acrylic resin or vinyl chloride resin and said composite material block is made of a resin mortar.
Claim 3
Dependent Claim
95 words
A luminous indicating device according to claim 1, wherein a plurality of luminous elements are disposed, said luminous block, with each luminous element including at least one high intensity light emitting diode, and wherein said luminous block further includes a printed wiring board means for simultaneously supplying power to said light emitting diodes, said printed wiring board means being connected to lead wires of each of said light emitting diodes, and mounting means for fixing said luminous block in place, said mounting means serving as electrodes to be connected to said printed wiring board means.
Claim 4
Dependent Claim
16 words
A luminous indicating device according to claim 1, wherein said resin is an epoxy type resin.
Claim 5
Dependent Claim
39 words
A luminous indicating device according to claim 1, wherein a degree of wear of the light passable material block and the composite material block is substantially equal to a degree of wear of a material forming the road surface.
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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) | 1989-02-10 | 1989-08-12 | 1990-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-10 | 1993-08-12 | 1994-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-10 | 1997-08-12 | 1998-02-11 | $7700.00 | Window Closed / Lapsed |