Switch machine improvements

Details Switch machine improvements Switch machine improvements

2006-12-26

2006-12-26

Jules, Frantz F. (Department: 3617)

Railway switches and signals

Switches

C246S406000, C246S407000

Reexamination Certificate

active

07152830

ABSTRACT:
A control mechanism for moving switch points on a railroad track, having a drive screw driven by a motor, a traveling block moving along the drive screw to position the switch points, an end stop on the drive screw for limiting movement of the traveling block, a hand crank for manually turning the drive screw, and a torque limiting clutch on the hand crank.

REFERENCES:
patent: 2641690 (1953-06-01), McLeish
patent: 2986630 (1961-05-01), Maynard
patent: 3470371 (1969-09-01), Hayes
patent: 4150769 (1979-04-01), James
patent: 4266437 (1981-05-01), Obergfell
patent: 4380325 (1983-04-01), Palmer
patent: 4413983 (1983-11-01), Young et al.
patent: 4741221 (1988-05-01), Hudimac, Jr.
patent: 5094114 (1992-03-01), Date et al.
patent: 6454221 (2002-09-01), Bonfigli

Affiliated with

Also associated with

Rating

Switch machine improvements does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Switch machine improvements, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Switch machine improvements will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3692770