Trench shield directly ridable and movable on a constructing pipe
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 26, 2000
Grant Date -
N/A
app pub date -
Apr 14, 1999
filing date -
Apr 14, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A trench shield includes a pair of shielding panels for protecting opposite side walls of a trench excavation, two side frames are provided for restively adjustably securing the two shielding panels on the two side frames, and have a plurality of brace members spaced between the two side frames for retaining the two side frames and the two shielding panels, and two rolling devices respectively are mounted on a front bottom portion and a rear bottom portion of the trench shield for carrying the trench shield to be ridable and movable on a pipe under construction in the trench excavation. Upon rolling of the rolling devices on the constructing pipe, the trench shield will be conveniently moved on the pipe without any obstruction.
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