Locking mechanism in tension providing device
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United States of America Patent
Stats
-
Jan 10, 1984
Grant Date -
N/A
app pub date -
May 7, 1981
filing date -
May 8, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A tension providing device is adapted to change a rotation force due to a spring torque of a shaft to a pushing force in the direction of an axial line of a piston. At one end of the above shaft, a split groove is formed, and at a position corresponds to an axial center of the shaft attached to a lid of a casing body which forms an outer shell of said device, a penetrated hole having an appropriate size and shape is provided. The rotation of the shaft is locked or unlocked by a stopper member latched with said split groove and said penetrated hole removably. Further, said locking mechanism is adapted to perform winding the spring and pulling back the piston into the device by the rotation of the shaft through the penetrated hole of said lid without removing the lid of the casing using an appropriate tool.
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