Speed-controllable lifter
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United States of America Patent
Stats
-
Oct 26, 2021
Grant Date -
Dec 17, 2020
app pub date -
Jun 14, 2019
filing date -
Jun 14, 2019
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A speed-controllable lifter includes a movable plate, a fixed plate which connected with a hanging ring via a sliding rope. The movable plate is hanged on the sliding rope. A speed control device is provided in the fixed plate, having a stop hub, two stop pads, two arc-shaped stop pad supports and an adjustment means which includes an upper camshaft, a lower camshaft and an adjustment shaft arranged on the upper camshaft for adjusting an opening degree between movable ends of the two stop pad supports. A brake device is provided in the movable plate, having a brake drum, two brake pads, two arc-shaped brake pad supports and a brake means which includes a driving shaft, a driven shaft and a control bar arranged on the driving shaft for controlling a degree of the tightness of movable ends of the two brake pad supports.
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