US 5,391,058 A · Fluidic apparatus

Abstract

A fluidic apparatus includes a pulley driven by an engine, torque limiting means disposed in the pulley and adapted to shut off the transmission of driving force transmitted by the pulley when overload is applied thereto, and a driving shaft driven by the torque limiting means. The torque limiting means includes a boss formed coaxially with the pulley, a collar disposed integrally and coaxially with the driving shaft, and a coiled spring adapted to hold outer peripheral surfaces of the boss and the collar by tightening with a predetermined tightening allowance. With the torque limiting means, if abnormal loads should be applied to the driving shaft, there hardly occur internal breakages, or the like, in the fluidic apparatus. In addition, because the torque limiting means has such a simple construction, the fluidic apparatus is down-sized and reduced in manufacturing cost.

Claims9

Dependent claims

A fluidic apparatus, comprising:

a pulley for driven coupling to an engine;
torque limiting means disposed in said pulley for interrupting the transmission of driving force by said pulley when overload is applied thereto;
and
a driving shaft coupled to an output of said torque limiting means;
said torque limiting means including:
a boss formed coaxially with said pulley and having an outer peripheral surface;
a collar disposed integrally and coaxially with said driving shaft and having an outer peripheral surface;
and
a coiled spring coiled with a predetermined tightening allowance about said outer peripheral surfaces of said boss and said collar for transmitting driving force to said shaft in the absence of an overload.

6 more elements

Dependencies are inferred from the claim text.

Fluidic apparatus

Life of this patent

Fluidic apparatus

Life of this patent

Abstract

Claims9