Power assisted hand truck
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 1, 1988
Grant Date -
N/A
app pub date -
May 30, 1986
filing date -
May 30, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved power assisted hand truck includes a lower frame and an upper, upwardly extending, tilting frame for supporting a load in generally upright and rearwardly tilting orientations. The upper frame is tilted forward by a first hydraulic actuator mounted between the lower and upper frame portions. To stabilize the hand truck while raising the load, a stabilizer, pivotally mounted to the frame, is driven by a second hydraulic actuator mounted between the frame and the stabilizer. The first and second actuators are powered by a hand pump. Pressurizing the retract port of the second actuator causes the stabilizer to move until it contacts the ground. Continued pressurization of the retract port causes the second hydraulic actuator to pull the upper frame towards its rearwardly tilting position. The extend port of the second actuator is then pressurized slightly to cause the stabilizer to pivot away from the ground. The load is lowered by pressurizing the extend port of the first actuator.
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