Visual warning barrier for door assembly used in a vertical lifting system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 29, 2014
Grant Date -
Mar 28, 2013
app pub date -
Sep 28, 2011
filing date -
Sep 28, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A vertical reciprocating conveyor has a carriage mounted for movement in a support frame between different designated vertical levels, a door assembly mounted on the support frame for gaining access to the carriage when the carriage is at the one designated level. A visual warning barrier is movably mounted between a raised, inoperative position and a lowered, operative position across a doorway formed in the support frame at the one designated level. The visual warning barrier is automatically moved from the raised, inoperative position to the lowered, operative position upon movement of the door assembly to the open position when the carriage is located away from the one designated level.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
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