Switchgear racking mechanism including self-retaining crank and

Details Switchgear racking mechanism including self-retaining crank and Switchgear racking mechanism including self-retaining crank and

1993-03-11

1994-01-11

Thompson, Gregory D.

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electrical power distribution systems and devices

200 50AA, 361608, H02B 1100

Patent

active

052787222

ABSTRACT:
A racking mechanism (30) for switchgear cubicle (20) draw-out units (24) including a base (39); and a drive screw assembly (44) attached to the base (39) including a screw block (36) translated by rotation of the screw. The screw block (36) is adapted for selective coupling to a draw-out unit (24). Drive surfaces (72) are constructed on the drive screw assembly (44). A biased racking shield (52) which surrounds at least a portion of the drive surfaces (72) in a first position is translatable to a second position by exerting counter-biasing force against the racking shield, in order to expose a portion of the drive surfaces (72). A crank assembly (76) having a socket portion (80) is engageable with the drive surfaces (72) when the racking shield (52) is translated to its second position, in order to rotate the drive screw (44). The socket portion (80) is retained in engagement with the drive surfaces (72) upon translation of the racking shield (52) to its second position by detent groove (74) and spring plungers (82). The racking mechanism (30) may include a tape indicator assembly (96) visible while cranking the crank assembly (76).

REFERENCES:
patent: 2673260 (1954-03-01), Lester et al.
patent: 4262175 (1981-04-01), Rexroad et al.
patent: 4281227 (1981-07-01), Rexroad et al.
patent: 4754367 (1988-05-01), Bohnen
patent: 4814942 (1989-03-01), Robirds et al.

Affiliated with

Also associated with

Rating

Switchgear racking mechanism including self-retaining crank and does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Switchgear racking mechanism including self-retaining crank and , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Switchgear racking mechanism including self-retaining crank and will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1635236