Signal apparatus including improved access capabilities

Details Signal apparatus including improved access capabilities Signal apparatus including improved access capabilities

1997-01-30

1998-08-11

Le, Mark Tuan

Railway switches and signals

Signals

Light beam projecting

B61L 500

Patent

active

057916047

ABSTRACT:
A railroad signal apparatus which includes a releasable joint which facilitates the servicing of railroad signal heads, particularly the servicing of signal lights mounted therein. The apparatus provides a signal head apparatus which is safe to operate and maintain, yet is still cost-effective to manufacture, operate, and maintain.

REFERENCES:
patent: 284716 (1883-09-01), Blodgett et al.
patent: 906707 (1908-12-01), Hall
patent: 1363566 (1920-12-01), Churchill
General Railway Signal Catalog, dated Jun. 1988, including copies of catalog cover, contents page, pp. 73-1, 73-12, 76-1, 76-2 and 76-14.
Safetran Systems Calatog, dated Nov. 1996, including copies of catalog cover sheet, contents page, section C, pp. C-1-, C-1-2, C-8-1, C-9-1, C-10-1.
Union Switch & Signal Price List, dated Jan. 1, 1996, including catalog cover, pp. 6, 71.

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