Closure device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 6, 1990
Grant Date -
N/A
app pub date -
Jul 31, 1989
filing date -
Jul 31, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A closure device for opening and closing an opening by moving a closure member substantially vertically has a motor for driving the closure member. The motor is secured to a lower portion of the closure member and within substantially the same plane as the plane of movement of the closure member. Accordingly, it is possible to prevent an eccentric load from being applied to the closure member.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
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