Automatic door bottom
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 14, 1990
Grant Date -
N/A
app pub date -
Sep 27, 1988
filing date -
Sep 27, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An automatic door bottom is disclosed in which a channel member has a drop bar assembly mounted therein with an adjustable length push rod connected to the drop bar for cooperation with a spring means to selectively lower and raise the drop bar in response to opening and closing the door. A pair of magnets are placed within the channel on the drop bar and in the channel for effecting movement of the drop bar to insure that the bar drops in a sizzle-like manner, with the end closest to the door hinge dropping down and lifting up, before the end away from the door hinge.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully