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US 2003/0198528 A1Published application
Torque specifying nut
OwnerMasakatsu Onishi, Kazuhisa Kawaharainventors
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OwnerMasakatsu Onishi, Kazuhisa Kawaharainventors
Estimating the term…
There is provided a torque specifying nut which is suitable for being applied to a wind-fastening strap metal piece, capable of clamping only up to a specified clamping torque and capable of confirming whether clamping has been finished or not at a glance. The torque specifying nut is integrally formed with a nut main body having a female screw hole and a torque operating portion having a tool applying face at an outer side thereof, in which the torque operating portion is formed with a noncircular hole concentric with the female screw hole and having a diameter larger than a diameter of the female screw hole from an end face thereof over to the nut main body and at a boundary portion of the nut main body and torque operating portion, at least two of fragile portions are provided to surround the noncircular hole.
A torque specifying nut integrally formed with a nut main body (3) having a female screw hole (30) and a torque operating portion (4) having a tool applying face (40) at an outer side thereof, wherein the torque operating portion (4) is formed with a noncircular hole (41) concentric with the female screw hole (30) and having a diameter larger than a diameter of the female screw hole from an upper end face thereof by a depth reaching the nut main body (3) and at a boundary portion of the nut main body (3) and the torque operating portion (4), as a torque restraining portion (5), a plurality of fragile portions (5b) are arranged around the noncircular hole (41) at intervals in a peripheral direction.
Dependencies are inferred from the claim text.