Patent US4108406A successfully refreshed from Google Patents.
US4108406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rail car safety reflector
Assignee: Individual
•
Filing: 1978-01-16
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Granted: 1978-08-22
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Expires: 1998-01-16
Abstract
Abstract A passively-actuated visual warning reflector device for providing a "flashing", oscillating, or fluctuating visual signal, the invention is readily adapted to be mounted to a moving vehicle, particularly the side of a train car, to warn of the presence of the vehicle at route intersections and crossings. The present reflector device is comprised of a reflective or luminous substrate member attached to a surface of either a vehicle or a stationary structure, an apertured disk member being mounted in superimposed relation to the reflective member for swinging movement relative thereto, thereby partially obscuring varying portions of the reflective member on movement of the disk member to provide the effect of an "on-off" light signal. The disk member is provided with circumferential flanges which catch air currents and cause the disk member to swing relative to the reflective member.
Inventors
- 👤 David M. Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:47
CPC Classifications
B; B61; B61L; B61L15/00; B61L15/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
137 words
A passive visual warning device adapted to be mounted to a surface, comprising: means mounted on the surface for directing light therefrom; an arm member; bracket means mounted on the surface in surmounting relation to the first-mentioned means for mounting the arm member at one end thereof for swinging movement relative to the first-mentioned means; a cover member mounted on a free end of the arm member and disposed in superimposed relation to the first-mentioned means, the cover member at least partially occluding the first-mentioned means in at least certain positions relative thereto during swinging movement of the arm member and thus the cover member relative to said first-mentioned means; and, means mounted on the cover member for catching air currents to cause the arm member and the cover member to swing relative to the first-mentioned means.
Claim 2
Dependent Claim
137 words
A passive visual warning device adapted to be mounted to a surface, comprising: means mounted on the surface for directing light therefrom; an arm member; bracket means mounted on the surface in surmounting relation to the first-mentioned means for mounting the arm member at one end thereof for swinging movement relative to the first-mentioned means; a cover member mounted on a free end of the arm member and disposed in superimposed relation to the first-mentioned means, the cover member at least partially occluding the first-mentioned means in at least certain positions relative thereto during swinging movement of the arm member and thus the cover member relative to said first-mentioned means; and, means mounted on the cover member for catching air currents to cause the arm member and the cover member to swing relative to the first-mentioned means.
Claim 3
Dependent Claim
37 words
The device of claim 1 wherein the cover member has an aperture disposed therein, the first-mentioned means being at least partially visible through the cover member on full superimposition of said cover member on said first-mentioned means.
Claim 4
Dependent Claim
35 words
The device of claim 2 wherein the cover member is circular and the aperture is centrally disposed therein, the last-mentioned means comprising annular flange members disposed about inner and outer peripheries of the cover member.
Claim 5
Dependent Claim
14 words
The device of claim 1 wherein the first-mentioned means comprises a light reflective member.
Claim 6
Dependent Claim
13 words
The device of claim 1 wherein the first-mentioned means comprises a luminous member.
Claim 7
Dependent Claim
20 words
The device of claim 1 wherein the last-mentioned means comprises at least one flange member disposed on the cover member.
Claim 8
Dependent Claim
26 words
The device of claim 1 and further comprising a plate member extending from the first-mentioned means for providing a surface on which commercial messages are disposed.
Claim 9
Dependent Claim
84 words
The device of claim 1 wherein the arm member is provided with end portions angled with respect to the major body portion of the arm member, the planes in which the end portions lie being substantially parallel to each other, one end portion of the arm member being mounted by the bracket means and the other end portion having the cover member mounted thereto, the cover member thereby being caused to be disposed outwardly of the surface in surmounting relation to the first-mentioned means.
References Cited (Backward Citations)
US1955966A
Cited
US2925584A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-08-21 | 1982-02-20 | 1982-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-21 | 1986-02-20 | 1986-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-21 | 1990-02-20 | 1990-08-22 | $7700.00 | Window Closed / Lapsed |