Lever type hoisting machine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 11, 1989
Grant Date -
N/A
app pub date -
Oct 27, 1987
filing date -
Nov 15, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A lever type hoisting machine capable of easily and securely pulling down a lower hook in no-load state. An operation wheel is rotatably supported in contact with a drive shaft and a pressure drive wheel, and an inside collision part and an outside collision part are disposed at the pressure drive wheel side part of the operation wheel and at the opposite side part, respectively, while a collision wall capable of being engaged with the inside collision part is formed on the pressure drive wheel, and a collision element capable of being engaged with the outside collision part is formed in a regulating member held movably only in the axial direction on the drive shaft in contact with the opposite side of the pressure drive wheel of the operation wheel, and a secure rotation in the hoist-down direction of the pressure drive wheel in no-load state is guaranteed, so that it is possible to pull down the lower hook in continuous state.
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