Impactable bottom curtain for a rolling steel door

Flexible or portable closure – partition – or panel – Plural and/or with rigid closure – Roll type

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C160S133000, C160S405000

Reexamination Certificate

active

10803150

ABSTRACT:
To avoid repeated damage to a lower section of a metal roll-up door, the lower section is replaced by a more impactable curtain assembly. The curtain assembly is so readily scalable, horizontally and vertically, that much of it can be manufactured and field assembled right at the installation site. The curtain assembly may comprise one or more strips of fabric that are cut from a roll of a certain width. The length of the fabric strips corresponds to the width of the doorway, and the number of strips is based on the vertical span of the door section that is being replaced. Windbars can be attached where adjacent strips connect to each other. A weighted, semi-rigid bottom bar reinforces the lower edge of the finished roll-up curtain. Under impact, the bottom bar has sufficient flexibility to allow the curtain to resiliently break away from within the door's vertical guide tracks.

REFERENCES:
patent: 2388297 (1945-11-01), Slaughter
patent: 2404257 (1946-07-01), Harry
patent: 2803297 (1957-08-01), Wenke
patent: 3292685 (1966-12-01), Morton
patent: 3331425 (1967-07-01), Groves et al.
patent: 3583465 (1971-06-01), Youngs et al.
patent: 4232725 (1980-11-01), Gidge
patent: 4478268 (1984-10-01), Palmer
patent: 4601320 (1986-07-01), Taylor
patent: 4800946 (1989-01-01), Rosenoy
patent: 5025847 (1991-06-01), Mueller
patent: 5056579 (1991-10-01), Kraeutler
patent: 5141043 (1992-08-01), Kraeutler
patent: 5141044 (1992-08-01), Hying et al.
patent: 5207256 (1993-05-01), Kraeutler
patent: 5307859 (1994-05-01), Kraeutler
patent: 5392836 (1995-02-01), West et al.
patent: 5450890 (1995-09-01), Pinkalla et al.
patent: 5474118 (1995-12-01), Hoffman
patent: 5477902 (1995-12-01), Kraeutler
patent: 5848631 (1998-12-01), DeGiovanni et al.
patent: 5964270 (1999-10-01), Kirkey et al.
patent: 6065525 (2000-05-01), Wells
patent: 6070640 (2000-06-01), Miyagawa et al.
patent: 6655442 (2003-12-01), Snyder
patent: 6722416 (2004-04-01), Varley et al.
Cornell Iron Works, “Introducing the Bull Fighter: Repeated Door Damage is a Lot of Bull,” 4 pages, dated Jun. 12, 1998.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Impactable bottom curtain for a rolling steel 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 Impactable bottom curtain for a rolling steel door, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Impactable bottom curtain for a rolling steel door will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3817727

All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.