Break-off bolt with torque-limiting section
AssigneeTyco Electronics Simel SAS
InventorsJulien Dossmann, Bruno Peltier, Laurent Petrignet
Life of this patent
Estimating the term…
Abstract
A break-off bolt for securing a conductor within a connector includes a first thread section, a second thread section and a torque-limiting section arranged between the first thread section and the second thread section. The first thread section and the second thread section comprise the same external thread having a minor diameter. The torque-limiting section has at least one of no thread with an outer diameter larger than the minor diameter of the external thread or an external thread having a minor diameter larger than the minor diameter of the external thread of the first and second thread sections.
Claims13
A break-off assembly, comprising:
- a break-off bolt, comprising:
- (a) a first thread section and a second thread section, the first and the second thread section comprising the same external thread having a minor diameter;
- and
- (b) a torque-limiting section arranged between the first and second thread section and having no thread with an outer diameter larger than the minor diameter of the external thread;
- and
- a nut having internal threads,
- wherein a length of the torque-limiting section from the first thread section to the second thread section is less than a thickness of a nut threaded onto the first thread section or the second thread section,
- whereby the internal threads of the nut cut into the torque limiting section as the nut travels from the first thread section to the second thread section, a torque for breaking the break-off bolt is lower than a torque for overcoming the torque-limiting section.
A break-off assembly, comprising:
- a break-off bolt, including:
- a first thread section and a second thread section, the first and the second thread section comprising the same external thread with a minor diameter;
- and
- a torque-limiting section arranged between the first and second thread section and having no thread with an outer diameter larger than the minor diameter of the external thread;
- and
- a nut engaging the external thread, and having internal threads,
- wherein a length of the torque-limiting section from the first thread section to the second thread section is less than a thickness of the nut,
- whereby the internal threads of the nut cut into the torque limiting section as the nut travels from the first thread section to the second thread section, a torque for breaking the break-off bolt is lower than a torque for overcoming the torque-limiting section.
A contact assembly, comprising:
- a pipe-shaped connector having at least one bore extending through a wall of the connector;
- a break-off bolt sized to be installed through the at least one bore, including:
- a first thread section and a second thread section, the first and the second thread section comprising the same external thread with a minor diameter;
- and
- a torque-limiting section arranged between the first and second thread section, the torque-limiting section having a length along a longitudinal axis, and no thread with an outer diameter larger than the minor diameter of the external thread;
- and
- a nut having a thickness and internal threads,
- wherein the length of the torque limiting section is smaller than the thickness of the nut,
- whereby the internal threads of the nut cut into the torque limiting section as the nut travels from the first thread section to the second thread section, a torque for breaking the break-off bolt is lower than a torque for overcoming the torque-limiting section.
Dependencies are inferred from the claim text.