Access door for air flow conduits
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 26, 1991
Grant Date -
N/A
app pub date -
Dec 7, 1990
filing date -
Dec 7, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A readily demountable door assembly for sealing an aperture in a duct comprises a door member having an inwardly directed ramp or cam which lies within the duct and is inclined outwardly toward the duct surface. A clamp is adapted to be mounted adjacent the aperture of the duct at a position diametrically opposite the ramp. The clamp engages the door and shifts the same in the direction of the ramp, which movement presses the flange of the door tightly against the duct surface, the clamp including portions which overlie the door at positions remote from the ramp to urge such remotely disposed portions of the door against the duct surface.
First Claim
Other Claims data not available
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 31 Citation Count
- E06B Class
- 0 % this patent is cited more than
- 34 Age