Mobile folding choral riser with high-speed cylinder lift-assist mechanism and partially independent back railing linkage
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 9, 2013
Grant Date -
May 24, 2012
app pub date -
Nov 18, 2010
filing date -
Nov 18, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention provides a mobile folding choral riser having lift-assist and stability mechanisms. In particular, the choral riser includes a gas cylinder that provides a force tending to extend the cylinder to assist in folding the riser into a storage position, the cylinder providing substantially no force to resist rapid extension thereof. In addition, the choral riser preferably includes a back railing linkage that permits independent raising and lowering of a back railing member when the choral riser is in a use or partially folded position but constrains the back railing member to a raised position when the choral riser is in an at least substantially fully folded position.
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