Air lifting and balancing unit
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 8, 1995
Grant Date -
N/A
app pub date -
Dec 10, 1993
filing date -
Dec 10, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An air lifting and balancing unit including a cylinder, a piston in the cylinder, a ball screw affixed to the piston, a ball nut mounted for rotation on the ball screw, a drum mounted on the ball nut, a chain driven by the drum, and centrifugally actuated brakes mounted on the drum for stopping rotation of the drum when the drum exceeds a predetermined acceleration either due to a loss of load or to a loss of air pressure applied to the piston, and a pneumatic circuit in communication with the cylinder for providing air pressure thereto which applies a force on the piston which is at a substantially constant incremental value in opposition to the force exerted by the load applied to the piston through the chain and the drum and the ball screw regardless of variations in said air pressure to thereby cause the speed of the chain to remain substantially constant.
First Claim
Other Claims data not available
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 9 Citation Count
- F16D Class
- 5.16 % this patent is cited more than
- 30 Age