Access door for ductwork

Details Access door for ductwork Access door for ductwork

1975-07-01

1976-10-19

Moore, Richard E.

Closure fasteners

Clamps

Ring

E05C 1914

Patent

active

039867404

ABSTRACT:
This invention relates to an access door arrangement for easy entry into ductwork. The access door has a circular collar member which has a flat inner flange that threads into a hole in the ductwork. A closure member is located over an outer flange on the collar member. An annular gasket may be placed between the outer flange and the closure member for sealing or insulating purposes. The closure member is held firmly over the hole by a retaining ring which is placed over the closure member with its ends drawn together and held by a clasp and latch arrangement. The access door is very quickly and easily opened by merely releasing the retaining ring by opening the clasp and latch arrangement and moving the closure member off the collar. Furthermore, the whole access door arrangement is readily and quickly installed on ductwork by turning the inner flange into or out of a properly sized hole.

REFERENCES:
patent: 3261632 (1966-07-01), Schaefer

Affiliated with

Also associated with

Rating

Access door for ductwork does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-98845