Railway light signal
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 18, 1995
Issued Date -
N/A
app pub date -
May 12, 1994
filing date -
Oct 13, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A light signal provides fixed focus and the ability to service the device solely from the rear. This light signal comprises a housing having a rear entry for desired maintenance and an immovable front wall, the lens mount containing a lens unit that is removable secured to an inside surface of the immovable front wall of the housing. Each lens mount includes a fixed focusing means having a receptacle for operative receipt of a light means, wherein the fixed focusing means is positioned at the end of the lens mount nearest an inner lens; whereby the focus of the light means is fixed relative to the lens unit.
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