Access door

Details Access door Access door

1986-03-04

1987-05-26

Pate, III, William F.

Static structures (e.g., buildings)

Framing to receive door, doorjamb, or window sash

Retaining feature between frame and reveal

138 92, 220288, 220293, 49465, 49466, E06B 104

Patent

active

046674497

ABSTRACT:
An access door for an air conditioning duct or the like has a circular frame intended to be rotated into a circular opening in the duct wall. The frame has an inwardly extending circular shoulder against which abuts a removable circular door held in place by latch means engaging within a circular groove formed in the frame.

REFERENCES:
patent: 1327377 (1920-01-01), Dick
patent: 2601148 (1952-06-01), Jackson
patent: 2650124 (1953-08-01), Olson
patent: 2866572 (1958-12-01), Llewhellin
patent: 2906863 (1959-09-01), Ritter
patent: 3389505 (1968-06-01), Zitomer
patent: 3797172 (1974-03-01), Cannon
patent: 3818816 (1974-06-01), Petit
patent: 3854248 (1974-12-01), Dayus
patent: 3978554 (1976-09-01), Miller, Jr.
patent: 4300702 (1981-11-01), Scharrer
patent: 4334630 (1982-06-01), Bergin
Genflex Flexible Duct Systems, Submittal Data, Access Door-Port Series.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-695316