Electric switch with a drive shaft and a blocking mechanism...

Details Electric switch with a drive shaft and a blocking mechanism... Electric switch with a drive shaft and a blocking mechanism...

2005-01-04

2005-01-04

Friedhofer, Michael A. (Department: 2832)

Electricity: circuit makers and breakers

Interlocking

Drawout-type switchgear

C200S050240

Reexamination Certificate

active

06838626

ABSTRACT:
An electric switch includes a drive shaft that can be actuated by means of a hand crank and a blocking mechanism for blocking actuation of the drive shaft. The hand crank has a shaft that can be displaced along the drive shaft and that is protected against removal by the drive shaft and a crank arm that is axially fixed on the shaft and is wound by the shaft. In order to configure that blocking mechanism in such a way that a blocking force substantially smaller in comparison with the torque of the drive shaft is needed in order to block actuation of the drive shaft, a recess is provided on the front side of the switch, into which the crank arm can be lowered in an anti-rotational manner by displacing the shaft, wherein the blocking mechanism that has been activated for blocking fixes the shaft axially once the crank arm has been lowered into the recess.

REFERENCES:
patent: 3213224 (1965-10-01), Mrenna et al.
patent: 4139748 (1979-02-01), Wolfe et al.
patent: 4262175 (1981-04-01), Rexroad et al.
patent: 5278722 (1994-01-01), Peruso
patent: 5337210 (1994-08-01), Ishikawa et al.
patent: 5466902 (1995-11-01), Blom et al.
patent: 5912444 (1999-06-01), Godesa
patent: 6005208 (1999-12-01), Castonguay
patent: 6066814 (2000-05-01), Smith et al.
patent: 44 20 580 (1995-11-01), None
patent: 44 20 581 (1995-11-01), None

Affiliated with

Also associated with

Rating

Electric switch with a drive shaft and a blocking mechanism... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electric switch with a drive shaft and a blocking mechanism..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electric switch with a drive shaft and a blocking mechanism... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3424953