Balancing device for a raisable-curtain goods-handling door

Details Balancing device for a raisable-curtain goods-handling door Balancing device for a raisable-curtain goods-handling door

1993-03-26

1994-05-03

Purol, David M.

Flexible or portable closure, partition, or panel

Plural strip, slat, or panel type

With mounting or supporting means

E05F 1100

Patent

active

053078578

ABSTRACT:
A balancing apparatus for a raisable-curtain goods-handling door includes a shaft on which a curtain is wound up or on which curtain-raising straps are wound up. The shaft supports two drums onto which are wound belts from which two counterweights are suspended. The "long" belt from which a "long" counterweight of "long" mass M.sub.6 is suspended has a length that corresponds to the full stroke of the curtain while the "short" belt of the "short" other counterweight of "short" mass M.sub.5 is shorter and is fastened on the corresponding drum in such a manner as to enable it to wind in either direction on the drum.

REFERENCES:
patent: 991605 (1911-05-01), Byrne
patent: 1750042 (1930-03-01), Hoover
patent: 3878879 (1975-04-01), Manns
patent: 3981343 (1976-09-01), DeVito
patent: 4727919 (1988-03-01), Kraeutler
patent: 5103890 (1992-04-01), Cloutier

Affiliated with

Also associated with

Rating

Balancing device for a raisable-curtain goods-handling door does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Balancing device for a raisable-curtain goods-handling door, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Balancing device for a raisable-curtain goods-handling door will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2108509