US4700278A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molded plastic bracket for lamp receptacle
Assignee: Hitachi Rail STS USA Inc
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Filing: 1985-12-19
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Granted: 1987-10-13
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Expires: 2005-12-19
Abstract
Abstract A railway light signal having a pair of lenses carried by a frame member and having a lamp receptacle including a one-piece molded plastic bracket having a flat top surface upon which is mounted a pair of lamp sockets and light bulbs, having a pair of laterally extending flanges which are screw-mounted to the frame, and having an apertured depending rear wall for accommodating a pair of terminal posts which supply power to the pair of lamp sockets for illuminating the light bulbs.
Inventors
- 👤 James P. Chew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:04
CPC Classifications
F; F21; F21V; F21V19/00; F21V19/006; F21V5/00; F21V5/008; F21V17/00; F21V17/10; F21V17/12; F21W; F21W2111/00; F21W2111/02; F21Y; F21Y2113/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
122 words
A molded plastic bracket for a dual-lamp receptacle of a light signal comprising, a body portion having a horizontal lamp-supporting portion including a pair of openings for accommodating a pair of lamp holders, a front flange portion being connectable to an inner peripheral edge of a frame member of the light signal, a rear flange portion for accepting a pair of conductive square-headed binding posts which supply power to the pair of lamp holders for causing the illumination of a pair of lamps, said rearward portion includes a pair of holes for receiving said pair of conductive square-headed binding posts, and a pair of flat side walls are formed between said pair of holes to prevent the square-headed binding posts from turning.
Claim 2
Dependent Claim
122 words
A molded plastic bracket for a dual-lamp receptacle of a light signal comprising, a body portion having a horizontal lamp-supporting portion including a pair of openings for accommodating a pair of lamp holders, a front flange portion being connectable to an inner peripheral edge of a frame member of the light signal, a rear flange portion for accepting a pair of conductive square-headed binding posts which supply power to the pair of lamp holders for causing the illumination of a pair of lamps, said rearward portion includes a pair of holes for receiving said pair of conductive square-headed binding posts, and a pair of flat side walls are formed between said pair of holes to prevent the square-headed binding posts from turning.
Claim 3
Dependent Claim
60 words
The molded plastic bracket, as defined in claim 1, wherein said frontal flange portion includes a pair of holes for accommodating a pair of screws for securing the bracket to said frame member, said frontal flange portion being constructed in such a manner that a lens system may be removed for maintenance, without disturbing or removing said molded plastic bracket.
Claim 4
Dependent Claim
35 words
The molded plastic bracket, as defined in claim 1, wherein a reinforcing rib is located on each side of said horizontal lamp-supporting portion which extends from said front flange portion to said rear flange portion.
Claim 5
Dependent Claim
21 words
The molded plastic bracket, as defined in claim 1, wherein the bracket is constructed of a flame-retardant, fiberglass-reinforced thermosetting polyester material.
Claim 6
Dependent Claim
111 words
A molded plastic bracket for a dual-lamp receptacle of a light signal comprising, a body portion having a horizontal lamp-supporting portion including a pair of openings for accommodating a pair of lamp holders, a front flange portion being connectable to an inner peripheral edge of a frame member of the light signal, and a rear flange portion for accepting a pair of conductive binding posts which supply power to the pair of lamp holders for causing the illumination of a pair of lamps, and an elongated channel is formed on the underside of said horizontal lamp-supporting portion for accommodating a conductive strip which is connected to said pair of lamp holders.
Claim 7
Dependent Claim
111 words
A molded plastic bracket for a dual-lamp receptacle of a light signal comprising, a body portion having a horizontal lamp-supporting portion including a pair of openings for accommodating a pair of lamp holders, a front flange portion being connectable to an inner peripheral edge of a frame member of the light signal, and a rear flange portion for accepting a pair of conductive binding posts which supply power to the pair of lamp holders for causing the illumination of a pair of lamps, and an elongated channel is formed on the underside of said horizontal lamp-supporting portion for accommodating a conductive strip which is connected to said pair of lamp holders.
References Cited (Backward Citations)
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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) | 1990-10-12 | 1991-04-13 | 1991-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-12 | 1995-04-13 | 1995-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-12 | 1999-04-13 | 1999-10-13 | $7700.00 | Window Closed / Lapsed |